diff --git a/.classpath b/.classpath new file mode 100644 index 0000000..942da55 --- /dev/null +++ b/.classpath @@ -0,0 +1,17 @@ + + + + + + + + + + + + + + + + + diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..84c048a --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +/build/ diff --git a/.project b/.project new file mode 100644 index 0000000..f970b92 --- /dev/null +++ b/.project @@ -0,0 +1,31 @@ + + + SimpleWebApp + + + + + + org.eclipse.jdt.core.javabuilder + + + + + org.eclipse.wst.common.project.facet.core.builder + + + + + org.eclipse.wst.validation.validationbuilder + + + + + + org.eclipse.jem.workbench.JavaEMFNature + org.eclipse.wst.common.modulecore.ModuleCoreNature + org.eclipse.wst.common.project.facet.core.nature + org.eclipse.jdt.core.javanature + org.eclipse.wst.jsdt.core.jsNature + + diff --git a/.settings/.jsdtscope b/.settings/.jsdtscope new file mode 100644 index 0000000..92e666d --- /dev/null +++ b/.settings/.jsdtscope @@ -0,0 +1,12 @@ + + + + + + + + + + + + diff --git a/.settings/org.eclipse.jdt.core.prefs b/.settings/org.eclipse.jdt.core.prefs new file mode 100644 index 0000000..0c68a61 --- /dev/null +++ b/.settings/org.eclipse.jdt.core.prefs @@ -0,0 +1,7 @@ +eclipse.preferences.version=1 +org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled +org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8 +org.eclipse.jdt.core.compiler.compliance=1.8 +org.eclipse.jdt.core.compiler.problem.assertIdentifier=error +org.eclipse.jdt.core.compiler.problem.enumIdentifier=error +org.eclipse.jdt.core.compiler.source=1.8 diff --git a/.settings/org.eclipse.wst.common.component b/.settings/org.eclipse.wst.common.component new file mode 100644 index 0000000..2e5e846 --- /dev/null +++ b/.settings/org.eclipse.wst.common.component @@ -0,0 +1,8 @@ + + + + + + + + diff --git a/.settings/org.eclipse.wst.common.project.facet.core.xml b/.settings/org.eclipse.wst.common.project.facet.core.xml new file mode 100644 index 0000000..03e6f9a --- /dev/null +++ b/.settings/org.eclipse.wst.common.project.facet.core.xml @@ -0,0 +1,10 @@ + + + + + + + + + + diff --git a/.settings/org.eclipse.wst.jsdt.ui.superType.container b/.settings/org.eclipse.wst.jsdt.ui.superType.container new file mode 100644 index 0000000..3bd5d0a --- /dev/null +++ b/.settings/org.eclipse.wst.jsdt.ui.superType.container @@ -0,0 +1 @@ +org.eclipse.wst.jsdt.launching.baseBrowserLibrary \ No newline at end of file diff --git a/.settings/org.eclipse.wst.jsdt.ui.superType.name b/.settings/org.eclipse.wst.jsdt.ui.superType.name new file mode 100644 index 0000000..05bd71b --- /dev/null +++ b/.settings/org.eclipse.wst.jsdt.ui.superType.name @@ -0,0 +1 @@ +Window \ No newline at end of file diff --git a/WebContent/META-INF/MANIFEST.MF b/WebContent/META-INF/MANIFEST.MF new file mode 100644 index 0000000..5e94951 --- /dev/null +++ b/WebContent/META-INF/MANIFEST.MF @@ -0,0 +1,3 @@ +Manifest-Version: 1.0 +Class-Path: + diff --git a/WebContent/WEB-INF/lib/javax.servlet.jsp.jstl-1.2.4.jar b/WebContent/WEB-INF/lib/javax.servlet.jsp.jstl-1.2.4.jar new file mode 100644 index 0000000..890d50d Binary files /dev/null and b/WebContent/WEB-INF/lib/javax.servlet.jsp.jstl-1.2.4.jar differ diff --git a/WebContent/WEB-INF/lib/javax.servlet.jsp.jstl-api-1.2.1.jar b/WebContent/WEB-INF/lib/javax.servlet.jsp.jstl-api-1.2.1.jar new file mode 100644 index 0000000..4b3b433 Binary files /dev/null and b/WebContent/WEB-INF/lib/javax.servlet.jsp.jstl-api-1.2.1.jar differ diff --git a/WebContent/WEB-INF/lib/mysql-connector-java-5.1.40-bin.jar b/WebContent/WEB-INF/lib/mysql-connector-java-5.1.40-bin.jar new file mode 100644 index 0000000..60bef5c Binary files /dev/null and b/WebContent/WEB-INF/lib/mysql-connector-java-5.1.40-bin.jar differ diff --git a/WebContent/WEB-INF/tags/wrapper.tag b/WebContent/WEB-INF/tags/wrapper.tag new file mode 100644 index 0000000..69c0489 --- /dev/null +++ b/WebContent/WEB-INF/tags/wrapper.tag @@ -0,0 +1,54 @@ +<%@tag description="Page Wrapper Tag" pageEncoding="UTF-8"%> +<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> +<%@attribute name="title" required="true" %> + + + + + + ${pageTitle} + + " integrity="sha384-AysaV+vQoT3kOAXZkl02PThvDr8HYKPZhNT5h/CXfBThSRXQ6jW5DO2ekP5ViFdi" crossorigin="anonymous"> + + " rel="stylesheet"> + + + + + +
+
+
+

${title}

+
+ +
+ +

+ Hello ${loginedUser.userName} +

+
+
+ + +
+ + + + \ No newline at end of file diff --git a/WebContent/WEB-INF/views/createProductView.jsp b/WebContent/WEB-INF/views/createProductView.jsp new file mode 100644 index 0000000..aeb7de1 --- /dev/null +++ b/WebContent/WEB-INF/views/createProductView.jsp @@ -0,0 +1,30 @@ +<%@page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> +<%@taglib prefix="t" tagdir="/WEB-INF/tags" %> + + + +

${errorString}

+ +
+
+ +
+ +
+
+
+ +
+ +
+
+
+ +
+ +
+
+ + Cancel +
+ \ No newline at end of file diff --git a/WebContent/WEB-INF/views/deleteProductErrorView.jsp b/WebContent/WEB-INF/views/deleteProductErrorView.jsp new file mode 100644 index 0000000..2f6ad73 --- /dev/null +++ b/WebContent/WEB-INF/views/deleteProductErrorView.jsp @@ -0,0 +1,7 @@ +<%@page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> +<%@taglib prefix="t" tagdir="/WEB-INF/tags" %> + + +

${errorString}

+ Product List + \ No newline at end of file diff --git a/WebContent/WEB-INF/views/editProductView.jsp b/WebContent/WEB-INF/views/editProductView.jsp new file mode 100644 index 0000000..bd180fd --- /dev/null +++ b/WebContent/WEB-INF/views/editProductView.jsp @@ -0,0 +1,28 @@ +<%@page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> +<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> +<%@taglib prefix="t" tagdir="/WEB-INF/tags" %> + + + +

${errorString}

+ + +
+ +
+ +
+ +
+
+
+ +
+ +
+
+ + Cancel +
+ + \ No newline at end of file diff --git a/WebContent/WEB-INF/views/homeView.jsp b/WebContent/WEB-INF/views/homeView.jsp new file mode 100644 index 0000000..9da41d0 --- /dev/null +++ b/WebContent/WEB-INF/views/homeView.jsp @@ -0,0 +1,17 @@ +<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> +<%@taglib prefix="t" tagdir="/WEB-INF/tags" %> + + + This is demo Simple web application using jsp,servlet & Jdbc. +
+
It includes the following functions: + + + \ No newline at end of file diff --git a/WebContent/WEB-INF/views/loginView.jsp b/WebContent/WEB-INF/views/loginView.jsp new file mode 100644 index 0000000..a991361 --- /dev/null +++ b/WebContent/WEB-INF/views/loginView.jsp @@ -0,0 +1,35 @@ +<%@page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> +<%@taglib prefix="t" tagdir="/WEB-INF/tags" %> + + +

${errorString}

+ +
+
+ +
+ +
+
+ +
+ +
+ +
+
+ +
+ +
+ + + Cancel +
+ +

User Name: lani, password: lani001 or tom/tom001 or jerry/jerry001

+ \ No newline at end of file diff --git a/WebContent/WEB-INF/views/productListView.jsp b/WebContent/WEB-INF/views/productListView.jsp new file mode 100644 index 0000000..b9306fc --- /dev/null +++ b/WebContent/WEB-INF/views/productListView.jsp @@ -0,0 +1,34 @@ +<%@page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> +<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> +<%@taglib prefix="t" tagdir="/WEB-INF/tags" %> + + + +

${errorString}

+ + + + + + + + + + + + + + + + + + +
CodeNamePriceEditDelete
${product.code}${product.name}${product.price} + Edit + + Delete +
+ + Create Product + + \ No newline at end of file diff --git a/WebContent/WEB-INF/views/userInfoView.jsp b/WebContent/WEB-INF/views/userInfoView.jsp new file mode 100644 index 0000000..20ec736 --- /dev/null +++ b/WebContent/WEB-INF/views/userInfoView.jsp @@ -0,0 +1,9 @@ +<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> +<%@taglib prefix="t" tagdir="/WEB-INF/tags" %> + + + User Name: ${user.userName} +
+ Gender: ${user.gender} +
+ \ No newline at end of file diff --git a/WebContent/WEB-INF/web.xml b/WebContent/WEB-INF/web.xml new file mode 100644 index 0000000..fab2922 --- /dev/null +++ b/WebContent/WEB-INF/web.xml @@ -0,0 +1,16 @@ + + + SimpleWebApp + + home + index.html + + + jdbcFilter + /* + + + cookieFilter + /* + + \ No newline at end of file diff --git a/WebContent/styles.css b/WebContent/styles.css new file mode 100644 index 0000000..388aa3a --- /dev/null +++ b/WebContent/styles.css @@ -0,0 +1,39 @@ +body { + font-size: 16px; +} + +h2 { + margin-bottom: 20px; +} + +.container { + max-width: 700px; + padding: 0 20px; +} + +.site-name { + margin: 0; + padding: 5px 0; +} + +.navbar { + padding: 20px 40px; + font-size: .9rem; + +} +.nav-link { + text-transform: uppercase; +} + +.header { + padding-top: 2rem; +} + +.btn-submit { + margin-right: 20px; +} + +.login-info { + margin-top: 20px; + color: #AAACAC; +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/beans/Product.java b/src/com/lanihuang/simplewebapp/beans/Product.java new file mode 100644 index 0000000..6f82c46 --- /dev/null +++ b/src/com/lanihuang/simplewebapp/beans/Product.java @@ -0,0 +1,43 @@ +package com.lanihuang.simplewebapp.beans; + +public class Product { + + private String code; + private String name; + private float price; + + public Product() { + + } + + public Product(String code, String name, float price) { + this.code = code; + this.name = name; + this.price = price; + } + + public String getCode() { + return code; + } + + public void setCode(String code) { + this.code = code; + } + + public String getName() { + return name; + } + + public void setName(String name) { + this.name = name; + } + + public float getPrice() { + return price; + } + + public void setPrice(float price) { + this.price = price; + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/beans/UserAccount.java b/src/com/lanihuang/simplewebapp/beans/UserAccount.java new file mode 100644 index 0000000..142f618 --- /dev/null +++ b/src/com/lanihuang/simplewebapp/beans/UserAccount.java @@ -0,0 +1,41 @@ +package com.lanihuang.simplewebapp.beans; + +public class UserAccount { + + public static final String GENDER_MALE = "M"; + public static final String GENDER_FEMALE = "F"; + + private String userName; + private String gender; + private String password; + + + public UserAccount() { + + } + + public String getUserName() { + return userName; + } + + public void setUserName(String userName) { + this.userName = userName; + } + + public String getGender() { + return gender; + } + + public void setGender(String gender) { + this.gender = gender; + } + + public String getPassword() { + return password; + } + + public void setPassword(String password) { + this.password = password; + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/conn/ConnectionUtils.java b/src/com/lanihuang/simplewebapp/conn/ConnectionUtils.java new file mode 100644 index 0000000..eae2bdc --- /dev/null +++ b/src/com/lanihuang/simplewebapp/conn/ConnectionUtils.java @@ -0,0 +1,32 @@ +package com.lanihuang.simplewebapp.conn; + +import java.sql.Connection; +import java.sql.SQLException; + +public class ConnectionUtils { + + public static Connection getConnection() + throws ClassNotFoundException, SQLException { + + // Here I using Oracle Database. +// return OracleConnUtils.getOracleConnection(); + + return MySQLConnUtils.getMySQLConnection(); + // return SQLServerConnUtils_JTDS.getSQLServerConnection_JTDS(); + // return SQLServerConnUtils_SQLJDBC.getSQLServerConnection_SQLJDBC(); + } + + public static void closeQuietly(Connection conn) { + try { + conn.close(); + } catch (Exception e) { + } + } + + public static void rollbackQuietly(Connection conn) { + try { + conn.rollback(); + } catch (Exception e) { + } + } +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/conn/MySQLConnUtils.java b/src/com/lanihuang/simplewebapp/conn/MySQLConnUtils.java new file mode 100644 index 0000000..5422811 --- /dev/null +++ b/src/com/lanihuang/simplewebapp/conn/MySQLConnUtils.java @@ -0,0 +1,36 @@ +package com.lanihuang.simplewebapp.conn; + +import java.sql.Connection; +import java.sql.DriverManager; +import java.sql.SQLException; + +public class MySQLConnUtils { + + public static Connection getMySQLConnection() + throws ClassNotFoundException, SQLException { + + // Note: Change the connection parameters accordingly. + String hostName = "localhost"; + String dbName = "jspapp"; + String userName = "root"; + String password = "root"; + return getMySQLConnection(hostName, dbName, userName, password); + } + + public static Connection getMySQLConnection(String hostName, String dbName, + String userName, String password) throws SQLException, + ClassNotFoundException { + + // Declare the class driver for MySQL DB + Class.forName("com.mysql.jdbc.Driver"); + + // URL Connection for MySQL + // Example: jdbc:mysql://localhost:3306/simplehr + String connectionURL = "jdbc:mysql://" + hostName + ":8889/" + dbName; + + Connection conn = DriverManager.getConnection(connectionURL, userName, + password); + return conn; + } + +} diff --git a/src/com/lanihuang/simplewebapp/filter/CookieFilter.java b/src/com/lanihuang/simplewebapp/filter/CookieFilter.java new file mode 100644 index 0000000..411603b --- /dev/null +++ b/src/com/lanihuang/simplewebapp/filter/CookieFilter.java @@ -0,0 +1,74 @@ +package com.lanihuang.simplewebapp.filter; + +import java.io.IOException; +import java.sql.Connection; +import java.sql.SQLException; + +import javax.servlet.Filter; +import javax.servlet.FilterChain; +import javax.servlet.FilterConfig; +import javax.servlet.ServletException; +import javax.servlet.ServletRequest; +import javax.servlet.ServletResponse; +import javax.servlet.annotation.WebFilter; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpSession; + +import com.lanihuang.simplewebapp.beans.UserAccount; +import com.lanihuang.simplewebapp.utils.DBUtils; +import com.lanihuang.simplewebapp.utils.MyUtils; + +@WebFilter(filterName = "cookieFilter", urlPatterns = { "/*" }) +public class CookieFilter implements Filter { + + public CookieFilter() { + } + + @Override + public void init(FilterConfig fConfig) throws ServletException { + + } + + @Override + public void destroy() { + + } + + @Override + public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) + throws IOException, ServletException { + HttpServletRequest req = (HttpServletRequest) request; + HttpSession session = req.getSession(); + + UserAccount userInSession = MyUtils.getLoginedUser(session); + + if (userInSession != null) { + session.setAttribute("COOKIE_CHECKED", "CHECKED"); + chain.doFilter(request, response); + return; + } + + + // Connection was created in JDBCFilter. + Connection conn = MyUtils.getStoredConnection(request); + + + // Flag check cookie + String checked = (String) session.getAttribute("COOKIE_CHECKED"); + if (checked == null && conn != null) { + String userName = MyUtils.getUserNameInCookie(req); + try { + UserAccount user = DBUtils.findUser(conn, userName); + MyUtils.storeLoginedUser(session, user); + } catch (SQLException e) { + e.printStackTrace(); + } + + // Mark checked. + session.setAttribute("COOKIE_CHECKED", "CHECKED"); + } + + chain.doFilter(request, response); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/filter/EncodingFilter.java b/src/com/lanihuang/simplewebapp/filter/EncodingFilter.java new file mode 100644 index 0000000..f367d5c --- /dev/null +++ b/src/com/lanihuang/simplewebapp/filter/EncodingFilter.java @@ -0,0 +1,38 @@ +package com.lanihuang.simplewebapp.filter; + +import java.io.IOException; + +import javax.servlet.Filter; +import javax.servlet.FilterChain; +import javax.servlet.FilterConfig; +import javax.servlet.ServletException; +import javax.servlet.ServletRequest; +import javax.servlet.ServletResponse; +import javax.servlet.annotation.WebFilter; + + +@WebFilter(filterName = "encodingFilter", urlPatterns = { "/*" }) +public class EncodingFilter implements Filter { + + public EncodingFilter() { + } + + @Override + public void init(FilterConfig fConfig) throws ServletException { + + } + + @Override + public void destroy() { + + } + + @Override + public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) + throws IOException, ServletException { + request.setCharacterEncoding("UTF-8"); + + chain.doFilter(request, response); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/filter/JDBCFilter.java b/src/com/lanihuang/simplewebapp/filter/JDBCFilter.java new file mode 100644 index 0000000..dbe94db --- /dev/null +++ b/src/com/lanihuang/simplewebapp/filter/JDBCFilter.java @@ -0,0 +1,129 @@ +package com.lanihuang.simplewebapp.filter; + + +import java.io.IOException; +import java.sql.Connection; +import java.util.Collection; +import java.util.Map; + +import javax.servlet.Filter; +import javax.servlet.FilterChain; +import javax.servlet.FilterConfig; +import javax.servlet.ServletException; +import javax.servlet.ServletRegistration; +import javax.servlet.ServletRequest; +import javax.servlet.ServletResponse; +import javax.servlet.annotation.WebFilter; +import javax.servlet.http.HttpServletRequest; + +import com.lanihuang.simplewebapp.conn.ConnectionUtils; +import com.lanihuang.simplewebapp.utils.MyUtils; + +@WebFilter(filterName = "jdbcFilter", urlPatterns = { "/*" }) +public class JDBCFilter implements Filter { + + public JDBCFilter() { + } + + @Override + public void init(FilterConfig fConfig) throws ServletException { + + } + + @Override + public void destroy() { + + } + + + // Check the target of the request is a servlet? + private boolean needJDBC(HttpServletRequest request) { + System.out.println("JDBC Filter"); + // + // Servlet Url-pattern: /spath/* + // + // => /spath + String servletPath = request.getServletPath(); + // => /abc/mnp + String pathInfo = request.getPathInfo(); + + String urlPattern = servletPath; + + if (pathInfo != null) { + // => /spath/* + urlPattern = servletPath + "/*"; + } + + // Key: servletName. + // Value: ServletRegistration + Map servletRegistrations = request.getServletContext() + .getServletRegistrations(); + + + // Collection of all servlet in your webapp. + Collection values = servletRegistrations.values(); + for (ServletRegistration sr : values) { + Collection mappings = sr.getMappings(); + if (mappings.contains(urlPattern)) { + return true; + } + } + return false; + } + + @Override + public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) + throws IOException, ServletException { + + HttpServletRequest req = (HttpServletRequest) request; + + + // + // Only open connections for the special requests need + // connection. (For example, the path to the servlet, JSP, ..) + // + // Avoid open connection for commons request + // (for example: image, css, javascript,... ) + // + if (this.needJDBC(req)) { + + System.out.println("Open Connection for: " + req.getServletPath()); + + Connection conn = null; + try { + // Create connection + conn = ConnectionUtils.getConnection(); + + // Set Auto commit to false + conn.setAutoCommit(false); + + // Store connection in attribute of request. + MyUtils.storeConnection(request, conn); + + // Allow request to go forward + // (Go to the next filter or target) + chain.doFilter(request, response); + + // Commit change. + conn.commit(); + } catch (Exception e) { + e.printStackTrace(); + ConnectionUtils.rollbackQuietly(conn); + throw new ServletException(); + } finally { + ConnectionUtils.closeQuietly(conn); + } + } + + // With commons requests (images, css, html, ..) + // No need to open the connection. + else { + + // Allow request to go forward + // (Go to the next filter or target) + chain.doFilter(request, response); + } + + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/servlet/CreateProductServlet.java b/src/com/lanihuang/simplewebapp/servlet/CreateProductServlet.java new file mode 100644 index 0000000..b50df5a --- /dev/null +++ b/src/com/lanihuang/simplewebapp/servlet/CreateProductServlet.java @@ -0,0 +1,35 @@ +package com.lanihuang.simplewebapp.servlet; + +import java.io.IOException; +import javax.servlet.ServletException; +import javax.servlet.annotation.WebServlet; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +import javax.servlet.RequestDispatcher; + +@WebServlet(urlPatterns = { "/createProduct" }) +public class CreateProductServlet extends HttpServlet { + private static final long serialVersionUID = 1L; + + public CreateProductServlet() { + super(); + } + + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + RequestDispatcher dispatcher = request.getServletContext() + .getRequestDispatcher("/WEB-INF/views/createProductView.jsp"); + dispatcher.forward(request, response); + + } + + @Override + protected void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + doGet(request, response); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/servlet/DeleteProductServlet.java b/src/com/lanihuang/simplewebapp/servlet/DeleteProductServlet.java new file mode 100644 index 0000000..a180327 --- /dev/null +++ b/src/com/lanihuang/simplewebapp/servlet/DeleteProductServlet.java @@ -0,0 +1,67 @@ +package com.lanihuang.simplewebapp.servlet; + +import java.io.IOException; +import java.sql.Connection; +import java.sql.SQLException; + +import javax.servlet.RequestDispatcher; +import javax.servlet.ServletException; +import javax.servlet.annotation.WebServlet; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +import com.lanihuang.simplewebapp.utils.DBUtils; +import com.lanihuang.simplewebapp.utils.MyUtils; + +@WebServlet(urlPatterns = { "/deleteProduct" }) +public class DeleteProductServlet extends HttpServlet { + private static final long serialVersionUID = 1L; + + public DeleteProductServlet() { + super(); + } + + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + Connection conn = MyUtils.getStoredConnection(request); + + String code = (String) request.getParameter("code"); + + String errorString = null; + + try { + DBUtils.deleteProduct(conn, code); + } catch (SQLException e) { + e.printStackTrace(); + errorString = e.getMessage(); + } + + + // If an error redirected to an error page. + if (errorString != null) { + + // Store the information in the request attribute, before forward to views. + request.setAttribute("errorString", errorString); + // + RequestDispatcher dispatcher = request.getServletContext() + .getRequestDispatcher("/WEB-INF/views/deleteProductErrorView.jsp"); + dispatcher.forward(request, response); + } + + // If everything nice. + // Redirect to the product listing page. + else { + response.sendRedirect(request.getContextPath() + "/productList"); + } + + } + + @Override + protected void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + doGet(request, response); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/servlet/DoCreateProductServlet.java b/src/com/lanihuang/simplewebapp/servlet/DoCreateProductServlet.java new file mode 100644 index 0000000..3c40dde --- /dev/null +++ b/src/com/lanihuang/simplewebapp/servlet/DoCreateProductServlet.java @@ -0,0 +1,86 @@ +package com.lanihuang.simplewebapp.servlet; + +import java.io.IOException; +import java.sql.Connection; +import java.sql.SQLException; + +import javax.servlet.RequestDispatcher; +import javax.servlet.ServletException; +import javax.servlet.annotation.WebServlet; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +import com.lanihuang.simplewebapp.beans.Product; +import com.lanihuang.simplewebapp.utils.DBUtils; +import com.lanihuang.simplewebapp.utils.MyUtils; + +@WebServlet(urlPatterns = { "/doCreateProduct" }) +public class DoCreateProductServlet extends HttpServlet { + private static final long serialVersionUID = 1L; + + public DoCreateProductServlet() { + super(); + } + + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + Connection conn = MyUtils.getStoredConnection(request); + + String code = (String) request.getParameter("code"); + String name = (String) request.getParameter("name"); + String priceStr = (String) request.getParameter("price"); + float price = 0; + try { + price = Float.parseFloat(priceStr); + } catch (Exception e) { + } + Product product = new Product(code, name, price); + + String errorString = null; + + // Product ID is the string literal [a-zA-Z_0-9] + // with at least 1 character + String regex = "\\w+"; + + if (code == null || !code.matches(regex)) { + errorString = "Product Code invalid!"; + } + + if (errorString == null) { + try { + DBUtils.insertProduct(conn, product); + } catch (SQLException e) { + e.printStackTrace(); + errorString = e.getMessage(); + } + } + + // Store infomation to request attribute, before forward to views. + request.setAttribute("errorString", errorString); + request.setAttribute("product", product); + + // If error, forward to Edit page. + if (errorString != null) { + RequestDispatcher dispatcher = request.getServletContext() + .getRequestDispatcher("/WEB-INF/views/createProductView.jsp"); + dispatcher.forward(request, response); + + } + + // If everything nice. + // Redirect to the product listing page. + else { + response.sendRedirect(request.getContextPath() + "/productList"); + } + + } + + @Override + protected void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + doGet(request, response); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/servlet/DoEditProductServlet.java b/src/com/lanihuang/simplewebapp/servlet/DoEditProductServlet.java new file mode 100644 index 0000000..d7a2500 --- /dev/null +++ b/src/com/lanihuang/simplewebapp/servlet/DoEditProductServlet.java @@ -0,0 +1,75 @@ +package com.lanihuang.simplewebapp.servlet; + +import java.io.IOException; +import java.sql.Connection; +import java.sql.SQLException; +import javax.servlet.RequestDispatcher; +import javax.servlet.ServletException; +import javax.servlet.annotation.WebServlet; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +import com.lanihuang.simplewebapp.beans.Product; +import com.lanihuang.simplewebapp.utils.DBUtils; +import com.lanihuang.simplewebapp.utils.MyUtils; + +@WebServlet(urlPatterns = { "/doEditProduct" }) +public class DoEditProductServlet extends HttpServlet { + private static final long serialVersionUID = 1L; + + public DoEditProductServlet() { + super(); + } + + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + Connection conn = MyUtils.getStoredConnection(request); + + String code = (String) request.getParameter("code"); + String name = (String) request.getParameter("name"); + String priceStr = (String) request.getParameter("price"); + float price = 0; + try { + price = Float.parseFloat(priceStr); + } catch (Exception e) { + } + Product product = new Product(code, name, price); + + String errorString = null; + + try { + DBUtils.updateProduct(conn, product); + } catch (SQLException e) { + e.printStackTrace(); + errorString = e.getMessage(); + } + + // Store infomation to request attribute, before forward to views. + request.setAttribute("errorString", errorString); + request.setAttribute("product", product); + + + // If error, forward to Edit page. + if (errorString != null) { + RequestDispatcher dispatcher = request.getServletContext() + .getRequestDispatcher("/WEB-INF/views/editProductView.jsp"); + dispatcher.forward(request, response); + } + + // If everything nice. + // Redirect to the product listing page. + else { + response.sendRedirect(request.getContextPath() + "/productList"); + } + + } + + @Override + protected void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + doGet(request, response); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/servlet/DoLoginServlet.java b/src/com/lanihuang/simplewebapp/servlet/DoLoginServlet.java new file mode 100644 index 0000000..8b9b1e0 --- /dev/null +++ b/src/com/lanihuang/simplewebapp/servlet/DoLoginServlet.java @@ -0,0 +1,109 @@ +package com.lanihuang.simplewebapp.servlet; + +import java.io.IOException; +import java.sql.Connection; +import java.sql.SQLException; + +import javax.servlet.RequestDispatcher; +import javax.servlet.ServletException; +import javax.servlet.annotation.WebServlet; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +import javax.servlet.http.HttpSession; + +import com.lanihuang.simplewebapp.beans.UserAccount; +import com.lanihuang.simplewebapp.utils.DBUtils; +import com.lanihuang.simplewebapp.utils.MyUtils; + +@WebServlet(urlPatterns = { "/doLogin" }) +public class DoLoginServlet extends HttpServlet { + private static final long serialVersionUID = 1L; + + public DoLoginServlet() { + super(); + } + + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + + String userName = request.getParameter("userName"); + String password = request.getParameter("password"); + String rememberMeStr = request.getParameter("rememberMe"); + boolean remember = "Y".equals(rememberMeStr); + + + UserAccount user = null; + boolean hasError = false; + String errorString = null; + + if (userName == null || password == null + || userName.length() == 0 || password.length() == 0) { + hasError = true; + errorString = "Required username and password!"; + } else { + Connection conn = MyUtils.getStoredConnection(request); + try { + + user = DBUtils.findUser(conn, userName, password); + + if (user == null) { + hasError = true; + errorString = "User Name or password invalid"; + } + } catch (SQLException e) { + e.printStackTrace(); + hasError = true; + errorString = e.getMessage(); + } + } + + // If error, forward to /WEB-INF/views/login.jsp + if (hasError) { + user = new UserAccount(); + user.setUserName(userName); + user.setPassword(password); + + + // Store information in request attribute, before forward. + request.setAttribute("errorString", errorString); + request.setAttribute("user", user); + + + // Forward to /WEB-INF/views/login.jsp + RequestDispatcher dispatcher // + = this.getServletContext().getRequestDispatcher("/WEB-INF/views/loginView.jsp"); + + dispatcher.forward(request, response); + } + + // If no error + // Store user information in Session + // And redirect to userInfo page. + else { + HttpSession session = request.getSession(); + MyUtils.storeLoginedUser(session, user); + + // If user checked "Remember me". + if (remember) { + MyUtils.storeUserCookie(response, user); + } + + // Else delete cookie. + else { + MyUtils.deleteUserCookie(response); + } + + // Redirect to userInfo page. + response.sendRedirect(request.getContextPath() + "/userInfo"); + } + } + + @Override + protected void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + doGet(request, response); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/servlet/EditProductServlet.java b/src/com/lanihuang/simplewebapp/servlet/EditProductServlet.java new file mode 100644 index 0000000..1892854 --- /dev/null +++ b/src/com/lanihuang/simplewebapp/servlet/EditProductServlet.java @@ -0,0 +1,69 @@ +package com.lanihuang.simplewebapp.servlet; + +import java.io.IOException; +import java.sql.Connection; +import java.sql.SQLException; + +import javax.servlet.RequestDispatcher; +import javax.servlet.ServletException; +import javax.servlet.annotation.WebServlet; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +import com.lanihuang.simplewebapp.beans.Product; +import com.lanihuang.simplewebapp.utils.DBUtils; +import com.lanihuang.simplewebapp.utils.MyUtils; + +@WebServlet(urlPatterns = { "/editProduct" }) +public class EditProductServlet extends HttpServlet { + private static final long serialVersionUID = 1L; + + public EditProductServlet() { + super(); + } + + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + Connection conn = MyUtils.getStoredConnection(request); + + String code = (String) request.getParameter("code"); + + Product product = null; + + String errorString = null; + + try { + product = DBUtils.findProduct(conn, code); + } catch (SQLException e) { + e.printStackTrace(); + errorString = e.getMessage(); + } + + + // If no error. + // The product does not exist to edit. + // Redirect to productList page. + if (errorString != null && product == null) { + response.sendRedirect(request.getServletPath() + "/productList"); + return; + } + + // Store errorString in request attribute, before forward to views. + request.setAttribute("errorString", errorString); + request.setAttribute("product", product); + + RequestDispatcher dispatcher = request.getServletContext() + .getRequestDispatcher("/WEB-INF/views/editProductView.jsp"); + dispatcher.forward(request, response); + + } + + @Override + protected void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + doGet(request, response); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/servlet/HomeServlet.java b/src/com/lanihuang/simplewebapp/servlet/HomeServlet.java new file mode 100644 index 0000000..a9c40aa --- /dev/null +++ b/src/com/lanihuang/simplewebapp/servlet/HomeServlet.java @@ -0,0 +1,38 @@ +package com.lanihuang.simplewebapp.servlet; + +import java.io.IOException; + +import javax.servlet.RequestDispatcher; +import javax.servlet.ServletException; +import javax.servlet.annotation.WebServlet; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +@WebServlet(urlPatterns = { "/home"}) +public class HomeServlet extends HttpServlet { + private static final long serialVersionUID = 1L; + + public HomeServlet() { + super(); + } + + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + + // Forward to /WEB-INF/views/homeView.jsp + // (Users can not access directly into JSP pages placed in WEB-INF) + RequestDispatcher dispatcher = this.getServletContext().getRequestDispatcher("/WEB-INF/views/homeView.jsp"); + + dispatcher.forward(request, response); + + } + + @Override + protected void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + doGet(request, response); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/servlet/LoginServlet.java b/src/com/lanihuang/simplewebapp/servlet/LoginServlet.java new file mode 100644 index 0000000..2a7acb3 --- /dev/null +++ b/src/com/lanihuang/simplewebapp/servlet/LoginServlet.java @@ -0,0 +1,38 @@ +package com.lanihuang.simplewebapp.servlet; + +import java.io.IOException; + +import javax.servlet.RequestDispatcher; +import javax.servlet.ServletException; +import javax.servlet.annotation.WebServlet; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +@WebServlet(urlPatterns = { "/login"}) +public class LoginServlet extends HttpServlet { + private static final long serialVersionUID = 1L; + + public LoginServlet() { + super(); + } + + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + + // Forward to /WEB-INF/views/loginView.jsp + // (Users can not access directly into JSP pages placed in WEB-INF) + RequestDispatcher dispatcher = this.getServletContext().getRequestDispatcher("/WEB-INF/views/loginView.jsp"); + + dispatcher.forward(request, response); + + } + + @Override + protected void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + doGet(request, response); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/servlet/ProductListServlet.java b/src/com/lanihuang/simplewebapp/servlet/ProductListServlet.java new file mode 100644 index 0000000..d445722 --- /dev/null +++ b/src/com/lanihuang/simplewebapp/servlet/ProductListServlet.java @@ -0,0 +1,58 @@ +package com.lanihuang.simplewebapp.servlet; + +import java.io.IOException; +import java.sql.Connection; +import java.sql.SQLException; +import java.util.List; + +import javax.servlet.RequestDispatcher; +import javax.servlet.ServletException; +import javax.servlet.annotation.WebServlet; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +import com.lanihuang.simplewebapp.beans.Product; +import com.lanihuang.simplewebapp.utils.DBUtils; +import com.lanihuang.simplewebapp.utils.MyUtils; + +@WebServlet(urlPatterns = { "/productList" }) +public class ProductListServlet extends HttpServlet { + private static final long serialVersionUID = 1L; + + public ProductListServlet() { + super(); + } + + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + Connection conn = MyUtils.getStoredConnection(request); + + String errorString = null; + List list = null; + try { + list = DBUtils.queryProduct(conn); + } catch (SQLException e) { + e.printStackTrace(); + errorString = e.getMessage(); + } + + // Store info in request attribute, before forward to views + request.setAttribute("errorString", errorString); + request.setAttribute("productList", list); + + + // Forward to /WEB-INF/views/productListView.jsp + RequestDispatcher dispatcher = request.getServletContext() + .getRequestDispatcher("/WEB-INF/views/productListView.jsp"); + dispatcher.forward(request, response); + } + + @Override + protected void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + doGet(request, response); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/servlet/UserInfoServlet.java b/src/com/lanihuang/simplewebapp/servlet/UserInfoServlet.java new file mode 100644 index 0000000..1bb0603 --- /dev/null +++ b/src/com/lanihuang/simplewebapp/servlet/UserInfoServlet.java @@ -0,0 +1,58 @@ +package com.lanihuang.simplewebapp.servlet; + +import java.io.IOException; + +import javax.servlet.RequestDispatcher; +import javax.servlet.ServletException; +import javax.servlet.annotation.WebServlet; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +import javax.servlet.http.HttpSession; + +import com.lanihuang.simplewebapp.beans.UserAccount; +import com.lanihuang.simplewebapp.utils.MyUtils; + +@WebServlet(urlPatterns = { "/userInfo" }) +public class UserInfoServlet extends HttpServlet { + private static final long serialVersionUID = 1L; + + public UserInfoServlet() { + super(); + } + + @Override + protected void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + HttpSession session = request.getSession(); + + + // Check User has logged on + UserAccount loginedUser = MyUtils.getLoginedUser(session); + + + // Not logged in + if (loginedUser == null) { + + // Redirect to login page. + response.sendRedirect(request.getContextPath() + "/login"); + return; + } + + // Store info in request attribute + request.setAttribute("user", loginedUser); + + + // Logined, forward to /WEB-INF/views/userInfoView.jsp + RequestDispatcher dispatcher = this.getServletContext().getRequestDispatcher("/WEB-INF/views/userInfoView.jsp"); + dispatcher.forward(request, response); + + } + + @Override + protected void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + doGet(request, response); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/utils/DBUtils.java b/src/com/lanihuang/simplewebapp/utils/DBUtils.java new file mode 100644 index 0000000..6f879ee --- /dev/null +++ b/src/com/lanihuang/simplewebapp/utils/DBUtils.java @@ -0,0 +1,127 @@ +package com.lanihuang.simplewebapp.utils; + +import java.sql.Connection; +import java.sql.PreparedStatement; +import java.sql.ResultSet; +import java.sql.SQLException; +import java.util.ArrayList; +import java.util.List; + +import com.lanihuang.simplewebapp.beans.Product; +import com.lanihuang.simplewebapp.beans.UserAccount; + +public class DBUtils { + + public static UserAccount findUser(Connection conn, String userName, String password) throws SQLException { + + String sql = "Select a.User_Name, a.Password, a.Gender from User_Account a " + + " where a.User_Name = ? and a.password= ?"; + + PreparedStatement pstm = conn.prepareStatement(sql); + pstm.setString(1, userName); + pstm.setString(2, password); + ResultSet rs = pstm.executeQuery(); + + if (rs.next()) { + String gender = rs.getString("Gender"); + UserAccount user = new UserAccount(); + user.setUserName(userName); + user.setPassword(password); + user.setGender(gender); + return user; + } + return null; + } + + public static UserAccount findUser(Connection conn, String userName) throws SQLException { + + String sql = "Select a.User_Name, a.Password, a.Gender from User_Account a " + " where a.User_Name = ? "; + + PreparedStatement pstm = conn.prepareStatement(sql); + pstm.setString(1, userName); + + ResultSet rs = pstm.executeQuery(); + + if (rs.next()) { + String password = rs.getString("Password"); + String gender = rs.getString("Gender"); + UserAccount user = new UserAccount(); + user.setUserName(userName); + user.setPassword(password); + user.setGender(gender); + return user; + } + return null; + } + + public static List queryProduct(Connection conn) throws SQLException { + String sql = "Select a.Code, a.Name, a.Price from Product a "; + + PreparedStatement pstm = conn.prepareStatement(sql); + + ResultSet rs = pstm.executeQuery(); + List list = new ArrayList(); + while (rs.next()) { + String code = rs.getString("Code"); + String name = rs.getString("Name"); + float price = rs.getFloat("Price"); + Product product = new Product(); + product.setCode(code); + product.setName(name); + product.setPrice(price); + list.add(product); + } + return list; + } + + public static Product findProduct(Connection conn, String code) throws SQLException { + String sql = "Select a.Code, a.Name, a.Price from Product a where a.Code=?"; + + PreparedStatement pstm = conn.prepareStatement(sql); + pstm.setString(1, code); + + ResultSet rs = pstm.executeQuery(); + + while (rs.next()) { + String name = rs.getString("Name"); + float price = rs.getFloat("Price"); + Product product = new Product(code, name, price); + return product; + } + return null; + } + + public static void updateProduct(Connection conn, Product product) throws SQLException { + String sql = "Update Product set Name =?, Price=? where Code=? "; + + PreparedStatement pstm = conn.prepareStatement(sql); + + pstm.setString(1, product.getName()); + pstm.setFloat(2, product.getPrice()); + pstm.setString(3, product.getCode()); + pstm.executeUpdate(); + } + + public static void insertProduct(Connection conn, Product product) throws SQLException { + String sql = "Insert into Product(Code, Name,Price) values (?,?,?)"; + + PreparedStatement pstm = conn.prepareStatement(sql); + + pstm.setString(1, product.getCode()); + pstm.setString(2, product.getName()); + pstm.setFloat(3, product.getPrice()); + + pstm.executeUpdate(); + } + + public static void deleteProduct(Connection conn, String code) throws SQLException { + String sql = "Delete from Product where Code= ?"; + + PreparedStatement pstm = conn.prepareStatement(sql); + + pstm.setString(1, code); + + pstm.executeUpdate(); + } + +} \ No newline at end of file diff --git a/src/com/lanihuang/simplewebapp/utils/MyUtils.java b/src/com/lanihuang/simplewebapp/utils/MyUtils.java new file mode 100644 index 0000000..ea25b8d --- /dev/null +++ b/src/com/lanihuang/simplewebapp/utils/MyUtils.java @@ -0,0 +1,78 @@ +package com.lanihuang.simplewebapp.utils; + +import java.sql.Connection; + +import javax.servlet.ServletRequest; +import javax.servlet.http.Cookie; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +import javax.servlet.http.HttpSession; + +import com.lanihuang.simplewebapp.beans.UserAccount; + +public class MyUtils { + + public static final String ATT_NAME_CONNECTION = "ATTRIBUTE_FOR_CONNECTION"; + + private static final String ATT_NAME_USER_NAME = "ATTRIBUTE_FOR_STORE_USER_NAME_IN_COOKIE"; + + + // Store Connection in request attribute. + // (Information stored only exist during requests) + public static void storeConnection(ServletRequest request, Connection conn) { + request.setAttribute(ATT_NAME_CONNECTION, conn); + } + + // Get the Connection object has been stored in one attribute of the request. + public static Connection getStoredConnection(ServletRequest request) { + Connection conn = (Connection) request.getAttribute(ATT_NAME_CONNECTION); + return conn; + } + + // Store user info in Session. + public static void storeLoginedUser(HttpSession session, UserAccount loginedUser) { + + // On the JSP can access ${loginedUser} + session.setAttribute("loginedUser", loginedUser); + } + + + // Get the user information stored in the session. + public static UserAccount getLoginedUser(HttpSession session) { + UserAccount loginedUser = (UserAccount) session.getAttribute("loginedUser"); + return loginedUser; + } + + + // Store info in Cookie + public static void storeUserCookie(HttpServletResponse response, UserAccount user) { + System.out.println("Store user cookie"); + Cookie cookieUserName = new Cookie(ATT_NAME_USER_NAME, user.getUserName()); + + // 1 day (Convert to seconds) + cookieUserName.setMaxAge(24 * 60 * 60); + response.addCookie(cookieUserName); + } + + public static String getUserNameInCookie(HttpServletRequest request) { + Cookie[] cookies = request.getCookies(); + if (cookies != null) { + for (Cookie cookie : cookies) { + if (ATT_NAME_USER_NAME.equals(cookie.getName())) { + return cookie.getValue(); + } + } + } + return null; + } + + + // Delete cookie. + public static void deleteUserCookie(HttpServletResponse response) { + Cookie cookieUserName = new Cookie(ATT_NAME_USER_NAME, null); + + // 0 seconds (Expires immediately) + cookieUserName.setMaxAge(0); + response.addCookie(cookieUserName); + } +} \ No newline at end of file