[ch04] chapter 4.1, JDBC use example source.

Signed-off-by: Dongho Sim <dhsim86@gmail.com>
dhsim86 · Mar 1, 2017 · 2fcf878 · 2fcf878
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diff --git a/pom.xml b/pom.xml
@@ -24,6 +24,12 @@
 
   <dependencies>
 
+    <dependency>
+      <groupId>mysql</groupId>
+      <artifactId>mysql-connector-java</artifactId>
+      <version>5.1.40</version>
+    </dependency>
+
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>

diff --git a/src/main/java/Lesson04/MemberListServlet.java b/src/main/java/Lesson04/MemberListServlet.java
@@ -0,0 +1,70 @@
+package Lesson04;
+
+import javax.servlet.GenericServlet;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.annotation.WebServlet;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.Statement;
+
+/**
+ * Created by Dongho on 2017. 3. 1..
+ */
+@WebServlet("/member/list")
+public class MemberListServlet extends GenericServlet {
+
+    @Override
+    public void service(ServletRequest request, ServletResponse response)
+        throws ServletException, IOException {
+
+        Connection conn = null;
+        Statement stmt = null;
+        ResultSet rs = null;
+
+        try {
+
+            DriverManager.registerDriver(new com.mysql.jdbc.Driver());
+
+            conn = DriverManager.getConnection(
+                    "jdbc:mysql://localhost/studydb?useUnicode=true&characterEncoding=UTF-8",
+                    "study",
+                    "study"
+            );
+            stmt = conn.createStatement();
+            rs = stmt.executeQuery(
+                    "select mno, mname, email, cre_date" +
+                    " from members" +
+                    " order by mno asc"
+            );
+
+            response.setContentType("text/html; charset=UTF-8");
+            PrintWriter out = response.getWriter();
+
+            out.println("<html><head><title>member list</title></head>");
+            out.println("<body><h1>member list</h1>");
+            while(rs.next()) {
+                out.println(
+                        rs.getInt("mno") + ", " +
+                        rs.getString("mname") + ", " +
+                        rs.getString("email") + ", " +
+                        rs.getDate("cre_date") + "<br>"
+                );
+            }
+            out.println("</body></html>");
+        }
+        catch (Exception e) {
+
+            throw new ServletException(e);
+        }
+        finally {
+            try { if (rs != null) rs.close(); } catch (Exception e) {}
+            try { if (stmt != null) stmt.close(); } catch (Exception e) {}
+            try { if (conn != null) conn.close(); } catch (Exception e) {}
+        }
+    }
+}