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[ch04] chapter 4.7, servlet init parameter-00
Signed-off-by: Dongho Sim <dhsim86@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| package Lesson04; | ||
|
|
||
| import javax.servlet.ServletException; | ||
| import javax.servlet.http.HttpServlet; | ||
| import javax.servlet.http.HttpServletRequest; | ||
| import javax.servlet.http.HttpServletResponse; | ||
| import java.io.IOException; | ||
| import java.io.PrintWriter; | ||
| import java.sql.*; | ||
|
|
||
| /** | ||
| * Created by Dongho on 2017. 3. 7.. | ||
| */ | ||
| @SuppressWarnings("serial") | ||
| public class MemberUpdateServlet extends HttpServlet { | ||
|
|
||
| @Override | ||
| public void doGet( | ||
| HttpServletRequest request, HttpServletResponse response | ||
| ) throws ServletException, IOException { | ||
|
|
||
| Connection conn = null; | ||
| Statement stmt = null; | ||
| ResultSet rs = null; | ||
|
|
||
| try { | ||
| Class.forName(this.getInitParameter("driver")); | ||
| conn = DriverManager.getConnection( | ||
| this.getInitParameter("url"), | ||
| this.getInitParameter("username"), | ||
| this.getInitParameter("password") | ||
| ); | ||
| stmt = conn.createStatement(); | ||
| rs = stmt.executeQuery( | ||
| "select mno, email, mname, cre_date from members" + | ||
| " where mno = " + request.getParameter("no") | ||
| ); | ||
|
|
||
| rs.next(); | ||
|
|
||
| response.setContentType("text/html; charset=UTF-8"); | ||
|
|
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| PrintWriter out = response.getWriter(); | ||
|
|
||
| out.println("<html><head><title>member info</title></head>"); | ||
| out.println("<body><h1>member info</h1>"); | ||
| out.println("<form action='update' method='post'>"); | ||
| out.println("number: <input type='text' name='no' value='" + | ||
| request.getParameter("no") + "' readonly><br>"); | ||
| out.println("name: <input type='text' name='name' value='" + | ||
| rs.getString("mname") + "'><br>"); | ||
| out.println("email: <input type='text' name='email' value='" + | ||
| rs.getString("email") + "'><br>"); | ||
| out.println("registered date: " + rs.getDate("cre_date") + "<br>"); | ||
| out.println("<input type='submit' value='save'>"); | ||
| out.println("<input type='button' value='cancel'" + | ||
| " onclick='location.href=\"list\"'>"); | ||
| out.println("</form>"); | ||
| 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) {} | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| protected void doPost( | ||
| HttpServletRequest request, HttpServletResponse response | ||
| ) throws ServletException, IOException { | ||
|
|
||
| request.setCharacterEncoding("UTF-8"); | ||
|
|
||
| Connection conn = null; | ||
| PreparedStatement stmt = null; | ||
|
|
||
| try { | ||
| Class.forName(this.getInitParameter("driver")); | ||
| conn = DriverManager.getConnection( | ||
| this.getInitParameter("url"), | ||
| this.getInitParameter("username"), | ||
| this.getInitParameter("password") | ||
| ); | ||
| stmt = conn.prepareStatement( | ||
| "update members set email = ?, mname = ?, mod_date = now()" + | ||
| " where mno = ?" | ||
| ); | ||
| stmt.setString(1, request.getParameter("email")); | ||
| stmt.setString(2, request.getParameter("name")); | ||
| stmt.setInt(3, Integer.parseInt(request.getParameter("no"))); | ||
|
|
||
| stmt.executeUpdate(); | ||
| response.sendRedirect("list"); | ||
| } | ||
| catch (Exception e) { | ||
| throw new ServletException(e); | ||
| } | ||
| finally { | ||
| try { if (stmt != null) stmt.close(); } catch (Exception e) {} | ||
| try { if (conn != null) conn.close(); } catch (Exception e) {} | ||
| } | ||
| } | ||
| } |
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