質問編集履歴
2
文法の修正、servletの追記
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@@ -12,7 +12,7 @@
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-
###
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###JSP
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```ここに言語を入力
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<%@ page import="java.sql.*,javax.naming.*,javax.sql.*"
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contentType="text/html; charset=utf-8"%>
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@@ -47,7 +47,157 @@
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</c:if>
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</body>
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```
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###servlet
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```
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package servlet;
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import java.io.IOException;
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import java.sql.Connection;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import javax.naming.InitialContext;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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import javax.sql.DataSource;
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/**
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* Servlet implementation class loginservlet
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*/
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@WebServlet("/loginservlet")
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public class loginservlet extends HttpServlet {
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private static final long serialVersionUID = 1L;
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/**
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* @see HttpServlet#HttpServlet()
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*/
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public loginservlet() {
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super();
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// TODO Auto-generated constructor stub
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}
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/**
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* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
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* response)
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*/
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protected void doGet(HttpServletRequest request,
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HttpServletResponse response) throws ServletException, IOException {
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// TODO Auto-generated method stub
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}
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/**
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* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
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* response)
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*/
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protected void doPost(HttpServletRequest request,
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HttpServletResponse response) throws ServletException, IOException {
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// TODO Auto-generated method stub
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Connection con = null;
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PreparedStatement ps = null;
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String sql = null;
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ResultSet rs = null;
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String userid = request.getParameter("userid");
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String pass = request.getParameter("pass");
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if (userid == null || userid.length() == 0) {
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request.setAttribute("errorMessage", "ユーザ名が未入力です");
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this.getServletContext().getRequestDispatcher("/Login.jsp")
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.forward(request, response);
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} else if (pass == null || pass.length() == 0) {
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request.setAttribute("errorMessage", "パスワードが未入力です");
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this.getServletContext().getRequestDispatcher("/Login.jsp")
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.forward(request, response);
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} else {
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try {
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InitialContext initContext = new InitialContext();
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DataSource ds = (DataSource) initContext
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.lookup("java:comp/env/jdbc/Library");
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con = ds.getConnection();
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sql = "SELECT * FROM user";
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ps = con.prepareStatement(sql);
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rs = ps.executeQuery();
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boolean loginResult = false;
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boolean ad = false;
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while (rs.next()) {
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String dbuserid = rs.getString("user_id");
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String dbpassword = rs.getString("password");
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if (dbuserid.equals(userid) && dbpassword.equals(pass)) {
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loginResult = true;
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if ("1".equals(rs.getString("admin"))) {
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ad = true;
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}
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}
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}
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if (loginResult) {
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HttpSession session = request.getSession();
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session.setAttribute("loginResult", loginResult);
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session.setAttribute("admin", ad);
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if (ad == true) {
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this.getServletContext().getRequestDispatcher("/kanri_mypage.jsp")
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.forward(request, response);
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} else {
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this.getServletContext().getRequestDispatcher("/user_mypage.jsp")
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.forward(request, response);
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}
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} else {
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request.setAttribute("errorMessage", "ユーザ名またはパスワードが違います");
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this.getServletContext().getRequestDispatcher("/Login.jsp")
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.forward(request, response);
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}
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} catch (Exception e) {
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request.setAttribute("errorMessage", "システムエラーが発生しました。");
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this.getServletContext().getRequestDispatcher("/Login.jsp")
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.forward(request, response);
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throw new ServletException(e);
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} finally {
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try {
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if (rs != null) {
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rs.close();
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}
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if (ps != null) {
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ps.close();
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}
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if (con != null) {
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con.close();
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}
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} catch (Exception e) {
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}
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}
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}
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}
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}
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```
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51
201
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###試したこと
|
|
52
202
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・nullやそのま"user_id"と表示されてしまう。
|
|
53
203
|
・setAttributeの使い方が分からない。
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1
表題の変更
title
CHANGED
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@@ -1,1 +1,1 @@
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|
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1
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-
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1
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+
sessionの使い方が良く分かりません
|
body
CHANGED
|
File without changes
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