質問編集履歴
1
ソースの追加・誤字修正
test
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### ソースコード
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JSP
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```
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<%@ page language="java" contentType="text/html; charset=UTF-8"
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pageEncoding="UTF-8"%>
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<%@ page import="javax.servlet.ServletContext"%>
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<%@ page import="category.CategoryList"%>
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<%@ page import="category.Category"%>
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>Insert title here</title>
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</head>
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<body>
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<div align="left">
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<h1>ブログ作成</h1>
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</div>
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<hr>
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<div align="center">
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<form action="Master" method="post">
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<div align="left">
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<input type="text" placeholder="タイトル" name="title" size="80">
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<p />
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<%
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ServletContext context = this.getServletContext();
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CategoryList categoryList = (CategoryList) context.getAttribute("CategoryList");
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%>
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<div align="right">
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カテゴリー： <select name="category">
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<%
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for (Category category : categoryList.getList()) {
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%>
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<option value=<%=category%>><%=category.getCategoryName()%></option>
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<%
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}
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%>
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</select>
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</div>
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<textarea name="body" cols="60" rows="20"></textarea>
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</div>
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<div align="right">
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<button type="submit" name="Action" value="create">作成</button>
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</div>
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</form>
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</div>
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</body>
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</html>
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```
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JavaServlet
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```
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package controller;
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import java.io.IOException;
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import javax.servlet.RequestDispatcher;
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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 model.User;
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/**
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* Servlet implementation class MasterController
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*/
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@WebServlet("/Master")
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public class MasterController extends HttpServlet {
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private static final long serialVersionUID = 1L;
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/**
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* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
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*/
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protected void doGet(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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// 直接起動防止
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RequestDispatcher rd = request.getRequestDispatcher("top.jsp");
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rd.forward(request, response);
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}
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/**
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* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
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*/
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protected void doPost(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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// エンコード
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request.setCharacterEncoding("UTF-8");
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response.setCharacterEncoding("UTF-8");
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// 処理行動種別
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String action = null;
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// セッション取得
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HttpSession session = request.getSession();
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// 事前ログインユーザ定義
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if (session.getAttribute("User") == null) {
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User user = new User("admin", "suzukitarou", "suzukin");
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session.setAttribute("User", user);
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}
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action = request.getParameter("Action"); // form送信
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String url = null;
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if (action == null) {
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action = "null";
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}
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// 行動別処理
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switch (action) {
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/*執筆系*/
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case "write":
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if (session.getAttribute("User") != null) {
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url = "write.jsp";
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} else {
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url = "login.jsp";
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}
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break;
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// case "login": // ログイン処理
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// url = "Login"; // ログインコントローラ
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// String userId = request.getParameter("userid"); // ID取得
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// String password = request.getParameter("password"); // パスワード取得
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// request.setAttribute("USERID", userId); // ID送信
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// request.setAttribute("PASSWORD", password); // パスワード送信
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// request.setAttribute("ACTION","login"); // 行動送信
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// break;
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// case "agree": // ログイン完了処理
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// url = "successlogin.jsp";
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// break;
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// case "incongruous": // ログイン失敗処理
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// request.setAttribute("REASON", "incongruous");
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//
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// url = "failurelogin.jsp";
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// break;
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// case "prev": // 戻る
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// url = "top.jsp";
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// break;
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// case "goLogin": // ログイン画面に移動
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// url = "login.jsp";
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// break;
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case "create":
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// タイトル取得
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String title = request.getParameter("title");
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// 本文取得
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String body = request.getParameter("body");
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// カテゴリー取得
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// Category category = request.getParameterValues("Category");
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//Category category = (Category)request.getAttribute("category");
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// データの送信準備
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request.setAttribute("Title", title);
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request.setAttribute("Body", body);
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request.setAttribute("Category", category);
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363
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url = "valuetest.jsp";
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365
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break;
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366
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367
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368
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369
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default: // 予想とした処理と違うものが入ってきた場合
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371
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url = "top.jsp";
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373
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break;
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374
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375
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}
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376
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377
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378
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379
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// 画面遷移
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380
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381
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RequestDispatcher rd = request.getRequestDispatcher(url);
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382
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383
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rd.forward(request, response);
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384
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385
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386
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387
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}
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388
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389
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390
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391
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}
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392
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393
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```
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394
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395
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396
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19
397
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20
398
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21
399
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###試したこと
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|
@@ -24,7 +402,7 @@
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24
402
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|
25
403
|
getParameter()では文字列型しか取れず、
|
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26
404
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27
|
-
getAttribute()ではsubmit送信では
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405
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+
getAttribute()ではsubmit送信では送れなかった。
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28
406
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29
407
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30
408
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