質問編集履歴
2
追記
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```
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```JAVA
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【LoginAction.java】
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package application;
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```JSP
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【home.jsp】
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```JSP
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【A.jsp】
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<%@ page language="java" contentType="text/html; charset=UTF-8"
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```JSP
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【B.jsp】
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```
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```Servlet
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【SampleServlet.java】
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package application;
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【ログインフォーム】
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【フレームでの２画面表示】
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【POST実行後】
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【Eclipse構成】
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実現したいことの簡易コードを作成しました。
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A.jspからコメントをPOSTして、B.jspのコメントを書き換えたいです。
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1
再現簡易コードを作成しました
test
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File without changes
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test
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@@ -33,3 +33,443 @@
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考え方自体が間違っているでしょうか。
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ご教示いただけますと幸いです。
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```loin-in.jsp
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<%@page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title>ログインフォーム</title>
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<style>
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from backgroud-color: red;
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</style>
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</head>
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<body>
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<div class="log-form" align="center">
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<h5>Login to your account</h5>
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<form action = "http://localhost:8080/fileConnector/LoginAction" method="post">
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<p>user_id : <input type="text" name = "user_id" title="userid" placeholder="userid" /></p>
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<p>user_comment : <input type="text" name = "user_comment" size="30" maxlength="20" placeholder="comment" /></p>
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<p><input type="submit" value="Login"></p>
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</form>
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</div><!--end log form -->
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</body>
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</html>
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```
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```LoginAction.java
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package application;
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import java.io.IOException;
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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 bean.User;
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/**
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* Servlet implementation class TEST
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*/
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@WebServlet("/LoginAction")
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public class LoginAction 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 LoginAction() {
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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 response)
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*/
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protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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// TODO Auto-generated method stub
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response.getWriter().append("Served at: ").append(request.getContextPath());
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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) throws ServletException, IOException {
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// TODO Auto-generated method stub
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request.setCharacterEncoding("UTF-8");
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HttpSession session = request.getSession();
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int user_id = Integer.parseInt(request.getParameter("user_id"));
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String user_password = request.getParameter("user_password");
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String user_comment = request.getParameter("user_comment");
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User user = new User();
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user.setUserId(user_id);
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user.setPassword(user_password);
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user.setComment(user_comment);
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session.setAttribute("user", user);
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request.getRequestDispatcher("home.jsp").forward(request, response);
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}
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}
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```
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```home.jsp
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<%@ page language="java" contentType="text/html; charset=UTF-8"
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pageEncoding="UTF-8"%>
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title>Insert title here</title>
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</head>
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<frameset cols="500,*">
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<frame src="A.jsp" name="frame1" title="左フレーム">
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<frame src="B.jsp" name="frame2" title="右フレーム">
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<noframes>
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<body>
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<p>フレームの代替内容</p>
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</body>
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</noframes>
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</frameset>
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</body>
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</html>
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```
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273
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```A.jsp
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274
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<%@ page language="java" contentType="text/html; charset=UTF-8"
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276
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pageEncoding="UTF-8"%>
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<!DOCTYPE html>
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<html>
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282
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<head>
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284
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285
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<meta charset="UTF-8">
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286
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<title>Insert title here</title>
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</head>
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<body>
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<h3>A.jsp</h3>
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<br><br>
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<form action="http://localhost:8080/fileConnector/SampleServlet" method="post">
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<p>コメントの書き換え<br>
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<input type="text" name = "user_comment" size="30" maxlength="20" placeholder=${user.comment}></p>
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+
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305
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<p><input type="submit" value="update"></p>
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306
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</form>
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308
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</body>
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</html>
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314
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+
```
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316
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|
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317
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+
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318
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+
|
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319
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+
```B.jsp
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320
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+
|
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321
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+
<%@ page language="java" contentType="text/html; charset=UTF-8"
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322
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+
|
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323
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pageEncoding="UTF-8"%>
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324
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+
|
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325
|
+
<%@page import="bean.User"%>
|
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326
|
+
|
|
327
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+
|
|
328
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+
|
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329
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+
<!DOCTYPE html>
|
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330
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+
|
|
331
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+
<html>
|
|
332
|
+
|
|
333
|
+
<head>
|
|
334
|
+
|
|
335
|
+
<meta charset="UTF-8">
|
|
336
|
+
|
|
337
|
+
<title>Insert title here</title>
|
|
338
|
+
|
|
339
|
+
</head>
|
|
340
|
+
|
|
341
|
+
<body>
|
|
342
|
+
|
|
343
|
+
<h3>B.jsp</h3>
|
|
344
|
+
|
|
345
|
+
<br><br>
|
|
346
|
+
|
|
347
|
+
|
|
348
|
+
|
|
349
|
+
<% User user = (User) session.getAttribute("user");%>
|
|
350
|
+
|
|
351
|
+
<p>ユーザーID ： <%=user.getUserId() %></p>
|
|
352
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+
|
|
353
|
+
<p>コメント ： <%=user.getComment() %></p>
|
|
354
|
+
|
|
355
|
+
|
|
356
|
+
|
|
357
|
+
</body>
|
|
358
|
+
|
|
359
|
+
</html>
|
|
360
|
+
|
|
361
|
+
```
|
|
362
|
+
|
|
363
|
+
```SampleServlet.java
|
|
364
|
+
|
|
365
|
+
package application;
|
|
366
|
+
|
|
367
|
+
|
|
368
|
+
|
|
369
|
+
|
|
370
|
+
|
|
371
|
+
import java.io.IOException;
|
|
372
|
+
|
|
373
|
+
|
|
374
|
+
|
|
375
|
+
import javax.servlet.RequestDispatcher;
|
|
376
|
+
|
|
377
|
+
import javax.servlet.ServletException;
|
|
378
|
+
|
|
379
|
+
import javax.servlet.annotation.WebServlet;
|
|
380
|
+
|
|
381
|
+
import javax.servlet.http.HttpServlet;
|
|
382
|
+
|
|
383
|
+
import javax.servlet.http.HttpServletRequest;
|
|
384
|
+
|
|
385
|
+
import javax.servlet.http.HttpServletResponse;
|
|
386
|
+
|
|
387
|
+
import javax.servlet.http.HttpSession;
|
|
388
|
+
|
|
389
|
+
|
|
390
|
+
|
|
391
|
+
import bean.User;
|
|
392
|
+
|
|
393
|
+
|
|
394
|
+
|
|
395
|
+
/**
|
|
396
|
+
|
|
397
|
+
* Servlet implementation class SampleServlet
|
|
398
|
+
|
|
399
|
+
*/
|
|
400
|
+
|
|
401
|
+
@WebServlet("/SampleServlet")
|
|
402
|
+
|
|
403
|
+
public class SampleServlet extends HttpServlet {
|
|
404
|
+
|
|
405
|
+
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
|
|
406
|
+
|
|
407
|
+
|
|
408
|
+
|
|
409
|
+
request.setCharacterEncoding("UTF-8");
|
|
410
|
+
|
|
411
|
+
|
|
412
|
+
|
|
413
|
+
HttpSession session = request.getSession();
|
|
414
|
+
|
|
415
|
+
String user_comment = request.getParameter("user_comment");
|
|
416
|
+
|
|
417
|
+
|
|
418
|
+
|
|
419
|
+
User user = new User();
|
|
420
|
+
|
|
421
|
+
user.setComment(user_comment);
|
|
422
|
+
|
|
423
|
+
|
|
424
|
+
|
|
425
|
+
session.setAttribute("user", user);
|
|
426
|
+
|
|
427
|
+
|
|
428
|
+
|
|
429
|
+
RequestDispatcher dispatcher = request.getRequestDispatcher("B.jsp");
|
|
430
|
+
|
|
431
|
+
dispatcher.forward(request, response);
|
|
432
|
+
|
|
433
|
+
}
|
|
434
|
+
|
|
435
|
+
|
|
436
|
+
|
|
437
|
+
}
|
|
438
|
+
|
|
439
|
+
|
|
440
|
+
|
|
441
|
+
```
|
|
442
|
+
|
|
443
|
+
|
|
444
|
+
|
|
445
|
+
|
|
446
|
+
|
|
447
|
+
|
|
448
|
+
|
|
449
|
+
|
|
450
|
+
|
|
451
|
+
|
|
452
|
+
|
|
453
|
+
|
|
454
|
+
|
|
455
|
+
|
|
456
|
+
|
|
457
|
+
実現したいことの簡易コードを作成しました。
|
|
458
|
+
|
|
459
|
+
A.jspからコメントをPOSTして、B.jspのコメントを書き換えたいです。
|
|
460
|
+
|
|
461
|
+
その際には、innerHTMLは使用せずにBeanを書き換えたものを再表示する方法で
|
|
462
|
+
|
|
463
|
+
B.jspを更新しなければなりません。
|
|
464
|
+
|
|
465
|
+
|
|
466
|
+
|
|
467
|
+
作成いただいたコードを実行すると、A.jspがB.jspに（そのようなコーディングであるためなのですが）なります。
|
|
468
|
+
|
|
469
|
+
|
|
470
|
+
|
|
471
|
+
A.jspのテキストが「こんにちは」のまま、B.jspのBean再読み込みはできるのでしょうか。
|
|
472
|
+
|
|
473
|
+
|
|
474
|
+
|
|
475
|
+
どうかお知恵をお貸しください。
|