JSP でメソッドから欲しい戻り値が戻ってこない

やろうとしていること

前画面である入力画面で取得したoptionタグのvalueを、次の確認画面で文字列に変換して表示したい。

###事象のスクショ

実装内容

■入力した値をrequestで受け取り、次の画面へ渡すためのクラス

Java
1package action;
2
3import javax.servlet.http.HttpServletRequest;
4import javax.servlet.http.HttpServletResponse;
5
6import tool.Action;
7import tool.Verify;
8import util.StringQuery;
9import util.StringUtil;
10
11
12public class RegistCheckAction extends Action{
13
14	/**
15	 *
16	 * 検証用クラスのインスタンス化
17	 *
18	 */
19	Verify vr = new Verify();
20
21	public String execute(
22			HttpServletRequest request, HttpServletResponse response) throws Exception{
23
24		response.setContentType("text/html; charset=UTF-8");
25		request.setCharacterEncoding("UTF-8");
26
27		String booktitle = request.getParameter(StringQuery.BOOKTITLE);
28		String author = request.getParameter(StringQuery.AUTHOR);
29		String publisher = request.getParameter(StringQuery.PUBLISHER);
30		String publishday = request.getParameter(StringQuery.PUBLISHDAY);
31		String category = request.getParameter(StringQuery.CATEGORY);
32
33		int btcheck = vr.booktitleVerify(booktitle);
34		int aucheck = vr.authorVerify(author);
35		int yearcheck = vr.publishedYearVerify(publishday);
36
37		if(btcheck==StringUtil.MOJHI_OK && aucheck==StringUtil.MOJHI_OK
38				&& yearcheck==StringUtil.MOJHI_OK){
39
40			setBookInformation(booktitle,author,publisher,publishday,category,request);
41
42			return StringUtil.VIEW_FOLDER + StringUtil.SLASH + StringUtil.PAGE_REGIST_CHECK
43					+ StringUtil.DOT + StringUtil.JSP_EXTENSION;
44
45		}else{
46
47			setBookInformation(booktitle,author,publisher,publishday,category,request);
48
49			request.setAttribute(StringQuery.BOOKTITLE_CK, btcheck);
50			request.setAttribute(StringQuery.AUTHOR_CK, aucheck);
51			request.setAttribute(StringQuery.PUBLISHDAY_CK, yearcheck);
52
53			return StringUtil.VIEW_FOLDER + StringUtil.SLASH + StringUtil.PAGE_REGIST
54					+ StringUtil.DOT + StringUtil.JSP_EXTENSION;
55
56		}
57
58	}
59
60
61
62
63	private void setBookInformation(String booktitle, String author, String publisher, String publishday
64			,String category,HttpServletRequest request) {
65
66		request.setAttribute(StringQuery.BOOKTITLE, booktitle);
67		request.setAttribute(StringQuery.AUTHOR, author);
68		request.setAttribute(StringQuery.PUBLISHER, publisher);
69		request.setAttribute(StringQuery.PUBLISHDAY, publishday);
70		request.setAttribute(StringQuery.CATEGORY, category);
71
72	}
73
74
75
76}

■入力確認画面

JSP<%@
1	pageEncoding="UTF-8"%>
2<%@page import="util.StringUtil"%>
3<%@page import="util.StringQuery"%>
4<%@page import="java.text.SimpleDateFormat"%>
5<%@page import="java.util.Calendar"%>
6<% Calendar cal = Calendar.getInstance();%>
7
8<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
9<head>
10<title>Top</title>
11
12<link href='<%=StringUtil.CONTEXTPATH + StringUtil.INPUTCSS%>'
13	rel='stylesheet' type='text/css' />
14<script type="text/javascript" src="<%=StringUtil.MAINJS%>"></script>
15<meta charset="<%=StringUtil.SET_ENCODING %>" />
16<meta name="viewport" content="width=device-width, initial-scale=1.0" />
17
18</head>
19
20<body>
21	<div class="container">
22		<div id="login-form">
23			<div id="box">
24
25				<form
26					action="<%=StringUtil.REGISTCOMPLETE + StringUtil.CONTROLLER %>"
27					method="post">
28
29					<div>
30						BookTitle:<%=request.getAttribute(StringQuery.BOOKTITLE)%></div>
31					<div>
32						Author:<%=request.getAttribute(StringQuery.AUTHOR)%></div>
33					<div>
34						Publisher:<%=request.getAttribute(StringQuery.PUBLISHER)%></div>
35					<div>
36						Publishday:<%=request.getAttribute(StringQuery.PUBLISHDAY)%></div>
37					<div>
38						Category:
39		 <%
40         String checkchar = (String)request.getAttribute(StringQuery.CATEGORY);
41          out.println(dispCategory(checkchar)); 
42          %>
43          
44			<%! String dispCategory(String checkchar){
45        	  
46        	  if(checkchar=="7"){
47        		  
48        		  return "";
49        		  
50        	  }else if(checkchar=="1"){
51        		  
52        		  return "漫画";
53        		  
54        	  }else if(checkchar=="2"){
55        		  
56        		  return "文庫";
57        		  
58        	  }else if (checkchar=="3"){
59        		  
60        		  return "大型本";
61        		  
62        	  }else if (checkchar=="4"){
63        		  
64        		  return "雑誌";
65        		  
66        	  }else if (checkchar=="5" || checkchar.equals("5")){
67        		  
68        		  return "参考書";
69        		  
70        	  }else{
71        		  
72        		  return "新書";
73        		  
74        	  }
75        	  
76        	  }%>
77
78					</div>
79
80					<input type="hidden" name="booktitle"
81						value="<%=request.getAttribute(StringQuery.BOOKTITLE)%>" /> <input
82						type="hidden" name="author"
83						value="<%=request.getAttribute(StringQuery.AUTHOR)%>" /> <input
84						type="hidden" name="publisher"
85						value="<%=request.getAttribute(StringQuery.PUBLISHER)%>" /> <input
86						type="hidden" name="publishday"
87						value="<%=request.getAttribute(StringQuery.PUBLISHDAY)%>" /> <input
88						type="hidden" name="runame"
89						value="<%=session.getAttribute(StringQuery.USERNAME) %>" /> <input
90						type="hidden" name="registday"
91						value="<%=cal.get(Calendar.YEAR)
92          + "-" + (cal.get(Calendar.MONTH) + 1) + "-" + cal.get(Calendar.DAY_OF_MONTH)%>" />
93					<input type="hidden" name="category"
94						value="<%=request.getAttribute(StringQuery.CATEGORY)%>" />
95
96
97				
98						<input type="submit" name="submit" value="Regist" />
99					
100
101
102				</form>
103
104			</div>
105		</div>
106	</div>
107
108</body>
109</html>