解答例 - 実習課題2 - 11.DynaActionForm
(実習課題2)
実習課題1のWebアプリケーションを改良しなさい。
- パラメータのチェック機能を復活させること。
解答例
▼ディレクトリ構成は以下の通り
. └─WEB-INF web.xml(実習課題1と同じ),struts-config.xml ├─classes │ └─com │ └─techscore │ └─struts EncodingFilter.class(2章 実習課題2と同じ), │ │ MessageResources.properties(5章 実習課題2と同じ) │ └─chapter11 │ └─exercise2 InputEmployeeForm.class,OutputEmployeeAction.class ├─JSP │ └─com │ └─techscore │ └─struts │ └─chapter11 │ └─exercise2 inputEmployee.jsp,outputEmployee.jsp ├─lib strutsライブラリjarファイル └─tld struts-html.tld,struts-nested.tld ※strutsライブラリjarファイル struts.jar,commons-beanutils.jar,commons-collections.jar,commons-digester.jar,commons-logging.jar
/** * InputEmployeeForm.java * TECHSCORE Java JakartaStruts 11章 実習課題2 * * Copyright (c) 2004 Four-Dimensional Data, Inc. * */ package com.techscore.struts.chapter11.exercise2; import org.apache.struts.action.DynaActionForm; import org.apache.struts.action.ActionMapping; import org.apache.struts.action.ActionErrors; import org.apache.struts.action.ActionError; import javax.servlet.http.HttpServletRequest; public class InputEmployeeForm extends DynaActionForm{ // public void initialize(ActionMapping mapping) { // super.initialize(mapping); // } public void reset(ActionMapping mapping, HttpServletRequest request){ initialize(mapping); } public ActionErrors validate(ActionMapping mapping, HttpServletRequest request){ ActionErrors errors = new ActionErrors(); if ("".equals(get("name"))) { errors.add("name", new ActionError("invalid.name")); } if ("".equals(get("address", 0))) { errors.add("address", new ActionError("invalid.address")); } if ((((Boolean)get("existAddress2")).booleanValue()) && ("".equals(get("address", 1)))) { errors.add("address2", new ActionError("invalid.address2")); } if (((Integer)get("number")).intValue() == 0) { errors.add("number", new ActionError("invalid.number")); } return errors; } }
/** * OutputEmployeeAction.java * TECHSCORE Java JakartaStruts 11章 実習課題2 * * Copyright (c) 2004 Four-Dimensional Data, Inc. * */ package com.techscore.struts.chapter11.exercise2; import org.apache.struts.action.Action; import org.apache.struts.action.ActionMapping; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class OutputEmployeeAction extends Action{ public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception{ if (isCancelled(request)) { return mapping.getInputForward(); } return mapping.findForward("output"); } }
<!-- inputEmployee.jsp --> <!-- TECHSCORE Java JakartaStruts 11章 実習課題2 --> <!-- Copyright (c) 2004 Four-Dimensional Data, Inc. --> <%@ page contentType="text/html; charset=Windows-31J" session="false" pageEncoding="Windows-31J" %> <%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %> <html> <head><title>TECHSCORE Java JakartaStruts 11章 実習課題2</title></head> <body> <h2>社員データ入力</h2> <p>社員データを入力し、登録ボタンを押してください。</p> <html:form action="/com/techscore/struts/chapter11/exercise2/OutputEmployee.do" method="post"> <table> <tr><th>名前</th> <td><html:text property="name" /></td> <td><html:errors property="name" /></td></tr> <tr><th>住所</th> <td><html:text property="address[0]" /></td> <td><html:errors property="address" /></td></tr> <tr><th>住所2</th> <td><html:text property="address[1]" /></td> <td><html:errors property="address2" /></td></tr> <tr><th>社員番号</th> <td><html:text property="number" /></td> <td><html:errors property="number" /></td></tr> <tr><th>性別</th> <td><html:radio property="gender" value="true" />男 <html:radio property="gender" value="false" />女</td> <td></td></tr> </table> <p><html:checkbox property="existAddress2" value="true" />住所2あり</p> <p><html:submit value="登録" /> <html:cancel value="キャンセル" /></p> </html:form> ※名前、住所、社員番号は必ず入力してください。<br> ※住所2は複数登録が必要な場合のみチェックをつけて入力してください。<br> 住所2ありにチェックをつけていないと、住所2を入力していても登録されません。<br> また、住所2ありにチェックをつけている場合は、必ず住所2へ入力が必要です。<br> ※社員番号に0だけもしくは数字以外を入力すると登録されません。<br> </body> </html>
<!-- outputEmployee.jsp --> <!-- TECHSCORE Java JakartaStruts 11章 実習課題2 --> <!-- Copyright (c) 2004 Four-Dimensional Data, Inc. --> <%@ page contentType="text/html; charset=Windows-31J" session="false" pageEncoding="Windows-31J" %> <%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %> <%@ taglib uri="http://jakarta.apache.org/struts/tags-nested" prefix="nested" %> <html> <head><title>TECHSCORE Java JakartaStruts 11章 実習課題2</title></head> <body> <h2>社員データ入力</h2> <p>登録された社員データは以下の通りです</p> <jsp:useBean id="inputEmployeeForm112" class="com.techscore.struts.chapter11.exercise2.InputEmployeeForm" scope="request" /> <table border="2"> <tr><th>氏名</th> <td><nested:root name="inputEmployeeForm112"><nested:write scope="request" property="name" /></td></tr> <tr><th>住所</th> <td><nested:write scope="request" property="address[0]" /></td></tr> <% if (((Boolean)inputEmployeeForm112.get("existAddress2")).booleanValue()) { %> <tr><th>住所2</th> <td><nested:write scope="request" property="address[1]" /></td></tr> <% } %> <tr><th>社員番号</th> <td><nested:write scope="request" property="number" /></nested:root></td></tr> <% if (((Boolean)inputEmployeeForm112.get("gender")).booleanValue()) { %> <tr><th>性別</th><td>男</td></tr> <% } else { %> <tr><th>性別</th><td>女</td></tr> <% } %> </table> <p><html:link action="/com/techscore/struts/chapter11/exercise2/InputEmployee">入力に戻る</html:link></p> </body> </html>
▼struts-config.xml
<?xml version="1.0" encoding="Windows-31J" ?> <!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd"> <struts-config> <form-beans> <form-bean name="inputEmployeeForm112" type="com.techscore.struts.chapter11.exercise2.InputEmployeeForm"> <form-property name="name" type="java.lang.String" initial="" /> <form-property name="address" type="java.lang.String[]" initial="'', ''" /> <form-property name="number" type="int" initial="0" /> <form-property name="gender" type="boolean" initial="false" /> <form-property name="existAddress2" type="boolean" initial="false" /> </form-bean> </form-beans> <action-mappings> <action path="/com/techscore/struts/chapter11/exercise2/InputEmployee" forward="/WEB-INF/JSP/com/techscore/struts/chapter11/exercise2/inputEmployee.jsp" /> <action path="/com/techscore/struts/chapter11/exercise2/OutputEmployee" type="com.techscore.struts.chapter11.exercise2.OutputEmployeeAction" name="inputEmployeeForm112" scope="request" validate="true" input="/WEB-INF/JSP/com/techscore/struts/chapter11/exercise2/inputEmployee.jsp"> <forward name="output" path="/WEB-INF/JSP/com/techscore/struts/chapter11/exercise2/outputEmployee.jsp" /> </action> </action-mappings> <message-resources parameter="com.techscore.struts.MessageResources" /> </struts-config>
▼起動URLは以下の通り
WEB_ROOT/com/techscore/struts/chapter11/exercise2/InputEmployee.do
EncodingFilter.javaの参照(2章の実習課題2と同じ)
MessageResources.propertiesの参照(5章の実習課題2と同じ)
MessageResource.txtの参照(5章の実習課題2と同じ)