解答例 - 実習課題2 - 15.Javascriptでの検証/検証ルールの追加
(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。
- 偶数であることをチェックする検証ルールを作成し、int型のプロパティに対して適応すること。
解答例
▼ディレクトリ構成は以下の通り
. └─WEB-INF web.xml(13章 実習課題1と同じ),struts-config.xml,validation.xml, │ orig-validator-rules.xml, │ validator-rules.xml(Strutsで提供されているものそのまま) ├─classes │ └─com │ └─techscore │ └─struts EncodingFilter.class(2章 実習課題2と同じ) │ │ MessageResources.properties │ ├─chapter13 │ │ └─exercise2 RuleCheckForm.class(13章 実習課題2と同じ) │ └─chapter15 │ └─exercise2 ValidateEven.class ├─JSP │ └─com │ └─techscore │ └─struts │ └─chapter15 │ └─exercise2 inputTest.jsp,outputTest.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, commons-validator.jar
package com.techscore.struts.chapter15.exercise2; import java.io.Serializable; import javax.servlet.http.HttpServletRequest; import org.apache.commons.validator.Field; import org.apache.commons.validator.GenericValidator; import org.apache.commons.validator.ValidatorAction; import org.apache.commons.validator.ValidatorUtil; import org.apache.struts.action.ActionError; import org.apache.struts.action.ActionErrors; import org.apache.struts.validator.Resources; public class ValidateEven implements Serializable { public static void validateEven(Object bean, ValidatorAction action, Field field, ActionErrors errors, HttpServletRequest request) { String value = ValidatorUtil.getValueAsString(bean, field.getProperty()); //空白なら何もしない if (!GenericValidator.isBlankOrNull(value)) { if (GenericValidator.isInt(value)) { int num = Integer.parseInt(value); if (num % 2 == 0) { //値が数字でかつ偶数ならば何もしない return; } } ActionError error = Resources.getActionError(request, action, field); errors.add(field.getKey(), error); } } }
<!-- inputTest.jsp --> <!-- TECHSCORE Java JakartaStruts 15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 15章 実習課題2</title> <html:javascript formName="/com/techscore/struts/chapter15/exercise2/OutputTest" method="check" /> </head> <body> <h2>テストデータ入力</h2> <p>どちらも数字を入力し、登録ボタンを押してください。</p> <html:form action="/com/techscore/struts/chapter15/exercise2/OutputTest" onsubmit="return check(this)"> <table> <tr><th>String</th> <td><html:text property="testString" /></td> <td><html:errors property="testString" /></td></tr> <tr><th>int</th> <td><html:text property="testInt" /></td> <td><html:errors property="testInt" /></td></tr> </table> <p><html:submit value="登録"/></p> </html:form> <p>※Stringは3文字以内、intは3桁以上のみ登録可能です。</p> </body> </html>
<!-- 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-nested" prefix="nested" %> <%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %> <html> <head><title>TECHSCORE Java JakartaStruts 15章 実習課題2</title></head> <body> <h2>テストデータ入力</h2> <p>登録されたデータは以下の通りです</p> <table border="2"> <tr><th>String</th> <td><nested:root name="ruleCheckForm132"><nested:write property="testString" /></td></tr> <tr><th>int</th> <td><nested:write property="testInt" /></nested:root></td></tr> </table> <p><html:link action="/com/techscore/struts/chapter15/exercise2/InputTest">入力に戻る</html:link></p> </body> </html>
errors.header=<font color="red"> errors.footer=</font> testString.notInteger=String must be integer testInt.notInteger=int must be integer testString.maxlengthError=String length must be equal to or less than {0} testInt.minlengthError=int length must be equal to or more than {0} testString.notEven=String must be even testInt.notEven=int must be even productCode.illegal=check productCode amount.illegal=check amount name.required=製品名は必須です。 name.invalidate=製品名が不正です。
▼orig-validator-rules.xml
<?xml version="1.0" encoding="Shift_JIS" ?> <!DOCTYPE form-validation PUBLIC "-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.0//EN" "http://jakarta.apache.org/commons/dtds/validator_1_0.dtd"> <form-validation> <global> <validator name="even" classname="com.techscore.struts.chapter15.exercise2.ValidateEven" method="validateEven" methodParams="java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionErrors, javax.servlet.http.HttpServletRequest" msg="errors.invalidate"> </validator> </global> </form-validation>
<?xml version="1.0" encoding="ISO_8859-1"?> <!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="ruleCheckForm132" type="com.techscore.struts.chapter13.exercise2.RuleCheckForm" /> </form-beans> <action-mappings> <action path="/com/techscore/struts/chapter15/exercise2/InputTest" forward="/WEB-INF/JSP/com/techscore/struts/chapter15/exercise2/inputTest.jsp" /> <action path="/com/techscore/struts/chapter15/exercise2/OutputTest" name="ruleCheckForm132" scope="request" validate="true" input="/WEB-INF/JSP/com/techscore/struts/chapter15/exercise2/inputTest.jsp" forward="/WEB-INF/JSP/com/techscore/struts/chapter15/exercise2/outputTest.jsp" /> </action-mappings> <message-resources parameter="com.techscore.struts.Messages" /> <plug-in className="org.apache.struts.validator.ValidatorPlugIn"> <set-property property="pathnames" value="/WEB-INF/validator-rules.xml,/WEB-INF/orig-validator-rules.xml, /WEB-INF/validation.xml" /> </plug-in> </struts-config>
<?xml version="1.0" encoding="ISO_8859-1"?> <!DOCTYPE form-validation PUBLIC "-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.0//EN" "http://jakarta.apache.org/commons/dtds/validator_1_0.dtd"> <form-validation> <formset> <form name="/com/techscore/struts/chapter15/exercise2/OutputTest"> <field property="testString" depends="integer,even,maxlength"> <msg name="integer" key="testString.notInteger" /> <msg name="even" key="testString.notEven" /> <msg name="maxlength" key="testString.maxlengthError" /> <arg0 name="maxlength" key="${var:maxlength}" resource="false" /> <var> <var-name>maxlength</var-name> <var-value>3</var-value> </var> </field> <field property="testInt" depends="integer,even,minlength"> <msg name="integer" key="testInt.notInteger" /> <msg name="even" key="testInt.notEven" /> <msg name="minlength" key="testInt.minlengthError" /> <arg0 name="minlength" key="${var:minlength}" resource="false" /> <var> <var-name>minlength</var-name> <var-value>3</var-value> </var> </field> </form> </formset> </form-validation>
▼起動URLは以下の通り
WEB_ROOT/com/techscore/struts/chapter15/exercise2/InputTest.do
EncodingFilter.javaの参照(2章の実習課題2と同じ)
RuleCheckForm.javaの参照(13章の実習課題2と同じ)