src:
struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.enable.DynamicMethodInvocation" value="true" />
</struts>
src\chap09:
CheckAction.java
package chap09;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.apache.struts2.config.Result;
import org.apache.struts2.interceptor.ServletRequestAware;
@Result("/result.jsp")
public class CheckAction implements ServletRequestAware{
private String name;
private String age;
private String sex;
private HttpServletRequest request;
public String checkPersonalInfo() {
String new_name;
if( "male".equals( sex ) == true ){
new_name = "Mr." + name;
}else{
new_name = "Ms." + name;
}
// 新しい(Mr./Ms.がついた)名前をAttributeで追加
request.setAttribute( "new_name", new_name );
// HttpSessionの作成
HttpSession session = request.getSession( true );
session.setAttribute( "prev_name", name );
return "success";
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public void setServletRequest(HttpServletRequest request) {
this.request = request;
}
}WebContent:
index.jsp
<%@ page language="java" contentType="text/html; charset=windows-31j"
pageEncoding="windows-31j"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-31j">
<title></title>
</head>
<body>
<%
String prev_name;
if( session != null ){
prev_name = (String)session.getAttribute( "prev_name" );
if( prev_name != null ){
%>
<font color="red">
以前、あなたはアクセスしたことがあります<br>
</font>
お久しぶりです <%= prev_name %> さん<br>
<%
}
}
%>
<br>
名前、性別、年齢を入力してください。<br>
<br>
<s:form action="check" method="post">
<s:textfield key="name" label="氏名" /> <br>
<s:radio list="#{'male':'男性','female':'女性'}" name="sex" label="性別"/><br>
<s:textfield key="age" label="年齢"/> <br>
<s:submit value="submit" method="checkPersonalInfo" />
</s:form>
</body>
</html>
result.jsp
<%@ page language="java" contentType="text/html; charset=windows-31j"
pageEncoding="windows-31j"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-31j">
<title></title>
</head>
<body>
あなたは、 <br>
氏名: <%= request.getParameter( "name" ) %> <br>
<%
String sex_string;
if( "male".equals( request.getParameter( "sex" ) ) ){
sex_string = "男性";
}else{
sex_string = "女性";
}
int age = Integer.parseInt(request.getParameter( "age" ));
String drink;
if( age >= 20 ){
drink = "あなたはお酒が飲めますね。";
}else{
drink = "あなたはお酒を飲んではいけません。";
}
%>
性別: <%= sex_string %> <br>
年齢: <%= request.getParameter( "age" ) %>歳<br>
<br>
こんにちは <%= (String)request.getAttribute( "new_name" ) %> さん<br>
<br>
<%= drink %> <br>
<a href="/Chap09/index.jsp">トップ</a>へ戻る。
</body>
</html>
WebContent\WEB-INF:
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>Chap09</display-name>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
<init-param>
<param-name>actionPackages</param-name>
<param-value>
chap09
</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
WebContent\WEB-INF\lib:
commons-logging-1.0.4.jar
freemarker-2.3.8.jar
ognl-2.6.11.jar
struts2-core-2.0.11.2.jar
xwork-2.0.5.jar
代碼來自日本的技術圖書 ：http://www.shuwasystem.co.jp/products/7980html/2197.html