步驟有點繁複，我這裡只整理簡單的步驟，詳細可以看參考文件
1. 下載 struts2 ，這裡我是下載 struts-2.2.1.1-all
2. 載入以下的 jar 檔， javassist-3.7.ga.jar 這個檔要到apps\struts2-blank-2.2.1\WEB-INF\lib 這裡找
2-1. commons-fileupload-1.2.1.jar
2-2. commons-io-1.3.2.jar
2-3. commons-logging-1.0.4.jar
2-4. freemarker-2.3.16.jar
2-5. ognl-3.0.jar
2-6. struts2-core-2.2.1.jar
2-7. xwork-2.2.1.jar
2-8. javassist-3.7.ga.jar
2. 建立 java
package com
import com.opensymphony.xwork2.ActionSupport;
@SuppressWarnings("serial")
public class LoginAction extends ActionSupport{
private String userName;
private String password;
public void setUserName(String name){
userName = name;
}
public void setPassword(String pwd){
password = pwd;
}
public String execute(){
if(userName.equals("gae") && password.equals("struts2")){
addActionMessage("Welcome," + userName);
return SUCCESS;
}
addActionError("Username and Password Combination doesnot match.");
return INPUT;
}
}
3. 配置 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" version="2.5">
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.FilterDispatcher
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>
4. 建立要使用的jsp檔案
如 login.jsp 和 home.jsp
login.jsp:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ 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=ISO-8859-1">
<title>Please login</title>
</head>
<body>
<s:actionerror/>
<s:form action="home" method="post">
<s:textfield name="username" label="UserName"></s:textfield>
<s:textfield name="password" label="Password"></s:textfield>
<s:submit name="login" value="login"></s:submit>
</s:form>
</body>
</html>
home.jsp:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ 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=ISO-8859-1">
<title>Home Page</title>
</head>
<body>
<s:actionmessage />
</body>
</html>
5. 在SRC 目錄下建立 structs.xml 大小寫不能變, 設定檔案的對應
如
<?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>
<include file="struts-default.xml"></include>
<package name="member" namespace="/member" extends="struts-default">
<action name="login">
<result>/login.jsp</result>
</action>
<action name="home" method="login" class="com.login.LoginAction">
<result>/home.jsp</result>
<result name="input">/login.jsp</result>
</action>
</package>
</struts>
6. 建立 ServletContextListener 避免錯誤
如下 命名為 OgnlListener , implements ServletContextListener
package com;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.http.HttpSessionAttributeListener;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
import ognl.OgnlRuntime;
public class OgnlListener implements ServletContextListener,
HttpSessionListener, HttpSessionAttributeListener {
public OgnlListener() {
}
public void contextInitialized(ServletContextEvent sce) {
OgnlRuntime.setSecurityManager(null);
}
public void contextDestroyed(ServletContextEvent arg0) {
// TODO Auto-generated method stub
}
public void sessionCreated(HttpSessionEvent arg0) {
// TODO Auto-generated method stub
}
public void sessionDestroyed(HttpSessionEvent arg0) {
// TODO Auto-generated method stub
}
public void attributeAdded(HttpSessionBindingEvent arg0) {
// TODO Auto-generated method stub
}
public void attributeRemoved(HttpSessionBindingEvent arg0) {
// TODO Auto-generated method stub
}
public void attributeReplaced(HttpSessionBindingEvent arg0) {
// TODO Auto-generated method stub
}
}
7. 將對應的 檔案加入 web.xml宣告中
<?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>
<include file="struts-default.xml"></include>
<package name="member" namespace="/member" extends="struts-default">
<action name="login">
<listener>
<listener-class>com.OgnlListener</listener-class>
</listener>
<result>/login.jsp</result>
</action>
</package>
</struts>
8. 建立 Package: freemarker.core, 並在下面建立 一個 TextBlock 的檔案 如下
https://docs.google.com/leaf?id=0B_JOf_Tyv_f6MzcwNDY5NTAtZTkwYS00OWUzLWJjN2ItNDhmNDNmYTg0NzQ4&hl=en
9. 完成執行GAE
參考文章：
Creating Struts2 application on Google App Engine (GAE)
在GAE中使用struts2框架
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