1. 請先參考AppEngine整合Spring+JPA
2. 本範例是用Struts2.1.8, 建議是用一樣的版本, 比較不會有問題,下載之後把下面這些JAR檔, 放到Lib裡
- commons-fileupload-1.2.1.jar
- commons-io-1.3.2.jar
- freemarker-2.3.15.jar
- ognl-2.7.3.jar
- struts2-core-2.1.8.1.jar
- struts2-spring-plugin-2.1.8.1.jar
- xwork-core-2.1.6.jar
STEP 2.因為GAE安全的設定比較嚴謹, 所以必須修改安全設定, 這裡是依照官網的討論用Listener的方式去修改
gae.InitListener
package gae;
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 InitListener implements ServletContextListener, HttpSessionListener, HttpSessionAttributeListener {
public void contextInitialized(ServletContextEvent arg0) {
OgnlRuntime.setSecurityManager(null);
}
public void contextDestroyed(ServletContextEvent arg0) {}
public void sessionCreated(HttpSessionEvent arg0) {}
public void sessionDestroyed(HttpSessionEvent arg0) {}
public void attributeAdded(HttpSessionBindingEvent arg0) {}
public void attributeRemoved(HttpSessionBindingEvent arg0) {}
public void attributeReplaced(HttpSessionBindingEvent arg0) {}
}
STEP 3. 修改 Action 及相關的設定
1. 修改 Action: fattom.riddle.TestAction
package fattom.riddle;
import java.util.List;
import fattom.riddle.dao.UserDao;
import fattom.riddle.entity.User;
public class TestAction{
private UserDao userDao;
private String name;
private String action;
private List users;
public String execute() throws Exception {
if (name != null) {
User tmpUser = new User();
tmpUser.setName(name);
userDao.persist(tmpUser);
}
users = userDao.findAll();
if (action != null && "delete".equals(action)) {
for (Object user : users) {
userDao.remove((User)user);
}
}
return "success";
}
public void setUserDao(UserDao userDao) {this.userDao = userDao;}
public void setName(String name) {this.name = name;}
public void setAction(String action) {this.action = action;}
public List getUsers() {return users;}
}
2. 新增struts設定檔: 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="false" />
<constant name="struts.devMode" value="false" />
<package name="default" namespace="/" extends="struts-default">
<action name="test" class="fattom.riddle.TestAction" method="execute">
<result name="success">/WEB-INF/success.jsp</result>
</action>
</package>
</struts>
3. 新增Action回應的VIEW: /WEB-INF/success.jsp
<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<title>Hello App Engine</title>
</head>
<body>
<s:iterator value="users">
<s:property value="id"/>/<s:property value="name"/><br>
</s:iterator>
</body>
</html>
4. 修改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">
<listener>
<listener-class>gae.InitListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</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>
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