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第一种DefaultAction什么都没有干
第二种实现了Action接口
第三种继承了ActionSupport类【常用】
目录结构
package com.Gary.web; public class DefaultAction { public String execute()
{
System.err.println("这是一个普通的action");
return null;
} }
DefaultAction.java
package com.Gary.web; import com.opensymphony.xwork2.Action; class ImplAction implements Action{ @Override
public String execute() throws Exception {
System.out.println("这是实现了Action接口的action");
return null;
} }
ImplAction.java
package com.Gary.web; import org.apache.struts2.ServletActionContext; import com.Gary.domain.User;
import com.Gary.service.UserService;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven; public class UserAction extends ActionSupport implements ModelDriven<User>{ public User user = new User(); public String execute() throws Exception { System.err.println("我已经运行了"); UserService userService = new UserService();
boolean success = userService.findUser(user);
if(success)
{
return "success";
}else{
ServletActionContext.getRequest().setAttribute("error", "用户名或密码错误!!!");
return "error";
} } @Override
public User getModel() {
// TODO Auto-generated method stub
return user;
}
}
UserAction.java
配置struts.xml
<struts>
<!-- name:配置包名 -->
<package name="MyPackage" namespace="/" extends="struts-default">
<action name="LoginAction" class="com.Gary.web.UserAction" method="execute">
<!-- 默认为转发 redirect设置为重定向-->
<result name="success" type="redirect">/index.html</result>
<result name="error">/login.jsp</result>
</action> <action name="LoginActionDefault" class="com.Gary.web.DefaultAction" method="execute">
</action> <action name="LoginActionImpl" class="com.Gary.web.ImplAction" method="execute"></action>
</package>
</struts>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
"http://struts.apache.org/dtds/struts-2.5.dtd"> <struts>
<!-- name:配置包名 -->
<package name="MyPackage" namespace="/" extends="struts-default">
<action name="LoginAction" class="com.Gary.web.UserAction" method="execute">
<!-- 默认为转发 redirect设置为重定向-->
<result name="success" type="redirect">/index.html</result>
<result name="error">/login.jsp</result>
</action> <action name="LoginActionDefault" class="com.Gary.web.DefaultAction" method="execute">
</action> <action name="LoginActionImpl" class="com.Gary.web.ImplAction" method="execute"></action>
</package>
</struts>
struts.xml