Struts2 自定义拦截器

package cn.gh.interceptor.myinter;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.Interceptor;

import java.util.Map;

/**
* Created by guo on 2017/10/25.
*/
public class myinterseptor implements Interceptor {
public void destroy() {

}

public void init() {
System.out.println("自定义拦截器已启动--------");
}

public String intercept(ActionInvocation actionInvocation) throws Exception {
System.out.println("对象"+actionInvocation);
Object action = actionInvocation.getAction();
System.out.println("action是:======="+action);
String value;
//判定Session里的值是否存在
Map<String, Object> session = ActionContext.getContext().getSession();
Object uname = session.get("uname");
String actionName = actionInvocation.getProxy().getActionName();
actionInvocation.getProxy().getNamespace();//user
System.out.println("actionName========"+actionName);
if("login".equals(actionName)){
System.out.println("actionName是login==============");
value=actionInvocation.invoke();
}else if(uname!=null){
value=actionInvocation.invoke();
String method = actionInvocation.getProxy().getMethod();
System.out.println("已经登陆，执行的方法是"+method);
}else {
value="login";
}
return value;
}
}

package cn.gh.interceptor.action;

import cn.gh.entity.User;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ModelDriven;
import com.opensymphony.xwork2.util.ValueStack;

import java.util.Map;

public class UserAction implements Action, ModelDriven {

private User user;

public User getUser() {
return user;
}

public void setUser(User user) {
this.user = user;
}

public String execute() throws Exception {
Map<String, Object> session = ActionContext.getC
4000
ontext().getSession();
if (user!=null) {
if (user.getUsername().equals("1")&&user.getPassword().equals("1")) {
//省略一个步骤,记录session
session.put("uname",user.getUsername());
return SUCCESS;
}else {
return LOGIN;
}
}else {//不是从页面过来的
if (session!=null&&session.get("uname")!=null) {
return "success";
}else {
System.out.println("Action中的自定义代码");
return "login";

}
}
}

public User getModel() {
return user;
}
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<constant name="struts.devMode" value="true"></constant>

<package name="default" namespace="/" extends="struts-default">
<interceptors>
<interceptor name="myinter" class="cn.gh.interceptor.myinter.myinterseptor"></interceptor>
<interceptor-stack name="mystack">
<interceptor-ref name="defaultStack"></interceptor-ref>
<interceptor-ref name="myinter"></interceptor-ref>
</interceptor-stack>
</interceptors>
<default-interceptor-ref name="mystack"></default-interceptor-ref>
<global-results>
<result name="login">/login.jsp</result>
</global-results>
<!--  <action name="userAction" class="cn.gh.action.UserAction">
<result name="success">/success.jsp</result>
</action>-->
</package>
<!-- <include file="struts-02.xml"></include>
<include file="struts-03.xml"></include>
<include file="struts-04.xml"></include>
<include file="struts-05.xml"></include>-->
<include file="struts-06.xml"></include>

</struts>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<constant name="struts.devMode" value="true"></constant>

<package name="action06" namespace="/" extends="default">

<action name="success" class="cn.gh.interceptor.action.SuccessAction">
<result name="success">/success.jsp</result>
</action>
<action name="login" class="cn.gh.interceptor.action.UserAction">
<result name="success">/success.jsp</result>
<result name="login">/login.jsp</result>
</action>

</package>
</struts>