第一次写博客,也不知道怎么写,先把代码贴上吧!
简单的登陆校验
拦截器核心代码:PermissionInterceptor.java
package interceptor;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.Interceptor;
public class PermissionInterceptor implements Interceptor {
@Override
public void destroy() {
// TODO Auto-generated method stub
}
@Override
public void init() {
}
@Override
public String intercept(ActionInvocation invocation) throws Exception {
Object user = ActionContext.getContext().getSession().get("user");
if (user != null) {
String s = invocation.invoke();//继续执行
return s; //如果user不为null,代表用户已经登录,允许执行action中的方法
}
ActionContext.getContext().put("message", "你没有权限执行该操作");
return "success";
}
}
拦截器配置文件:struts.xml:
<?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>
<package name="chao" extends="struts-default">
<interceptors>
<interceptor name="permission" class="interceptor.PermissionInterceptor" /><!-- 加入自定义拦截器 -->
<interceptor-stack name="permissionStack">
<interceptor-ref name="defaultStack" />
<interceptor-ref name="permission" /><!--注意 ///// -->
</interceptor-stack>
</interceptors>
<!-- <default-interceptor-ref name="permissionStack" /> --><!-- //定义是否对所有action拦截有效 -->
<global-results>
<result name="success">/WEB-INF/page/bing.jsp</result>
</global-results>
<action name="hello_*" class="chao.HelloWorldAction" method="{1}">
<result>/WEB-INF/page/hello.jsp</result>
</action>
<action name="bing_*" class="chao.UserAction" method="{1}">
<interceptor-ref name="permissionStack" /><!--注意 加入拦截栈 ///// -->
</action>
</package>
</struts>
模拟登陆操作:login.jsp:
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!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=utf-8">
<title>Insert title here</title>
</head>
<body>
<%
request.getSession().setAttribute("user", "chao");
%>
ok user已经登录。。。。。。。
</body>
</html>
模拟退出登录,quit.jsp:<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!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=utf-8">
<title>Insert title here</title>
</head>
<body>
<%
request.getSession().removeAttribute("user");
%>
onnnnnnnnn user退出登录。。。。。。
</body>
</html>
action文件:UserAction.java:
package chao;
public class UserAction{
private String message;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public String addUI() {
this.message = "addUi";
return "success";
}
public String execute() {
this.message = "execute";
return "success";
}
}
就这样吧,另外获取session对象内容方法:赋值方法:
ActionContext.getContext().getSession().put("username","chaoyongbing");
request,application一样
为action属性赋值:
<action name="xxx">
<param name="msg1">chaoyongbing</param>
<result>/hello.jsp</result> 默认返回success时执行
</action>
修改后缀:
<constant name="struts.action.extension" value="bing,action" />
动态调用加“!” eg:类名!方法名