Struts2---自定义拦截器

整体架构：

一：UserIfo

public class UserInfo {    private String username;    private String password;    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }}

二：LoginAction

public class LoginAction implements Action {    private UserInfo user;    public String execute() throws Exception {        Map<String, Object> session = ActionContext.getContext().getSession();        if (user != null) {            if (user.getUsername().equals("1") && user.getUsername().equals("1")) {                session.put("uname", user.getUsername());                return SUCCESS;            } else {                return LOGIN;            }        } else {            if (session != null && session.get("uname") != null) {                return "success";            } else {                System.out.println("自定义代码");                return "login";            }        }    }    public UserInfo getUser() {        return user;    }    public void setUser(UserInfo user) {        this.user = user;    }}

三：BookAction

public class BookAction implements Action {    public String execute() throws Exception {        System.out.println("bookaction");        return SUCCESS;    }}

四：MyInterceptor

public class MyInterceptor implements Interceptor {    public void destroy() {    }    public void init() {        System.out.println("拦截器已经成功初始化.....");    }    public String intercept(ActionInvocation invocation) throws Exception {        System.out.println("对象" + invocation);        Object action = invocation.getAction();        System.out.println("action===========" + action);        String value;        Map<String, Object> session = ActionContext.getContext().getSession();        Object name = session.get("uname");        String actionName = invocation.getProxy().getActionName();        invocation.getProxy().getNamespace();        System.out.println("actionNmae=============" + actionName);        if (actionName.equals("login")) {            System.out.println("================");            value = invocation.invoke();        } else if (name != null) {            value = invocation.invoke();            String method = invocation.getProxy().getMethod();            System.out.println("方法名=========" + method);        } else {            value = "login";        }        System.out.println("逻辑视图名====" + value);        return value;    }}

五：struts-day07-02.xml

<struts>    <constant name="struts.devMode" value="true"></constant>    <package name="day07" namespace="/" extends="default">        <action name="login" class="cn.day07interceptor02.action.LoginAction">            <result name="success">/WEB-INF/myinter/success.jsp</result>            <result name="login">/WEB-INF/myinter/login.jsp</result>        </action>        <action name="book" class="cn.day07interceptor02.action.BookAction">            <result name="success">/WEB-INF/myinter/booksuccess.jsp</result>        </action>    </package></struts>


六：struts.ml
<struts>    <constant name="struts.devMode" value="true"></constant>    <package name="day07" namespace="/" extends="default">        <action name="login" class="cn.day07interceptor02.action.LoginAction">            <result name="success">/WEB-INF/myinter/success.jsp</result>            <result name="login">/WEB-INF/myinter/login.jsp</result>        </action>        <action name="book" class="cn.day07interceptor02.action.BookAction">            <result name="success">/WEB-INF/myinter/booksuccess.jsp</result>        </action>    </package></struts><struts>    <!--支持动态方法调用-->    <constant name="struts.enable.DynamicMethodInvocation" value="false"/>    <!--修改struts.xml 不用重启容器-->    <constant name="struts.devMode" value="true"/>    <package name="default" namespace="/" extends="struts-default">        <interceptors>            <interceptor name="myInter" class="cn.happy.day07interceptor.interceptor.MyInterceptor"></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>        <default-action-ref name="first"></default-action-ref>        <action name="first"></action>        <!--<global-results>            <result name="error">/WEB-INF/jsp/error.jsp</result>        </global-results>-->        <!-- <global-exception-mappings>             <exception-mapping exception="java.lang.Exception" result="error"></exception-mapping>         </global-exception-mappings>-->        <action name="helloWord" class="cn.day01.action.TestAction01">            <result name="success">day01jsp/first.jsp</result>        </action>    </package>    <!--<include file="struts-day03.xml"></include>    <include file="struts-day05.xml"></include>    <include file="struts-day06.xml"></include>    <include file="struts-day04.xml"></include>    <include file="struts-day07.xml"></include>    <include file="struts-day08.xml"></include>-->    <include file="struts-day07-02.xml"></include></struts>
七：login.jsp
<body><h2>登录</h2><s:form method="POST" action="login">    请输入用户名： <s:textfield  name="user.username"></s:textfield> <br/>    <s:textfield name="user.password"></s:textfield><br/>    <s:submit value="登陆"></s:submit></s:form></body>

八：执行
访问页面，localhost:8080/login

输入1.1

在次输入login地址
直接
输入book
同上