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