Struts2---自定义拦截器

一：UserIfo

1.  
   public class UserInfo {
2.  
   private String username;
3.  
   private String password;
4.  
    
5.  
   public String getUsername() {
6.  
   return username;
7.  
   }
8.  
    
9.  
   public void setUsername(String username) {
10.  
    this.username = username;
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    }
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13.  
    public String getPassword() {
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    return password;
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    }
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17.  
    public void setPassword(String password) {
18.  
    this.password = password;
19.  
    }
20.  
    }

 

 

二：LoginAction

 

1.  
   public class LoginAction implements Action {
2.  
   private UserInfo user;
3.  
    
4.  
   public String execute() throws Exception {
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   Map<String, Object> session = ActionContext.getContext().getSession();
6.  
   if (user != null) {
7.  
   if (user.getUsername().equals("1") && user.getUsername().equals("1")) {
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   session.put("uname", user.getUsername());
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   return SUCCESS;
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    } else {
11.  
    return LOGIN;
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    }
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    } else {
14.  
    if (session != null && session.get("uname") != null) {
15.  
    return "success";
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    } else {
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    System.out.println("自定义代码");
18.  
    return "login";
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    }
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    }
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    }
22.  
     
23.  
     
24.  
    public UserInfo getUser() {
25.  
    return user;
26.  
    }
27.  
     
28.  
    public void setUser(UserInfo user) {
29.  
    this.user = user;
30.  
    }
31.  
    }
32.  
     

三：BookAction

 

 

1.  
   public class BookAction implements Action {
2.  
   public String execute() throws Exception {
3.  
   System.out.println("bookaction");
4.  
   return SUCCESS;
5.  
   }
6.  
   }
7.  
    

四：MyInterceptor

1.  
   public class MyInterceptor implements Interceptor {
2.  
   public void destroy() {
3.  
    
4.  
   }
5.  
    
6.  
   public void init() {
7.  
   System.out.println("拦截器已经成功初始化.....");
8.  
   }
9.  
    
10.  
    public String intercept(ActionInvocation invocation) throws Exception {
11.  
    System.out.println("对象" + invocation);
12.  
    Object action = invocation.getAction();
13.  
    System.out.println("action===========" + action);
14.  
    String value;
15.  
    Map<String, Object> session = ActionContext.getContext().getSession();
16.  
    Object name = session.get("uname");
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    String actionName = invocation.getProxy().getActionName();
18.  
    invocation.getProxy().getNamespace();
19.  
    System.out.println("actionNmae=============" + actionName);
20.  
    if (actionName.equals("login")) {
21.  
    System.out.println("================");
22.  
    value = invocation.invoke();
23.  
    } else if (name != null) {
24.  
    value = invocation.invoke();
25.  
    String method = invocation.getProxy().getMethod();
26.  
    System.out.println("方法名=========" + method);
27.  
    } else {
28.  
    value = "login";
29.  
    }
30.  
    System.out.println("逻辑视图名====" + value);
31.  
    return value;
32.  
    }
33.  
    }
34.  
     

五：struts-day07-02.xml

1.  
   <struts>
2.  
   <constant name="struts.devMode" value="true"></constant>
3.  
   <package name="day07" namespace="/" extends="default">
4.  
   <action name="login" class="cn.day07interceptor02.action.LoginAction">
5.  
   <result name="success">/WEB-INF/myinter/success.jsp</result>
6.  
   <result name="login">/WEB-INF/myinter/login.jsp</result>
7.  
   </action>
8.  
   <action name="book" class="cn.day07interceptor02.action.BookAction">
9.  
   <result name="success">/WEB-INF/myinter/booksuccess.jsp</result>
10.  
    </action>
11.  
    </package>
12.  
    </struts>

 

 

六：struts.ml

 

1.  
   <struts>
2.  
   <constant name="struts.devMode" value="true"></constant>
3.  
   <package name="day07" namespace="/" extends="default">
4.  
   <action name="login" class="cn.day07interceptor02.action.LoginAction">
5.  
   <result name="success">/WEB-INF/myinter/success.jsp</result>
6.  
   <result name="login">/WEB-INF/myinter/login.jsp</result>
7.  
   </action>
8.  
   <action name="book" class="cn.day07interceptor02.action.BookAction">
9.  
   <result name="success">/WEB-INF/myinter/booksuccess.jsp</result>
10.  
    </action>
11.  
    </package>
12.  
    </struts>
13.  
    <struts>
14.  
    <!--支持动态方法调用-->
15.  
    <constant name="struts.enable.DynamicMethodInvocation" value="false"/>
16.  
    <!--修改struts.xml 不用重启容器-->
17.  
    <constant name="struts.devMode" value="true"/>
18.  
    <package name="default" namespace="/" extends="struts-default">
19.  
    <interceptors>
20.  
    <interceptor name="myInter" class="cn.happy.day07interceptor.interceptor.MyInterceptor"></interceptor>
21.  
    <interceptor-stack name="myStack">
22.  
    <interceptor-ref name="defaultStack"></interceptor-ref>
23.  
    <interceptor-ref name="myInter"></interceptor-ref>
24.  
    </interceptor-stack>
25.  
    </interceptors>
26.  
    <default-interceptor-ref name="myStack"></default-interceptor-ref>
27.  
    <default-action-ref name="first"></default-action-ref>
28.  
    <action name="first"></action>
29.  
    <!--<global-results>
30.  
    <result name="error">/WEB-INF/jsp/error.jsp</result>
31.  
    </global-results>-->
32.  
    <!-- <global-exception-mappings>
33.  
    <exception-mapping exception="java.lang.Exception" result="error"></exception-mapping>
34.  
    </global-exception-mappings>-->
35.  
    <action name="helloWord" class="cn.day01.action.TestAction01">
36.  
    <result name="success">day01jsp/first.jsp</result>
37.  
    </action>
38.  
    </package>
39.  
    <!--<include file="struts-day03.xml"></include>
40.  
    <include file="struts-day05.xml"></include>
41.  
    <include file="struts-day06.xml"></include>
42.  
    <include file="struts-day04.xml"></include>
43.  
    <include file="struts-day07.xml"></include>
44.  
    <include file="struts-day08.xml"></include>-->
45.  
    <include file="struts-day07-02.xml"></include>
46.  
    </struts>

七：login.jsp

 

 

1.  
   <body>
2.  
   <h2>登录</h2>
3.  
   <s:form method="POST" action="login">
4.  
   请输入用户名： <s:textfield name="user.username"></s:textfield> <br/>
5.  
   <s:textfield name="user.password"></s:textfield><br/>
6.  
   <s:submit value="登陆"></s:submit>
7.  
   </s:form>
8.