Struts2怎么自定义拦截器（Intercepor）

向右看齐 2024-04-18 14:16 11阅读 0赞

效果如下:  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNTc2MDI4_size_16_color_FFFFFF_t_70]

package Test;
    
    import com.opensymphony.xwork2.ActionInvocation;
    import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
    
    public class MyInterceptor extends AbstractInterceptor {
        
        @Override
        public String intercept(ActionInvocation actionInvocation) throws Exception {
        
            System.out.println("拦截器开始运行");
            long startTime=System.currentTimeMillis();
            System.out.println("开始时间为:"+startTime);
            String result=actionInvocation.invoke();
            long endTime=System.currentTimeMillis();
            System.out.println("结束时间为:"+endTime);
            System.out.println("程序执行花费了:"+(endTime-startTime)+"毫秒");
            return result;
        }
    
    
    }

package Test;
    
    import com.opensymphony.xwork2.ActionSupport;
    
    public class test extends ActionSupport {
        
        @Override
        public String execute() throws Exception {
        
            System.out.println("执行execute()方法");
            return super.execute();
        }
    }

不过此时系统可不认识我们自定义的拦截器，我们需要在struts.xml里面对拦截器进行配置，即要哪一个拦截器，拦截哪些Action

struts.xml:

<?xml version="1.0" encoding="UTF-8"?>
    
    <!DOCTYPE struts PUBLIC
            "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
            "http://struts.apache.org/dtds/struts-2.5.dtd">
    
    <struts>
        <package name="test" extends="struts-default" namespace="/">
            <interceptors>
                <interceptor name="myInterceptor" class="Test.MyInterceptor"></interceptor>
            </interceptors>
       
            <action name="my" class="Test.test">
                <result name="success">/index2.jsp</result>
                <interceptor-ref name="myInterceptor"></interceptor-ref>
            </action>
        </package>   
    </struts>

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNTc2MDI4_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/777bd8189fb14b83a8557d2e07712a10.png