base.HelloWorld.java
- Java code
package base;import com.opensymphony.xwork2.ActionSupport;import java.lang.Exception;public class HelloWorld extends ActionSupport { public void validate(){ try{ if(getUsername().trim().equals("")||this.getUsername()==null){ System.out.println("validate"); this.addFieldError("username",getText("username")); } //if(getPassword()==null|| getPassword()=="")this.addFieldError("password",getText("password")); }catch(Exception e){ e.printStackTrace(); } } public String execute(){ forwardMessage = "success"; return forwardMessage; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } private String username; private String password; private String forwardMessage; }
interceptors.ExampleInterceptor
- Java code
package interceptors;import com.opensymphony.xwork2.ActionInvocation;import com.opensymphony.xwork2.interceptor.Interceptor;public class ExampleInterceptor implements Interceptor{ public void destroy() { System.out.println("destroy"); } public void init() { System.out.println("init"); } public String intercept(ActionInvocation invocate) throws Exception { System.out.println("dobefore"); invocate.invoke(); System.out.println("doAfter"); return "success"; } }struts.xml
- XML code
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"><struts> <include file="struts-default.xml" /> <package name="base" extends="struts-default"> <interceptors> <interceptor name="Example" class="interceptors.ExampleInterceptor"></interceptor> </interceptors> <action name="HelloWorld" class="base.HelloWorld" > <result name="success">/HelloWorld.jsp</result> <result name="input">/index.jsp</result> <interceptor-ref name="Example"></interceptor-ref> </action> </package></struts>
index.jsp
- HTML code
<%@ page language="java" contentType="text/html; charset=GBK" pageEncoding="GBK"%><%@ taglib prefix="s" uri="/struts-tags"%><!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=GBK"><title>say hello</title></head><body> <s:form action="HelloWorld" method="post"> <table> Say Hello to :<s:textfield name="username" /> <s:submit/> </table> </s:form></body></html>