用 execute()方法,validate()方法,ValidateXxx三种来说明一下stryts2数据校验
我们来看一下jsp页面(以注册为例)
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 String path = request.getContextPath(); 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 5 %> 6 <%@ taglib uri="/struts-tags" prefix="s" %> 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head> 10 <base href="<%=basePath%>"> 11 12 <title>My JSP 'regist.jsp' starting page</title> 13 14 15 </head> 16 17 <body> 18 <!-- 获取错误信息 --> 19 <s:fielderror></s:fielderror> 20 <s:form action="execute" method="post"> 21 <s:textfield name="user.username" label="用户名"></s:textfield> 22 <br/> 23 <s:textfield name="user.userpwd" label="密码"></s:textfield> 24 <br/> 25 <s:textfield name="okpwd" label="确认密码"></s:textfield> 26 <br/> 27 <s:submit value="注册"></s:submit> 28 </s:form> 29 </body> 30 </html>
1<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 String path = request.getContextPath(); 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 5 %> 6 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head> 10 <base href="<%=basePath%>"> 11 12 <title>My JSP 'success.jsp' starting page</title> 13 14 </head> 15 16 <body> 17 登录成功 <br/> 18 欢迎你${user.username}<br/> 19 等待数据加载>>> 20 </body> 21 </html>
用到的实体类
1 package cn.entity; 2 3 public class User { 4 private String username; 5 private String userpwd; 6 public String getUsername() { 7 return username; 8 } 9 public String getUserpwd() { 10 return userpwd; 11 } 12 public void setUsername(String username) { 13 this.username = username; 14 } 15 public void setUserpwd(String userpwd) { 16 this.userpwd = userpwd; 17 } 18 }
下面是三种实现struts2数据校验的方法:
execute()方法
1 package cn.action; 2 3 import cn.entity.User; 4 5 import com.opensymphony.xwork2.ActionSupport; 6 7 public class ExecuteAction extends ActionSupport{ 8 private User user; 9 private String okpwd; 10 11 @Override 12 public String execute() throws Exception{ 13 if(user.getUsername().length()==0){ 14 addFieldError("username", "用户名不能为空"); 15 } 16 if(user.getUserpwd().length()==0){ 17 addFieldError("userpwd", "密码不能为空"); 18 } 19 if(!user.getUserpwd().equals(okpwd)){ 20 addFieldError("userpwd", "两次密码必须一致"); 21 } 22 //捕获错误信息 返回input 23 if(this.hasFieldErrors()){ 24 return INPUT; 25 } 26 return SUCCESS; 27 } 28 public User getUser() { 29 return user; 30 } 31 public String getOkpwd() { 32 return okpwd; 33 } 34 public void setUser(User user) { 35 this.user = user; 36 } 37 public void setOkpwd(String okpwd) { 38 this.okpwd = okpwd; 39 } 40 }
validate()方法
public class ValidateAction extends ActionSupport{ private User user; private String okpwd; @Override public String execute() throws Exception{ return SUCCESS; } @Override public void validate(){ if(user.getUsername().length()==0){ addFieldError("username", "用户名不能为空"); } if(user.getUserpwd().length()==0){ addFieldError("userpwd", "密码不能为空"); } if(!user.getUserpwd().equals(okpwd)){ addFieldError("userpwd", "两次密码必须一致"); } } public User getUser() { return user; } public String getOkpwd() { return okpwd; } public void setUser(User user) { this.user = user; } public void setOkpwd(String okpwd) { this.okpwd = okpwd; } }
ValidateXxx()方法
1 package cn.action; 2 3 import cn.entity.User; 4 5 import com.opensymphony.xwork2.ActionSupport; 6 7 public class ValidateXxxAction extends ActionSupport{ 8 9 private User user; 10 private String okpwd; 11 12 public void validateRegist(){ 13 if(user.getUsername().length()<6){ 14 addFieldError("username", "用户长度不能小于6位"); 15 } 16 } 17 public String regist(){ 18 19 return SUCCESS; 20 } 21 22 @Override 23 public void validate(){ 24 if(user.getUsername().length()==0){ 25 addFieldError("username", "用户名不能为空"); 26 } 27 if(user.getUserpwd().length()==0){ 28 addFieldError("userpwd", "密码不能为空"); 29 } 30 if(!user.getUserpwd().equals(okpwd)){ 31 addFieldError("userpwd", "两次密码必须一致"); 32 } 33 34 } 35 public User getUser() { 36 return user; 37 } 38 public String getOkpwd() { 39 return okpwd; 40 } 41 public void setUser(User user) { 42 this.user = user; 43 } 44 public void setOkpwd(String okpwd) { 45 this.okpwd = okpwd; 46 } 47 }
接下来是编写配置文件
1 <?xml version="1.0" encoding="UTF-8" ?> 2 <!DOCTYPE struts PUBLIC 3 "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" 4 "http://struts.apache.org/dtds/struts-2.3.dtd"> 5 <struts> 6 <constant name="struts.devMode" value="true"></constant> 7 <package name="default" namespace="/" extends="struts-default" > 8 <!-- 测试validate方法 --> 9 <action name="execute" class="cn.action.ExecuteAction"> 10 <result name="success">/success.jsp</result> 11 <result name="input">/regist.jsp</result> 12 </action> 13 <!-- 测试Validate方法 --> 14 <action name="Validate" class="cn.action.ValidateAction"> 15 <result name="success">/success.jsp</result> 16 <result name="input">/regist.jsp</result> 17 </action> 18 <!-- validateXx方法 --> 19 <action name="validateXxx" class="cn.action.ValidateXxxAction" method="regist"> 20 <result name="success">/success.jsp</result> 21 <result name="input">/regist.jsp</result> 22 </action> 23 24 25 </package> 26 </struts>
用到的架包
效果展示:
execute()
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validate()方法
此结果与execute()方法结果相同
ValidateXxx()方法
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