Struts之采用注解的方式来完成对数据的校验

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通过在action对象当中对应的set方法上方进行注解的添加操作来实现对来自表单对象当中的数据的校验操作

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><%@ taglib uri="/struts-tags" prefix="s" %><%@ taglib uri="/struts-dojo-tags" prefix="sx" %>    <!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=UTF-8"><title>登录界面</title><sx:head/></head><body><s:form action="LoginAction" method="post" ><s:textfield name="username" label="用户名"/><s:textfield name="age" label="年龄"/><s:textfield name="birthday" label="出生日期"/><s:password name="password" label="密码"/><s:submit value="提交"/></s:form></body></html>

action类:

public class LoginAction extends ActionSupport {private String username;private String password;private int age;private Date birthday;public String getUsername() {return username;}/** 采用注解的方式来对action类当中所指定的属性值进行输入校验操作,type属性值当中所名了是对字段数据进行校验操作 **/@RequiredStringValidator(type = ValidatorType.FIELD, key = "username.requried", message = "用户名不能为空")/** * 采用注解来建立一个正则表达式类型的校验器，在key值当中设定username.regex则表明了对username字段属性对象进行 * 正则表达式校验操作 **/@RegexFieldValidator(type = ValidatorType.FIELD, key = "username.regex", regexExpression = "\\w{4,25}", message = "用户名必须为字母或数字，且长度为4-25之间")public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}@RequiredStringValidator(type = ValidatorType.FIELD, key = "password.requried", message = "密码为必填字段")@RegexFieldValidator(type = ValidatorType.FIELD, key = "password.regex", regexExpression = "\\w{4,25}", message = "密码的长度必须在4-25位之间，且必须为字母或数字")public void setPassword(String password) {this.password = password;}/** 建立一个整形类型范围的字段校验器对象来进行数据的校验操作 **/@IntRangeFieldValidator(message = "所输入的年龄的范围必须在1-150之间为有效值", key = "age.range", min = "1", max = "150")public int getAge() {return age;}public void setAge(int age) {this.age = age;}public Date getBirthday() {return birthday;}@DateRangeFieldValidator(message = "日期的范围为1900-01-01---2050-12-31", key = "birthday.range", min = "1900-01-01", max = "2050-12-31")@RequiredFieldValidator(type=ValidatorType.FIELD,message="出生日期为必填的字段",key="birthday.requried")public void setBirthday(Date birthday) {this.birthday = birthday;}@Overridepublic String execute() throws Exception {System.out.println("执行execute方法");return super.execute();}}

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