SpringMVC之声明式校验

1、在http://www.cnblogs.com/wtzl/p/8830678.html编程式校验基础上

2.新增jar包三个

3.StudentModel.java（声明式）

 package 声明式校验;

 import javax.validation.constraints.NotNull;

 import org.hibernate.validator.constraints.Email;

 import org.hibernate.validator.constraints.Length;

 import org.hibernate.validator.constraints.Range;

 public class StudentModel {

     @NotNull(message="name不能为空")

     @Length(min=6,max=10,message="长度是6~10个字符")

     private String name;

     @Range(min=10,max=40,message="age在10~40之间")

     private int age;

     @Email(message="邮箱地址不正确")

     private String email;

     public String getName() {

         return name;

     }

     public void setName(String name) {

         this.name = name;

     }

     public int getAge() {

         return age;

     }

     public void setAge(int age) {

         this.age = age;

     }

     public String getEmail() {

         return email;

     }

     public void setEmail(String email) {

         this.email = email;

     }

 }

4.ValidationAnnotationController .java(控制器简化)

 package 声明式校验;

 import javax.validation.Valid;

 import org.springframework.stereotype.Controller;

 import org.springframework.validation.Errors;

 import org.springframework.web.bind.annotation.RequestMapping;

 @Controller

 public class ValidationAnnotationController {

     @RequestMapping("stu.html")

     public String validStudent(@Valid StudentModel student,Errors errors){

         if(errors.hasErrors()){

             return "error2";

         }

         return "result";

     }

 }

5.springmvc-servlet.xml（新增两条属性）

 <?xml version="1.0" encoding="UTF-8"?>

 <beans xmlns="http://www.springframework.org/schema/beans"

     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

     xmlns:mvc="http://www.springframework.org/schema/mvc"

     xmlns:p="http://www.springframework.org/schema/p"

     xmlns:context="http://www.springframework.org/schema/context"

     xsi:schemaLocation="

         http://www.springframework.org/schema/beans

         http://www.springframework.org/schema/beans/spring-beans.xsd

         http://www.springframework.org/schema/context

         http://www.springframework.org/schema/context/spring-context.xsd

         http://www.springframework.org/schema/mvc

         http://www.springframework.org/schema/mvc/spring-mvc.xsd">

         <!-- 注解扫描 -->

     <context:component-scan base-package="com.wt.entity"/>

      <context:component-scan base-package="声明式校验"/>

      <mvc:annotation-driven></mvc:annotation-driven>

     <!-- 完成视图的对应 -->

     <!-- 对转向页面的路径解析。prefix：前缀， suffix：后缀 -->

     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" >

         <property name="prefix" value="/WEB-INF/jsp/example1/"/>

         <property name="suffix" value=".jsp"/>

     </bean>

 </beans>

6.jsp文件一样

7.测试效果