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