1、在http://www.cnblogs.com/wtzl/p/8830678.html編程式校驗基礎上

2.新增jar包三個

3.StudentModel.java（聲明式）

 1 package 聲明式校驗;
 2 
 3 import javax.validation.constraints.NotNull;
 4 
 5 import org.hibernate.validator.constraints.Email;
 6 import org.hibernate.validator.constraints.Length;
 7 import org.hibernate.validator.constraints.Range;
 
 8 
 9 public class StudentModel {
10     @NotNull(message="name不能為空")
11     @Length(min=6,max=10,message="長度是6~10個字符")
12     private String name;
13     @Range(min=10,max=40,message="age在10~40之間")
14     private int age;
15     @Email(message="郵箱地址不正確")
16     private String email;
17     public String getName() {
 
18         return name;
19     }
20     public void setName(String name) {
21         this.name = name;
22     }
23     public int getAge() {
24         return age;
25     }
26     public void setAge(int age) {
27         this.age = age;
28     }
29     public String getEmail() {
30         return email;
 
31     }
32     public void setEmail(String email) {
33         this.email = email;
34     }
35     
36     
37 }

4.ValidationAnnotationController .java(控制器簡化)

 1 package 聲明式校驗;
 2 
 3 import javax.validation.Valid;
 4 
 5 import org.springframework.stereotype.Controller;
 6 import org.springframework.validation.Errors;
 7 import org.springframework.web.bind.annotation.RequestMapping;
 8 
 9 @Controller
10 public class ValidationAnnotationController {
11     @RequestMapping("stu.html")
12     public String validStudent(@Valid StudentModel student,Errors errors){
13         if(errors.hasErrors()){
14             return "error2";
15         }
16         return "result";
17     }
18 }

5.springmvc-servlet.xml（新增兩條屬性）

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4     xmlns:mvc="http://www.springframework.org/schema/mvc"
 5     xmlns:p="http://www.springframework.org/schema/p"
 6     xmlns:context="http://www.springframework.org/schema/context"
 7     xsi:schemaLocation="
 8         http://www.springframework.org/schema/beans
 9         http://www.springframework.org/schema/beans/spring-beans.xsd
10         http://www.springframework.org/schema/context
11         http://www.springframework.org/schema/context/spring-context.xsd
12         http://www.springframework.org/schema/mvc
13         http://www.springframework.org/schema/mvc/spring-mvc.xsd">
14         <!-- 註解掃描 -->
15     <context:component-scan base-package="com.wt.entity"/>
16     
17      <context:component-scan base-package="聲明式校驗"/>
18      <mvc:annotation-driven></mvc:annotation-driven>
19      
20      
21     <!-- 完成視圖的對應 -->
22     <!-- 對轉向頁面的路徑解析。prefix：前綴， suffix：後綴 -->
23     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" >
24         <property name="prefix" value="/WEB-INF/jsp/example1/"/>
25         <property name="suffix" value=".jsp"/>
26     </bean>
27 
28 </beans>

6.jsp文件一樣

7.測試效果

SpringMVC之聲明式校驗