Springmvc数据校验

 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:context="http://www.springframework.org/schema/context"
 5     xmlns:aop="http://www.springframework.org/schema/aop" 
 6     xmlns:tx="http://www.springframework.org/schema/tx" 
 7     xmlns:mvc="http://www.springframework.org/schema/mvc" 
 8      xsi:schemaLocation="
 9         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
10         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
11         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
12         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
13         http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
14         ">
15      
16    <!-- 配置包扫描器-->
17        <context:component-scan base-package="cn.happy.controller"></context:component-scan>
18        
19        <!-- 配置验证器 -->
20        <bean id="myvalidator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
21            <property name="providerClass" value="org.hibernate.validator.HibernateValidator"></property>
22        </bean> 
23        
24        <mvc:annotation-driven validator="myvalidator"/>
25 </beans>

 1 package cn.happy.entity;
 2 
 3 import javax.validation.constraints.Max;
 4 import javax.validation.constraints.Min;
 5 import javax.validation.constraints.Pattern;
 6 import javax.validation.constraints.Size;
 7 
 8 import org.hibernate.validator.constraints.NotEmpty;
 9 import org.jboss.logging.Message;
10 
11 import com.sun.istack.internal.NotNull;
12 
13 public class UserInfo {
14     
15      //必须是0到100之间
16     @Min(value=0,message="成绩最小值为{value}")
17     @Max(value=100,message="成绩最大值为{value}")
18     private Integer score;
19     
20    //手机号码必须不能为空,必须是以1 开头 第二位3,4,5,6,7,8,9   最后9位随意
21     @NotEmpty(message="手机号码不允许为空")  
22     @Pattern(regexp="^1[3,4,5,6,7,8,9]\\d{9}$",message="手机号码不正确")
23   private String phone;
24     
25     //不能为空
26     //必须是6个字符以上
27      @NotEmpty(message="用户名不能为空") 
28     @Size(min=6,message="名称至少6个字符")
29   private String name;
30   
31     public Integer getScore() {
32         return score;
33     }
34     public void setScore(Integer score) {
35         this.score = score;
36     }
37     public String getPhone() {
38         return phone;
39     }
40     public void setPhone(String phone) {
41         this.phone = phone;
42     }
43     public String getName() {
44         return name;
45     }
46     public void setName(String name) {
47         this.name = name;
48     }
49 }

 1 package cn.happy.controller;
 2 
 3 import javax.validation.Valid;
 4 
 5 import org.springframework.stereotype.Controller;
 6 import org.springframework.validation.BindingResult;
 7 import org.springframework.validation.FieldError;
 8 import org.springframework.web.bind.annotation.RequestMapping;
 9 import org.springframework.web.servlet.ModelAndView;
10 
11 import cn.happy.entity.UserInfo;
12 
13 @Controller
14 public class FirstController {
15     @RequestMapping("/first.do")
16     public ModelAndView doFirst(@Valid UserInfo info,BindingResult br){
17         ModelAndView mv=new ModelAndView();
18         mv.setViewName("/WELCOME.jsp");
19         //记录到底是哪个字段验证失败了
20         //有一个可以侦测到验证错误总数的方法
21         int errorCount = br.getErrorCount();
22         if (errorCount>0) {
23             //证明模型验证失败
24             FieldError score = br.getFieldError("score");
25             FieldError name = br.getFieldError("name");
26             FieldError phone = br.getFieldError("phone");
27             if (score!=null) {
28                 mv.addObject("scoremsg",score.getDefaultMessage());
29             }
30             
31             if (name!=null) {
32                 mv.addObject("namemsg",name.getDefaultMessage());
33             }
34             
35             if (phone!=null) {
36                 mv.addObject("phonemsg",phone.getDefaultMessage());
37             }
38             mv.setViewName("/index.jsp");
39         }
40         
41         //高中  英文版的吻别
42         return mv ;
43     }
44 }

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <display-name></display-name>    
  
  <!-- 编码过滤器 -->
  <filter>
    <filter-name>CharacterEncoding</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>utf-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>CharacterEncoding</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>


  <!-- 配置中央调度器 -->
  <servlet>
    <servlet-name>springmvc</servlet-name> 
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </init-param>
    <!-- TOmcat启动的时候，Servlet对象就存储到内存 正整数 -->
    <load-on-startup>1</load-on-startup>
  </servlet>
  
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
 
  
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>