ssm关于校验问题

• jar包

• springmvc.xml中配置

<mvc:annotation-driven conversion-service="conversionService"validator="validator"></mvc:annotation-driven> <!-- 校验器 -->   <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">     <!-- Hibernate校验器 -->     <property name="providerClass" value="org.hibernate.validator.HibernateValidator"/>     <!-- 指定校验使用的资源文件，在文件中配置校验错误信息，如果不指定     则默认使用classpath下的ValidationMessages.properties -->     <property name="validationMessageSource" ref="messageSource"/>   </bean>   <!--校验错误信息配置文件  -->  <bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">  <!-- 资源文件名 -->  <property name="basenames">    <list>      <value>classpath:CustomValidationMessages</value>    </list>  </property>    <!-- 资源文件编码格式 -->   <property name="fileEncodings" value="utf-8"/>   <!-- 对资源文件内容缓存时间。单位：秒 -->   <property name="cacheSeconds" value="120"/>  </bean>

• 实体类中：

public class User {    /**     * This field was generated by MyBatis Generator.     * This field corresponds to the database column user.userId     *     * @mbggenerated Mon May 01 16:37:08 CST 2017     */    private Integer userid;    /**     * This field was generated by MyBatis Generator.     * This field corresponds to the database column user.username     *     * @mbggenerated Mon May 01 16:37:08 CST 2017     */    @Size(min=1,max=30,message="{user.name.length.error}")    private String username;}

校验错误信息配置文件CustomValidationMessages.properties：

• Controller中：

    @RequestMapping("/buy")    public ModelAndView buy(Model model,int goodsid,int quantity,HttpSession session,@Validated User user,BindingResult bindingResult)throws Exception    {    //获取校验错误信息        if (bindingResult.hasErrors()) {            //输出错误信息            List<ObjectError> allErrors=bindingResult.getAllErrors();            for (ObjectError objectError : allErrors) {                //输出错误信息                System.out.println(objectError.getDefaultMessage());            }            //将错误信息传到页面             model.addAttribute("allErrors", allErrors);        }

---

校验分组

  //group:此校验属于哪个分组，groups可以定义多个分组    @Size(min=1,max=30,message="{user.name.length.error}",groups={ValidGroup1.class})    private String username;

//@Validated(value={ValidGroup1.class})指定使用ValidGroup1分组的校验  @RequestMapping("/buy")    public ModelAndView buy(Model model,int goodsid,int quantity,HttpSession session,@Validated(value={ValidGroup1.class}) User user,BindingResult bindingResult)throws Exception    {