详解SpringMVC的类型转换及验证方法

package com.spring.mvc.controller;
import org.springframework.core.convert.converter.Converter;
import org.springframework.stereotype.Component;
@Component
public class UserConverter implements Converter<String, User>{
 @Override
 public User convert(String source) {
  System.out.println(source);
  String users [] = source.split("-");
  User user = new User();
  user.setUno(Integer.valueOf(users[0]));
  user.setUsername(users[1]);
  user.setUserpass(users[2]);
  return user;
 }
}

<!--将非mapping配置下的请求交给默认的Servlet来处理 -->
 <mvc:default-servlet-handler />
 <bean id="conversionService"
  class="org.springframework.context.support.ConversionServiceFactoryBean">
  <property name="converters">
   <set>
    <ref bean="userConverter" />
   </set>
  </property>
 </bean>
 <!-- 注册类型转换器 -->
 <mvc:annotation-driven conversion-service="conversionService" />

<mvc:annotation-driven conversion-service="FormattingConversionServiceFactoryBean" />

@NotEmpty
 @NotNull
 private String name;
  
 @NotNull
 @NotEmpty
 private String age;
  
 @NotNull
 @NotEmpty
 @Email
 private String email;

@RequestMapping(value="/student",method=RequestMethod.POST)
 public String add(@Valid()Student student,BindingResult result){
  if (!result.hasErrors()) {//判断是否有格式转换错误或者其他校验没通过
   userService.addStudent(student);
   return "redirect:list";
  }else
   return "addPage";
 }

<!-- 注册国际化信息，必须有id，指定资源文件名称，资源文件在src目录下 -->
<bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
 <property name="basename" value="message"></property>
 </bean>