Spring Mvc使用JSR-303验证

短命女 2022-04-13 12:17 141阅读 0赞

提前注意：可能会出现 以下错误

**Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: javax/el/ELManager**

**避免方法：使用 tomcat9**

需要maven依赖

<dependency>
          <groupId>org.hibernate.validator</groupId>
          <artifactId>hibernate-validator</artifactId>
          <version>6.0.13.Final</version>
        </dependency>
        
        <dependency>
          <groupId>javax.validation</groupId>
          <artifactId>validation-api</artifactId>
          <version>2.0.1.Final</version>
        </dependency>

Bean代码

public class LoseUser   {
    	public interface Register{};//注册功能分组
    	public interface SendRegisterEmailCode{};
    	private Integer id ;
    	@Email(message = "邮箱格式不正确",groups = {Register.class,SendRegisterEmailCode.class})
    	private String loginname ;
    	@Size(min = 8,max = 16,message = "密码长度为8-16位",groups = {Register.class})
    	private String password ;
    	@Size(min = 6,max = 6,message = "验证码格式不正确",groups = {Register.class})
    	private String emailCode;//邮箱验证码
    	
    	public LoseUser() {
    	}
        //省略get、set方法
    }

控制器代码

@RequestMapping("sendEmailCode")
        @ResponseBody
        public AjaxRes sendEmailCode(@Validated({LoseUser.SendRegisterEmailCode.class}) LoseUser loseUser,BindingResult result){
            AjaxRes res=new AjaxRes();
            if(result.hasErrors()){
                List<ObjectError> allErrors = result.getAllErrors();
                FieldError objectError = (FieldError)allErrors.get(0);//每次取出第一个错误，并且返回到前端
                res.setFailMsg(objectError.getDefaultMessage());
                return res;
            }else {
                res.setFailMsg("验证失败");
                return res;
            }
        }