SpringMVC效验器

效验器:

1. 效验器依赖

<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
<dependency>
  <groupId>org.hibernate</groupId>
  <artifactId>hibernate-validator</artifactId>
  <version>5.4.1.Final</version>
</dependency>

2. 实体类

public class UserInfo {
    @NotNull(message = "编号不能为空")
    private Integer user_id;

    @NotNull
    @Length(min = 2,max = 8,message = "用户名不能少于2位大于8位")
    private String user_email;

    @Pattern(regexp = "",message = "手机号格式不正确")
    private String user_phone;

    private String user_address;

    @Pattern(regexp = "",message = "身份证号不正确")
    private String user_cardCode;

    //省略get/set方法...
    }

3. 控制器

@RequestMapping("/validate")
public String validate(@Valid UserInfo info, BindingResult bindingResult){
    //如果有异常信息
    if (bindingResult.hasErrors()){
        //获取异常信息对象
        List<ObjectError> errors=bindingResult.getAllErrors();
        //将异常信息输出
        for (ObjectError error : errors){
            System.out.println(error.getDefaultMessage());
        }
    }
    System.out.println(info.getUser_email());
    return "index";
}