Springboot自定义注解校验

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Springboot自定义注解校验

---

自定义注解类

package com.kiet.springboot_project.setting;

import com.kiet.springboot_project.configuration.FlagValidatorClass;

import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.*;

/**
 * Description: 自定义注解校验
 * Author:   tianhong yu
 * Date:     2018/8/13 10:20
 */
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.PARAMETER,ElementType.FIELD})
@Constraint(validatedBy = FlagValidatorClass.class)
public @interface FlagValidator  {
    // flag的有效值多个使用,隔开
    String values();
    // 提示内容
    String message() default "flag不存在";
    Class<?>[] groups() default {};
    Class<? extends Payload>[] payload() default {};
}

---

配置

/**
 * Description:
 * Author:   tianhong yu
 * Date:     2018/8/13 10:27
 */
public class FlagValidatorClass implements ConstraintValidator<FlagValidator,Object> {

    // 保存flag值
    private String values;

    @Override
    public void initialize(FlagValidator flagValidator) {
        // 注解内配的值赋值给变量
        this.values = flagValidator.values();
    }

    @Override
    public boolean isValid(Object value, ConstraintValidatorContext constraintValidatorContext) {
        // 切割获取值
        String[] value_array = values.split(",");
        Boolean isFlag = false;
        for (int i = 0; i < value_array.length; i++){
            // 存在一致就跳出循环
            if (value_array[i] .equals(value)){
                isFlag = true;
                break;
            }
        }
        return isFlag;
    }
}

---

校验

package com.kiet.springboot_project.entity;

import com.kiet.springboot_project.setting.FlagValidator;
import org.hibernate.validator.constraints.Length;

import javax.validation.constraints.Email;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotBlank;
import java.io.Serializable;

/**
 * Description: 数据校验
 * Author:   tianhong yu
 * Date:     2018/8/10 16:54
 */
public class ValidatorEntity implements Serializable {

    @NotBlank
    @Length(max = 20,min = 2)
    private String name;

    @Min(value = 1)
    private Integer age;

    @NotBlank
    @Email
    private String email;

    @FlagValidator(values = "1,2,3")
    private String flag ;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getFlag() {
        return flag;
    }

    public void setFlag(String flag) {
        this.flag = flag;
    }
}