add

spring-boot/paramsCheck/src/main/java/com/fanxb/exceptiontest/controller/TestController.java

@@ -8,6 +8,7 @@ import com.fanxb.exceptiontest.entity.exception.CustomBusinessException;
 import com.fanxb.exceptiontest.entity.vo.TestBody;
 import com.fanxb.exceptiontest.entity.vo.TestBody2;
 import com.fanxb.exceptiontest.entity.vo.TestBody3;
+import com.fanxb.exceptiontest.entity.vo.TestBody4;
 import org.hibernate.validator.constraints.Range;
 import org.springframework.validation.BindException;
 import org.springframework.validation.annotation.Validated;
@@ -65,4 +66,12 @@ public class TestController {
         return null;
     }
 
+    /**
+     * 自定义校验
+     */
+    @PostMapping("/test6")
+    public Result test6(@Validated @RequestBody TestBody4 testBody) {
+        return null;
+    }
+
 }

spring-boot/paramsCheck/src/main/java/com/fanxb/exceptiontest/entity/validation/CustomCheckValidator.java

@@ -0,0 +1,26 @@
+package com.fanxb.exceptiontest.entity.validation;
+
+import com.fanxb.exceptiontest.entity.validation.annotation.CustomCheck;
+
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+
+/**
+ * @author fanxb
+ * @date 2021-10-08 23:27
+ */
+public class CustomCheckValidator implements ConstraintValidator<CustomCheck, String> {
+    private String param1;
+
+    @Override
+    public void initialize(CustomCheck constraintAnnotation) {
+        //在此获取校验参数
+        param1 = constraintAnnotation.param1();
+        ConstraintValidator.super.initialize(constraintAnnotation);
+    }
+
+    @Override
+    public boolean isValid(String s, ConstraintValidatorContext constraintValidatorContext) {
+        return param1 != null && param1.equals(s);
+    }
+}

spring-boot/paramsCheck/src/main/java/com/fanxb/exceptiontest/entity/validation/annotation/CustomCheck.java

@@ -0,0 +1,33 @@
+package com.fanxb.exceptiontest.entity.validation.annotation;
+
+import com.fanxb.exceptiontest.entity.validation.CustomCheckValidator;
+
+import javax.validation.Constraint;
+import javax.validation.Payload;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * @author fanxb
+ * @date 2021-10-08-23:22
+ */
+
+@Target({ElementType.FIELD}) //作用于字段
+@Retention(RetentionPolicy.RUNTIME)//生命周期
+@Constraint(validatedBy = CustomCheckValidator.class)//校验逻辑实现类
+public @interface CustomCheck {
+
+    String message() default "自定义校验默认错误提示";
+
+    /**
+     * 自定义参数，可传递到校验实现类CustomCheckValidator中
+     */
+    String param1() default "";
+
+    Class<?>[] groups() default {}; //用于分组校验
+
+    Class<? extends Payload>[] payload() default {};
+
+}

spring-boot/paramsCheck/src/main/java/com/fanxb/exceptiontest/entity/vo/TestBody4.java

@@ -0,0 +1,20 @@
+package com.fanxb.exceptiontest.entity.vo;
+
+import com.fanxb.exceptiontest.entity.consistant.Insert;
+import com.fanxb.exceptiontest.entity.consistant.Update;
+import com.fanxb.exceptiontest.entity.validation.annotation.CustomCheck;
+import lombok.Data;
+
+import javax.validation.constraints.NotBlank;
+
+/**
+ * @author fanxb
+ * @date 2021-09-28-下午4:29
+ */
+@Data
+public class TestBody4 {
+    @CustomCheck(message = "此参数固定为fff", param1 = "fff")
+    private String param1;
+    @CustomCheck(message = "此参数固定为ggg", param1 = "ggg")
+    private String param2;
+}