feat: 增加唯一字段验证

flyfish-common/src/main/java/com/flyfish/framework/validation/annotations/UniqueField.java

@@ -0,0 +1,44 @@
+package com.flyfish.framework.validation.annotations;
+
+
+import com.flyfish.framework.validation.validators.IdCardValidator;
+
+import javax.validation.Constraint;
+import javax.validation.Payload;
+import java.lang.annotation.Documented;
+import java.lang.annotation.Repeatable;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+import com.flyfish.framework.validation.annotations.UniqueField.List;
+import com.flyfish.framework.validation.validators.UniqueFieldValidator;
+
+import static java.lang.annotation.ElementType.*;
+import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+@Target({METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER})
+@Retention(RUNTIME)
+@Documented
+@Constraint(validatedBy = {UniqueFieldValidator.class})
+@Repeatable(List.class)
+public @interface UniqueField {
+
+    String message() default "集合中的关键字段不唯一！";
+
+    // 唯一字段
+    String value();
+
+    //分组
+    Class<?>[] groups() default {};
+
+    //负载
+    Class<? extends Payload>[] payload() default {};
+
+    //指定多个时使用
+    @Target({FIELD, METHOD, PARAMETER, ANNOTATION_TYPE})
+    @Retention(RUNTIME)
+    @Documented
+    @interface List {
+        UniqueField[] value();
+    }
+}

flyfish-common/src/main/java/com/flyfish/framework/validation/validators/UniqueFieldValidator.java

@@ -0,0 +1,61 @@
+package com.flyfish.framework.validation.validators;
+
+
+import com.flyfish.framework.validation.annotations.UniqueField;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.ClassUtils;
+import org.springframework.beans.BeanUtils;
+
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+import java.beans.PropertyDescriptor;
+import java.lang.reflect.InvocationTargetException;
+import java.util.List;
+import java.util.Map;
+
+public class UniqueFieldValidator implements ConstraintValidator<UniqueField, List<Object>> {
+
+    private String field;
+
+    @Override
+    public void initialize(UniqueField uniqueField) {
+        this.field = uniqueField.value();
+    }
+
+    /**
+     * Implements the validation logic.
+     * The state of {@code value} must not be altered.
+     * <p>
+     * This method can be accessed concurrently, thread-safety must be ensured
+     * by the implementation.
+     *
+     * @param value   object to validate
+     * @param context context in which the constraint is evaluated
+     * @return {@code false} if {@code value} does not pass the constraint
+     */
+    @Override
+    public boolean isValid(List<Object> value, ConstraintValidatorContext context) {
+        int size = CollectionUtils.size(value);
+        if (size < 2) {
+            return true;
+        }
+        long count = value.stream().map(item -> {
+            if (item instanceof String || ClassUtils.isPrimitiveOrWrapper(item.getClass())) {
+                return item;
+            }
+            if (item instanceof Map) {
+                return ((Map<?, ?>) item).get(field);
+            }
+            try {
+                PropertyDescriptor descriptor = BeanUtils.getPropertyDescriptor(item.getClass(), field);
+                if (null != descriptor) {
+                    return descriptor.getReadMethod().invoke(item);
+                }
+                return null;
+            } catch (IllegalAccessException | InvocationTargetException ignored) {
+                return null;
+            }
+        }).distinct().count();
+        return count == size;
+    }
+}

flyfish-web/src/main/java/com/flyfish/framework/beans/enums/ValidationCandidate.java

@@ -4,6 +4,7 @@ import com.flyfish.framework.beans.meta.BeanPropertyType;
 import com.flyfish.framework.beans.meta.BeanValidation;
 import com.flyfish.framework.validation.annotations.IdCard;
 import com.flyfish.framework.validation.annotations.Phone;
+import com.flyfish.framework.validation.annotations.UniqueField;
 import com.flyfish.framework.validation.enums.PhoneType;
 import lombok.Getter;
 import org.hibernate.validator.constraints.Currency;
@@ -67,10 +68,13 @@ public enum ValidationCandidate {
     // 货币
     CURRENCY((annotation, validation) -> validation.setValidator("currency"), Currency.class),
     // 手机号
-    PHONE(((annotation, validation) -> validation.setValidator("phone").prop("type",
-            annotation.getEnum("type", PhoneType.class).name().toLowerCase())), Phone.class),
+    PHONE((annotation, validation) -> validation.setValidator("phone").prop("type",
+            annotation.getEnum("type", PhoneType.class).name().toLowerCase()), Phone.class),
     // 身份证号
-    ID_CARD(((annotation, validation) -> validation.setValidator("idCard")), IdCard.class);
+    ID_CARD((annotation, validation) -> validation.setValidator("idCard"), IdCard.class),
+    // 唯一字段
+    UNIQUE_FIELD((annotation, validation) -> validation.setValidator("uniqueField")
+            .prop("field", annotation.getString("value")), UniqueField.class);
 
     private final BiConsumer<MergedAnnotation<?>, BeanValidation> mapper;