From beb6b074f7874e07c91c84f0172436cf18caa229 Mon Sep 17 00:00:00 2001
From: yuejiajun <1530620364@qq.com>
Date: Tue, 30 Sep 2025 16:02:42 +0800
Subject: [PATCH] =?UTF-8?q?=E8=87=AA=E5=AE=9A=E4=B9=89=E8=BF=87=E6=BB=A4?=
 =?UTF-8?q?=E5=8A=9F=E8=83=BD?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../demo/common/filter/CustomJsonFilter.java  | 74 +++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 src/main/java/com/example/demo/common/filter/CustomJsonFilter.java

diff --git a/src/main/java/com/example/demo/common/filter/CustomJsonFilter.java b/src/main/java/com/example/demo/common/filter/CustomJsonFilter.java
new file mode 100644
index 0000000..c22c1d2
--- /dev/null
+++ b/src/main/java/com/example/demo/common/filter/CustomJsonFilter.java
@@ -0,0 +1,74 @@
+package com.example.demo.common.filter;
+
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.*;
+
+@Slf4j
+public class CustomJsonFilter {
+
+    @SuppressWarnings("all")
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null) {
+            return true;
+        }
+        boolean flag = !shouldInclude(obj);
+        log.trace("{} => {}", flag, obj);
+        return flag;
+    }
+
+    /**
+     * 判断值是否应该被包含
+     */
+    private boolean shouldInclude(Object value) {
+        // 处理空字符串
+        if (value instanceof CharSequence) {
+            return !((CharSequence) value).isEmpty();
+        }
+
+        // 处理空集合
+        if (value instanceof Collection) {
+            return !((Collection<?>) value).isEmpty();
+        }
+        // 处理空Map
+        if (value instanceof Map) {
+            return !((Map<?, ?>) value).isEmpty();
+        }
+        // 处理空数组
+        if (value instanceof Object[]) {
+            return ((Object[]) value).length > 0;
+        }
+
+        // 处理基本类型数组
+        if (value instanceof int[]) {
+            return ((int[]) value).length > 0;
+        }
+        if (value instanceof long[]) {
+            return ((long[]) value).length > 0;
+        }
+        if (value instanceof double[]) {
+            return ((double[]) value).length > 0;
+        }
+        if (value instanceof boolean[]) {
+            return ((boolean[]) value).length > 0;
+        }
+        if (value instanceof char[]) {
+            return ((char[]) value).length > 0;
+        }
+        if (value instanceof byte[]) {
+            return ((byte[]) value).length > 0;
+        }
+        if (value instanceof float[]) {
+            return ((float[]) value).length > 0;
+        }
+
+        // 处理空Optional
+        if (value instanceof Optional) {
+            return ((Optional<?>) value).isPresent();
+        }
+
+        // 其他对象类型，只要不为null就包含
+        return true;
+    }
+}