From 2e183532d656016b5b3058c67263f5f2f16ae6c3 Mon Sep 17 00:00:00 2001
From: liuy <37787198+LiuyCodes@users.noreply.github.com>
Date: Fri, 2 Aug 2024 18:16:54 +0800
Subject: [PATCH] =?UTF-8?q?=E6=8F=90=E4=BA=A4util=E4=BB=A3=E7=A0=81?=
MIME-Version: 1.0
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---
.../com/hzya/frame/beanutil/BeanUtil.java | 104 +++++++++++++++++-
.../frame/split/SplitListByCountUtil.java | 38 +++++++
2 files changed, 140 insertions(+), 2 deletions(-)
create mode 100644 common/src/main/java/com/hzya/frame/split/SplitListByCountUtil.java
diff --git a/common/src/main/java/com/hzya/frame/beanutil/BeanUtil.java b/common/src/main/java/com/hzya/frame/beanutil/BeanUtil.java
index 12d83d25..4f3e25fd 100644
--- a/common/src/main/java/com/hzya/frame/beanutil/BeanUtil.java
+++ b/common/src/main/java/com/hzya/frame/beanutil/BeanUtil.java
@@ -1,5 +1,12 @@
package com.hzya.frame.beanutil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.lang.reflect.Field;
+import java.util.HashMap;
+import java.util.Map;
+
/**
* @Content
* @Author 👻👻👻👻👻👻👻👻👻👻 gjh
@@ -8,7 +15,100 @@ package com.hzya.frame.beanutil;
*/
public class BeanUtil {
- public static String getBean(){
- return "232";
+ static Logger logger = LoggerFactory.getLogger(BeanUtil.class);
+
+ public static String getBean() {
+ return "232";
+ }
+
+ /**
+ * 忽略大小写的bean copy方法
+ *
+ * @author liuyang
+ */
+ public static <T> T copyProperties(Object source, Object target) {
+ Map<String, Field> sourceMap = CacheFieldMap.getFieldMap(source.getClass());
+ CacheFieldMap.getFieldMap(target.getClass()).values().forEach((it) -> {
+ logger.info(it.getName());
+ Field field = sourceMap.get(it.getName().toLowerCase().replace("_", ""));
+ if (field != null) {
+ it.setAccessible(true);
+ field.setAccessible(true);
+ try {
+ //忽略null
+ if (field.get(source) != null) {
+ if ("java.lang.Long".equals(it.getType().getName())) {
+ it.set(target, Long.valueOf(field.get(source) + ""));
+ } else {
+ it.set(target, field.get(source));
+ }
+ }
+ } catch (IllegalAccessException e) {
+ e.printStackTrace();
+ }
+ }
+ });
+ return (T) target;
+ }
+
+ /**
+ * 忽略大小写的 bean copy 方法，可获取父类字段
+ *
+ * @author liuyang
+ */
+ public static <T> T copyPropertiesV2(Object source, Object target) {
+ // 获取 target 及其父类的所有字段映射
+ Map<String, Field> targetFieldMap = new HashMap<>();
+ Class<?> currentClass = target.getClass();
+ while (currentClass != null) {
+ Map<String, Field> currentClassMap = CacheFieldMap.getFieldMap(currentClass);
+ currentClassMap.forEach((key, value) -> targetFieldMap.put(key, value));
+ currentClass = currentClass.getSuperclass();
+ }
+
+ Map<String, Field> sourceMap = CacheFieldMap.getFieldMap(source.getClass());
+
+ targetFieldMap.values().forEach((it) -> {
+ logger.info(it.getName());
+ Field field = sourceMap.get(it.getName().toLowerCase().replace("_", ""));
+ if (field != null) {
+ it.setAccessible(true);
+ field.setAccessible(true);
+ try {
+ // 忽略 null
+ if (field.get(source) != null) {
+ if ("java.lang.Long".equals(it.getType().getName())) {
+ it.set(target, Long.valueOf(field.get(source) + ""));
+ } else {
+ it.set(target, field.get(source));
+ }
+ }
+ } catch (IllegalAccessException e) {
+ e.printStackTrace();
+ }
+ }
+ });
+ return (T) target;
+ }
+
+ private static class CacheFieldMap {
+ private static Map<String, Map<String, Field>> cacheMap = new HashMap<>();
+
+ private static Map<String, Field> getFieldMap(Class clazz) {
+ Map<String, Field> result = cacheMap.get(clazz.getName());
+ if (result == null) {
+ synchronized (CacheFieldMap.class) {
+ if (result == null) {
+ Map<String, Field> fieldMap = new HashMap<>();
+ for (Field field : clazz.getDeclaredFields()) {
+ fieldMap.put(field.getName().toLowerCase().replace("_", ""), field);
+ }
+ cacheMap.put(clazz.getName(), fieldMap);
+ result = cacheMap.get(clazz.getName());
+ }
+ }
+ }
+ return result;
+ }
}
}
diff --git a/common/src/main/java/com/hzya/frame/split/SplitListByCountUtil.java b/common/src/main/java/com/hzya/frame/split/SplitListByCountUtil.java
new file mode 100644
index 00000000..c7f0211a
--- /dev/null
+++ b/common/src/main/java/com/hzya/frame/split/SplitListByCountUtil.java
@@ -0,0 +1,38 @@
+package com.hzya.frame.split;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @Author：liuyang
+ * @Package：com.hzya.frame.split
+ * @Project：kangarooDataCenterV3
+ * @name：SplitListByCountUtil
+ * @Date：2024/8/2 14:20
+ * @Filename：SplitListByCountUtil
+ */
+public class SplitListByCountUtil {
+ /**
+ * List集合拆分
+ *
+ * @param list 原始数据 6000
+ * @param count 每个list的元素数量 1000
+ * @return 拆分得到的list集合
+ */
+ public static <T> List<List<T>> splitListByCount(List<T> list, int count) {
+ List<List<T>> listAll = new ArrayList<>();
+ int size = list.size();
+ if (size > count) { //*size:6000 > count: 1000
+ int absInt = Math.abs(size / count); //6
+ if (size - absInt * count > 0) {
+ listAll.add(list.subList(absInt * count, size));
+ }
+ for (int i = 1; i < absInt + 1; i++) {
+ listAll.add(list.subList((i - 1) * count, i * count));
+ }
+ } else {
+ listAll.add(list);
+ }
+ return listAll;
+ }
+}