!1335 优化BeanUtil.copyToList拷贝较大数据量的性能问题

Merge pull request !1335 from IzayoiYurin/v5-dev

hutool-core/src/main/java/cn/hutool/core/bean/BeanDesc.java

@@ -181,7 +181,8 @@ public class BeanDesc implements Serializable {
 				prop.setter = propIgnoreCase.setter;
 			}
 		}
-
+		// 所有属性完成填充后的初始化逻辑
+		prop.initialize();
 		return prop;
 	}
 

hutool-core/src/main/java/cn/hutool/core/bean/PropDesc.java

@@ -36,6 +36,22 @@ public class PropDesc {
 	 * Setter方法
 	 */
 	protected Method setter;
+	/**
+	 * get方法或字段上有无transient关键字和@Transient注解
+	 */
+	private boolean transientForGet;
+	/**
+	 * set方法或字段上有无transient关键字和@Transient注解
+	 */
+	private boolean transientForSet;
+	/**
+	 * 检查set方法和字段有无@PropIgnore注解
+	 */
+	private boolean ignoreGet;
+	/**
+	 * 检查set方法和字段有无@PropIgnore注解
+	 */
+	private boolean ignoreSet;
 
 	/**
 	 * 构造<br>
@@ -51,6 +67,17 @@ public class PropDesc {
 		this.setter = ClassUtil.setAccessible(setter);
 	}
 
+	/**
+	 * 在对象的所有属性设置完成后，执行初始化逻辑。
+	 * <p>
+	 * 预先计算transient关键字和@Transient注解、{@link PropIgnore}注解信息
+	 */
+	public void initialize() {
+		transientForGet = isTransientForGet();
+		transientForSet = isTransientForSet();
+		ignoreGet = isIgnoreGet();
+		ignoreSet = isIgnoreSet();
+	}
 	/**
 	 * 获取字段名，如果存在Alias注解，读取注解的值作为名称
 	 *
@@ -137,12 +164,12 @@ public class PropDesc {
 		}
 
 		// 检查transient关键字和@Transient注解
-		if (checkTransient && isTransientForGet()) {
+		if (checkTransient && transientForGet) {
 			return false;
 		}
 
 		// 检查@PropIgnore注解
-		return false == isIgnoreGet();
+		return false == ignoreGet;
 	}
 
 	/**
@@ -207,12 +234,12 @@ public class PropDesc {
 		}
 
 		// 检查transient关键字和@Transient注解
-		if (checkTransient && isTransientForSet()) {
+		if (checkTransient && transientForSet) {
 			return false;
 		}
 
 		// 检查@PropIgnore注解
-		return false == isIgnoreSet();
+		return false == ignoreSet;
 	}
 
 	/**

hutool-core/src/main/java/cn/hutool/core/bean/copier/CopyOptions.java

@@ -9,6 +9,7 @@ import cn.hutool.core.lang.Editor;
 import cn.hutool.core.lang.func.Func1;
 import cn.hutool.core.lang.func.LambdaUtil;
 import cn.hutool.core.util.ArrayUtil;
+import cn.hutool.core.util.ClassUtil;
 import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.core.util.StrUtil;
 
@@ -91,6 +92,14 @@ public class CopyOptions implements Serializable {
 			return null;
 		}
 
+		// 快速处理简单值类型的转换
+		if (type instanceof Class){
+			Class<?> targetType = (Class<?>) type;
+			if (ClassUtil.isSimpleValueType(targetType) && targetType.isInstance(value)) {
+				return targetType.cast(value);
+			}
+		}
+
 		if (value instanceof IJSONTypeConverter) {
 			return ((IJSONTypeConverter) value).toBean(ObjectUtil.defaultIfNull(type, Object.class));
 		}

hutool-core/src/test/java/cn/hutool/core/bean/BeanUtilTest.java

@@ -5,6 +5,8 @@ import cn.hutool.core.bean.copier.CopyOptions;
 import cn.hutool.core.bean.copier.ValueProvider;
 import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.collection.ListUtil;
+import cn.hutool.core.date.StopWatch;
+import cn.hutool.core.lang.Console;
 import cn.hutool.core.lang.Dict;
 import cn.hutool.core.map.MapBuilder;
 import cn.hutool.core.map.MapUtil;
@@ -707,6 +709,37 @@ public class BeanUtilTest {
 
 	}
 
+	@Test
+	public void copyLargeListTest(){
+		final SubPerson person = new SubPerson();
+		person.setName("测试A11");
+		person.setAge(14);
+		person.setOpenid("11213232");
+
+		person.setId(UUID.randomUUID());
+		person.setSubName("sub名字");
+		person.setSlow(true);
+		person.setDate(LocalDateTime.now());
+		person.setDate2(LocalDate.now());
+
+		final List<SubPerson> list = new ArrayList<>();
+		CollUtil.padRight(list, 1000, person);
+
+		// 预先构建一次缓存，防止干扰
+		BeanUtil.copyProperties(person, new SubPerson2());
+		// org.springframework.beans.BeanUtils.copyProperties(new SubPerson(), new SubPerson2());
+
+		Console.log("copy bean size: {}\n", list.size());
+		final StopWatch stopWatch = new StopWatch();
+		stopWatch.start("BeanUtil#copyToList");
+		List<SubPerson2> copyList = BeanUtil.copyToList(list, SubPerson2.class);
+		// list.forEach(item -> org.springframework.beans.BeanUtils.copyProperties(item, new SubPerson2()));
+		stopWatch.stop();
+		Console.log(stopWatch.prettyPrint());
+		assertEquals(copyList.size(),list.size());
+	}
+
+
 	@Test
 	public void toMapTest() {
 		// 测试转map的时候返回key