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

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Merge pull request !1335 from IzayoiYurin/v5-dev
This commit is contained in:
Looly
2025-04-26 05:17:24 +00:00
committed by Gitee
parent 9015c3ea0a bff3ddc2f1
commit 3ff79b3f23
4 changed files with 75 additions and 5 deletions
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33
hutool-core/src/test/java/cn/hutool/core/bean/BeanUtilTest.java
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@@ -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