BeanUtils.copyProperties 和 fastjson 性能对比
声明
测试方法非严格方式, 测试结果以及结论仅供参考!
测试方法非严格方式, 测试结果以及结论仅供参考!
测试方法非严格方式, 测试结果以及结论仅供参考!
测试环境
cpu: i5-8400(6c 6t 3.8 主频)内存: 16*2(2666 频率)系统: 10.14.6 (18G95)
测试样本
用 json 输出大概是 7kb
对比测试方法
BeanUtils.copyProperties 有的字段无法正确复制, 我们用 json 序列化(兼容性好)来进行对比测试
json 工具使用的是阿里 fastJson
由于测试循环中加入了一个检测是否新建对象的逻辑(防止程序自动优化出现假的字段拷贝), 所以实际执行时间会比给出的测试耗时要稍微短一点
第一轮测试(10 次循环)
测试次数
10 次循环
测试结果
测试结果相差无几, 有时 BeanUtils 快点, 有时 json 的方式快点, 应该是样本量太小导致成绩受系统波动的影响太大
第二轮测试(100 次循环)
测试次数
100 次循环
测试结果
| 序号 | 方式 | 耗时 |
|---|---|---|
| 1 | BeanUtils | 4ms |
| 1 | json | 41ms |
| 2 | BeanUtils | 4ms |
| 2 | json | 47ms |
| 3 | BeanUtils | 1ms |
| 3 | json | 13ms |
| 4 | BeanUtils | 1ms |
| 4 | json | 11ms |
已经体现出一些差距了
第三轮测试(1000 次循环)
测试次数
1000 次循环
测试结果
| 序号 | 方式 | 耗时 |
|---|---|---|
| 1 | BeanUtils | 8ms |
| 1 | json | 110ms |
| 2 | BeanUtils | 3ms |
| 2 | json | 61ms |
| 3 | BeanUtils | 2ms |
| 3 | json | 67ms |
| 4 | BeanUtils | 3ms |
| 4 | json | 67ms |
1000 次循环的轻度下大约是 20 倍的性能差距, 不过波动还是比较大, 我们继续增加次数
第四轮测试(10000 次循环)
测试次数
10000 次循环
测试结果
| 序号 | 方式 | 耗时 |
|---|---|---|
| 1 | BeanUtils | 33ms |
| 1 | json | 638ms |
| 2 | BeanUtils | 33ms |
| 2 | json | 643ms |
| 3 | BeanUtils | 25ms |
| 3 | json | 621ms |
| 4 | BeanUtils | 31ms |
| 4 | json | 630ms |
还是大约是 20 倍左右的性能差距, 第三组蹦跶到快 25 倍了
第五轮测试(200000 次循环)
测试次数
200000 次循环
测试结果
依旧是 20 倍左右的差距, 循环 200000 次但新建对象不是预期的 200000 而总是少 10 个左右...
结论
使用 BeanUtils 自动复制字段, 性能大概是 json序列化 方式复制字段的 20倍, 不过如果对象不是十分复杂, 这个差距可以接受, 性能不敏感的话可以考虑使用 json序列化 的方式进行字段复制
源码
测试关键逻辑源码
final int testNums = 200000;
Map<String, String> map = Maps.newHashMap("key", "value");
long startTime1 = nowMillis();
int num = testNums;
int count = 0;
while (num > 0) {
num--;
count++;
Page<EvaluationUserWithResult> tempReturnPage = new Page<>();
BeanUtils.copyProperties(evaluationUserPage, tempReturnPage);
map.put(tempReturnPage.hashCode() + "", tempReturnPage.hashCode() +"");
}
log.error("beanutil循环{}次, 新建临时对象{}个, 用时{}", count, map.size()-1, DateTimeStyle.duration(startTime1));
long startTime2 = nowMillis();
num = testNums;
map = Maps.newHashMap("key", "value");
count = 0;
while (num > 0) {
num--;
count++;
Page<EvaluationUserWithResult> tempReturnPage = new Page<>();
tempReturnPage = JSON.parseObject(JSON.toJSONString(evaluationUserPage), tempReturnPage.getClass());
map.put(tempReturnPage.hashCode() + "", tempReturnPage.hashCode() +"");
}
log.error("json循环{}次, 新建临时对象{}个, 用时{}", count, map.size()-1, DateTimeStyle.duration(startTime2));
样本数据
{
"code": 0,
"msg": "成功",
"data": {
"itemsWithResult": [
{
"maxProgress": 6,
"hmoId": "CYH3211204110000",
"medChannel": 2,
"updateTime": 1569746589000,
"evaluationTime": 1569746589000,
"userName": "202",
"itemsResult": {
"bc": "",
"op": "较高风险",
"dyslipemia": "高危",
"diab": "已患病",
"lungcnacer": "暂无风险",
"stroke": "中危人群",
"cvd": "较高风险",
"pc": "暂无风险",
"sportrisk": "较高风险",
"hbp": "高风险",
"疾病类型": "疾病风险程度",
"depression": "可能有重度抑郁倾向",
"obesity": "正常"
},
"userAge": 39,
"evaluationId": "8a3147b08opsf878da8622525389fd26",
"userUnit": "gryh",
"createTime": 1569745748000,
"medChannelDesc": "医生录入",
"userMobile": "99300000202",
"progress": 6,
"personId": "test2",
"userGender": 1,
"id": 546,
"evaluationKey": "PersonalHealthRiskEvaluation",
"evaluationState": 1
},
{
"maxProgress": 6,
"hmoId": "CYH3211204110000",
"medChannel": 2,
"updateTime": 1569745630000,
"evaluationTime": 1569745629000,
"userName": "32423",
"itemsResult": {
"bc": "",
"op": "较低风险",
"dyslipemia": " 低危",
"diab": "已患病",
"lungcnacer": "暂无风险",
"stroke": "高危人群",
"cvd": "中等风险",
"pc": "高危",
"sportrisk": "较高风险",
"hbp": "已异常",
"疾病类型": "疾病风险程度",
"depression": "可能有重度抑郁倾向",
"obesity": "正常"
},
"userAge": 39,
"evaluationId": "833a6eac1dbss673f54f44f5c1c62d7a",
"userUnit": "gryh",
"createTime": 1563876718000,
"medChannelDesc": "医生录入",
"userMobile": "15999999999",
"progress": 6,
"personId": "test2",
"userGender": 1,
"id": 495,
"evaluationKey": "PersonalHealthRiskEvaluation",
"evaluationState": 1
},
{
"maxProgress": 6,
"hmoId": "CYH3211204110000",
"medChannel": 2,
"updateTime": 1563876694000,
"evaluationTime": 1563876693000,
"userName": "测试",
"itemsResult": {
"bc": "",
"op": "较低风险",
"dyslipemia": " 低危",
"diab": "高风险",
"lungcnacer": " 低危",
"stroke": "低危人群",
"cvd": "较低风险",
"pc": "高危",
"sportrisk": "中等风险",
"hbp": "中等风险",
"疾病类型": "疾病风险程度",
"depression": "可能有中重度抑郁倾向",
"obesity": "正常"
},
"userAge": 39,
"evaluationId": "2a9ggg508e47412fc5cc092d7ae7c05e",
"userUnit": "gryh",
"createTime": 1557737311000,
"medChannelDesc": "医生录入",
"userMobile": "15999930566",
"progress": 6,
"personId": "test1",
"userGender": 1,
"id": 487,
"evaluationKey": "PersonalHealthRiskEvaluation",
"evaluationState": 1
},
{
"maxProgress": 7,
"hmoId": "CYH3211204110000",
"medChannel": 1,
"updateTime": 1562763683000,
"evaluationTime": 1557473650000,
"userName": "测试2",
"itemsResult": {
"bc": "较高风险",
"op": "较低风险",
"dyslipemia": " 低危",
"diab": "高风险",
"lungcnacer": "暂无风险",
"stroke": "低危人群",
"cvd": "高风险",
"pc": "",
"sportrisk": "较低风险",
"hbp": "高风险",
"疾病类型": "疾病风险程度",
"depression": "可能有中度抑郁倾向",
"obesity": "超重"
},
"userAge": 39,
"evaluationId": "ba8cd69396f3603e6e7b27e7f77d5a4a",
"userUnit": "gryh",
"createTime": 1557473530000,
"medChannelDesc": "用户填写",
"userMobile": "手机号2",
"progress": 7,
"personId": "test3",
"userGender": 2,
"id": 483,
"evaluationKey": "PersonalHealthRiskEvaluation",
"evaluationState": 4
},
{
"maxProgress": 6,
"hmoId": "CYH3211204110000",
"medChannel": 1,
"updateTime": 1557473641000,
"evaluationTime": 1557473641000,
"userName": "测试2",
"itemsResult": {
"bc": "",
"op": "较低风险",
"dyslipemia": " 低危",
"diab": "高风险",
"lungcnacer": "暂无风险",
"stroke": "低危人群",
"cvd": "较高风险",
"pc": "极高危",
"sportrisk": "中等风险",
"hbp": "高风险",
"疾病类型": "疾病风险程度",
"depression": "可能有重度抑郁倾向",
"obesity": "超重"
},
"userAge": 39,
"evaluationId": "edf65b5a233cfd2eggf1c548374cde8f",
"userUnit": "gryh",
"createTime": 1557473249000,
"medChannelDesc": "用户填写",
"userMobile": "手机号2",
"progress": 6,
"personId": "test",
"userGender": 1,
"id": 482,
"evaluationKey": "PersonalHealthRiskEvaluation",
"evaluationState": 1
}
],
"pageNo": 1,
"pageSize": 5,
"pageCount": 3,
"recordCount": 13
}
}
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