hutool HttpRequest.post 请求包含大文件报错Java heap space

hutool���本： hutool-all-5.7.20

hutool官网文档：Http请求-HttpRequest | Hutool

请求代码，file小于700m正常请求，大于700m就报错java.lang.OutOfMemoryError: Java heap space

 HttpResponse response = HttpRequest.post(urlStr)                                      .form("bid_section_no", req.getBid_section_no())                    .form("type", req.getType())                    .form("file", file)                    .execute();

 具体异常如下，可以定位到是execute执行请求时抛出的，有一点需要注意，try catch (Throwable e)才能打印出改异常，用Exception还打印不出来。。

09:42:21.155 ERROR [o5zclD18cbb4d076] ive.service.ElectronicArchiveService 578  - 【档案系统对接】推送附件信息异常：{} java.lang.OutOfMemoryError: Java heap spaceat java.util.Arrays.copyOf(Arrays.java:3236) ~[?:1.8.0_241]at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:118) ~[?:1.8.0_241]at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.java:93) ~[?:1.8.0_241]at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:135) ~[?:1.8.0_241]at sun.net.www.http.PosterOutputStream.write(PosterOutputStream.java:63) ~[?:1.8.0_241]at cn.hutool.http.MultipartOutputStream.write(MultipartOutputStream.java:108) ~[hutool-all-5.7.20.jar:?]at java.io.OutputStream.write(OutputStream.java:116) ~[?:1.8.0_241]at cn.hutool.core.io.copy.StreamCopier.doCopy(StreamCopier.java:102) ~[hutool-all-5.7.20.jar:?]at cn.hutool.core.io.copy.StreamCopier.copy(StreamCopier.java:68) ~[hutool-all-5.7.20.jar:?]at cn.hutool.core.io.IoUtil.copy(IoUtil.java:162) ~[hutool-all-5.7.20.jar:?]at cn.hutool.core.io.IoUtil.copy(IoUtil.java:146) ~[hutool-all-5.7.20.jar:?]at cn.hutool.core.io.IoUtil.copy(IoUtil.java:132) ~[hutool-all-5.7.20.jar:?]at cn.hutool.core.io.IoUtil.copy(IoUtil.java:119) ~[hutool-all-5.7.20.jar:?]at cn.hutool.core.io.resource.Resource.writeTo(Resource.java:65) ~[hutool-all-5.7.20.jar:?]at cn.hutool.http.MultipartOutputStream.appendResource(MultipartOutputStream.java:163) ~[hutool-all-5.7.20.jar:?]at cn.hutool.http.MultipartOutputStream.write(MultipartOutputStream.java:96) ~[hutool-all-5.7.20.jar:?]at cn.hutool.http.body.MultipartBody$$Lambda95/1472378755.accept(Unknown Source) ~[?:?]at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) ~[?:1.8.0_241]at cn.hutool.http.body.MultipartBody.write(MultipartBody.java:78) ~[hutool-all-5.7.20.jar:?]at cn.hutool.http.body.RequestBody.writeClose(RequestBody.java:27) ~[hutool-all-5.7.20.jar:?]at cn.hutool.http.HttpRequest.sendMultipart(HttpRequest.java:1260) ~[hutool-all-5.7.20.jar:?]at cn.hutool.http.HttpRequest.send(HttpRequest.java:1214) ~[hutool-all-5.7.20.jar:?]at cn.hutool.http.HttpRequest.doExecute(HttpRequest.java:1106) ~[hutool-all-5.7.20.jar:?]at cn.hutool.http.HttpRequest.execute(HttpRequest.java:997) ~[hutool-all-5.7.20.jar:?]at cn.hutool.http.HttpRequest.execute(HttpRequest.java:973) ~[hutool-all-5.7.20.jar:?]at cn.pinming.jsgc.thirds.pusharchive.service.ElectronicArchiveService.pushArchiveFile(ElectronicArchiveService.java:570) ~[classes/:5.0-SNAPSHOT]at cn.pinming.jsgc.thirds.pusharchive.service.ElectronicArchiveService$$FastClassBySpringCGLIB$ed1858e.invoke() ~[classes/:5.0-SNAPSHOT]at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.1.5.RELEASE.jar:5.1.5.RELEASE]at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749) ~[spring-aop-5.1.5.RELEASE.jar:5.1.5.RELEASE]at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.1.5.RELEASE.jar:5.1.5.RELEASE]at org.springframework.transaction.interceptor.TransactionInterceptor$$Lambda8/1208319854.proceedWithInvocation(Unknown Source) ~[?:?]at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294) ~[spring-tx-5.1.5.RELEASE.jar:5.1.5.RELEASE]09:42:21.374 ERROR [o5zclD18cbb4d076] ive.service.ElectronicArchiveService 579  - java.lang.OutOfMemoryError: Java heap space

经过一番查找发现可以设置个属性避免内存问题，setChunkedStreamingMode

//这个方法表示不使用PosterOutputStream而使用HttpURLConnection$StreamingOutputStream

//防止OutOfMemory。

setChunkedStreamingMode(0) 就是表示使用PosterOutputStream输出流,会把文件全部缓存到内存后发送，需要设置对应分块大小，例如setChunkedStreamingMode(4096)才会使用StreamingOutputStream输出流

最终改成如下方式成功请求并返回

HttpResponse response = HttpRequest.post(urlStr)                    .setChunkedStreamingMode(4096)                    .form("bid_section_no", req.getBid_section_no())                    .form("type", req.getType())                    .form("file", file)                    .execute();

BUD.....

14:18:44.649 DEBUG [U32T1k18ccd4f103] pping.InterfaceLogParamMapper.insert 137  -