问题
I need to upload a large file to the server, preferably in streaming mode, so that it does not load completely into RAM. Since now, when trying to upload a large file, an exception is thrown
/manager/api/server/import/upload java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:3236) at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:118) at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.java:93) at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:135) at org.eclipse.jetty.util.MultiPartInputStreamParser$MultiPart.write(MultiPartInputStreamParser.java:173) at org.eclipse.jetty.util.MultiPartInputStreamParser.parse(MultiPartInputStreamParser.java:797) at org.eclipse.jetty.util.MultiPartInputStreamParser.getParts(MultiPartInputStreamParser.java:482) at org.eclipse.jetty.server.MultiParts$MultiPartsUtilParser.getParts(MultiParts.java:112) at org.eclipse.jetty.server.Request.getParts(Request.java:2326) at org.eclipse.jetty.server.Request.extractContentParameters(Request.java:529) at org.eclipse.jetty.server.Request.getParameters(Request.java:430) at org.eclipse.jetty.server.Request.getParameter(Request.java:1059) at javax.servlet.ServletRequestWrapper.getParameter(ServletRequestWrapper.java:194) at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:75) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604) at org.springframework.session.web.http.SessionRepositoryFilter.doFilterInternal(SessionRepositoryFilter.java:167) at org.springframework.session.web.http.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:80) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604) at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:106) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:545) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:536) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1592) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
On the frontend for file uploading I use the react and antd
<Upload.Dragger style={{paddingLeft: '10px', paddingRight: '10px'}} action="api/server/import/upload" name={name} onChange={this.changeFileState} showUploadList={false} accept=".zip">
<p className="ant-upload-drag-icon">
<Icon type={icon}/>
</p>
<p className="ant-upload-text">{label}</p>
{this.fileName ? (
<div>
<p className="ant-upload-hint">{this.fileName}</p>
<Progress size="small" status={this.status} percent={this.progress}/>
</div>
) : (
<p className="ant-upload-hint">{hint}</p>
)}
</Upload.Dragger>
The request is received by the next controller
@PostMapping("import/upload")
public void importUpload(
@RequestParam("file")
@ApiParam("Файл с данными для импорта") MultipartFile file) throws Exception {
try (OutputStream outputStream = new FileOutputStream(zipArchive.getFile());
InputStream inputStream = file.getInputStream();) {
byte[] buffer = new byte[8192];
int bytesRead;
while ((bytesRead = inputStream.read(buffer)) > 0) {
outputStream.write(buffer, 0, bytesRead);
}
} catch (Exception ex) {
throw new RuntimeException("Error" + ex.getMessage(), ex);
}
An exception occurs at the stage of mapping parameters. What can I do to download large files (5 Gb) without heavy memory load?
来源：https://stackoverflow.com/questions/58936467/java-heap-space-when-uploading-large-file-to-server-spring-boot-with-embedded-je