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写这个程序解压缩并提取文件到亚马逊S3。我遇到了一个java堆错误。Java堆空间 - ByteArrayOutputStream.Write
我试过的东西: 增加参数上的堆空间。 将字节大小更改为[1024 * 1024]
在outputStream.write(buffer,0,len)处得到一个错误。 字节大小初始化为1024. 此代码适用于目前为止大小为166 mb的大多数文件。 Java堆大小是Xmx4096m Java版本解压的1.7
方法:
public static void extractObjects(byte[] buffer, AmazonS3 s3Client, ZipInputStream zis, ZipEntry entry)
throws IOException {
try {
while (entry != null) {
String fileName = entry.getName();
if (fileName == "lib") {
fileName = entry.getName();
}
boolean containsBackup = fileName.contains(doc.getDesiredFile());
if (containsBackup == true) {
System.out.println("A back up file was found");
formatSchemaName();
System.out.println("Extracting :" + app.getCurrentPacsId());
log.info("Extracting " + app.getCurrentPacsId() + ", compressed: " + entry.getCompressedSize() + " bytes, extracted: " + entry.getSize() + " bytes");
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
int len;
while ((len = zis.read(buffer)) >= 0)
{
outputStream.write(buffer, 0, len);
}
InputStream is = new ByteArrayInputStream(outputStream.toByteArray());
meta = new ObjectMetadata();
meta.setContentLength(outputStream.size());
fileName = app.getCurrentPacsId();
runDataConversion(is,s3Client,fileName);
is.close();
outputStream.close();
System.out.println("Unzip complete");
}
else{
System.out.println("No back up found");
}
entry = zis.getNextEntry();
}
zis.closeEntry();
zis.close();
} catch (AmazonServiceException e) {
log.error(e);
} catch (SdkClientException e) {
log.error(e);
}
}
错误
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:2271)
at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:118)
at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.java:93)
at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:153)
at com.amazonaws.image.DataMiner.extractObjects(DataMiner.java:112)
at com.amazonaws.image.DataMiner.downloadBucket(DataMiner.java:76)
at com.amazonaws.image.DataMiner.obtainConnection(DataMiner.java:58)
at com.amazonaws.image.DataMiner.main(DataMiner.java:208)
我发现通过增加运行命令与Java控制台中的Java堆空间解决了问题。但我认为你的权利仍然存在,我认为这个字节数组是无用的,正在填充不必要的浪费内存。我将重新访问这些代码,但目前它正在处理1GB大小的文件,但我敢打赌它可能会好很多。 –