java - 在java中下载box文件

Question

当我下载文件时，它总是抛出这个异常:

org.apache.http.ConnectionClosedException:Content-Length 分隔消息正文过早结束(预期:210846；收到:0

我的代码:

String fileid=attachment.getBoxfileid();
String sha1=attachment.getSha1();
String filename=attachment.getFilename();

final String clientid=ToolsUtils.getBOXcomConfig().get(ToolsUtils.CLIENTID);
final String clientsecret=ToolsUtils.getBOXcomConfig().get(ToolsUtils.CLIENTSECRET);
BoxOAuthToken authToken=this.boxuploadService.getTokenByClientId(clientid);
BoxClient boxClient=new BoxClient(clientid,clientsecret,null,null,new BoxConfigBuilder().build());
boxClient.authenticate(authToken);
boxClient.addOAuthRefreshListener(new OAuthRefreshListener() {

    @Override
    public void onRefresh(IAuthData authData) {
    boxuploadService.updateBoxAccessToken(clientid,authData.getAccessToken(),authData.getRefreshToken());
            }
    });
BoxDefaultRequestObject obj = new BoxDefaultRequestObject();
obj.getRequestExtras().setIfMatch(sha1);
DownloadFileRequest downloadFileRequest=new DownloadFileRequest(new     BoxConfigBuilder().build(), new BoxJSONParser(new BoxResourceHub()), fileid, obj);
out = response.getOutputStream();
InputStream inputStream=boxClient.getFilesManager().downloadFile(fileid, obj);
byte[] buffer = new byte[1024];
response.setContentType("application/octet-stream" );
response.setHeader( "Content-Disposition", "attachment; filename=\"" + filename + "\"" );

while((readCount = inputStream.read(buffer)) > 0) {
    out.write(buffer, 0, readCount);
}

out.flush();

Answer 1

看起来读取部分出错了，调用downloadFile(fildId, requestObject)时有没有捕获异常？

我的代码如下所示:

try {

    BoxDefaultRequestObject requestObject = new BoxDefaultRequestObject();

    inputStream = boxClient.getFilesManager().downloadFile(fileId,
            requestObject);

} catch (BoxRestException e) {
    e.printStackTrace();
} catch (BoxServerException e) {
    e.printStackTrace();
} catch (AuthFatalFailureException e) {
    e.printStackTrace();
}

通过这种方式可以检查是否正确生成了InputStream对象。