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我試圖通過HTTPUrlconnection發佈xlsx文件,在接收端我得到的文件,但同時在MS Excel中打開它說該文件已損壞,需要修復。我的代碼片段爲多部分後xlsx的多部分文章通過HTTPUrlConnection被破壞
class MultipartUtility {
private final Logger log = getLogger(MultipartUtility.class.getName());
private static final String CRLF = "\r\n";
private static final String CHARSET = "UTF-8";
private static final int CONNECT_TIMEOUT = 1500000;
private static final int READ_TIMEOUT = 1000000;
private final HttpURLConnection connection;
private final OutputStream outputStream;
private final PrintWriter writer;
private final String boundary;
// for log formatting only
private final URL url;
private final long start;
public MultipartUtility(final String strUrl) throws IOException {
start = currentTimeMillis();
URL url = new URL(strUrl);
this.url = url;
boundary = "---------------------------" + currentTimeMillis();
connection = (HttpURLConnection) url.openConnection();
connection.setConnectTimeout(CONNECT_TIMEOUT);
connection.setReadTimeout(READ_TIMEOUT);
connection.setRequestMethod("POST");
connection.setRequestProperty("Accept-Charset", CHARSET);
connection.setRequestProperty("Content-Type","multipart/form-data; boundary=" + boundary);
connection.setUseCaches(false);
connection.setDoInput(true);
connection.setDoOutput(true);
outputStream = connection.getOutputStream();
writer = new PrintWriter(new OutputStreamWriter(outputStream, CHARSET),true);
}
public void addFilePart(final String filePath)throws IOException {
String fieldName = "content";
File uploadFile = new File(filePath);
final String fileName = uploadFile.getName();
writer.append("--").append(boundary).append(CRLF)
.append("Content-Disposition: form-data; name=\"")
.append(fieldName).append("\"; filename=\"").append(fileName)
.append("\"").append(CRLF).append("Content-Type: ")
.append(guessContentTypeFromName(fileName)).append(CRLF)
.append("Content-Transfer-Encoding: binary").append(CRLF)
.append(CRLF);
writer.flush();
outputStream.flush();
try (final FileInputStream inputStream = new FileInputStream(uploadFile);) {
final byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
outputStream.flush();
}
writer.append(CRLF);
}
public HashMap<Object, Object> finish() throws IOException {
writer.append(CRLF).append("--").append(boundary).append("--").append(CRLF);
writer.close();
final int status = connection.getResponseCode();
if (status != HTTP_OK) {
throw new IOException(format("{0} failed with HTTP status: {1}",url, status));
}
try (final InputStream is = connection.getInputStream()) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
String sResponse;
StringBuilder responseBuilder = new StringBuilder();
while ((sResponse = reader.readLine()) != null) {
responseBuilder = responseBuilder.append(sResponse);
}
HashMap respMap = new HashMap();
respMap.put("RESP_MSG", responseBuilder.toString());
respMap.put("RESP_CODE", status);
respMap.put("RESP_SIZE", responseBuilder.toString().length());
log.log(INFO,format("{0} took {4} ms", url,(currentTimeMillis() - start)));
log.log(INFO,"status::::::"+status);
return respMap;
} finally {
connection.disconnect();
}
}
}
你給的解決方法工作正常。非常感謝。 –