Java 中，有时需要使用HttpURLConnection 模拟浏览器发送http请求，那么如何获取HttpURLConnection 中的响应体呢？
Java代码
- private static byte[] connection(HttpURLConnection huc, byte[] sendBytes,
- String mode) throws Exception {
- if (mode.equalsIgnoreCase("POST") && sendBytes != null) {
- huc.getOutputStream().write(sendBytes);
- huc.getOutputStream().flush();
- huc.getOutputStream().close();
- }
- int resCode = huc.getResponseCode();
- if (resCode == HttpURLConnection.HTTP_OK) {
- int contentLength = huc.getContentLength();
- if (contentLength > 0) {
- //
- System.out.println("httputil,contentLength:"+contentLength);
- // return readData(huc);
- return readDataFromLength(huc, contentLength);
- } else {
- return readData(huc);
- }
- }
- return null;
- }
- private static byte[] readData(HttpURLConnection huc) throws Exception {
- InputStream in = huc.getInputStream();
- return FileUtils.readBytes(in);
- }
- private static byte[] readDataFromLength(HttpURLConnection huc,
- int contentLength) throws Exception {
- InputStream in = huc.getInputStream();
- BufferedInputStream bis = new BufferedInputStream(in);
- // 数据字节数组
- byte[] receData = new byte[contentLength];
- int readLength = 0;
- // 数据数组偏移量
- int offset = 0;
- readLength = bis.read(receData, offset, contentLength);
- // 已读取的长度
- int readAlreadyLength = readLength;
- while (readAlreadyLength < contentLength) {
- readLength = bis.read(receData, readAlreadyLength, contentLength-readAlreadyLength);
- readAlreadyLength = readAlreadyLength + readLength;
- }
- return receData;
- }
