Java上传带图片的Http请求详解编程语言

static public String post(String murl, HashMap String, String map, String path) throws Exception { File file = new File(path); String filename = path.substring(path.lastIndexOf("/")); // String filename = Str.md5(path); StringBuilder sb = new StringBuilder(); if (null != map) { for (Map.Entry String, String entry : map.entrySet()) { sb.append("--" + BOUNDARY + "/r/n"); sb.append("Content-Disposition: form-data; name=/"" + entry.getKey() + "/"" + "/r/n"); sb.append("/r/n"); sb.append(entry.getValue() + "/r/n"); sb.append("--" + BOUNDARY + "/r/n"); sb.append("Content-Disposition: form-data; name=/"image/"; filename=/"" + filename + "/"" + "/r/n"); sb.append("Content-Type: image/pjpeg" + "/r/n"); sb.append("/r/n"); byte[] before = sb.toString().getBytes("UTF-8"); byte[] after = ("/r/n--" + BOUNDARY + "--/r/n").getBytes("UTF-8"); URL url = new URL(murl); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("POST"); conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY); conn.setRequestProperty("Authorization", "Bearer " + Douban.getAccessToken()); conn.setRequestProperty("Content-Length", String.valueOf(before.length + file.length() + after.length)); conn.setRequestProperty("HOST", url.getHost()); conn.setDoOutput(true); OutputStream out = conn.getOutputStream(); InputStream in = new FileInputStream(file); out.write(before); byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) != -1) out.write(buf, 0, len); out.write(after); in.close(); out.close(); MLog.e(inputStream2String(conn.getInputStream()) + ""); return conn.getContent().toString(); /** * is转String * @param in * @return * @throws IOException public static String inputStream2String(InputStream in) throws IOException { StringBuffer out = new StringBuffer(); byte[] b = new byte[4096]; for (int n; (n = in.read(b)) != -1;) { out.append(new String(b, 0, n)); return out.toString(); }

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