android 文件上传到服务器
public class UploadUtil {
private static final StringTAG ="uploadFile";
private static final int TIME_OUT =120 *1000; //超时时间
private static final StringCHARSET ="utf-8"; //设置编码
/**
* android上传文件到服务器
*
* @param file 需要上传的文件
* @param RequestURL 请求的rul
* @return 返回响应的内容
*/
public static StringuploadFile(File file, String RequestURL, String type) {
String result =null;
String BOUNDARY = UUID.randomUUID().toString(); //边界标识 随机生成
String PREFIX ="--", LINE_END ="\r\n";
String CONTENT_TYPE ="multipart/form-data"; //内容类型
String token = PreferencesUtils.getString(RxTool.getContext(), PREF_TOKEN);
try {
URL url =new URL(RequestURL);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(TIME_OUT);
conn.setConnectTimeout(TIME_OUT);
conn.addRequestProperty("Authorization-Device-Type", "android");
conn.addRequestProperty("Authorization-Token", token);
JSONObject body =new JSONObject();
body.put("filetype", type);
conn.setDoInput(true); //允许输入流
conn.setDoOutput(true); //允许输出流
conn.setUseCaches(false); //不允许使用缓存
conn.setRequestMethod("POST"); //请求方式
conn.setRequestProperty("Charset", CHARSET); //设置编码
conn.setRequestProperty("connection", "keep-alive");
conn.setRequestProperty("Content-Type", CONTENT_TYPE +";boundary=" + BOUNDARY);
if (file !=null) {
/**
* 当文件不为空，把文件包装并且上传
*/
DataOutputStream dos =new DataOutputStream(conn.getOutputStream());
StringBuffer sb =new StringBuffer();
sb.append(LINE_END);
//添加type参数
sb.append(PREFIX).append(BOUNDARY).append(LINE_END);//分界符
sb.append("Content-Disposition: form-data; name=\"" +"filetype" +"\"" + LINE_END);
sb.append("Content-Type: text/plain; charset=" +CHARSET + LINE_END);
sb.append("Content-Transfer-Encoding: 8bit" + LINE_END);
sb.append(LINE_END);
sb.append(type);
sb.append(LINE_END);//换行！
sb.append(PREFIX);
sb.append(BOUNDARY);
sb.append(LINE_END);
/**
* 这里重点注意：
* name里面的值为服务器端需要key 只有这个key 才可以得到对应的文件
* filename是文件的名字，包含后缀名的 比如:abc.png
*/
sb.append("Content-Disposition: form-data; name=\"file\"; filename=\"" + file.getName() +"\"" + LINE_END);
sb.append("Content-Type: application/octet-stream; charset=" +CHARSET + LINE_END);
sb.append(LINE_END);
dos.write(sb.toString().getBytes());
InputStream is =new FileInputStream(file);
byte[] bytes =new byte[1024];
int len =0;
while ((len = is.read(bytes)) != -1) {
dos.write(bytes, 0, len);
}
String content = String.valueOf(body);
dos.writeBytes(content);
is.close();
dos.write(LINE_END.getBytes());
byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END).getBytes();
dos.write(end_data);
dos.flush();
/**
* 获取响应码 200=成功
* 当响应成功，获取响应的流
*/
int res = conn.getResponseCode();
Log.e(TAG, "response code:" + res);
if (res ==200) {//返回成功
Log.e(TAG, "request success");
InputStream input = conn.getInputStream();
StringBuffer sb1 =new StringBuffer();
int ss;
while ((ss = input.read()) != -1) {
sb1.append((char) ss);
}
result = sb1.toString();
Log.e("得到的result", result !=null ? result :"");
if (type.equals("video")) {
//发送数据
//EventBus.getDefault().post(new LoadEvent(type, result));
}else if (type.equals("image")) {
//EventBus.getDefault().post(new LoadImageEvent(type, result));
}
}else {
Log.e(TAG, "request error");
}
}
}catch (MalformedURLException e) {
e.printStackTrace();
}catch (IOException e) {
e.printStackTrace();
}catch (JSONException e) {
e.printStackTrace();
}
return result;
}
}
