okhttp方法上传图片和接收图片

1、用户端：okhttp方法的请求方式
private void okHttppost() {
  OkHttpClient okHttpClient = new OkHttpClient();    
 RequestBody body = new FormEncodingBuilder() //创建post请求体
.add("username", "zhangsan").add("pwd", "123456").build();
        Request request = new Request.Builder()
.url("http://192.168.11.17:8080/maWep/LoginServlet").post(body).build();
 try { //执行访问网络
Response response = okHttpClient.newCall(request).execute();
String s = new String(response.body().bytes());
} catch (IOException e) {e.printStackTrace(); }}
2、上传文件图片
final AssetManager.AssetInputStream ais =//转化为图片流
(AssetManager.AssetInputStream) getResources().openRawResource(R.raw.caocao);
new Thread() {public void run() { singImage(ais);}}.start();
private void singImage(InputStream ais) { try {
 URL url = new URL("http://192.168.11.17:8080/maWep/UpLoadImage");
 HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setDoInput(true); conn.setDoOutput(true);
conn.setConnectTimeout(30000);conn.setReadTimeout(30000);
conn.connect();
OutputStream out = conn.getOutputStream();
 byte[] bytes = new byte[1024];//将图片流写入到输出流中
 int len = 0; while ((len = ais.read(bytes)) != -1) {
out.write(bytes, 0, len);}
 out.flush(); out.close();conn.getInputStream();
 } catch (Exception e) {e.printStackTrace(); }}
3、服务器端：
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");PrintWriter out = response.getWriter();
 InputStream inputStream = request.getInputStream();//接收图片流
 String path=getServletContext().getRealPath("/image");//获取文件绝对路径
 FileOutputStream outputStream = //输出流用来存储图片
new FileOutputStream(new File(path,"/abc.jpg"));
byte [] b =new byte[1024]; int len=0;
 while((len=inputStream.read(b))!=-1){outputStream.write(b,0,len);}
inputStream.close();out.flush();out.close();}