如何发送pdf/word/文本文件到服务器

这是我的代码。但是我的服务器没有得到正确的数据我试图通过httpclient发送文件我还读到http客户端在6.0之后被弃用那么我应该用什么方法呢任何人都可以发布他们的工作/运行代码我可以通过android手机发送word/pdf/text文件到php服务器

package com.example.sendfiletoserver;
import java.io.File;
import java.io.IOException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.DefaultHttpClient;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;

public class SendFileToServer extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_send_file_to_server);
        new postFileAsync().execute();
    }
    private void uploadFile() throws ClientProtocolException, IOException {
        String file=Environment.getExternalStorageDirectory().getAbsolutePath()+"/Test.pdf";
        Log.d("Mayur", ""+file);
        HttpClient httpclient=new DefaultHttpClient();
        HttpPost post=new HttpPost("<My_address>");         //My server address
        File f=new File(file);
        FileBody filebody=new FileBody(f);
        MultipartEntity mentity=new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
        mentity.addPart("file", filebody);
        post.setEntity(mentity);
        HttpResponse responce=httpclient.execute(post);
        HttpEntity entity=responce.getEntity();
    }
    public class postFileAsync extends AsyncTask<Void, Void, Void> {
//      ProgressDialog pd;
        @Override
        protected void onPreExecute() {
            // TODO Auto-generated method stub
//          pd = new ProgressDialog(SendFileToServer.this);
//          pd.setCancelable(false);
//          pd.setMessage("Uploading File");
//          pd.show();
        }
        @Override
        protected Void doInBackground(Void... params) {
            // TODO Auto-generated method stub
            try {
                uploadFile();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            return null;
        }
        @Override
        protected void onPostExecute(Void result) {
            // TODO Auto-generated method stub
//          pd.dismiss();
        }
    }
}

<?php
// if text data was posted
if ($_POST) {
    print_r($_POST);
}
// if a file was posted
else if ($_FILES) {
    $file         = $_FILES['file'];
    $fileContents = file_get_contents($file["tmp_name"]);
    print_r($fileContents);
}
?>

我对php一无所知所以如果有可以给我的PHP代码来帮助我。我甚至不知道我的代码是否正确

提前感谢您