它基本上只是一个将文件（csv）发送到Web服务器的异步任务。
我收到状态码400 :(任何人都知道我做错了什么？
编辑：现在我收回状态码411，但是当我指定内容长度时，它会返回ClientProtocolException。
现在是我的代码：
UploadTask uploadtask;
public class UploadTask extends AsyncTask<Void, byte[], Boolean> {
HttpPost httppost;
@Override
protected Boolean doInBackground(Void... params) {
Boolean result = false;
String id = projectIDs.get((int) spinner.getSelectedItemId());
Log.i("TAG", id);
try {
l(send(String.valueOf(id), "http://" + site
+ "/restlet/position.csv?project=" + id,
"/csv.csv"));
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return result;
}
private void entity(String id, String file) throws JSONException,
UnsupportedEncodingException, FileNotFoundException {
// Add your data
File myFile = new File(Environment.getExternalStorageDirectory(),
file);
FileEntity fileEntity = new FileEntity(myFile, "multipart/form-data;");
fileEntity.setChunked(true);
long len = fileEntity.getContentLength();
httppost.getParams().setParameter("project", id);
httppost.setEntity(fileEntity);
//httppost.addHeader("Content-Length",String.valueOf(len));
httppost.setHeader("Content-Length", String.valueOf(len));
}
private String send(String id, String URL, String file)
throws ClientProtocolException, IOException, JSONException {
l(URL);
HttpResponse response = null;
httppost = new HttpPost(URL);
entity(id, file);
response = httpclient.execute(httppost);
Header[] head = response.getAllHeaders();
String str = String.valueOf(response.getStatusLine()
.getStatusCode());
response.getEntity().consumeContent();
return str;
}
}
答案 0 :(得分：7)
此代码用于将文件上传到Web服务器:)经过几个小时的挣扎我得到了它，不得不从apachi导入MultipartEntity，StringBody和FileBody
httppost = new HttpPost(URL);
MultipartEntity entity = new MultipartEntity();
entity.addPart("title", new StringBody("position.csv", Charset.forName("UTF-8")));
File myFile = new File(Environment.getExternalStorageDirectory(), file);
FileBody fileBody = new FileBody(myFile);
entity.addPart("file", fileBody);
httppost.setEntity(entity);
httppost.getParams().setParameter("project", id);
答案 1 :(得分：2)
要将文件上传到服务器，请参阅以下链接：
http://vikaskanani.wordpress.com/2011/01/11/android-upload-image-or-file-using-http-post-multi-part/
答案 2 :(得分：0)
在任何事情之前
1- 选择文件使用此选项或以任何方式选择它
https://github.com/iPaulPro/aFileChooser 只需导入它
2- 不要忘记将其添加到清单
<\uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
3- 别忘了在java代码中更改uri 和php代码中的文件夹名称
4- 只需复制并通过此代码，我将尝试并100％工作
爪哇
package com.example.uploadthestupidfile;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import com.ipaulpro.afilechooser.utils.FileUtils;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
@SuppressLint("NewApi")
public class MainActivity extends Activity
{
private static final int FILE_SELECT_CODE = 0;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
StrictMode.ThreadPolicy policy=new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("*/*");
intent.addCategory(Intent.CATEGORY_OPENABLE);
try {
startActivityForResult(
Intent.createChooser(intent, "Select a File to Upload"),
FILE_SELECT_CODE);
} catch (android.content.ActivityNotFoundException ex) {
// Potentially direct the user to the Market with a Dialog
Toast.makeText(this, "Please install a File Manager.",
Toast.LENGTH_SHORT).show();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case FILE_SELECT_CODE:
if (resultCode == RESULT_OK) {
// Get the Uri of the selected file
Uri uri = data.getData();
// Log.d(TAG, "File Uri: " + uri.toString());
// Get the path
String path = FileUtils.getPath(this, uri);
Toast.makeText(this,""+path,Toast.LENGTH_LONG).show();
try {
upload(path);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
Toast.makeText(this,"ErrorS",Toast.LENGTH_LONG).show();
}
// Log.d(TAG, "File Path: " + path);
// Get the file instance
// File file = new File(path);
// Initiate the upload
}
break;
}
super.onActivityResult(requestCode, resultCode, data);
}
public void upload(String selectedPath) throws Exception {
HttpURLConnection connection = null;
DataOutputStream outputStream = null;
DataInputStream inputStream = null;
String pathToOurFile = selectedPath;
String urlServer = "http://yoursite/upload_files.php";
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
FileInputStream fileInputStream = new FileInputStream(new File(
pathToOurFile));
URL url = new URL(urlServer);
connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setUseCaches(false);
connection.setRequestMethod("POST");
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);
outputStream = new DataOutputStream(connection.getOutputStream());
outputStream.writeBytes(twoHyphens + boundary + lineEnd);
outputStream
.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\""
+ pathToOurFile + "\"" + lineEnd);
outputStream.writeBytes(lineEnd);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
outputStream.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
outputStream.writeBytes(lineEnd);
outputStream.writeBytes(twoHyphens + boundary + twoHyphens
+ lineEnd);
int serverResponseCode = connection.getResponseCode();
String serverResponseMessage = connection.getResponseMessage();
fileInputStream.close();
outputStream.flush();
outputStream.close();
}
}
PHP upload_files.php
<?php
$target_path = "uploadedimages/"; //here folder name
$target_path = $target_path . basename($_FILES['uploadedfile']['name']);
error_log("Upload File >>" . $target_path . $_FILES['error'] . " \r\n", 3,
"Log.log");
error_log("Upload File >>" . basename($_FILES['uploadedfile']['name']) . " \r\n",
3, "Log.log");
if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
echo "The file " . basename($_FILES['uploadedfile']['name']) .
" has been uploaded";
} else {
echo "There was an error uploading the file, please try again!";
}
?>