php代码:

 "1", "message" => $_FILES ['uploadfile'] ['name'] );
	echo json_encode ( $array );
} else {
	$array = array ("code" => "0", "message" => "There was an error uploading the file, please try again!" . $_FILES ['uploadfile'] ['error'] );
	echo json_encode ( $array );
}
?>

java代码示例一:

package com.example.fileupload;
 
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
 
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
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.MultipartEntity;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.util.EntityUtils;
 
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
 
import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.RequestParams;
 
/**
 * 
 * ClassName:UploadActivity Function: TODO 测试上传文件，PHP服务器端接收 Reason: TODO ADD
 * REASON
 * 
 * @author Jerome Song
 * @version
 * @since Ver 1.1
 * @Date 2013 2013-4-20 上午8:53:44
 * 
 * @see
 */
public class UploadActivity extends Activity implements OnClickListener {
	private final String TAG = "UploadActivity";
 
	private static final String path = "/mnt/sdcard/Desert.jpg";
	private String uploadUrl = "http://192.168.1.102:8080/Android/testupload.php";
	private Button btnAsync, btnHttpClient, btnCommonPost;
	private AsyncHttpClient client;
 
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_upload);
		initView();
		client = new AsyncHttpClient();
	}
 
	private void initView() {
		btnCommonPost = (Button) findViewById(R.id.button1);
		btnHttpClient = (Button) findViewById(R.id.button2);
		btnAsync = (Button) findViewById(R.id.button3);
		btnCommonPost.setOnClickListener(this);
		btnHttpClient.setOnClickListener(this);
		btnAsync.setOnClickListener(this);
	}
 
	@Override
	public void onClick(View v) {
		long startTime = System.currentTimeMillis();
		String tag = null;
		try {
			switch (v.getId()) {
			case R.id.button1:
				upLoadByCommonPost();
				tag = "CommonPost====>";
				break;
			case R.id.button2:
				upLoadByHttpClient4();
				tag = "HttpClient====>";
				break;
			case R.id.button3:
				upLoadByAsyncHttpClient();
				tag = "AsyncHttpClient====>";
				break;
			default:
				break;
			}
		} catch (Exception e) {
			e.printStackTrace();
 
		}
		Log.i(TAG, tag + "wasteTime = "
				+ (System.currentTimeMillis() - startTime));
	}
 
	/**
	 * upLoadByAsyncHttpClient:由人造post上传
	 * 
	 * @return void
	 * @throws IOException
	 * @throws
	 * @since CodingExample　Ver 1.1
	 */
	private void upLoadByCommonPost() throws IOException {
		String end = "\r\n";
		String twoHyphens = "--";
		String boundary = "******";
		URL url = new URL(uploadUrl);
		HttpURLConnection httpURLConnection = (HttpURLConnection) url
				.openConnection();
		httpURLConnection.setChunkedStreamingMode(128 * 1024);// 128K
		// 允许输入输出流
		httpURLConnection.setDoInput(true);
		httpURLConnection.setDoOutput(true);
		httpURLConnection.setUseCaches(false);
		// 使用POST方法
		httpURLConnection.setRequestMethod("POST");
		httpURLConnection.setRequestProperty("Connection", "Keep-Alive");
		httpURLConnection.setRequestProperty("Charset", "UTF-8");
		httpURLConnection.setRequestProperty("Content-Type",
				"multipart/form-data;boundary=" + boundary);
 
		DataOutputStream dos = new DataOutputStream(
				httpURLConnection.getOutputStream());
		dos.writeBytes(twoHyphens + boundary + end);
		dos.writeBytes("Content-Disposition: form-data; name=\"uploadfile\"; filename=\""
				+ path.substring(path.lastIndexOf("/") + 1) + "\"" + end);
		dos.writeBytes(end);
 
		FileInputStream fis = new FileInputStream(path);
		byte[] buffer = new byte[8192]; // 8k
		int count = 0;
		// 读取文件
		while ((count = fis.read(buffer)) != -1) {
			dos.write(buffer, 0, count);
		}
		fis.close();
		dos.writeBytes(end);
		dos.writeBytes(twoHyphens + boundary + twoHyphens + end);
		dos.flush();
		InputStream is = httpURLConnection.getInputStream();
		InputStreamReader isr = new InputStreamReader(is, "utf-8");
		BufferedReader br = new BufferedReader(isr);
		String result = br.readLine();
		Log.i(TAG, result);
		dos.close();
		is.close();
	}
 
	/**
	 * upLoadByAsyncHttpClient:由HttpClient4上传
	 * 
	 * @return void
	 * @throws IOException
	 * @throws ClientProtocolException
	 * @throws
	 * @since CodingExample　Ver 1.1
	 */
	private void upLoadByHttpClient4() throws ClientProtocolException,
			IOException {
		HttpClient httpclient = new DefaultHttpClient();
		httpclient.getParams().setParameter(
				CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
		HttpPost httppost = new HttpPost(uploadUrl);
		File file = new File(path);
		MultipartEntity entity = new MultipartEntity();
		FileBody fileBody = new FileBody(file);
		entity.addPart("uploadfile", fileBody);
		httppost.setEntity(entity);
		HttpResponse response = httpclient.execute(httppost);
		HttpEntity resEntity = response.getEntity();
		if (resEntity != null) {
			Log.i(TAG, EntityUtils.toString(resEntity));
		}
		if (resEntity != null) {
			resEntity.consumeContent();
		}
		httpclient.getConnectionManager().shutdown();
	}
 
	/**
	 * upLoadByAsyncHttpClient:由AsyncHttpClient框架上传
	 * 
	 * @return void
	 * @throws FileNotFoundException
	 * @throws
	 * @since CodingExample　Ver 1.1
	 */
	private void upLoadByAsyncHttpClient() throws FileNotFoundException {
		RequestParams params = new RequestParams();
		params.put("uploadfile", new File(path));
		client.post(uploadUrl, params, new AsyncHttpResponseHandler() {
			@Override
			public void onSuccess(int arg0, String arg1) {
				super.onSuccess(arg0, arg1);
				Log.i(TAG, arg1);
			}
		});
	}
 
}
 

appache提供给的httpclient4

/**
     * Post方法传送文件和消息
     * 
     * @param url  连接的URL
     * @param queryString 请求参数串
     * @param files 上传的文件列表
     * @return 服务器返回的信息
     * @throws Exception
     */
    public String httpPostWithFile(String url, String queryString, List files) throws Exception {
        String responseData = null;
        URI tmpUri=new URI(url);
        URI uri = URIUtils.createURI(tmpUri.getScheme(), tmpUri.getHost(), tmpUri.getPort(), tmpUri.getPath(), 
                queryString, null);
        Log.i(TAG, "QHttpClient httpPostWithFile [1]  uri = "+uri.toURL());
        
        
        MultipartEntity mpEntity = new MultipartEntity();
        HttpPost httpPost = new HttpPost(uri);
        StringBody stringBody;
        FileBody fileBody;
        File targetFile;
        String filePath;
        FormBodyPart fbp;
        
        List queryParamList=QStrOperate.getQueryParamsList(queryString);
        for(NameValuePair queryParam:queryParamList){
            stringBody=new StringBody(queryParam.getValue(),Charset.forName("UTF-8"));
            fbp= new FormBodyPart(queryParam.getName(), stringBody);
            mpEntity.addPart(fbp);
//            Log.i(TAG, "------- "+queryParam.getName()+" = "+queryParam.getValue());
        }
        
        for (NameValuePair param : files) {
            filePath = param.getValue();
            targetFile= new File(filePath);
            fileBody = new FileBody(targetFile,"application/octet-stream");
            fbp= new FormBodyPart(param.getName(), fileBody);
            mpEntity.addPart(fbp);
            
        }
//        Log.i(TAG, "---------- Entity Content Type = "+mpEntity.getContentType());
        httpPost.setEntity(mpEntity);
        
        try {
            HttpResponse response=httpClient.execute(httpPost);
            Log.i(TAG, "QHttpClient httpPostWithFile [2] StatusLine = "+response.getStatusLine());
            responseData =EntityUtils.toString(response.getEntity());
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
          httpPost.abort();
        }
        Log.i(TAG, "QHttpClient httpPostWithFile [3] responseData = "+responseData);
        return responseData;
    }

结果监测:

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