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想请问下android如何同时上传文件和键值对？ HttpPost post = new HttpPost(
"http://veikr.com/myupload/upload.php");
File file = new File("/mnt/sdcard/infor.txt");
MultipartEntity multipart = new MultipartEntity();
multipart.addPart("name", new StringBody("veikr.com"));
multipart.addPart("file", new FileBody(file));
HttpClient client = new DefaultHttpClient();
post.setEntity(multipart);
HttpResponse response = client.execute(post);
return response;
我试过用上边的方式给服务器上传。但是服务器接收不到。 |
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没人么… 自己顶一下…
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没用过，帮顶一下吧
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我试了没有问题啊。
你检查一下是不是因为文件不存在或者没有访问权限导致异常。 或者是服务器没有处理好？ |
 30分 |
如果文件不存在，服务器就会接收到不完整的数据。
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文件存在的…但是服务器那边接受不到。好像这个方法服务器那边要额外用一个jar包是么？还是正常接收就行。 |
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我的测试服务器程序不是用java实现的。这些数据都是通过http协议传送的，和服务端用什么语言实现没有关系。 |
20分 |
建议楼主是用afinal框架，他的post可以提交文件和表单数据。
这个是我改进的一个文件、表格数据提交post：
package com.minephone.network;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Map;
import android.os.AsyncTask;
import android.util.Log;
/**
* 文件上传
*
*
HashMap<String, String> params = new HashMap<String, String>();
params.put("page", "1");
params.put("name", "2");
HashMap<String, File> files = new HashMap<String, File>();
files.put("1.apk","/mnt/sdcard/1.apk"));
files.put("name", new File(Environment.getExternalStorageDirectory().getAbsolutePath(),"6.jpg"));
new fileupload("http://192.168.191.1:8081/uploadtest/servlet/upload2",params, files,MainActivity.this).execute("");
* @author ping
*
*/
public class FileUpload extends AsyncTask {
public static final String TAG = "FileUpload";
String actionUrl;
Map<String, String> params;
Map<String, File> files;
UploadListener listener;
public interface UploadListener {
public void onUploadEnd(boolean success,String object);
}
public FileUpload(String actionUrl, Map<String, String> params,Map<String, File> files,UploadListener listener) {
Log.i(TAG,"upload!");
this.actionUrl = actionUrl;
this.params = params;
this.files = files;
this.listener = listener;
}
@Override
protected String doInBackground(Object... arg0) {
String reslut = null;
try {
String BOUNDARY = java.util.UUID.randomUUID().toString();
String PREFIX = "--", LINEND = "\r\n";
String MULTIPART_FROM_DATA = "multipart/form-data";
String CHARSET = "UTF-8";
URL uri = new URL(actionUrl);
HttpURLConnection conn = (HttpURLConnection) uri.openConnection();
conn.setReadTimeout(5 * 1000);
conn.setDoInput(true);// 允许输入
conn.setDoOutput(true);// 允许输出
conn.setUseCaches(false);
conn.setRequestMethod("POST"); // Post方式
conn.setRequestProperty("connection", "keep-alive");
conn.setRequestProperty("Charsert", "UTF-8");
conn.setRequestProperty("Content-Type", MULTIPART_FROM_DATA + ";boundary=" + BOUNDARY);
// 首先组拼文本类型的参数
StringBuilder sb = new StringBuilder();
for (Map.Entry<String, String> entry : params.entrySet()) {
sb.append(PREFIX);
sb.append(BOUNDARY);
sb.append(LINEND);
sb.append("Content-Disposition: form-data; name="" + entry.getKey() + """ + LINEND);
sb.append("Content-Type: text/plain; charset=" + CHARSET + LINEND);
sb.append("Content-Transfer-Encoding: 8bit" + LINEND);
sb.append(LINEND);
sb.append(entry.getValue());
sb.append(LINEND);
}
DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());
outStream.write(sb.toString().getBytes());
// 发送文件数据
if (files != null)
// for (Map.Entry<String, File> file : files.entrySet()) {
for (String key : files.keySet()) {
StringBuilder sb1 = new StringBuilder();
sb1.append(PREFIX);
sb1.append(BOUNDARY);
sb1.append(LINEND);
sb1.append("Content-Disposition: form-data; name="file"; filename="" + key + """ + LINEND);
sb1.append("Content-Type: multipart/form-data; charset=" + CHARSET + LINEND);
sb1.append(LINEND);
outStream.write(sb1.toString().getBytes());
File valuefile = files.get(key);
InputStream is = new FileInputStream(valuefile);
byte[] buffer = new byte[1024];
int len = 0;
while ((len = is.read(buffer)) != -1) {
outStream.write(buffer, 0, len);
}
is.close();
outStream.write(LINEND.getBytes());
}
// 请求结束标志
byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes();
outStream.write(end_data);
outStream.flush();
// 得到响应码
// success = conn.getResponseCode()==200;
InputStream in = conn.getInputStream();
InputStreamReader isReader = new InputStreamReader(in);
BufferedReader bufReader = new BufferedReader(isReader);
String line = null;
reslut = "";
while ((line = bufReader.readLine()) != null)
reslut += line;
outStream.close();
conn.disconnect();
} catch (Exception e) {
e.printStackTrace();
}
return reslut;
}
@Override
protected void onPreExecute() {
//onPreExecute方法用于在执行后台任务前做一些UI操作
Log.i(TAG, "onPreExecute() called");
}
@Override
protected void onCancelled() {
//取消操作
Log.i(TAG, "onCancelled() called");
if (listener!=null) {
listener.onUploadEnd(false, null);
}
}
@Override
protected void onPostExecute(Object result) {
//onPostExecute方法用于在执行完后台任务后更新UI,显示结果
Log.i(TAG, "onPostExecute(Result result) called");
if (listener!=null) {
if (result==null) {
listener.onUploadEnd(false, null);
} else {
listener.onUploadEnd(true, result.toString());
}
}
}
@Override
protected void onProgressUpdate(Object... values) {
//onProgressUpdate方法用于更新进度信息
Log.i(TAG, "onProgressUpdate() called");
}
}
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