android上传文件和参数到web服务器，php接收并保存

is‘心尘

12 年前

由于工作需要，学习了下android端上传文件到web服务器，服务器端使用php。
网上很多方法中并没有介绍参数如何和文件同时传送给服务器，本文给出了方法。

下面http请求中，实际生成的头部如下所示：
Host: example.com
Content-type: multipart/form-data, boundary=ahhjifeohiawf
Content-Length: $requestlen

–ahhjifeohiawf
content-disposition: form-data; name=”param1″

heihei
–ahhjifeohiawf
content-disposition: form-data; name=”param2″

haha
–ahhjifeohiawf
content-disposition: form-data; name=”uploadfile”; filename=”android.pdf”

(文件数据略)
–ahhjifeohiawf–

boundary是标示符，要保证它的值不出现在要传送的数据中，详细请看代码注释。

下面是详细android端和php端的代码

Upload.java

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package cn.beyondcompare.uploader;

import java.io.BufferedReader;

import java.io.DataOutputStream;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.ProtocolException;

import java.net.URL;

import org.apache.http.HttpStatus;

import android.content.Context;

import android.util.Log;

public class UploadTools {

private static final String TAG = "[UploadTools]:";

private Context context = null;

private String serverUrl = null;

private String param1 = null;

private String param2 = null;

private String filePath = null;

private String fileName = null;

private static final int DEFAULT_BUFF_SIZE = 8192;

private static final int READ_TIMEOUT = 15000;

private static final int CONNECTION_TIMEOUT = 15000;

private UploadListener uploadListener = null;

public UploadTools(Context context, String url, String param1, String param2, String filePath, String fileName) {

this.context = context;

this.serverUrl = url;

this.param1 = param1;

this.param2 = param2;

this.filePath = filePath;

this.fileName = fileName;

}

public void setUploadListener(UploadListener listener) {

this.uploadListener = listener;

}

public void uploadFile() throws MalformedURLException, ProtocolException, FileNotFoundException, IOException {

String lineEnd = "\r\n";

String twoHyphens = "--";

String boundary = "ahhjifeohiawf";// 各个参数的间隔符，可自定义，但不能与发送内容有重复部分

if (context == null || serverUrl == null || param1 == null || param2 == null || filePath == null || fileName == null) {

return;

}

URL url = new URL(serverUrl);

HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();

// 设置每次传输的流大小，可以有效防止手机因为内存不足崩溃

// 此方法用于在预先不知道内容长度时启用没有进行内部缓冲的 HTTP 请求正文的流。

httpURLConnection.setChunkedStreamingMode(128 * 1024);// 128K

// 允许输入输出流

httpURLConnection.setDoInput(true);

httpURLConnection.setDoOutput(true);

httpURLConnection.setUseCaches(false);

// 超时时间设置

httpURLConnection.setReadTimeout(READ_TIMEOUT);

httpURLConnection.setConnectTimeout(CONNECTION_TIMEOUT);

// 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());

// 发送jsonStr

dos.writeBytes(twoHyphens + boundary + lineEnd);

dos.writeBytes("Content-Disposition: form-data; name=\"param1\"" + lineEnd);

dos.writeBytes(lineEnd);

dos.writeBytes(param1);

dos.writeBytes(lineEnd);

// 发送acrion

dos.writeBytes(twoHyphens + boundary + lineEnd);

dos.writeBytes("Content-Disposition: form-data; name=\"param2\"" + lineEnd);

dos.writeBytes(lineEnd);

dos.writeBytes(param2);

dos.writeBytes(lineEnd);

// 发送文件

dos.writeBytes(twoHyphens + boundary + lineEnd);

dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\"; filename=\"" + fileName + "\"" + lineEnd);

dos.writeBytes(lineEnd);

String srcPath = filePath + fileName;

FileInputStream fis = new FileInputStream(srcPath);

byte[] buffer = new byte[DEFAULT_BUFF_SIZE]; // 8k

int counter = 0;

int count = 0;

// 读取文件

while ((count = fis.read(buffer)) != -1) {

dos.write(buffer, 0, count);

counter += count;

if (uploadListener != null) {

uploadListener.onUploadProcess(counter);

}

fis.close();

dos.writeBytes(lineEnd);

dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);// 最后多出"--"作为结束

dos.flush();

if (httpURLConnection.getResponseCode() == HttpStatus.SC_OK) {

BufferedReader reader = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream()), 8192);// 8k

StringBuilder sb = new StringBuilder();

String line = null;

try {

while ((line = reader.readLine()) != null) {

sb.append(line + "\n");

}

} catch (IOException e) {

e.printStackTrace();

}

if (uploadListener != null) {

uploadListener.onUploadFinished(sb.toString());

}

} else {

Log.d(TAG, "Http request failed!");

if (uploadListener != null) {

uploadListener.onUploadFinished("Http request failed!");

}

if (httpURLConnection != null) {

httpURLConnection.disconnect();

}

UploadListener.java

package cn.beyondcompare.uploader;

public interface UploadListener {

public void onUploadProcess(int size);

public void onUploadFinished(String msg);

MainActivity.java

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package cn.beyondcompare.uploader;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.net.MalformedURLException;

import java.net.ProtocolException;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.app.Activity;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.ProgressBar;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends Activity {

private TextView txtVServerUrl = null;

private TextView txtVFilePath = null;

private Button btnUpload = null;

private ProgressBar progressBar = null;

private String filePath = "/mnt/sdcard/";

private String fileName = "android.pdf";

private String serverUrl = "http://10.0.2.2/upload.php";

private Handler handler = new Handler() {

@Override

public void handleMessage(Message msg) {

if (msg.what == 0) {

progressBar.setProgress(msg.arg1);

} else if (msg.what == 1) {

Bundle b = msg.getData();

if (b == null) {

return;

}

String str = b.getString("msg");

Toast.makeText(MainActivity.this, str, Toast.LENGTH_LONG).show();

}

};

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

txtVServerUrl = (TextView) findViewById(R.id.ID_TxtV_ServerUrl);

txtVServerUrl.setText("serverUrl:" + serverUrl);

txtVFilePath = (TextView) findViewById(R.id.ID_TxtV_FilePath);

txtVFilePath.setText("filePath:" + filePath + fileName);

progressBar = (ProgressBar) findViewById(R.id.ID_PBar);

File file = new File(filePath, fileName);

progressBar.setMax((int) file.length());

btnUpload = (Button) findViewById(R.id.ID_Btn_Upload);

btnUpload.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

final UploadTools uploadTools = new UploadTools(MainActivity.this, serverUrl, "heihei", "haha", filePath,

fileName);

uploadTools.setUploadListener(new UploadListener() {

@Override

public void onUploadProcess(int size) {

Message msg = new Message();

msg.what = 0;

msg.arg1 = size;

handler.sendMessage(msg);

}

@Override

public void onUploadFinished(String msg) {

Message msg1 = new Message();

msg1.what = 1;

Bundle b = new Bundle();

b.putString("msg", msg);

msg1.setData(b);

handler.sendMessage(msg1);

}

});

new Thread() {

@Override

public void run() {

try {

uploadTools.uploadFile();

} catch (MalformedURLException e) {

e.printStackTrace();

} catch (ProtocolException e) {

e.printStackTrace();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}.start();

}

});

}

php端代码比较简单：
upload.php

< ?php

echo "param1=".$_POST['param1'].chr(13).chr(10);

echo "param2=".$_POST['param2'].chr(13).chr(10);

$target_path = "./upload/";//接收文件目录

$target_path = $target_path . basename( $_FILES['uploadedfile']['name']);

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!" . $_FILES['uploadedfile']['error'];

}

参考：

http://blog.csdn.net/sxwyf248/article/details/7012496

http://blog.csdn.net/sxwyf248/article/details/7012758

http://tkxxd.net/thread-307-1-1.html