关于php接收客户端上传文件的转载

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

Android上传文件到服务器，通常采用构造http协议的方法，模拟网页POST方法传输文件，服务器端可以采用JavaServlet或者PHP来接收要传输的文件。使用JavaServlet来接收文件的方法比较常见，在这里给大家介绍一个简单的服务器端使用PHP语言来接收文件的例子。

服务器端代码比较简单，接收传输过来的文件： <?php

$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'];

}

?>

手机客户端代码：

package com.figo.uploadfile;

import java.io.BufferedReader;

import java.io.DataOutputStream;

import java.io.FileInputStream;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URL;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

import android.widget.Toast;

public class UploadfileActivity extends Activity

{

// 要上传的文件路径，理论上可以传输任何文件，实际使用时根据需要处理

private String uploadFile = "/sdcard/testimg.jpg";

private String srcPath = "/sdcard/testimg.jpg";

// 服务器上接收文件的处理页面，这里根据需要换成自己的

private String actionUrl = "http://10.100.1.208/receive_file.php";

private TextView mText1;

private TextView mText2;

private Button mButton;

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

mText1 = (TextView) findViewById(R.id.myText2);

mText1.setText("文件路径：\n" + uploadFile);

mText2 = (TextView) findViewById(R.id.myText3);

mText2.setText("上传网址：\n" + actionUrl);

/* 设置mButton的onClick事件处理 */

mButton = (Button) findViewById(R.id.myButton);

mButton.setOnClickListener(new View.OnClickListener()

{

@Override

public void onClick(View v)

{

uploadFile(actionUrl);

}

});

}

/* 上传文件至Server，uploadUrl：接收文件的处理页面 */

private void uploadFile(String uploadUrl)

{

String end = "\r\n";

String twoHyphens = "--";

String boundary = "******";

try

{

URL url = new URL(uploadUrl);

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);

// 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=\"uploadedfile\"; filename=\""

+ srcPath.substring(srcPath.lastIndexOf("/") + 1)

+ "\""

+ end);

dos.writeBytes(end);

FileInputStream fis = new FileInputStream(srcPath);

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();

Toast.makeText(this, result, Toast.LENGTH_LONG).show();

dos.close();

is.close();

} catch (Exception e)

{

e.printStackTrace();

setTitle(e.getMessage());

}

}

}

在AndroidManifest.xml文件里添加网络访问权限：

<uses-permission android:name="android.permission.INTERNET" />