Android酱油笔记之上传文件到php web

1.搭建LAMP环境

2.upload_file.php源码如下

<?php
$file_path = "/var/test/upload/";
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/pjpeg"))
&& ($_FILES["file"]["size"] < 20000))
{
if ($_FILES["file"]["error"] > 0){
echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
}else{
echo "Upload: " . $_FILES["file"]["name"] . "<br />";
echo "Type: " . $_FILES["file"]["type"] . "<br />";
echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";

if (file_exists($file_path . $_FILES["file"]["name"])){
echo $_FILES["file"]["name"] . " already exists. ";
}else{
move_uploaded_file($_FILES["file"]["tmp_name"],$file_path . $_FILES["file"]["name"]);
echo "Stored in: " . $file_path . $_FILES["file"]["name"];
}
}
}else{
echo "Invalid file";
}
?>

3.Android端源码如下

package com.others.php;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

@SuppressLint("HandlerLeak")
public class TestPHPUploadActivity extends Activity{

private String filePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/gxtest";
private TextView textView;
private Button button;
private String uploadUrl = "http://192.168.1.106/upload_file.php";

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

File dir = new File(filePath);
if(!dir.exists()){
dir.mkdirs();
}
File file = new File(filePath+"/wer.jpg");
if(!file.exists()){
try {
InputStream is = getAssets().open("wer.jpg");
FileOutputStream out = new FileOutputStream(filePath+"/wer.jpg");
byte[] buffer = new byte[1024];
int len;
while((len = is.read(buffer))!=-1)
{
out.write(buffer, 0, len);
}
out.flush();
is.close();
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
filePath = filePath+"/wer.jpg";

LinearLayout lin = new LinearLayout(this);
lin.setOrientation(LinearLayout.VERTICAL);
textView = new TextView(this);
textView.setText("文件路径："+ filePath);
lin.addView(textView);

button = new Button(this);
button.setText("开始上传");
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
new Thread(new Runnable() {
@Override
public void run() {
uploadFile(uploadUrl, filePath);
}
}).start();
}
});
lin.addView(button);

setContentView(lin);
}

/* 上传文件至Server，uploadUrl：接收文件的处理页面 */
private void uploadFile(String uploadUrl,String filePath)
{
String end = "\r\n";
String sepa1 = "--";
String sepa2 = "--";
String sepa = sepa1+sepa2;
String identity = Math.random()+"";
try{
URL url = new URL(uploadUrl);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setChunkedStreamingMode(10 * 1024);// 10K
// 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("Content-Type"," multipart/form-data; boundary="+sepa1+identity);
DataOutputStream dos = new DataOutputStream(httpURLConnection.getOutputStream());
dos.writeBytes(sepa+identity+end);
dos.writeBytes("Content-Disposition: form-data; name=\"file\"; filename=\"wer.jpg\"" + end);
dos.writeBytes("Content-Type: image/pjpeg" + end);
dos.writeBytes(end);
FileInputStream fis = new FileInputStream(filePath);
byte[] buffer = new byte[1024]; // 1k
int count = 0;
// 读取文件
while ((count = fis.read(buffer)) != -1)
{
httpURLConnection.getOutputStream().write(buffer, 0, count);
}
fis.close();

dos.writeBytes(end);
dos.writeBytes(sepa+identity+end);
dos.writeBytes("Content-Disposition: form-data; name=\"submit\"" + end);
dos.writeBytes("Submit" +end);
dos.writeBytes(sepa+identity+sepa2+end);
httpURLConnection.getOutputStream().flush();

InputStream is = httpURLConnection.getInputStream();
InputStreamReader isr = new InputStreamReader(is, "utf-8");
BufferedReader br = new BufferedReader(isr);
String result = br.readLine();

Bundle b = new Bundle();
b.putString("value", result);
Message mes = new Message();
mes.setData(b);
handler.sendMessage(mes);

httpURLConnection.getOutputStream().close();
is.close();

} catch (Exception e)  {
e.printStackTrace();
}
}

private Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
String result = msg.getData().getString("value");
Toast.makeText(TestPHPUploadActivity.this, result, Toast.LENGTH_LONG).show();
}
};

}

4.另外，你也可以利用html形式抓包实现，html代码如下

<form action="upload_file.php" method="post"enctype="multipart/form-data">
<label for="file">Filename:</label>
<input type="file" name="file" id="file" />
<br />
<input type="submit" name="submit" value="Submit" />
</form>

5.其他事项可参考HTTP的相关协议，如果不足之处，劳架指出，谢谢

注意：

1.Android端需要权限如下

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

2.web端需要留意上传所在目录的权限