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Java 使用Android将文件上载到PHP脚本_Java_Android - Fatal编程技术网

Java 使用Android将文件上载到PHP脚本

Java 使用Android将文件上载到PHP脚本,java,android,Java,Android,我想上传一个文件到PHP脚本。上传似乎工作正常,它正在发送数据。但是每次PHP脚本都告诉我,$\u文件是空的。。。我不知道我做错了什么。。知道我的代码有什么问题吗 import java.io.DataOutputStream; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.

我想上传一个文件到PHP脚本。上传似乎工作正常,它正在发送数据。但是每次PHP脚本都告诉我,$\u文件是空的。。。我不知道我做错了什么。。知道我的代码有什么问题吗

import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Random;

import android.content.Context;
import android.net.Uri;
import android.os.AsyncTask;
import android.provider.Settings.Secure;
import android.util.Log;

public class Upload extends AsyncTask<Object, Integer, String> {
    URL connectURL;
    String responseString;
    String usernameString;
    Context con;
    String iFileName;
    byte[] dataToServer;
    FileInputStream fileInputStream = null;

    void Sending() {

        String lineEnd = "\r\n";
        String twoHyphens = "--";
        String boundary = "*****";
        String Tag = "Info";
        try {
            Log.e(Tag, "Starting Http File Sending to URL");

            // Open a HTTP connection to the URL
            HttpURLConnection conn = (HttpURLConnection) connectURL.openConnection();

            // Allow Inputs
            conn.setDoInput(true);

            // Allow Outputs
            conn.setDoOutput(true);

            // Don't use a cached copy.
            conn.setUseCaches(false);

            // Use a post method.
            conn.setRequestMethod("POST");

            conn.setRequestProperty("Connection", "Keep-Alive");

            conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);

            DataOutputStream dos = new DataOutputStream(conn.getOutputStream());

            Log.d("Info", iFileName);

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

            Log.e(Tag, "Headers are written");

            // create a buffer of maximum size
            int bytesAvailable = fileInputStream.available();

            int maxBufferSize = 1024;
            int bufferSize = Math.min(bytesAvailable, maxBufferSize);
            byte[] buffer = new byte[bufferSize];

            // read file and write it into form...
            int bytesRead = fileInputStream.read(buffer, 0, bufferSize);

            while (bytesRead > 0) {
                Log.e(Tag, "sending...");
                dos.write(buffer, 0, bufferSize);
                bytesAvailable = fileInputStream.available();
                bufferSize = Math.min(bytesAvailable, maxBufferSize);
                bytesRead = fileInputStream.read(buffer, 0, bufferSize);
            }
            dos.writeBytes(lineEnd);
            dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);

            // close streams
            fileInputStream.close();

            dos.flush();

            Log.e(Tag, "File Sent, Response: " + String.valueOf(conn.getResponseCode()));

            InputStream is = conn.getInputStream();

            // retrieve the response from server
            int ch;

            StringBuffer b = new StringBuffer();
            while ((ch = is.read()) != -1) {
                b.append((char) ch);
            }
            String s = b.toString();
            Log.i("Response", s);
            dos.close();

            String aidString = Secure.getString(con.getContentResolver(), Secure.ANDROID_ID);
            //new BackgroundPost(new OnTaskComplete() {}).execute(usernameString, s, "0", "0", aidString, "");
        } catch (MalformedURLException ex) {
            Log.e(Tag, "URL error: " + ex.getMessage(), ex);
        }

        catch (IOException ioe) {
            Log.e(Tag, "IO error: " + ioe.getMessage(), ioe);
        }
    }

    public void run() {
        // TODO Auto-generated method stub
    }

    @Override
    protected String doInBackground(Object... params) {
        try {
            connectURL = new URL(conf.d + "upload.php");
            usernameString = String.valueOf(params[0]);
            con = (Context)params[1];
            Random random = new Random(); 
            String u = (String) params[2];
            Log.d("Info","u: " + u);
            iFileName = random.nextInt() +  "." + u.substring(u.lastIndexOf(".")+1);
            Log.d("Info","filename: " + iFileName);
            fileInputStream = new FileInputStream(u);
            Sending();

        } catch (Exception ex) {
            ex.printStackTrace();
            Log.i("HttpFileUpload", "URL Malformatted");
        }
        // TODO Auto-generated method stub
        return null;
    }
}
import java.io.DataOutputStream;
导入java.io.FileInputStream;
导入java.io.IOException;
导入java.io.InputStream;
导入java.net.HttpURLConnection;
导入java.net.MalformedURLException;
导入java.net.URL;
导入java.util.Random;
导入android.content.Context;
导入android.net.Uri;
导入android.os.AsyncTask;
导入android.provider.Settings.Secure;
导入android.util.Log;
公共类上载任务{
URL-connectURL;
弦乐;
字符串usernameString;
上下文con;
字符串iFileName;
字节[]dataToServer;
FileInputStream FileInputStream=null;
无效发送(){
字符串lineEnd=“\r\n”;
字符串双连字符=“--”;
字符串边界=“*******”;
String Tag=“Info”;
试一试{
Log.e(标记“启动Http文件发送到URL”);
//打开到URL的HTTP连接
HttpURLConnection conn=(HttpURLConnection)connectURL.openConnection();
//允许输入
conn.setDoInput(真);
//允许输出
连接设置输出(真);
//不要使用缓存副本。
conn.SETUSECHACHES(假);
//使用post方法。
conn.setRequestMethod(“POST”);
conn.setRequestProperty(“连接”、“保持活动”);
conn.setRequestProperty(“内容类型”、“多部分/表单数据;边界=“+boundary”);
DataOutputStream dos=新的DataOutputStream(conn.getOutputStream());
Log.d(“信息”,iFileName);
writeBytes(“内容处理:表单数据;名称=\”uploadedfile\“文件名=\”+iFileName+“\”+lineEnd);
dos.writeBytes(lineEnd);
Log.e(标记“写入标题”);
//创建最大大小的缓冲区
int bytesavable=fileInputStream.available();
int maxBufferSize=1024;
int bufferSize=Math.min(字节可用,maxBufferSize);
字节[]缓冲区=新字节[bufferSize];
//读取文件并将其写入表单。。。
int bytesRead=fileInputStream.read(buffer,0,bufferSize);
而(字节读取>0){
Log.e(标记“发送…”);
写入(缓冲区,0,缓冲区大小);
bytesAvailable=fileInputStream.available();
bufferSize=Math.min(字节可用,maxBufferSize);
bytesRead=fileInputStream.read(缓冲区,0,缓冲区大小);
}
dos.writeBytes(lineEnd);
写字节(两个连字符+边界+两个连字符+行结束);
//合流
fileInputStream.close();
dos.flush();
Log.e(标记“文件已发送,响应:”+String.valueOf(conn.getResponseCode()));
InputStream is=conn.getInputStream();
//从服务器检索响应
int-ch;
StringBuffer b=新的StringBuffer();
而((ch=is.read())!=-1){
b、 追加((char)ch);
}
字符串s=b.toString();
Log.i(“响应”,s);
dos.close();
String aidString=Secure.getString(con.getContentResolver(),Secure.ANDROID_ID);
//新建BackgroundPost(new OnTaskComplete(){}).execute(usernameString,s,“0”,“0”,aidString,”);
}捕获(格式错误){
Log.e(标记,“URL错误:+ex.getMessage(),ex);
}
捕获(ioe异常ioe){
Log.e(标记“IO错误:”+ioe.getMessage(),ioe);
}
}
公开募捐{
//TODO自动生成的方法存根
}
@凌驾
受保护的字符串doInBackground(对象…参数){
试一试{
connectURL=新URL(conf.d+“upload.php”);
usernameString=String.valueOf(参数[0]);
con=(上下文)参数[1];
随机=新随机();
字符串u=(字符串)参数[2];
日志d(“信息”,“u:+u”);
iFileName=random.nextInt()+“”+u.substring(u.lastIndexOf(“.”+1);
Log.d(“信息”,“文件名:”+iFileName);
fileInputStream=新的fileInputStream(u);
发送();
}捕获(例外情况除外){
例如printStackTrace();
Log.i(“HttpFileUpload”,“URL格式错误”);
}
//TODO自动生成的方法存根
返回null;
}
}
以及PHP文件:

  <?php
  $target_path = "uploads/";

  print_r($_FILES);

  $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!";
  }
  ?>

我认为您错过了在fileInputStream.close()之后关闭边界块


我建议您使用apache commons上传文件。