Android, 关于上传服务器图片Url,

下面是copy的以为大神的上传工具类,方便日后使用

package com.spring.sky.image.upload.network; 
 
import java.io.DataOutputStream; 
import java.io.File; 
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.UUID; 
 
import android.util.Log; 
 
/**
 * 
 * 上传工具类
 * @author spring sky
 * Email:vipa1888@163.com
 * QQ:840950105 www.2cto.com
 * MyName:石明政
 */ 
public class UploadUtil { 
    private static final String TAG = "uploadFile"; 
    private static final int TIME_OUT = 10*1000;   //超时时间 
    private static final String CHARSET = "utf-8"; //设置编码 
    /**
     * android上传文件到服务器
     * @param file  需要上传的文件
     * @param RequestURL  请求的rul
     * @return  返回响应的内容
     */ 
    public static String uploadFile(File file,String RequestURL) 
    { 
        String result = null; 
        String  BOUNDARY =  UUID.randomUUID().toString();  //边界标识   随机生成 
        String PREFIX = "--" , LINE_END = "\r\n";  
        String CONTENT_TYPE = "multipart/form-data";   //内容类型 
         
        try { 
            URL url = new URL(RequestURL); 
            HttpURLConnection conn = (HttpURLConnection) url.openConnection(); 
            conn.setReadTimeout(TIME_OUT); 
            conn.setConnectTimeout(TIME_OUT); 
            conn.setDoInput(true);  //允许输入流 
            conn.setDoOutput(true); //允许输出流 
            conn.setUseCaches(false);  //不允许使用缓存 
            conn.setRequestMethod("POST");  //请求方式 
            conn.setRequestProperty("Charset", CHARSET);  //设置编码 
            conn.setRequestProperty("connection", "keep-alive");    
            conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary=" + BOUNDARY);  
             
            if(file!=null) 
            { 
                /**
                 * 当文件不为空，把文件包装并且上传
                 */ 
                DataOutputStream dos =
new DataOutputStream( conn.getOutputStream()); 
                StringBuffer sb = new StringBuffer(); 
                sb.append(PREFIX); 
                sb.append(BOUNDARY); 
                sb.append(LINE_END); 
                /**
                 * 这里重点注意：
                 * name里面的值为服务器端需要key   只有这个key 才可以得到对应的文件
                 * filename是文件的名字，包含后缀名的   比如:abc.png  
                 */ 
                 
                sb.append("Content-Disposition: form-data; name=\"img\"; filename=\""+file.getName()+"\""+LINE_END);  
               
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sb.append("Content-Type: application/octet-stream; charset="+CHARSET+LINE_END); 
                sb.append(LINE_END); 
                dos.write(sb.toString().getBytes()); 
                InputStream is = new FileInputStream(file); 
                byte[] bytes = new byte[1024]; 
                int len = 0; 
                while((len=is.read(bytes))!=-1) 
                { 
                    dos.write(bytes, 0, len); 
                } 
                is.close(); 
                dos.write(LINE_END.getBytes()); 
                byte[] end_data = (PREFIX+BOUNDARY+PREFIX+LINE_END).getBytes(); 
                dos.write(end_data); 
                dos.flush(); 
                /**
                 * 获取响应码  200=成功
                 * 当响应成功，获取响应的流  
                 */ 
                int res = conn.getResponseCode();   
                Log.e(TAG, "response code:"+res); 
//              if(res==200) 
//              { 
                    Log.e(TAG, "request success"); 
                    InputStream input =  conn.getInputStream(); 
                    StringBuffer sb1= new StringBuffer(); 
                    int ss ; 
                    while((ss=input.read())!=-1) 
                    { 
                        sb1.append((char)ss); 
                    } 
                    result = sb1.toString(); 
                    Log.e(TAG, "result : "+ result); 
//              } 
//              else{ 
//                  Log.e(TAG, "request error"); 
//              } 
            } 
        } catch (MalformedURLException e) { 
            e.printStackTrace(); 
        } catch (IOException e) { 
            e.printStackTrace(); 
        } 
        return result; 
    } 
} 

然后,借鉴大神在onActivityForResult回调里面对图片路径的处理:

   @Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
        if(resultCode==Activity.RESULT_OK) 
        { 
            /** 
             * 当选择的图片不为空的话，在获取到图片的途径   
             */ 
            Uri uri = data.getData(); 
            Log.e(TAG, "uri = "+ uri); 
            try { 
                String[] pojo = {MediaStore.Images.Media.DATA}; 
                 
                Cursor cursor = managedQuery(uri, pojo, null, null,null); 
                if(cursor!=null) 
                { 
                    ContentResolver cr = this.getContentResolver(); 
                    int colunm_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); 
                    cursor.moveToFirst(); 
                    String path = cursor.getString(colunm_index); 
                    /***
                     * 这里加这样一个判断主要是为了第三方的软件选择，比如：使用第三方的文件管理器的话，你选择的文件就不一定是图片了，这样的话，我们判断文件的后缀名
                     * 如果是图片格式的话，那么才可以   
                     */ 
                    if(path.endsWith("jpg")||path.endsWith("png")) 
                    { 
                        picPath = path; 
                        Bitmap bitmap = BitmapFactory.decodeStream(cr.openInputStream(uri)); 
                        imageView.setImageBitmap(bitmap); 
                    }else{alert();} 
                }else{alert();} 
                 
            } catch (Exception e) { 
            } 
        } 
         
        super.onActivityResult(requestCode, resultCode, data); 
    } 
     
    private void alert() 
    { 
        Dialog dialog = new AlertDialog.Builder(this) 
        .setTitle("提示") 
        .setMessage("您选择的不是有效的图片") 
        .setPositiveButton("确定", 
                new DialogInterface.OnClickListener() { 
                    public void onClick(DialogInterface dialog, 
                            int which) { 
                        picPath = null; 
                    } 
                }) 
        .create(); 
        dialog.show(); 
    } 
     
}