Android http post 上传图片不成功

 客户端：Android,服务端：php
  我在 Android客户端写了几种上传文件的方法，都没上传成功，
   （1） 基于Android HttpClient的 Post方法

 
Java code?/**      * 用Post模式访问http，包括附件上传      * @param url URL      * @param nameValuePairs 参数信息      * @return  返回的字符串      */    public static String post(String url, List<NameValuePair> nameValuePairs) {         String strResult = "";         HttpClient httpClient = new DefaultHttpClient();         HttpContext localContext = new BasicHttpContext();         HttpPost httpPost = new HttpPost(url);           try {               MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);             for(int index = 0; index < nameValuePairs.size(); index++) {                 if(nameValuePairs.get(index).getName().equalsIgnoreCase("upload")) {                     // If the key equals to "upload", we use FileBody to transfer the data                     GiantLog.d("httpServerAccess","nameValuePair:name" + nameValuePairs.get(index).getName()  + nameValuePairs.get(index).getValue());                     entity.addPart(nameValuePairs.get(index).getName(), new FileBody(new File (nameValuePairs.get(index).getValue())));                 } else {                     // Normal string data                     entity.addPart(nameValuePairs.get(index).getName(), new StringBody(nameValuePairs.get(index).getValue()));                 }             }               httpPost.setEntity(entity);               HttpResponse httpResponse = httpClient.execute(httpPost, localContext);             if(httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {                 // 取出响应字符                strResult = EntityUtils.toString(httpResponse.getEntity(),HTTP.UTF_8); //                byte[] bytesResult = EntityUtils.toByteArray(httpResponse //                        .getEntity()); //                if (bytesResult != null) { //                    strResult = new String(bytesResult, "utf-8"); //                }               }         } catch (IOException e) {             e.printStackTrace();             strResult = "";           }           return  strResult;     }

(2) 基于HttpUrlConnection，需要拼接Http头

Java code?package com.giant.android.utils;   import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.util.*;     /**  * 文件名称：UploadImage.java  * 创建日期：2012-12-28  * 实现图片文件上传  */public class UploadImage {     String multipart_form_data = "multipart/form-data";     String twoHyphens = "--";     String boundary = "****************fD4fH3gL0hK7aI6";    // 数据分隔符     String lineEnd = System.getProperty("line.separator");    // The value is "\r\n" in Windows.       private final static String LINEND = "\r\n";     private final static String BOUNDARY = "---------------------------7da2137580612"; //数据分隔线     private final static String PREFIX = "--";     private  static  final String TAG = "UploadImage";       /*       * 上传图片内容，格式参考HTTP 协议格式。       * 格式如下所示：       * --****************fD4fH3hK7aI6       * Content-Disposition: form-data; name="upload_file"; filename="apple.jpg"       * Content-Type: image/jpeg       *       * 这儿是文件的内容，二进制流的形式       */     private void addImageContent(Image[] files, DataOutputStream output) {         for(Image file : files) {             StringBuilder split = new StringBuilder();             split.append(twoHyphens + boundary + lineEnd);             split.append("Content-Disposition: form-data; name=\"" + file.getFormName() + "\"; filename=\"" + file.getFileName() + "\"" + lineEnd);             split.append("Content-Type: " + "image/jpg" + lineEnd);             split.append(lineEnd);             try {                 // 发送图片数据                 output.writeBytes(split.toString());                 GiantLog.d(TAG,"image formdata:" + split.toString() );                 output.write(file.getData(), 0, file.getData().length);                 GiantLog.d(TAG,"image data length:" +  file.getData().length );                 output.writeBytes(lineEnd);             } catch (IOException e) {                 throw new RuntimeException(e);             }         }     }       /*       * 构建表单字段内容，格式请参考HTTP 协议格式（用FireBug可以抓取到相关数据）。(以便上传表单相对应的参数值)       * 格式如下所示：       * --****************fD4fH3hK7aI6       * Content-Disposition: form-data; name="action"       * // 一空行，必须有       * upload       */     private void addFormField(Map<String,String> params, DataOutputStream output) {         StringBuilder sb = new StringBuilder();         for(Map.Entry<String,String> entry : params.entrySet()) {             sb.append(twoHyphens + boundary + lineEnd);             sb.append("Content-Disposition: form-data; name=\"" + entry.getKey() + "\"" + lineEnd);             sb.append(lineEnd);             sb.append(entry.getValue() + lineEnd);         }         try {             output.writeBytes(sb.toString());// 发送表单字段数据         } catch (IOException e) {             throw new RuntimeException(e);         }     }         /**      * 封装表单文本数据      * @param paramText      * @return      */     private String bulidFormText(Map<String,String> paramText){         if(paramText==null || paramText.isEmpty()) return "";         StringBuffer sb = new StringBuffer("");         for(Map.Entry<String,String> entry : paramText.entrySet()){             sb.append(PREFIX).append(BOUNDARY).append(LINEND);             sb.append("Content-Disposition:form-data;name=\""                     + entry.getKey() + "\"" + LINEND); //            sb.append("Content-Type:text/plain;charset=" + CHARSET + LINEND);             sb.append(LINEND);             sb.append(entry.getValue());             sb.append(LINEND);         }         return sb.toString();     }         /**      * 直接通过 HTTP 协议提交数据到服务器，实现表单提交功能。      * @param actionUrl 上传路径      * @param params 请求参数key为参数名，value为参数值      * @param files 上传文件信息      * @return 返回请求结果      */    public String post(String actionUrl, Map<String,String> params, Image[] files) {         HttpURLConnection conn = null;         DataOutputStream dataOutputStream = null;         BufferedReader input = null;         try {             URL url = new URL(actionUrl);             conn = (HttpURLConnection) url.openConnection();             conn.setConnectTimeout(120000);             conn.setDoInput(true);        // 允许输入             conn.setDoOutput(true);        // 允许输出             conn.setUseCaches(false);    // 不使用Cache             conn.setRequestMethod("POST");             conn.setRequestProperty("Connection", "keep-alive");             conn.setRequestProperty("Content-Type", multipart_form_data + "; boundary=" + boundary);               conn.connect();             dataOutputStream = new DataOutputStream(conn.getOutputStream());               addImageContent(files, dataOutputStream);    // 添加图片内容               addFormField(params, dataOutputStream);    // 添加表单字段内容               dataOutputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);// 数据结束标志             dataOutputStream.flush(); //            output.close();               int code = conn.getResponseCode();             if(code != 200) {                 throw new RuntimeException("请求‘" + actionUrl +"’失败！");             }               input = new BufferedReader(new InputStreamReader(conn.getInputStream()));             StringBuilder response = new StringBuilder();             String oneLine;             while((oneLine = input.readLine()) != null) {                 response.append(oneLine + lineEnd);             } //            input.close();               return response.toString();         } catch (IOException e) {             throw new RuntimeException(e);         } finally {             // 统一释放资源             try {                 if(dataOutputStream != null) {                     dataOutputStream.close();                 }                 if(input != null) {                     input.close();                 }             } catch (IOException e) {                 throw new RuntimeException(e);             }               if(conn != null) {                 conn.disconnect();             }         }     }           public static void main(String[] args) {         try {             String response = "";               BufferedReader in = new BufferedReader(new FileReader("config/actionUrl.properties"));             String actionUrl = in.readLine();               // 读取表单对应的字段名称及其值             Properties formDataParams = new Properties();             formDataParams.load(new FileInputStream(new File("config/formDataParams.properties")));             Set<Map.Entry<Object,Object>> params = formDataParams.entrySet();               // 读取图片所对应的表单字段名称及图片路径             Properties imageParams = new Properties();             imageParams.load(new FileInputStream(new File("config/imageParams.properties")));             Set<Map.Entry<Object,Object>> images = imageParams.entrySet();             Image[] files = new Image[images.size()];             int i = 0;             for(Map.Entry<Object,Object> image : images) {                 Image file = new Image(image.getValue().toString(), image.getKey().toString());                 files[i++] = file;             }   //            Image file = new Image("images/apple.jpg", "upload_file"); //            Image[] files = new Image[0]; //            files[0] = file;                 //    response = new UploadImage().post(actionUrl, params, files);               System.out.println("返回结果：" + response);         } catch (IOException e) {             e.printStackTrace();         }     } }
MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
去掉参数：HttpMultipartMode.BROWSER_COMPATIBLE 试试。我以前也碰到这样的问题过

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