基于标准http实现Android多文件上传

概述实现多文件的上传，基于标准的http来实现。1.多文件上传MyUploader类的实现：/**

实现多文件的上传，基于标准的http来实现。

1.多文件上传MyUploader类的实现：

/** *  * 同步上传多个文件 * 基于标准的http实现，需要在非UI线程中调用，以免阻塞UI。 * */public class MyUploader { private static final String TAG = "MyUploader"; // ////////////////////同步上传多个文件/////////  /**   * 同步上传file   *    * @param Url   * @param fullfilename   *   : 全路径，ex. /sdcard/f/yh.jpg   * @param filename   *   : file name,ex. yh.jpg   * @return 服务器的响应结果(字符串形式)   */  public String MyUploadMultifileSync(String Url,List<String> fileList,Map<String,String> params) {   String reulstCode = "";   String end = "\r\n";   String twoHyphens = "--";   String boundary = "--------boundary";   try {    URL url = new URL(actionUrl);    httpURLConnection con = (httpURLConnection) url.openConnection();    // 允许input、Output，不使用Cache    con.setDoinput(true);    con.setDoOutput(true);    con.setUseCaches(false);    // 设置传送的method=POST    con.setRequestMethod("POST");    // setRequestProperty    con.setRequestProperty("Connection","Keep-Alive");    con.setRequestProperty("Charset","UTF-8");    // con.setRequestProperty("Content-Type",// "application/x-www-form-urlencoded");    con.setRequestProperty("Content-Type","multipart/form-data;boundary=" + boundary);    StringBuffer s = new StringBuffer();    // 设置DataOutputStream    DataOutputStream dos = new DataOutputStream(con.getoutputStream());    for (int i = 0; i < fileList.size(); i++) {     String filePath = fileList.get(i);     int endfileIndex = filePath.lastIndexOf("/");     String filename = filePath.substring(endfileIndex + 1);     Log.i(TAG,"filename= " + filename);     // set 头部     StringBuilder sb = new StringBuilder();     sb.append(twoHyphens);     sb.append(boundary);     sb.append(end);     sb.append("Content-disposition: form-data; ");     sb.append("name=" + "\"" + "upload_file" +i + "\"");     sb.append(";filename=");     sb.append("\"" + filename + "\"");     sb.append(end);     sb.append("Content-Type: ");     sb.append("image/jpeg");     sb.append(end);     sb.append(end);     // 1. write sb     dos.writeBytes(sb.toString());     // 取得文件的fileinputStream     fileinputStream fis = new fileinputStream(filePath);     // 设置每次写入1024bytes     int bufferSize = 1024;     byte[] buffer = new byte[bufferSize];     int length = -1;     // 从文件读取数据至缓冲区     while ((length = fis.read(buffer)) != -1) {      dos.write(buffer,length);     }     dos.writeBytes(end);     fis.close();     dos.writeBytes(end);     dos.writeBytes(end);     //dos.writeBytes(end);     //dos.flush();     // close streams     //fis.close();    }    // set 尾部    StringBuilder sb2 = new StringBuilder();    if (params != null && !params.isEmpty()) {     for (String key : params.keySet()) {      String value = params.get(key);      sb2.append(twoHyphens);      sb2.append(boundary);      sb2.append(end);      sb2.append("Content-disposition: form-data; ");      sb2.append("name=" + "\"");      sb2.append(key + "\"");      sb2.append(end);      sb2.append(end);      sb2.append(value);      sb2.append(end);     }    }    sb2.append(twoHyphens + boundary + end);    dos.writeBytes(sb2.toString());    dos.flush();    Log.i(TAG,"sb2:" + sb2.toString());    // 取得Response内容    inputStream is = con.getinputStream();    int ch;    StringBuffer b = new StringBuffer();    while ((ch = is.read()) != -1) {     b.append((char) ch);    }    reulstCode = b.toString().trim();    // 关闭    dos.close();   } catch (IOException e) {    Log.i(TAG,"IOException: " + e);    e.printstacktrace();   }   return reulstCode;  }}

2. 调用方法：

由于MyUploader的MyUploadMultifileSync本身是同步的函数请求，所以，这个函数需要在非UI线程中执行。本例采用Thread+Handler的方式来进行说明。
下面是activity的主要代码,功能是将cache目录中的的jpg文件上传到指定的服务器：

public voID uploadThreadtest() {  new Thread(new Runnable() {   @OverrIDe   public voID run() {    try {     upload();    } catch (Exception e) {     e.printstacktrace();    }   }  }).start(); } private voID upload() {  String url = "https://httpbin.org/post";  List<String> fileList = getCachefiles();  if (fileList == null) {   myHandler.sendEmptyMessage(-1);  }else {   MyUploader myUpload = new MyUploader();   //同步请求，直接返回结果，根据结果来判断是否成功。   String reulstCode = myUpload.MyUploadMultifileSync(url,fileList,null);   Log.i(TAG,"upload reulstCode: " + reulstCode);   myHandler.sendEmptyMessage(0);  } } private List<String> getCachefiles() {  List<String> fileList = new ArrayList<String>();  file catchPath = mContext.getCacheDir();  if (catchPath!=null && catchPath.isDirectory()) {   file[] files = catchPath.Listfiles();   if (files == null || files.length<1) {    return null;   }   for (int i = 0; i < files.length; i++) {    if (files[i].isfile() && files[i].getabsolutePath().endsWith(".jpg")) {     fileList.add(files[i].getabsolutePath());    }   }   return fileList;  }  return null; } ////////////handler///// private Handler myHandler = new Handler() {  @OverrIDe  public voID handleMessage(Message msg) {   Log.i(TAG,"handleMessage msg===" + msg);   if (msg.what == -1) {    Toast.makeText(mContext,"not find file!",Toast.LENGTH_LONG).show();    return;   }else {    Toast.makeText(mContext,"upload success!",Toast.LENGTH_LONG).show();   }  } };

3 项目demo代码地址：https://github.com/ranke/HttpAsyncTest

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程小技巧。

总结

以上是内存溢出为你收集整理的基于标准http实现Android多文件上传全部内容，希望文章能够帮你解决基于标准http实现Android多文件上传所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。