Android实现多参数文件和数据上传

本文实例为大家分享了android实现多参数文件和数据上传的具体代码，供大家参考，具体内容如下

上代码：

/**
 * 可传入多张图片和参数
 * 
 * @param actionurl
 *   发送地址
 * @param params
 *   文本参数
 * @param files
 *   文件参数
 * @return
 * @throws ioexception
 */
 public static string mulpost(string actionurl, map<string, string> params,
 map<string, file> files) throws ioexception {
 string result = "";
 
 string boundary = java.util.uuid.randomuuid().tostring();
 string prefix = "--", linend = "\r\n";
 string multipart_from_data = "multipart/form-data";
 string charset = "utf-8";
 url uri = new url(actionurl);
 httpurlconnection conn = (httpurlconnection) uri.openconnection();
 conn.setreadtimeout(5 * 1000);
 conn.setdoinput(true);// 允许输入
 conn.setdooutput(true);// 允许输出
 conn.setusecaches(false);
 conn.setrequestmethod("post"); // post方式
 conn.setrequestproperty("connection", "keep-alive");
 conn.setrequestproperty("charsert", "utf-8");
 conn.setrequestproperty("content-type", multipart_from_data
 + ";boundary=" + boundary);
 
 // 首先组拼文本类型的参数
 stringbuilder sb = new stringbuilder();
 for (map.entry<string, string> entry : params.entryset()) {
 sb.append(prefix);
 sb.append(boundary);
 sb.append(linend);
 sb.append("content-disposition: form-data; name=\""
  + entry.getkey() + "\"" + linend);
 sb.append("content-type: text/plain; charset=" + charset + linend);
 sb.append("content-transfer-encoding: 8bit" + linend);
 sb.append(linend);
 sb.append(entry.getvalue());
 sb.append(linend);
 }
 
 dataoutputstream outstream = new dataoutputstream(
 conn.getoutputstream());
 outstream.write(sb.tostring().getbytes());
 
 // 发送文件数据
 if (files != null)
 for (map.entry<string, file> file : files.entryset()) {
 stringbuilder sb1 = new stringbuilder();
 sb1.append(prefix);
 sb1.append(boundary);
 sb1.append(linend);
 sb1.append("content-disposition: form-data; name=\"file\"; filename=\""
  + file.getkey() + "\"" + linend);
 sb1.append("content-type: application/octet-stream; charset="
  + charset + linend);
 sb1.append(linend);
 outstream.write(sb1.tostring().getbytes());
 inputstream is = new fileinputstream(file.getvalue());
 byte[] buffer = new byte[1024];
 int len = 0;
 while ((len = is.read(buffer)) != -1) {
  outstream.write(buffer, 0, len);
 }
 
 is.close();
 outstream.write(linend.getbytes());
 }
 
 // 请求结束标志
 byte[] end_data = (prefix + boundary + prefix + linend).getbytes();
 outstream.write(end_data);
 outstream.flush();
 
 inputstream is = conn.getinputstream();
 inputstreamreader isr = new inputstreamreader(is, "utf-8");
 bufferedreader br = new bufferedreader(isr);
 result = br.readline();
 outstream.close();
 conn.disconnect();
 return result;
 }

方法就是这样的。

使用时可封装在自己的类里直接调用即可，记得加网络访问和读取系统文件的权限哦。

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

由于上传是耗时操作，必须得要弄在另一个线程中调用才可以。

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。