(android功能代码) android文件上传服务器

发布时间:2016-12-7 5:45:37 编辑:www.fx114.net 分享查询网我要评论
本篇文章主要介绍了"(android功能代码) android文件上传服务器",主要涉及到(android功能代码) android文件上传服务器方面的内容,对于(android功能代码) android文件上传服务器感兴趣的同学可以参考一下。

/** * 通过拼接的方式构造请求内容,实现参数传输以及文件传输 * @param actionUrl * @param params * @param files * @return * @throws IOException */ public static String post(String actionUrl, Map<String, String> params, Map<String, File> files) throws IOException { 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); // 缓存的最长时间 conn.setDoInput(true);// 允许输入 conn.setDoOutput(true);// 允许输出 conn.setUseCaches(false); // 不允许使用缓存 conn.setRequestMethod("POST"); 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){ int i = 0; 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"+(i++)+"\"; 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(); //得到响应码 int res = conn.getResponseCode(); InputStream in = null; if (res == 200) { in = conn.getInputStream(); int ch; StringBuilder sb2 = new StringBuilder(); while ((ch = in.read()) != -1) { sb2.append((char) ch); } } return in == null ? null : in.toString(); }

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