Android学习之使用HttpURLConnection上传单多个文件

private void upload(String[] uploadFiles, String actionUrl) {
String end = "/r/n";
String twoHyphens = "--";
String boundary = "*****";
try {
URL url = new URL(actionUrl);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
// 发送POST请求必须设置如下两行
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false);
con.setRequestMethod("POST");
con.setRequestProperty("Connection", "Keep-Alive");
con.setRequestProperty("Charset", "UTF-8");
con.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);
DataOutputStream ds =
new DataOutputStream(con.getOutputStream());
for (int i = 0; i < uploadFiles.length; i++) {
String uploadFile = uploadFiles[i];
String filename = uploadFile.substring(uploadFile.lastIndexOf("//") + 1);
ds.writeBytes(twoHyphens + boundary + end);
ds.writeBytes("Content-Disposition: form-data; " +
"name=/"file" + i + "/";filename=/"" +
filename + "/"" + end);
ds.writeBytes(end);
FileInputStream fStream = new FileInputStream(uploadFile);
int bufferSize = 1024;
byte[] buffer = new byte[bufferSize];
int length = -1;
while ((length = fStream.read(buffer)) != -1) {
ds.write(buffer, 0, length);
}
ds.writeBytes(end);
/* close streams */
fStream.close();
}
ds.writeBytes(twoHyphens + boundary + twoHyphens + end);
ds.flush();
// 定义BufferedReader输入流来读取URL的响应
InputStream is = con.getInputStream();
int ch;
StringBuffer b = new StringBuffer();
while ((ch = is.read()) != -1) {
b.append((char) ch);
}
String s = b.toString();
if (s.contains("successfully")) {
// for (int i = 1; i < 5; i++) {
int beginIndex = s.indexOf("url =") + 5;
int endIndex = s.indexOf("/n", beginIndex);
String urlStr = s.substring(beginIndex, endIndex).trim();
System.out.println(urlStr);
// }
}
ds.close();
} catch (Exception e) {
}
}