/**
* 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 file 上传文件
*/
public static String post(String actionUrl, Map<String, String> params, FormFile[] files) {
try {
String BOUNDARY = "---------7d4a6d158c9"; // 数据分隔线
String MULTIPART_FORM_DATA = "multipart/form-data";
URL url = new URL(actionUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(6000);
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("Charset", "UTF-8");
conn.setRequestProperty("Content-Type", MULTIPART_FORM_DATA + "; boundary=" + BOUNDARY);
StringBuilder sb = new StringBuilder();
// 上传的表单参数部分，格式请参考文章
for (Map.Entry<String, String> entry : params.entrySet()) { // 构建表单字段内容
sb.append("--");
sb.append(BOUNDARY);
sb.append("\r\n");
sb.append("Content-Disposition: form-data; name=\"" + entry.getKey() + "\"\r\n\r\n");
sb.append(entry.getValue());
sb.append("\r\n");
}
DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());
outStream.write(sb.toString().getBytes()); // 发送表单字段数据
FileInputStream fis = null;
// 上传的文件部分，格式请参考文章
for (FormFile file : files) {
StringBuilder split = new StringBuilder();
split.append("--");
split.append(BOUNDARY);
split.append("\r\n");
split.append(
"Content-Disposition: form-data;name=\""
+ file.getFormname()
+ "\";filename=\""
+ file.getFilname()
+ "\"\r\n");
split.append("Content-Type: " + file.getContentType() + "\r\n\r\n");
outStream.write(split.toString().getBytes());
outStream.write(file.getData(), 0, file.getData().length);
outStream.write("\r\n".getBytes());
}
byte[] end_data = ("--" + BOUNDARY + "--\r\n").getBytes(); // 数据结束标志
outStream.write(end_data);
outStream.flush();
int cah = conn.getResponseCode();
Log.i("userinfo", "" + cah);
if (cah != 200) throw new RuntimeException("请求url失败");
InputStream is = conn.getInputStream();
InputStreamReader isr = new InputStreamReader(is, "utf-8"); // 解决乱码问题，保证服务器端返回数据正常显示
BufferedReader br = new BufferedReader(isr);
String result = br.readLine();
outStream.close();
conn.disconnect();
return result;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
