Http请求之基于HttpUrlConnection，支持Header,Body传值，支持Multipart上传文件：

Http请求之基于HttpUrlConnection，支持Header,Body传值，支持Multipart上传文件：

[java] view plain copy





public static String post(String actionUrl, Map<String, String> headParams,

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(30 * 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);

if(headParams!=null){

for(String key : headParams.keySet()){

conn.setRequestProperty(key, headParams.get(key));

}

}

StringBuilder sb = new StringBuilder();

if (params!=null) {

// 首先组拼文本类型的参数

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());

if (!TextUtils.isEmpty(sb.toString())) {

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);

Log.i("HttpUtil", "写入中...");

}

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();

Log.i("HttpUtil", "conn.getContentLength():"+conn.getContentLength());

// 得到响应码

int res = conn.getResponseCode();

InputStream in = conn.getInputStream();

if (res == 200) {

BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in, "UTF-8"));

StringBuffer buffer = new StringBuffer();

String line = "";

while ((line = bufferedReader.readLine()) != null){

buffer.append(line);

}

// int ch;

// StringBuilder sb2 = new StringBuilder();

// while ((ch = in.read()) != -1) {

// sb2.append((char) ch);

// }

return buffer.toString();

}

outStream.close();

conn.disconnect();

return in.toString();

}