src/main/java/com/rockagen/commons/http/HttpConn.java
public static String send(String target, Map<String, String> headers, RequestMethod method)
            throws IOException {
        return send(target, ENCODING, headers, method);
    }
public static String send(String target, Map<String, String> headers, RequestMethod method)
            throws IOException {
        return send(target, ENCODING, headers, method);
    }
Send a http request with explicit params

@param target  target address
@param headers headers
@param method  {@link com.rockagen.commons.http.RequestMethod}
@return result String
@throws IOException  if an I/O error occurs