Micro-channel pay callback signature Tomcat failed to solve coding problems

In IDEA embedded Tomcat8 normal environment, the Windows deployment Tomcat8 not normal, return the wrong signature, because tomcat default encoding using the ISO-8859-1 encoding parser, garbage problem as long as you can read the code to specify the HttpServletRequest solve

ServletInputStream inStream = request.getInputStream();

String resp = getStrFromInsByCode(inStream, "utf-8");

/**
 *
 * @param is 输入流
 * @param code 指定读取编码
 * @return
 */
public static String getStrFromInsByCode(InputStream is, String code) {
    StringBuilder builder = new StringBuilder();
    BufferedReader reader = null;


    try {
        reader = new BufferedReader(new InputStreamReader(is, code));
        String line;
        while ((line = reader.readLine()) != null) {
            builder.append(line + "\n");
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return builder.toString();
}