獲取requestBody內容

    /**
     * @Description: requestBody的處理
     * @userName: J
     * @param request
    **/
    public static void processRequest(HttpServletRequest request)
    {
        try
        {
            request.setCharacterEncoding("UTF-8");
            int size = request.getContentLength();

            InputStream is = request.getInputStream();

            byte
 
[] reqBodyBytes = readBytes(is, size);
            //獲取請求body中的內容
            String res = new String(reqBodyBytes);

            request.setAttribute("params", res);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }

    public static final byte[] readBytes
 
(InputStream is, int contentLen) {
        if (contentLen > 0) {
            int readLen = 0;
            int readLengthThisTime = 0;
            byte[] message = new byte[contentLen];
            try {
                while (readLen != contentLen) {
                    readLengthThisTime = is.read(message, readLen, contentLen - readLen);
                    if
 
 (readLengthThisTime == -1) {// Should not happen.
                        break;
                    }
                    readLen += readLengthThisTime;
                }
                return message;
            } catch (IOException e) {
                // Ignore
                e.printStackTrace();
            }
        }
        return new byte[]{};
    }

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