第一种方法，获取post请求发送的Json数据

	public static String JsonReq(HttpServletRequest request) {
		BufferedReader br;
		StringBuilder sb = null;
		String reqBody = null;
		try {
			br = new BufferedReader(new InputStreamReader(
					request.getInputStream()));
			String line = null;
			sb = new StringBuilder();
			while ((line = br.readLine()) != null) {
				sb.append(line);
			}
			reqBody = URLDecoder.decode(sb.toString(), "UTF-8");
			reqBody = reqBody.substring(reqBody.indexOf("{"));
			request.setAttribute("inputParam", reqBody);
			System.out.println("JsonReq reqBody>>>>>" + reqBody);
			return reqBody;
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return "jsonerror";
		}
	}

第二种方法，获取post、get请求发送的数据
	public static String getParamString(HttpServletRequest request) {
		Map<String, String[]> map = request.getParameterMap();
		StringBuilder sb = new StringBuilder();
		String reqBody = null;
		try {
			for (Entry<String, String[]> e : map.entrySet()) {
				sb.append(e.getKey()).append("=");
				String[] value = e.getValue();
				if (value != null && value.length == 1) {
					sb.append(value[0]).append("&");
				} else {
					sb.append(Arrays.toString(value)).append("\n");
				}
			}
			reqBody = URLDecoder.decode(sb.toString(), "UTF-8");
			if (reqBody.contains("{") && reqBody.contains("}")) {
				reqBody = reqBody.substring(reqBody.indexOf("{"));
				reqBody = reqBody.substring(0, reqBody.lastIndexOf("}") + 1);
			} else if (reqBody.contains("&")) {
				reqBody = reqBody.substring(0, reqBody.lastIndexOf("&"));
			}
		} catch (UnsupportedEncodingException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} finally {
			System.out.println("JsonReq reqBody>>>>>" + reqBody);
		}
		return reqBody;
	}