HttpServletRequest获取GET POST JSON 请求数据_request.getparametermap()可以获取post json数据吗

HttpServletRequest接收获取GET POST JSON 请求数据

GET请求数据获取:

public void get(HttpServletRequest request) throws IOException {
        String params = request.getQueryString();
    }

POST请求数据获取:

post请求数据需要从请求头中获取

public void post(HttpServletRequest request) throws IOException {
        Map<String, String[]> map = request.getParameterMap();
        Map<String, Object> params = new HashMap<String, Object>();
        int length;
        //将Map<String, String[]>转为普通map
        for (Map.Entry<String, String[]> entry : map.entrySet()) {
            length = entry.getValue().length;
            if (length == 1) {
                params.put(entry.getKey(), entry.getValue()[0]);
            } else if (length > 1) {
                params.put(entry.getKey(), entry.getValue());
            }
        }
    }

JSON请求数据获取:

通过InputStream流获取

public void json(HttpServletRequest request) throws IOException {
        BufferedReader streamReader = new BufferedReader( new InputStreamReader(request.getInputStream(), "UTF-8"));
        StringBuilder sb = new StringBuilder();
        String inputStr;
        while ((inputStr = streamReader.readLine()) != null) {
            sb.append(inputStr);
        }
        System.out.println(sb.toString());
    }