获取post请求的数据

通常从http post请求获取数据的方法如下：

1.request.getInputStream()

2.request.getReader()

3.request.getParameterMap()系列

4.通过spring框架中的RequestBody或RequestParam

public static String req2RawString(HttpServletRequest request) {

          StringBuilder sb = new StringBuilder();

          BufferedReader reader = null ;

           try {

              reader = request.getReader();

              String line;

               while ((line = reader.readLine()) != null ) {

                   sb.append(line).append( '\n' );

              }

               if (sb.length() > 1) {

                   sb.replace(sb.length() - 1, sb.length(), "" );

              }

          }

           catch (IOException e) {

               logger .info( "RequestUtil,IOException:" + e);

          }

           finally {

               if (reader != null ) {

                    try {

                        reader.close();

                   }

                    catch (IOException e) {

                         logger .info( "RequestUtil,IOException:" + e);

                   }

              }

          }

          String str = sb.toString();

           logger .info( "Request Result:" + str);

           return str;