java 获取request中的请求参数代码详解

Map<String, String[]>maps = request.getParameterMap();for (Map.Entry<String, String[]> entry : maps.entrySet()) {  String cs = entry.getKey() + ":"+Arrays.toString(entry.getValue())+";";}

public String getRequestData(HttpServletRequest httpServletRequest){  HttpServletRequestWrapper httpServletRequestWrapper = new HttpServletRequestWrapper(httpServletRequest);  StringBuilder sb = new StringBuilder();  BufferedReader reader = null;  InputStreamReader inputStreamReader=null;  ServletInputStream servletInputStream =null;  try {   servletInputStream = httpServletRequestWrapper.getInputStream();   inputStreamReader=new InputStreamReader (servletInputStream, Charset.forName("UTF-8"));   reader = new BufferedReader(inputStreamReader);   String line = "";   while ((line = reader.readLine()) != null) {    sb.append(line);   }  } catch (IOException e) {   return "";  }finally {   try {    if(servletInputStream!=null){     servletInputStream.close();    }    if(inputStreamReader!=null){     inputStreamReader.close();    }    if(reader!=null){     reader.close();    }   } catch (IOException e) {       }  }  return sb.toString (); }