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 ();
 }