java打印request请求参数所有信息

Map<String, String> map = new HashMap<String, String>();
Enumeration paramNames = request.getParameterNames();
while(paramNames.hasMoreElements()) {
String paramName = (String) paramNames.nextElement();
String[] paramValues = request.getParameterValues(paramName);
if (paramValues.length == 1) {
if ( paramValues[0].length() != 0) {
map.put(paramName, paramValues[0]);
}
}
}
System.out.println("----------------------------------------------"+map+"---------------------------------------");