Get all parameters and parameter names in the request

Get all parameters and parameter names in the request (parameter names are automatically obtained) - [ Java ]

There are two methods in request
request.getParameterMap();
request.getParameterNames();
I want to get it using both methods.
1。用request.getParameterNames();
Enumeration enu=request.getParameterNames();
while(enu.hasMoreElements()){
String paraName=(String)enu.nextElement();
System.out.println(paraName+": "+request.getParameter(paraName));
}

2。request.getParameterMap();
Map map=request.getParameterMap();
    Set keSet=map.entrySet();
    for(Iterator itr=keSet.iterator();itr.hasNext();){
        Map.Entry me=(Map.Entry)itr.next();
        Object ok=me.getKey();
        Object ov=me.getValue();
        String[] value=new String[1];
        if(ov instanceof String[]){
            value=(String[])ov;
        }else{
            value[0]=ov.toString();
        }

        for(int k=0;k<value.length;k++){
            System.out.println(ok+"="+value[k]);
        }
      }