package com.cz.util;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

public class Common {

   /**
   * 从request中获得参数Map，并返回可读的Map
   * 
   * @param request
   * @return
   */
  @SuppressWarnings("unchecked")
  public static Map getParameterMap(HttpServletRequest request) {
    // 参数Map
    Map properties = request.getParameterMap();
    // 返回值Map
    Map returnMap = new HashMap();
    Iterator entries = properties.entrySet().iterator();
    Map.Entry entry;
    String name = "";
    String value = "";
    while (entries.hasNext()) {
      entry = (Map.Entry) entries.next();
      name = (String) entry.getKey();
      Object valueObj = entry.getValue();
      if(null == valueObj){
        value = "";
      }else if(valueObj instanceof String[]){
        String[] values = (String[])valueObj;
        for(int i=0;i<values.length;i++){
          value = values[i] + ",";
        }
        value = value.substring(0, value.length()-1);
      }else{
        value = valueObj.toString();
      }
      returnMap.put(name, value);
    }
    return returnMap;
  }
}