paramutils.java

来自「JSP新闻发布系统 JSP新闻发布系统」· Java 代码 · 共 77 行

package net.ijsp.news.util;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: ijsp.net </p>
 * @author ccjsmile
 * @version 1.0
 */
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;

public class ParamUtils {

  public ParamUtils()
   {
   }

   public static String getString(HttpServletRequest request, String s, String defaultString)
       throws Exception
   {
       String s1 = getString(request, s);
       if(s1 == null)
           return defaultString;
       else
           return s1;
   }

   public static int getInt(HttpServletRequest request, String s, int defaultInt)
   {
       int j=0;
       try
       {
           String temp = getString(request, s);
           if(temp == null) {
               j = defaultInt;
            }else{
               j = Integer.parseInt(temp);
           }
       }catch(NumberFormatException e){
           j=0;
       }
       return j;
   }

   public static long getLong(HttpServletRequest request, String s, long defaultLong)
   {
       long l = 0;
       try
       {
           String temp = getString(request, s);
           if(temp == null){
               l = defaultLong;
           }else{
               l = Long.parseLong(temp);
           }
       }
       catch(NumberFormatException e)
       {
           l=0;
       }
       return l;
   }

   private static String getString(HttpServletRequest request, String s)
   {
       String temp = null;
       try
       {
           temp = request.getParameter(s).trim();
       }
       catch(Exception exception) { }
       return temp;
   }

}