实用的request接收值的工具类

 
import java.io.UnsupportedEncodingException;

import javax.servlet.http.HttpServletRequest;


public class ParamUtil {
     
    
    public static String getGBKStr(HttpServletRequest request, String s) {
        String str = "";
        try {
             String temp = request.getParameter(s);
             if (temp == null)
                 return str;
             else
                 str = ISO2GBK(temp.trim());
        } catch (Exception e){}
        return str;
    }
    
    public static String getString(HttpServletRequest request, String s) {
        String str = "";
        try {
            String temp = request.getParameter(s).trim();            
            if (temp == null)
                return str;
            else
                str = temp;
        } catch (Exception e){}
        return str;
    }

    
    
    public static String getStringGBK(HttpServletRequest request, String s) {
        String str = "";
        try {
             String temp = ISO2GBK(request.getParameter(s).trim());
             if (temp == null)
                 return str;
             else
                 str = temp;
        } catch (Exception e){}
        return str;
    }


    
    public static String getString2(HttpServletRequest request, String s) {
        String str = " ";
        try {
             String temp = request.getParameter(s);
             if (temp == null)
                 return str;
             else
                 str = temp;
        } catch (Exception e){}
        return str;
    }
    
    public static int getInt(HttpServletRequest request,String s) {
        int i = 0;
        try {
             String temp = getString(request,s);
             if (temp.equals(""))
                 return i;
             else
                 i = Integer.parseInt(temp);
        } catch (NumberFormatException e) {}
        return i;
    }
    
    public static long getLong(HttpServletRequest request,String s) {
        long l = 0;
        try {
             String temp = getString(request,s);
             if (temp.equals(""))
                 return l;
             else
                 l = Long.parseLong(temp);
        } catch (NumberFormatException e) {}
        return l;
    }

    public static float getFloat(HttpServletRequest request,String s) {
        float f = 0.0f;
        try {
             String temp = getString(request,s);
             if (temp.equals(""))
                 return f;
             else
                 f = Float.parseFloat(temp);
        } catch (NumberFormatException e) {}
        return f;
    }
    
    public static double getDouble(HttpServletRequest request,String s) {
        double d = 0;
        try {
             String temp = getString(request,s);
             if (temp.equals(""))
                 return d;
             else
                 d = Double.parseDouble(temp);
        } catch (NumberFormatException e) {}
        return d;
    }
    public static String[] getValues(HttpServletRequest request,String s) {
        return request.getParameterValues(s);
    }
    
    public static String ISO2GBK(String s) {
        if (s == null){
            s = "";
        } else {
            try {
                s = new String(s.getBytes("ISO-8859-1"),"GBK");
            } catch(UnsupportedEncodingException e) {
                System.out.println("转码成功");
            }
        }
        return s;
    }
    
}