url.java

学校期间做的实践项目

package com.sw06701.util;


import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletRequest;

import com.sw06701.action.LoginAction;
import com.sw06701.common.GlobalInfo;
import com.sw06701.formbean.LoginBean;

import java.io.IOException;



/**
 * @author 胡华平
 *@version 1.0
 * Time: 10:32:22 AM
 * To change this template use Options | File Templates.
 */
public class Url {

    /**
     * 页面导向方法
     * 不传对象参数，只导向页面
     * @param response
     * @param toURL          传向的地址
     */

    //不传对象参数，只导向页面

    public static void doForward(HttpServletResponse response, String toURL) {
        try {
            response.sendRedirect(toURL);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
  /**
   * 不带参数的转向页
   * @param request
   * @param response
   * @param toURL     //转向地址
   */
    public static void doForward(HttpServletRequest request, HttpServletResponse response, String toURL) {
        RequestDispatcher rd = request.getRequestDispatcher(toURL);
        try {
            rd.forward(request, response);
        } catch (ServletException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * 页面导向方法
     * @param request
     * @param response
     * @param att        传向目标的对象
     * @param toURL          传向的地址
     */
    public static void doForward(HttpServletRequest request,
                                 HttpServletResponse response, Object att, String toURL) {
        LoginBean result =(LoginBean) att;        //要传的参数对象。需要重新造型回去。
     
        RequestDispatcher rd = request.getRequestDispatcher(toURL);
        try {
        	   //判断是否成功
            if(LoginAction.valuser(result)){
           	 //将用户信息放入Session
            	GlobalInfo gloablinfo = new GlobalInfo();
            	gloablinfo.setUid(result.getUid());
            	request.getSession().setAttribute("gloablinfo", gloablinfo);
            //转向成功页面
            	 rd.forward(request, response);
            }else{
            	doError(request, response, "用户名或密码错误！！");
            }
        } catch (ServletException e) {
            System.out.println("ServletException");
            System.out.println(e.toString());
            e.printStackTrace();
        } catch (IOException e) {
            System.out.println("IOException");
            e.printStackTrace();
        }
    }

    /**
     * 页面导向方法
     * @param response
     * @param errormessage          错误信息
     */

    //导向错误处理页
    public static void doError(HttpServletRequest request, HttpServletResponse response, String errormessage) {
        try {
            request.setAttribute("message", errormessage);
            response.sendRedirect(request.getContextPath()+"/web/jsp/isErrorPage.jsp");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    /**
     * @param request
     * @param response
     * @param att      附件1
     * @param att1     附件2
     * @param toURL    地址
     */
    public static void doForward(HttpServletRequest request,
                                 HttpServletResponse response, Object att, Object att1, String toURL) {
        try {
            request.setAttribute("att", att);//要传的参数对象。需要重新造型回去。
            request.setAttribute("att1", att1);
            RequestDispatcher rd = request.getRequestDispatcher(toURL);
            rd.forward(request, response);
        } catch (ServletException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}