issuefilter.java

JSP+SQL2005 MVC模式 下载后改DB.java类的SQL密码就可用。

package com.model.tools;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class IssueFilter implements Filter {
	private FilterConfig filterconfig;
	public  void destroy(){
		this.filterconfig=null;
	}

	
	public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain)throws IOException,
	ServletException{
		String num=request.getParameter("num");
		String iss_user=request.getParameter("issUser");
		String iss_title=request.getParameter("issTitle");
		String iss_content=request.getParameter("issContent");
		boolean mark = true;
		String result="";
		if(iss_user==null||iss_user.equals("")){
			result += "*请输入发布人！&nbsp";
			mark=false;
		}
		if(iss_title==null||iss_title.equals("")){
			result+=" *请输入发布主题！ ";
			mark=false;
		}
		if(iss_content==null||iss_content.equals("")){
			result+=" *请输入发布内容！ ";
			mark=false;
		}
		if(!mark){
			request.setAttribute("doResult",result);
			RequestDispatcher rd=request.getRequestDispatcher("issue.jsp?num="+num);
			rd.forward(request,response);
		}
		else{
			chain.doFilter(request, response);
		}
		
	}
			

	

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init(FilterConfig filterconfig) throws ServletException {
		this.filterconfig = filterconfig;
		// Put your code here
	}

}