notevalidate.java

java web开发宝典源代码

package com.yxq.filter;

import java.io.IOException;

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;
import javax.servlet.http.HttpServletRequest;

import com.yxq.bean.Change;
import com.yxq.bean.NoteSingle;

public class NoteValidate implements Filter {
	private FilterConfig filterconfig=null;

	public void destroy() {
		filterconfig=null;
	}

	public void doFilter(ServletRequest Srequest,ServletResponse Sresponse,FilterChain chain) throws IOException, ServletException {
		HttpServletRequest request=(HttpServletRequest)Srequest;
		RequestDispatcher rd=null;
		String actionName=Change.StrSub(request.getPathInfo());
		if(actionName==null||actionName.equals("")){
			System.out.println("请选择操作！");
		}
		else{
			if(actionName.equals("noteAddAction")){
				
				String title=Change.EncodingChange(request.getParameter("title"));
				String content=Change.EncodingChange(request.getParameter("content"));
				String sender=Change.EncodingChange(request.getParameter("sender"));
				String sex=Change.EncodingChange(request.getParameter("sex"));
				String qqnum=Change.EncodingChange(request.getParameter("qqnum"));
				String from=Change.EncodingChange(request.getParameter("from"));
				NoteSingle notesingle=new NoteSingle();
				
				boolean mark=true;
				String message="";
				if(title==null||title.equals("")){
					mark=false;
					message+="<li>请输入 <b>留言主题！</b></li>";					
				}
				if(content==null||content.equals("")){
					mark=false;
					message+="<li>请输入 <b>留言内容！</b></li>";					
				}
				if(sender==null||sender.equals("")){
					mark=false;
					message+="<li>请输入 <b>留言者！</b></li>";					
				}
				if(sex==null||sex.equals("")){
					mark=false;
					message+="<li>请选择 <b>性别！</b></li>";					
				}
				if(qqnum==null||qqnum.equals("")){
					mark=false;
					message+="<li>请输入 <b>QQ号码！</b></li>";					
				}
				if(from==null||from.equals("")){
					mark=false;
					message+="<li>请输入 <b>来在何方！</b></li>";					
				}			
				
				
				notesingle.setNoteTitle(title);
				notesingle.setNoteContent(content);
				notesingle.setNoteSender(sender);
				notesingle.setSenderSex(sex);
				notesingle.setSenderQQ(qqnum);
				notesingle.setSenderFrom(from);
				request.setAttribute("notesingle",notesingle);
				
				if(!mark){
					request.setAttribute("message",message);
					rd=request.getRequestDispatcher("/view/default.jsp");
					rd.forward(Srequest,Sresponse);
				}
				else{
					try{
						Long.parseLong(qqnum);
					}catch(Exception e){
						mark=false;
						message="<li><b>QQ号码</b> 请输入数字！</li>";						
					}
					if(content.length()>2000){
						mark=false;
						message+="<li>输入的 <b>留言内容</b> 最大长度限制为2000个字符！</li>";						
					}
					if(!mark){
						request.setAttribute("message",message);
						rd=request.getRequestDispatcher("/view/default.jsp");
						rd.forward(Srequest,Sresponse);
					}
					else{
						notesingle.setNoteTitle(Change.HTMLChange(title));
						notesingle.setNoteContent(Change.HTMLChange(content));
						notesingle.setNoteSender(Change.HTMLChange(sender));						
						notesingle.setSenderQQ(qqnum);
						notesingle.setSenderFrom(Change.HTMLChange(from));
						request.setAttribute("notesingle",notesingle);	
						if(sex.equals("women"))sex="女";
						else sex="男";
						notesingle.setSenderSex(sex);
						chain.doFilter(Srequest,Sresponse);
					}
				}
			}
			else if(actionName.equals("noteSearchAction")){
				String searchType=request.getParameter("searchType");
				String searchfrom=request.getParameter("searchfrom");
				if(searchType==null)searchType="";
				if(searchfrom==null)searchfrom="form";
				
				if(searchType.equals("searchC")){
					if(searchfrom.equals("form")){
						String subsql=request.getParameter("subsql");
						String sqlvalue=request.getParameter("sqlvalue");
						boolean mark=true;
						if(subsql==null||subsql.equals("")){
							mark=false;
							request.setAttribute("subsqlE","<li>请选择查询条件！</li>");
						}
						else if(subsql.equals("all")){
							chain.doFilter(Srequest,Sresponse);
						}
						else{
							if(sqlvalue==null||sqlvalue.equals("")){
								mark=false;
								request.setAttribute("sqlvalueE","<li>请输入查询关键字！</li>");
							}
							if(!mark){
								rd=request.getRequestDispatcher("/view/default.jsp");
								rd.forward(Srequest,Sresponse);
							}
							else
								chain.doFilter(Srequest,Sresponse);							
						}
					}
					else
						chain.doFilter(Srequest,Sresponse);
				}
				else{
					chain.doFilter(Srequest,Sresponse);
				}				
			}
		}
	}

	public void init(FilterConfig filterconfig) throws ServletException {
		this.filterconfig=filterconfig;
	}
}