问题描述

servlet求注释，越详细越好，谢谢！

package com.blog.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;

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

import com.blog.dao.WordDao;
import com.blog.entity.Word;

public class WordServlet extends HttpServlet {

public WordServlet() {    super();}public void destroy() {    super.destroy(); // Just puts ""destroy"" string in log    // Put your code here}public void doGet(HttpServletRequest request HttpServletResponse response)        throws ServletException IOException {        doPost(request response);}public void doPost(HttpServletRequest request HttpServletResponse response)        throws ServletException IOException {    response.setContentType(""text/html"");    PrintWriter out = response.getWriter();    String action=request.getParameter(""action"");    WordDao worddao=new WordDao();    if(action.equals(""select"")){        List wordlist=worddao.selectAll();        int i=wordlist.size();        if(i>0){            request.setAttribute(""i"" i);            request.setAttribute(""wordlist"" wordlist);            request.getRequestDispatcher(""admin/wordManage.jsp"").forward(request response);        }    }    if(action.equals(""fontselect"")){        List wordlist=worddao.selectAll();        int i=wordlist.size();        if(i>0){            request.setAttribute(""i"" i);            request.setAttribute(""wordlist"" wordlist);            request.getRequestDispatcher(""font/liuyan.jsp"").forward(request response);        }    }    if(action.equals(""delete"")){        int id=Integer.parseInt(request.getParameter(""id""));        if(worddao.deleteWord(id)){            request.getRequestDispatcher(""WordServlet?action=select"").forward(request response);        }    }    if(action.equals(""add"")){        SimpleDateFormat formater=new SimpleDateFormat(""yyyy'年'MM'月'dd'日' HH:mm:ss"");        String time=formater.format(new Date());        Word word=new Word();        word.setWord_title(request.getParameter(""title""));        word.setWord_content(request.getParameter(""content""));        word.setWord_sdTime(time);        word.setWord_author(request.getParameter(""author""));        if(worddao.addWord(word)){            request.getRequestDispatcher(""WordServlet?action=fontselect"").forward(request response);        }    }}public void init() throws ServletException {    // Put your code here}

}

解决方案

建议楼主从sevlet基础学习，搞懂基本知识了，代码就看懂了，如果还看不懂，那就是java基础不过关，先看java基础