package com.yn.service;import java.sql.*;
import java.util.*;import com.yn.dao.SqlHelper;
import com.yn.domain.News;
/*** * @author nickY9527**/public class NewsService {//编写一个搜索新闻的函数public ArrayList<News> searchNews(String keys) {ArrayList<News> al = null;String sql = "select * from news where newsTitle = '"+keys+"'";try {//完成查询ResultSet rs = SqlHelper.executeQuery(sql, null);//将rs -> ArrayList[News对象]  业务逻辑二次封装al = new ArrayList<News>();while(rs.next()) {News news = new News();news.setNewsId(rs.getInt(1));news.setNewsTitle(rs.getString(2));news.setNewsDate(rs.getDate(3));news.setNewsContent(rs.getString(4));al.add(news);}        } catch (Exception e) {// TODO Auto-generated catch block
            e.printStackTrace();}finally {//关闭资源
            SqlHelper.close(SqlHelper.getRs(), SqlHelper.getPs(), SqlHelper.getCt());}return al;}}

package com.yn.view;import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.sql.ResultSet;
import java.util.ArrayList;import com.yn.domain.News;
import com.yn.service.NewsService;public class NewsSystemFrame {public static void main(String[] args) throws Exception {InputStreamReader isr = new InputStreamReader(System.in);BufferedReader br = new BufferedReader(isr);System.out.println("********欢迎登录到系统********");System.out.println("****请输入用户名****");String userId = br.readLine();System.out.println("****请输入用户名****");String pwd = br.readLine();if("10000".equals(userId)&&"10000".equals(pwd)) {while(true) {System.out.println("****管理界面****");System.out.println("请选择你的操作");System.out.println("search \t查询新闻");System.out.println("add \t添加新闻");System.out.println("exit \t退出系统");    String operType = br.readLine();if(operType.equals("search")) {//接收用户的输入System.out.println("请输入关键字");String keys = br.readLine();//调用service完成任务NewsService ns = new NewsService();ArrayList<News> al = ns.searchNews(keys);for(News news: al) {System.out.println(news.getNewsId()+"\t"+news.getNewsTitle()+"\t"+news.getNewsDate().toString()+"\t"+news.getNewsContent());}}else if(operType.equals("add")) {System.out.println("请输入新闻的标题");String title = br.readLine();System.out.println("请输入新闻的内容");String content = br.readLine();}else if(operType.equals("exit")) {System.exit(0);}}}else {}}
}