oprater.java

图书馆管理系统,从我们导师的实验室(国家重点实验室)带出来的,不过是我们自己开发的,已经提交,没有问题!站长采纳,可别说是偶传的噢!

package booksys;


import java.io.*;
import java.sql.*;


public class oprater extends reader{
	BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
	static String opselect;//function selected
	public oprater(){
			
		}
		
	public oprater(String userid,String pwd){
		}
		
	private void opmenu() throws IOException{
		System.out.println("1、检索用户 2、修改权限 3、删除用户 4、系统初始化 5、退出");
		System.out.println("");
		opselect = in.readLine();
		}
		
	public void welcome() throws Exception{
		users.oprater1.opmenu();
		if(opselect.equals("1")){
			System.out.print("请输入用户昵称：");
			String userid = in.readLine();
			if (userid.equals("")){
				users.browseuser();
				}
			else{
				users user1 = users.selectuser(userid);
				if(user1==null)
				System.out.println("该用户不存在！请选择功能：");
				else 
				System.out.println(user1);			
				}
				users.oprater1.welcome();
			}
			
		if(opselect.equals("2")){
			System.out.print("请输入用户昵称：");
			String userid = in.readLine();			
			System.out.print("请输入用户级别：");
			String type = in.readLine();
			users user1 = users.selectuser(userid);
			if(!users.searchuser(userid)){
				System.out.println("该用户不存在，请重新选择选择：");
				users.oprater1.welcome();			
				}
			else{
				dbconn.conn();
				String sql = "update users set type='"+type+"' "+"where userid='"+userid+"'";
				dbconn.dbupdate(sql);
				dbconn.dbclose();
				System.out.println("");
				System.out.println("原用户级别："+user1.gettype());
				System.out.println("新用户级别："+type);
				System.out.println("");
				System.out.println("用户级别已更新，请继续选择：");
				users.oprater1.welcome();
					}
			}
		
			
		if(opselect.equals("5")){
			System.exit(0);
			}
		}
	
	public void check(){
		}
		
	public boolean change(){
		return true;
		}
	
	private boolean searchusers(String userid){
		return true;
		}
		
//	private void addcountry(countries country){
//		}
	
	private void addpublisher(publishers publish){
		}
		
	private void addauthor(authors author){
		}
		
	private void addstore(stores store){
		}
		
//	private void addusertype(usertypies type){
//		}
		
	private void grantpermission(String userid){
		}
	
	}