url/GuanliyuanImpl.java

package dao.impl;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

import dao.GuanliyuanDao;
import entity.Guanliyuan;

public class GuanliyuanImpl implements GuanliyuanDao{

	public Guanliyuan findById(String id) {
		Guanliyuan acyc=new Guanliyuan();
		try {
			
		    Connection conn = JDBCUtil.getConnection();
		    String sql = "select*from guanliyuan where id = ?";
		    PreparedStatement prestm=conn.prepareStatement(sql);
		    prestm.setInt(1, Integer.valueOf(id));
		    ResultSet rs=prestm.executeQuery();
		    
		    	while(rs.next()) {
		    		Guanliyuan guanliyuan=new Guanliyuan();
					guanliyuan.setId(rs.getInt("id"));
					guanliyuan.setYonghumingyc(rs.getString("yonghumingyc"));
					guanliyuan.setMimayc(rs.getString("mimayc"));
					guanliyuan.setJiaoseyc(rs.getString("jiaoseyc"));
					acyc=guanliyuan;
		    	}
				rs.close();
				prestm.close();
				conn.close();
			}
			catch(Exception e) {
				e.printStackTrace();
			}
			return acyc;
	}


	@Override
	public List<Guanliyuan> findAll() {
		ArrayList<Guanliyuan> zhushus=new ArrayList<Guanliyuan>();
		try {
			Connection conn = JDBCUtil.getConnection();
			
			String sqlyc ="select *from guanliyuan";
			Statement stsyc =conn.createStatement();
			ResultSet rsyc=stsyc.executeQuery(sqlyc);
			
			while(rsyc.next()) {
				Guanliyuan guanliyuan=new Guanliyuan();
				guanliyuan.setId(rsyc.getInt("id"));
				guanliyuan.setYonghumingyc(rsyc.getString("yonghumingyc"));
				guanliyuan.setMimayc(rsyc.getString("mimayc"));
				guanliyuan.setJiaoseyc(rsyc.getString("jiaoseyc"));
				zhushus.add(guanliyuan);
			}
			rsyc.close();
			stsyc.close();
			conn.close();
		}
		catch(Exception e) {
			e.printStackTrace();
		}
		// TODO 自动生成的方法存根
		return zhushus;
	}


	@Override
	public int modify(Guanliyuan guanliyuan) {
		try {
			Connection conn = JDBCUtil.getConnection();
			
			String sqlyc ="update guanliyuan set yonghumingyc=?,mimayc=?,jiaoseyc=? where id=?";
			PreparedStatement prestmyc=conn.prepareStatement(sqlyc);
			prestmyc.setString(1,guanliyuan.getYonghumingyc());
			prestmyc.setString(2,guanliyuan.getMimayc());
			prestmyc.setString(3,guanliyuan.getJiaoseyc());
			prestmyc.setInt(4,guanliyuan.getId());
			prestmyc.executeUpdate();
			prestmyc.close();
			conn.close();
		}
		catch(Exception e) {
			e.printStackTrace();
		}
		return 0;
	}


	@Override
	public int create(Guanliyuan guanliyuan) {
		try {
			Connection conn = JDBCUtil.getConnection();
			String sqlyc ="Insert into guanliyuan (yonghumingyc,mimayc,jiaoseyc) values(?,?,?)";
			PreparedStatement prestmyc=conn.prepareStatement(sqlyc);
			prestmyc.setString(1,guanliyuan.getYonghumingyc());
			prestmyc.setString(2,guanliyuan.getMimayc());
			prestmyc.setString(3,guanliyuan.getJiaoseyc());
			prestmyc.executeUpdate();
			prestmyc.close();
			conn.close();
		}
		catch(Exception e) {
			e.printStackTrace();
		}
		return 0;
	}


	@Override
	public int remove(Guanliyuan guanliyuan) {
		int flagyc=0;
		try {
			Connection conn = JDBCUtil.getConnection();
			String sqlyc ="delete from guanliyuan where id=?";
			PreparedStatement prestmyc=conn.prepareStatement(sqlyc);
			prestmyc.setInt(1, guanliyuan.getId());
			flagyc = prestmyc.executeUpdate();
			prestmyc.close();
			conn.close();
		}
		catch(Exception e) {
			e.printStackTrace();
		}
		return flagyc;
	}


	@Override
	public Guanliyuan findByUsername(String yonghuming) {
		Guanliyuan acyc=new Guanliyuan();
		try {
			
		    Connection conn = JDBCUtil.getConnection();
		    String sql = "select*from guanliyuan where yonghumingyc = ?";
		    PreparedStatement prestm=conn.prepareStatement(sql);
		    prestm.setString(1, yonghuming);
		    ResultSet rs=prestm.executeQuery();
		    
		    	while(rs.next()) {
		    		Guanliyuan guanliyuan=new Guanliyuan();
					guanliyuan.setId(rs.getInt("id"));
					guanliyuan.setYonghumingyc(rs.getString("yonghumingyc"));
					guanliyuan.setMimayc(rs.getString("mimayc"));
					guanliyuan.setJiaoseyc(rs.getString("jiaoseyc"));
					acyc=guanliyuan;
		    	}
				rs.close();
				prestm.close();
				conn.close();
			}
			catch(Exception e) {
				e.printStackTrace();
			}
			return acyc;
	}

}