mysql操作java源码,java使用JDBC连接MySQL数据库操作电子图书增删改查项目实例

package dao;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.util.ArrayList;

import java.util.List;

import entity.Booking;

public class BookingDao extends BaseDao{

public List search(String sql,Object...params){

List list =new ArrayList();

Connection conn=this.getconn();

PreparedStatement pst=null;

ResultSet rs=null;

try {

pst=this.prepareStatement(conn, sql, params);

rs=pst.executeQuery();

while(rs.next()){

Booking wor=new Booking();

wor.setId(rs.getInt(1));

wor.setCategoryId(rs.getInt(2));

wor.setTitle(rs.getString(3));

wor.setSummary(rs.getString(4));

wor.setUploaduser(rs.getString(5));

wor.setCreatedate(rs.getString(6));

list.add(wor);

}

} catch (SQLException e) {

e.printStackTrace();

}finally{

closeAll(conn, pst, rs);

}

return list;

}

public List findAll(){

String sql="SELECT * FROM `Book`";

return search(sql);

}

public int insert(Booking t){

String str="INSERT INTO `book`(categoryId,title,summary,uploaduser,createdate) VALUE(?,?,?,?,?)";

return executeUpdate(str, new Object[]{t.getCategoryId(),t.getTitle(),t.getSummary(),t.getUploaduser(),t.getCreatedate()});

}

public int update(Booking r){

String sql="UPDATE `book` SET `categoryId`=?,`title`=?,`summary`=?,`uploaduser`=?,`createdate`=? WHERE id=?";

return executeUpdate(sql, new Object[]{r.getCategoryId(),r.getTitle(),r.getSummary(),r.getUploaduser(),r.getCreatedate(),r.getId()});

}

public int delete(Booking e){

String sql="DELETE FROM `book` WHERE id=?";

return executeUpdate(sql, new Object[]{e.getId()});

}

}