import java.sql.SQLException;import org.apache.commons.dbutils.QueryRunner;import com.mchange.v2.c3p0.ComboPooledDataSource;public class DBUtilsDemo1 {//dbutils 只是帮我们简化了CRUD 的代码， 但是连接的创建以及获取工作。 不在他的考虑范围//QueryRunner主要是这个类public static void main(String[] args) throws SQLException {//本部分演示QueryRunner类的增加，删除，更新//结合C3p0的配置文件的使用方式，直接一行代码获取连接QueryRunner queryRunner=new QueryRunner(new ComboPooledDataSource());//增加String sql="insert into blank values (null,?,?)";//删除String sql2="delete from blank where id=?";//更新String sql3="update blank set money=? where id=?";//直接执行就可以了//queryRunner.update(sql,"testroot",20000000);//删除的执行语句//queryRunner.update(sql2,1);//更新的执行语句queryRunner.update(sql3,800000,3);}
}

import java.sql.ResultSet;
import java.sql.SQLException;import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.ResultSetHandler;import com.mchange.v2.c3p0.ComboPooledDataSource;
import com.sun.swing.internal.plaf.basic.resources.basic;public class DBUtilDemo2 {
//演示查询一条或者多条数据库中的信息public static void main(String[] args) throws SQLException {//首先一条语句获得数据库的连接QueryRunner queryRunner = new QueryRunner(new ComboPooledDataSource());//然后使用ResultSetHandler(这种不是框架，属于常规操作)Account  accoun =  queryRunner.query("select * from blank where id = ?", new ResultSetHandler<Account>(){public Account handle(ResultSet rs) throws SQLException {Account account=new Account();while(rs.next()){String name=rs.getString("name");int money=rs.getInt("money");account.setName(name);account.setMoney(money);}return account;}},5);System.out.println(accoun.getName()+"========"+accoun.getMoney());}
}

public class DBUtilDemo2 {
//演示查询一条或者多条数据库中的信息public static void main(String[] args) throws SQLException {//首先一条语句获得数据库的连接QueryRunner queryRunner = new QueryRunner(new ComboPooledDataSource());//然后使用ResultSetHandler(这种不是框架，属于常规操作)Account  accoun =  queryRunner.query("select * from blank where id = ?", new BeanHandler<Account>(Account.class),5);System.out.println(accoun.getName()+"========"+accoun.getMoney());//testroot========20000000
    }
}

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.ResultSetHandler;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;import com.mchange.v2.c3p0.ComboPooledDataSource;
import com.sun.swing.internal.plaf.basic.resources.basic;public class DBUtilDemo2 {
//演示查询一条或者多条数据库中的信息public static void main(String[] args) throws SQLException {//首先一条语句获得数据库的连接QueryRunner queryRunner = new QueryRunner(new ComboPooledDataSource());//BeanListHandler获得数据库的全部信息List<Account> list= queryRunner.query("select * from blank", new BeanListHandler<Account>(Account.class));//遍历输出int len=list.size();for(int i=0;i<len;i++){Account blank=list.remove(0);System.out.println(blank.getName()+"====="+blank.getMoney());}}
}

public class Account {public String name;public int money;public String getName() {return name;}public void setName(String name) {this.name = name;}public int getMoney() {return money;}public void setMoney(int money) {this.money = money;}}