JDBC工具--commons-dautils1.4jar

package test;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.List;

import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;

public class DbUtil {
static{
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static Connection getConection() {
Connection conn = null;
try {
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/czq", "root", "123456");
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return conn;
}

public static int excute(String sql){
QueryRunner qr=new QueryRunner();
Connection conn= DbUtil.getConection();
int n=0;
try {
n=qr.update(conn, sql);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

return n;
}
public static<T> List<T> excuteR(String sql,Class<T> clz){
List<T> ls =null;
QueryRunner qr=new QueryRunner();
Connection conn= DbUtil.getConection();
try {
ls=qr.query(conn, sql,new BeanListHandler<T>(clz));
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return ls;

}
public static void main(String[] args) {
System.out.println(excuteR("select * from employee", Employee.class));
}
}

JDBC工具--commons-dautils1.4jar

原文：https://www.cnblogs.com/czqmax/p/11358127.html