Jdbctemplate required Jar package and sample entry program

This blog will give a brief introduction to the use of Jdbctemplate. The following links are the jar packages required by Jdbctemplate, there are 5 in total

Link: https://pan.baidu.com/s/1RWQXPMk164zJ3mlcejJpHA 
Extraction code: j5pi 
1. Import the 5 downloaded Jar packages into the project

 2. The tool class JDBCUtils needed to write code

package com.Utils;
import com.alibaba.druid.pool.DruidDataSourceFactory;
import javax.sql.DataSource;
import java.io.IOException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;

/**
 * 以下链接Druid的工具类
 */
public class JDBCUtil {
    //创建Datasource对象
    private static DataSource ds;
    static {
        //创建Properties对象
        Properties pro = new Properties();
        try {
            pro.load(JDBCUtil.class.getClassLoader().getResourceAsStream("druid.properties"));
            ds=DruidDataSourceFactory.createDataSource(pro);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * 返回链接对象
     */
    public static Connection getconnection() throws SQLException {
        return ds.getConnection();
    }
    /**
     * 关闭流
     */
    public static void close(Statement sta,Connection con){
        if(sta != null){
            try {
                sta.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        if(con !=null){
            try {
                con.close();//归还连接
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
    /**
     * 关闭三个流
     */
    public static void close(ResultSet rs,Statement sta,Connection con){
        if(rs !=null){
            try {
                rs.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        if(sta !=null){
            try {
                sta.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        if(con !=null){
            try {
                con.close();//归还连接
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
    /**
     * 获取数据源
     */
    public static DataSource getDatasource(){
        return ds;
    }
}

3. Write the basic program of JDBCTemplate

package com.Jdbctemplate;
import com.Utils.JDBCUtil;
import org.springframework.jdbc.core.JdbcTemplate;

/**
 * 以下程序是使用Jdbctemplate初级方法
 */
public class test {
    public static void main(String[] args) {
        //1、导入5个Jar包
        //2、新建对象
        JdbcTemplate jdbc = new JdbcTemplate(JDBCUtil.getDatasource());
        //3、编写sql语句
        String  sql = "update student set age = 20 where name=?";
        //4、执行修改语句
        int count = jdbc.update(sql, "大王");
        //5、打印输出
        System.out.println(count);
    }
}

4. Run the program, the number 1 means success

I hope I can bring you some help!