Druid和JdbcTemplate使用

准备好maven包

            com.alibaba
            druid
            1.1.14
        
        
            org.springframework
            spring-beans
            5.0.0.RELEASE
        

        
            org.springframework
            spring-core
            5.0.0.RELEASE
        

        
            org.springframework
            spring-context
            5.0.0.RELEASE
        

        
        
            mysql
            mysql-connector-java
            5.1.6
        

        
        
            org.springframework
            spring-jdbc
            5.0.0.RELEASE
        
        
            org.springframework
            spring-tx
            5.0.0.RELEASE
        

druid.properties配置文件

driverClassName=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/demo
username=root
password=543241338
initialSize=5
maxActive=10
maxWait=3000

使用druid连接池

InputStream resourceAsStream = MyClass.class.getClassLoader().getResourceAsStream("conf/druid.properties");
Properties properties = new Properties();
 properties.load(resourceAsStream);

使用JdbcTemplate

//使用druid源
DataSource dataSource = DruidDataSourceFactory.createDataSource(properties);
JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
//查询数据库自动转换到实体模型
List rowMapper = jdbcTemplate.query("SELECT name,age FROM users", new BeanPropertyRowMapper<>(UserModel.class));
System.out.println(rowMapper.get(0).getName());

实体模型

public class UserModel {
    private String name;
    private Integer age;


    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}