springboot整合 druid
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来查找
先加以下坐标:
使用的数据库介绍:
配置连接数据库:
spring: datasource: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/spring?serverTimezone=UTC username: root password: 123456
定义类:
package com.spring1.domain; import com.baomidou.mybatisplus.annotation.TableName; @TableName("student") public class student { private Integer id; private String name; private String age; @Override public String toString() { return "student{" + "id=" + id + ", name='" + name + '\'' + ", age='" + age + '\'' + '}'; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getAge() { return age; } public void setAge(String age) { this.age = age; } }
测试:
package com.spring1; import com.spring1.dao.StudentDao; import com.spring1.domain.student; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; @SpringBootTest class Spring1ApplicationTests { @Autowired private StudentDao studentDao; @Test void contextLoads() { System.out.println(studentDao.selectList(null)); } }
[student{id=1000, name='Li Ming', age='22'}, student{id=1001, name='Danny', age='17'}, student{id=1002, name='Li Gang', age='22'}, student{id=1003, name='Jenny', age='19'}, student{id=1004, name='Jim', age='19'}]
添加druid
添加坐标:
配置修改:
spring: datasource: druid: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/spring?serverTimezone=UTC username: root password: 123456
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