Spring boot整合mysql和druid

集成mysql数据库

引入依赖

mysql

mysql-connector-java

runtime

org.springframework.boot

spring-boot-starter-jdbc

添加数据库配置

Spring boot项目的resources目录下的applicataion.properties

# datasource

spring.datasource.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8

spring.datasource.username=root

spring.datasource.password=root

spring.datasource.driver-class-name=com.mysql.jdbc.Driver

设计数据库表和实体

create table user(

id bigint primary key auto_increment,

name varchar(10) not null ,

age int default 0

);

insert into user (name, age) VALUES ('jack', 12);

public class User {

private int id;//id

private String name;//姓名

private int age;//年龄

//get set省略

@Override

public String toString() {

return "User{"+

"id="+ id +

", name='"+ name + '\'' +

", age="+ age +

'}';

}

}

集成测试

在test文件夹下的SpringBootApplication.java中编写测试类

@RunWith(SpringRunner.class)

@SpringBootTest

public class SpringBootMysqlApplicationTests {

@Resource

private JdbcTemplate jdbcTemplate;

@Test

public void contextLoads() {

String sql = "select id, name, age from user";

List userList = jdbcTemplate.query(sql, new RowMapper() {

@Override

public User mapRow(ResultSet resultSet, int i) throws SQLException {

User user = new User();

user.setId(resultSet.getInt("id"));

user.setName(resultSet.getString("name"));

user.setAge(resultSet.getInt("age"));

return user;

}

});

System.out.println("----------查询结果如下：----------");

//下面使用JDK8的新特性，如果没有安装JDK8的可以修改为普通的for循环

userList.stream().forEach(user -> {System.out.println(user.toString());});

}

}

集成Druid

引入依赖

com.alibaba

druid-spring-boot-starter

1.1.10

添加配置

# druid,更多属性可以看官网

spring.datasource.druid.initial-size=5

spring.datasource.druid.max-active=20

spring.datasource.druid.min-idle=5

spring.datasource.druid.max-wait=60000

spring.datasource.druid.filter.config.enabled=true

# 配置StatFilter

spring.datasource.druid.filter.stat.db-type=mysql

spring.datasource.druid.filter.stat.log-slow-sql=true

spring.datasource.druid.filter.stat.slow-sql-millis=2000

#

# 配置WallFilter

spring.datasource.druid.filter.wall.enabled=true

spring.datasource.druid.filter.wall.db-type=mysql

spring.datasource.druid.filter.wall.config.delete-allow=false

spring.datasource.druid.filter.wall.config.drop-table-allow=false

开启Druid功能

@Configuration

public class DruidConfiguration {

@Bean

public ServletRegistrationBean statViewServle() {

ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");

//IP白名单

//servletRegistrationBean.addInitParameter("allow", "127.0.0.1, 127.0.0.1");

//IP黑名单

//servletRegistrationBean.addInitParameter("deny", "127.0.0.1, 127.0.0.1");

servletRegistrationBean.addInitParameter("loginUsername", "druid");

servletRegistrationBean.addInitParameter("loginPassword", "12345678");

//是否允许重置数据

servletRegistrationBean.addInitParameter("resetEnable", "false");

return servletRegistrationBean;

}

@Bean

public FilterRegistrationBean druidStatFilter() {

FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());

//添加过滤规则

filterRegistrationBean.addUrlPatterns("/*");

//忽略过滤的格式

filterRegistrationBean.addInitParameter("exclusions", "*.js, *.jpg, *.png, *.css, /druid/*");

return filterRegistrationBean;

}

}

浏览效果