Spring boot整合mysql和druid

Spring boot整合mysql和druid

项目源码github:https://github.com/superRabbitMan/spring-boot-mysql

集成mysql数据库

引入依赖

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>

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<User> userList = jdbcTemplate.query(sql, new RowMapper<User>() {
@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

Druid官网：https://github.com/alibaba/druid

引入依赖

<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.10</version>
</dependency>

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