Druid是阿里巴巴开源平台上一个数据库连接池实现，它结合了C3P0、DBCP、PROXOOL等DB池的优点，同时加入了日志监控，可以很好的监控DB池连接和SQL的执行情况，可以说是针对监控而生的DB连接池(据说是目前最好的连接池)
一、依赖
为了测试，使用jdbcTemplate
<!-- jdbcTemplate --><dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId></dependency><!-- druid数据库连接池 --><dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.26</version></dependency><!-- mysql connector --><dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope></dependency>
二、Druid配置
druid.properties#数据库设置spring.datasource.driverClassName=com.mysql.jdbc.Driverspring.datasource.url=jdbc:mysql://localhost:3306/uu_core?useUnicode=true&characterEncoding=utf8&autoReconnect=true&useSSL=truespring.datasource.username=rootspring.datasource.password=root#--------------------------# 下面为连接池的补充设置，应用到上面所有数据源中# 初始化大小，最小，最大spring.datasource.initialSize=5spring.datasource.minIdle=1spring.datasource.maxActive=50# 配置获取连接等待超时的时间spring.datasource.maxWait=60000# 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒spring.datasource.timeBetweenEvictionRunsMillis=60000# 配置一个连接在池中最小生存的时间，单位是毫秒spring.datasource.minEvictableIdleTimeMillis=300000spring.datasource.validationQuery=SELECT 1 FROM DUALspring.datasource.testWhileIdle=truespring.datasource.testOnBorrow=falsespring.datasource.testOnReturn=false# 打开PSCache，并且指定每个连接上PSCache的大小spring.datasource.poolPreparedStatements=false#spring.datasource.maxPoolPreparedStatementPerConnectionSize=20# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙spring.datasource.filters=stat,wall,log4j# 通过connectProperties属性来打开mergeSql功能；慢SQL记录spring.datasource.connectionProperties=druid.stat.mergeSql=true;
druid.stat.slowSqlMillis=5000# 合并多个DruidDataSource的监控数据#spring.datasource.useGlobalDataSourceStat=true
三、实例化Druid Datasource
package cn.aduu.config;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import javax.sql.DataSource;
/** * @author zh * @ClassName cn.aduu.config.DruidConfiguration * @Description */@Configuration@PropertySource(value = "classpath:druid.properties")public class DruidConfiguration {
@Bean(destroyMethod = "close", initMethod = "init") @ConfigurationProperties(prefix = "spring.datasource") public DataSource druidDataSource() {
DruidDataSource druidDataSource = new DruidDataSource();
return druidDataSource;
}
/** * 注册一个StatViewServlet * @return */ @Bean public ServletRegistrationBean druidStatViewServlet(){
//org.springframework.boot.context.embedded.ServletRegistrationBean提供类的进行注册. ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(),"/druid/*");
//添加初始化参数：initParams //白名单： servletRegistrationBean.addInitParameter("allow","127.0.0.1");
//IP黑名单 (存在共同时，deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to view this page. servletRegistrationBean.addInitParameter("deny","192.168.1.73");
//登录查看信息的账号密码. servletRegistrationBean.addInitParameter("loginUsername","admin");
servletRegistrationBean.addInitParameter("loginPassword","123456");
//是否能够重置数据. servletRegistrationBean.addInitParameter("resetEnable","false");
return servletRegistrationBean;
}
/** * 注册一个：filterRegistrationBean * @return */ @Bean public FilterRegistrationBean druidStatFilter(){
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
//添加过滤规则. filterRegistrationBean.addUrlPatterns("/*");
//添加不需要忽略的格式信息. filterRegistrationBean.addInitParameter("exclusions","*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
return filterRegistrationBean;
}
}
四、监控
访问 http://localhost:8080/druid， 使用上面配置的账号密码。
五、测试
@RestControllerpublic class HelloController{
private static final Logger logger = LoggerFactory.getLogger(HelloController.class);
@Autowired private JdbcTemplate jdbcTemplate;
@RequestMapping("hello") public List<Map<String, Object>> hello() {
List<Map<String, Object>> list = jdbcTemplate.queryForList("SELECT user,password FROM mysql.user ", new Object[]{
}
);
return list;
}
}
访问 localhost:8080/hello
[ {
"user": "root", "password": "*81F5E21E35407D884A6CD4A731AEBFB6AF209E1B" }
, {
"user": "root", "password": "*81F5E21E35407D884A6CD4A731AEBFB6AF209E1B" }
]
总结
以上所述是小编给大家介绍的SpringBoot使用Druid数据源，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！
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