SpringBoot使用Druid数据源的配置方法

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.driver
spring.datasource.url=jdbc:mysql://localhost:3306/uu_core?useunicode=true&characterencoding=utf8&autoreconnect=true&usessl=true
spring.datasource.username=root
spring.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=5
spring.datasource.minidle=1
spring.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=300000
spring.datasource.validationquery=select 1 from dual
spring.datasource.testwhileidle=true
spring.datasource.testonborrow=false
spring.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

@restcontroller
public 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服务器之家网站的支持！

原文链接：https://blog.csdn.net/qq_36640744/article/details/80096475