springboot整合Druid数据源[springboot8]

springboot整合Druid数据源

什么是Druid?

Druid是一个高效的数据查询系统,主要解决的是对于大量的基于时序的数据进行聚合查询。

Druid的依赖:



<dependency>
  <groupId>com.alibabagroupId>
  <artifactId>druidartifactId>
   <version>1.1.21version>
dependency>

<dependency>
   <groupId>log4jgroupId>
   <artifactId>log4jartifactId>
   <version>1.2.17version>
dependency>

application.yaml配置

spring:
  datasource:
    username: root
    password: xxxxx
    url: jdbc:mysql://localhost:3306/test?serverTimezone=UTC&useUnicode=true&characterEncoding=UTF-8
    driver-class-name: com.mysql.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource

    #springBoot默认是不注入这些属性值的,需要自己绑定
    #druid数据源专有配置
    initialSize: 5
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true

    #配置监控统计拦截的filters,stat:监控统计,log4j:日志记录,wall:防止sql注入
    #如果允许报错时 java.lang.ClassNotFoundException:org.apache.log4j.Priority
    #则导入log4j依赖即可,Maven地址:https://mvnrepository.com/artifact/log4j/log4j
    filters: stat,wall,log4j
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

在启动类的同级目录下,建立文件夹config,在新建DruidConfig类:

DruidConfig.java

@Configuration
public class DruidConfig {
     

    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druiDataSource(){
     
        return new DruidDataSource();
    }

    //后台监控
    //因为springboot内置了servlet容器,所有没有web.xml,替代方法:ServletRegistrationBean
    @Bean
    public ServletRegistrationBean statViewServlet(){
     
        ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");
        //后台需要有人登录,账号密码配置
        HashMap<String,String> initParameters = new HashMap<>();

        //增加配置 loginUsername,loginPassword时固定的不能修改,账户和密码可以随意设置
        initParameters.put("loginUsername","admin");
        initParameters.put("loginPassword","123456");

        //允许谁可以访问
        initParameters.put("allow","");

        //禁止谁不能访问  initParameters.put("ws","192.168.11.123");


        //设置初始化参数
        bean.setInitParameters(initParameters);
        return bean;
    }

    //filter 过滤器
    @Bean
    public FilterRegistrationBean webStatFilter(){
     
        FilterRegistrationBean bean = new FilterRegistrationBean();
        bean.setFilter(new WebStatFilter());
        //可以过滤哪些请求呢?
        Map<String, String> initParameters = new HashMap<>();
        //这些东西不进行统计
        initParameters.put("exclusions","*.js,*.css,/druid/*");
        bean.setInitParameters(initParameters);
        return bean;
    }


}

项目配置好后,运行项目(请求路径为:http://localhost:8080/druid,上面设置的账户为:admin,密码为:123456),如图

springboot整合Druid数据源[springboot8]_第1张图片

登录后

springboot整合Druid数据源[springboot8]_第2张图片

表示配置成功了!

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