springboot配置druid数据源

• 新建springboot项目（选中web、jdbc、mysql等基础模块）

1.在pom文件中添加druid（springboot默认不支持）数据源；

	
	
		4.0.0
	
		com.atguigu
		spring-boot-06-data-jdbc
		0.0.1-SNAPSHOT
		jar
	
		spring-boot-06-data-jdbc
		Demo project for Spring Boot
	
		
			org.springframework.boot
			spring-boot-starter-parent
			1.5.10.RELEASE
			 
		
	
		
			UTF-8
			UTF-8
			1.8
		
	
		
			
				org.springframework.boot
				spring-boot-starter-jdbc
			
			
				mysql
				mysql-connector-java
				runtime
			
	
			
			
			
				com.alibaba
				druid
				1.1.8
			
	
			
				org.springframework.boot
				spring-boot-starter-web
			
	
	
			
				org.springframework.boot
				spring-boot-starter-test
				test
			
		
	
		
			
				
					org.springframework.boot
					spring-boot-maven-plugin
				
			
		
	
	
	

2.新建application.yaml文件

spring:
  datasource:
    username: root
    password: 123456
    url: jdbc:mysql://192.168.15.22:3306/jdbc
    driver-class-name: com.mysql.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource//切换数据源

//下面的配置需要使用配置文件才能生效
    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，去掉后监控界面sql无法统计，'wall'用于防火墙
    filters: stat,wall,log4j
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
//    schema://启动项目时自动执行sql语句
//      - classpath:department.sql

3.druid配置文件

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 javax.sql.DataSource;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

@Configuration
public class DruidConfig {

    @ConfigurationProperties(prefix = "spring.datasource")//使yaml文件的配置生效
    @Bean
    public DataSource druid(){
       return  new DruidDataSource();
    }

    //配置Druid的监控
    //1、配置一个管理后台的Servlet
    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
        Map initParams = new HashMap<>();

        initParams.put("loginUsername","admin");
        initParams.put("loginPassword","123456");
        initParams.put("allow","");//默认就是允许所有访问
        initParams.put("deny","192.168.15.21");

        bean.setInitParameters(initParams);
        return bean;
    }


    //2、配置一个web监控的filter
    @Bean
    public FilterRegistrationBean webStatFilter(){
        FilterRegistrationBean bean = new FilterRegistrationBean();
        bean.setFilter(new WebStatFilter());

        Map initParams = new HashMap<>();
        initParams.put("exclusions","*.js,*.css,/druid/*");

        bean.setInitParameters(initParams);

        bean.setUrlPatterns(Arrays.asList("/*"));

        return  bean;
    }
}