原创: druid配置及解决：Failed to bind properties under 'spring.datasource' to javax.sql.DataSource

如何没有添加依赖log4依赖包
会报错：Failed to bind properties under 'spring.datasource' to javax.sql.DataSource

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网上查了下，没有找打相关的报错解决办法，所以在解决问题后，整理到网上，帮助有需要的朋友。
 
1：添加配置 druid 依赖包

 <!--        引入druid alibaba    begin-->
        <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.23</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/log4j/log4j -->
    <!-- 不增加引依赖：报错Failed to bind properties under 'spring.datasource' to javax.sql.DataSource-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <!--     引入druid alibaba          end-->

2: springboot整合druid时，引入了druid的数据源，在配置文件application.yml中配置了相关配置     

erver:
    port: 8083
spring:
    datasource:
    #    url: jdbc:mysql://localhost:3306/recruit_gather?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC&useSSL=false
        driver-class-name: com.mysql.cj.jdbc.Driver
        username: root
        password: asplover
        url: jdbc:mysql://localhost:3306/com_ibaiqi_government?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC&useSSL=false
    #改变默认数据源,当前为druid
        type: com.alibaba.druid.pool.DruidDataSource
    #   druid数据源 其他配置
        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，去掉后监控界面sql无法统计，'wall'用于防火墙
    #   添加此功能不加log4j 依赖会报错
        filters: stat,wall,log4j
        maxPoolPreparedStatementPerConnectionSize: 20
        useGlobalDataSourceStat: true
        connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

3:druid的配置类：DruidConfig

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")
    @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<String,String> 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<String,String> initParams = new HashMap<>();
        initParams.put("exclusions","*.js,*.css,/druid/*");
        bean.setInitParameters(initParams);
        bean.setUrlPatterns(Arrays.asList("/*"));

        return  bean;
    }
}

也作了相关配置 DruidConfig.class

  
但是在启动时报错：

***************************
APPLICATION FAILED TO START
***************************

Description:

Failed to bind properties under 'spring.datasource' to javax.sql.DataSource:

    Property: spring.datasource.filters
    Value: stat,wall,log4j
    Origin: class path resource [application.yml]:24:14
    Reason: org.apache.log4j.Logger

Action:

Update your application's configuration

 

根据报错提示在配置文件的24行，查看配置文件，该行代码是     filters: stat,wall,log4j

看报错原因Reason: org.apache.log4j.Logger，于是猜想少了log4j的相关依赖，在pom中引入相关依赖

再次启动，成功！
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版权声明：本文为CSDN博主「Peter-OK」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/xingkongtianma01/article/details/81624313