整合Druid时遇到的错误
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
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
也作了相关配置 DruidConfig.class
1 @Configuration 2 public class DruidConfig { 3 4 @ConfigurationProperties(prefix = "spring.datasource") 5 @Bean 6 public DataSource druid() { 7 return new DruidDataSource(); 8 } 9 10 // 配置Druid的监控 11 // 1、配置一个管理后台的Servlet 12 @Bean 13 public ServletRegistrationBean statViewServlet() { 14 ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*"); 15 Map<String, String> initParams = new HashMap<>(); 16 17 initParams.put("loginUsername", "admin"); 18 initParams.put("loginPassword", "123456"); 19 initParams.put("allow", "");// 默认就是允许所有访问 20 initParams.put("deny", "10.18.172.124"); 21 22 bean.setInitParameters(initParams); 23 return bean; 24 } 25 26 // 2、配置一个web监控的filter 27 @Bean 28 public FilterRegistrationBean webStatFilter() { 29 FilterRegistrationBean bean = new FilterRegistrationBean(); 30 bean.setFilter(new WebStatFilter()); 31 32 Map<String, String> initParams = new HashMap<>(); 33 initParams.put("exclusions", "*.js,*.css,/druid/*"); 34 35 bean.setInitParameters(initParams); 36 37 bean.setUrlPatterns(Arrays.asList("/*")); 38 39 return bean; 40 } 41 }
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
1 <!-- https://mvnrepository.com/artifact/log4j/log4j --> 2 <dependency> 3 <groupId>log4j</groupId> 4 <artifactId>log4j</artifactId> 5 <version>1.2.17</version> 6 </dependency>
再次启动,成功!
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