Java spring-boot中tomcat的默认连接池？

Default connection pool for tomcat in spring-boot?

提问by membersound

What is the default value used for maximum connections on a postgresdatabase with tomcatconnection pooling using spring-boot?

使用连接池的postgres数据库上最大连接数的默认值是多少？tomcatspring-boot

There is a property spring.datasource.maxActive, but when I try to sysout it, I'm getting an exception:

有一个 property spring.datasource.maxActive，但是当我尝试对其进行 sysout 时，出现异常：

@Value("${spring.datasource.maxActive}")
private String act;

java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.maxActive' in string value "${spring.datasource.maxActive}

java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.maxActive' in string value "${spring.datasource.maxActive}

采纳答案by WeMakeSoftware

According to org.apache.tomcat.jdbc.pool.PoolPropertiesthe default value is 100

根据org.apache.tomcat.jdbc.pool.PoolProperties默认值是100

回答by sag

You need to set spring.datasource.max-active in your application.properties or application.yaml to get the value in your bean class

您需要在 application.properties 或 application.yaml 中设置 spring.datasource.max-active 以获取 bean 类中的值

Refer https://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.htmlfor common application.properties

常见的 application.properties参考https://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html