如何将主机上运行的 SpringBoot 应用程序连接到 Docker 上运行的 Postgresql？

Question

   ** Application.properties**
    
spring.datasource.url=jdbc:postgresql://0.0.0.0:8000/dockerDb
spring.datasource.password=somePassword
spring.jpa.show-sql=true 
spring.jpa.hibernate.ddl-auto=create

** docker ps** CONTAINER ID 1506c2981b1d IMAGE 13-version
COMMAND "docker-entrypoint.s…"
PORTS 5432/tcp, 0.0.0.0:8000->5438/tcp
NAMES postgresql-13

Answer 1

The 0.0.0.0 in the docker ps command means that any address can connect to the container. But you need to use a real IP address or machine name. As it's on the same computer, localhost will be fine:

spring.datasource.url=jdbc:postgresql://localhost:8000/dockerDb