如何解决此问题 - 无法在 org.postgresql:postgresql:jar:42.2.4 收集依赖项

Question

Could not resolve dependencies for project com.howtodoinjava:demo:jar:0.0.1-SNAPSHOT: 
Failed to collect dependencies at org.postgresql:postgresql:jar:42.2.4: Failed to read artifact descriptor for org.postgresql:postgresql:jar:42.2.4: Could not transfer artifact org.postgresql:postgresql:pom:42.2.4 from/to central (https://repo.maven.apache.org/maven2): Transfer failed for https://repo.maven.apache.org/maven2/org/postgresql/postgresql/42.2.4/postgresql-42.2.4.pom: Unknown host No such host is known (repo.maven.apache.org) -> [Help 1]

Answer 1

Share your pom.xml and application.properties , anyway it should be something like:

• Pom file

<dependency>
        <groupId>org.postgresql</groupId>
        <artifactId>postgresql</artifactId>
</dependency>

• Application peroperies

spring.datasource.url=jdbc:postgresql://localhost:5432/yourdatabasename
spring.datasource.username=postgres (this is default username)
spring.datasource.password=yourpassword

spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect

spring.jpa.hibernate.ddl-auto=update