我刚用https://start.spring.io/配置了新项目 我的pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>tower</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>tower</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>9</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
和我的application.properties:
spring.datasource.url= jdbc:postgresql://localhost:5432/tower
spring.datasource.username=postgres
spring.datasource.password=XXX
spring.jpa.hibernate.ddl-auto=none
spring.jpa.properties.hibernate.temp.use_jdbc_metadata_defaults = false
我收到了错误org.postgresql.util.PSQLException: FATAL: database "tower" does not exist
。它说我的数据库没有启动,但我可以轻松地使用pgAdmin3 / 4进入它并运行查询。我也使用localhost:5432与数据库名塔,用户postgres和我的密码,这是肯定的。为什么然后我得到并且错误我的数据库没有启动。
我也尝试过:
Class.forName("org.postgresql.Driver");
Connection connection = null;
connection = DriverManager.getConnection(
"jdbc:postgresql://localhost:5432/tower","postgres", "XXX");
并得到完全相同的错误 - 数据库&#34;塔&#34;不存在。 数据库启动时为什么会出现这样的错误?
答案 0 :(得分:1)
打开日志记录,至少你会看到你是否尝试在Postgesql中连接。也可以在不使用PGAdmin的情况下尝试,例如使用Squirrel SQL客户端,与PGAdmin不同,它将要求您准确设置连接,即URL = jdbc:postgresql:// localhost:5432 / tower 如果Squirrel连接,那么它比你的代码更像PGAdmin