我为我的网络应用程序预制了后端.
在我的项目(SpringBoot Maven)中,我想添加h2日期库.
根据网站的教程:
>已添加到application.properties
server.port = 8088
spring.h2.console.enabled=true
spring.h2.console.path=/h2
spring.datasource.url=jdbc:h2:mem:testdb
spring.datasource.username=sa
spring.datasource.password=
spring.datasource.driverClassName=org.h2.Driver //h2 seems to be NOT found
spring.jpa.show-sql=true
>添加了对pom.xml的依赖项
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
问题:
在application.properties中:“无法解析类或包’h2’”
全面检查:“检查Spring Boot应用程序.properties配置文件.突出显示未解析和弃用的配置键和无效值.仅适用于Spring Boot 1.2或更高版本.”
当然,我的Spring Boot高于1.2(1.5.8).我在网上发现了类似的问题,但“重新编码依赖”不起作用,所以我仍然没有解决方案:).请帮忙.
解决方法:
看起来问题出在您的pom文件中.请查看我在您的application.properties文件中检查过的pom.xml文件.
<?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.mberazouski.*</groupId>
<artifactId>spring-boot-hibernate</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>spring-boot-hibernate</name>
<description>Demo project for Spring Boot And Hibernate</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
<relativePath/>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>
</project>
一旦你的春季启动开始,检查h2-console:
http://localhost:8088/h2
希望这会有所帮助.
附:如果您不知道我建议您使用http://start.spring.io/来生成您的项目.在那里,您可以选择您计划使用的任何组件.更多关于这一点,你可以阅读例如here.