Java 如何连接到MySQL数据库
我正在尝试使用SpringBoot连接MySQL数据库,但我遇到以下错误: 应用程序无法以类路径启动:[文件:/C:/Dev/Repositorios/jira quality/target/classes/,文件:/C:/Users/jboscod/.m2/repository/mysql/mysql连接器java/8.0.21/mysql-connector-java-8.0.21.jar,文件:/C:/Users/jboscod/.m2/repository/org/springframework/boot/spring boot starter数据jpa/2.1.9.RELEASE/spring-boot-starter-data-jpa-2.1.9.RELEASE.jar 无法从位置“classpath:/application desenv.yml”加载属性源 我的pom是这样的:Java 如何连接到MySQL数据库,java,mysql,spring,spring-boot,hibernate,Java,Mysql,Spring,Spring Boot,Hibernate,我正在尝试使用SpringBoot连接MySQL数据库,但我遇到以下错误: 应用程序无法以类路径启动:[文件:/C:/Dev/Repositorios/jira quality/target/classes/,文件:/C:/Users/jboscod/.m2/repository/mysql/mysql连接器java/8.0.21/mysql-connector-java-8.0.21.jar,文件:/C:/Users/jboscod/.m2/repository/org/springframe
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>br.com.oss.jira.quality</groupId>
<artifactId>jira-quality</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>jira-quality</name>
<description>Gerenciador de inconsistências no Jira</description>
<properties>
<java.version>1.8</java.version>
<lombok.version>1.18.6</lombok.version>
</properties>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<!-- <dependency>
<groupId>com.oracle.database.jdbc</groupId>
<artifactId>ojdbc8</artifactId>
<version>12.2.0.1</version>
</dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- <dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<scope>runtime</scope>
</dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-quartz</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<!-- Exclude the default Jackson dependency -->
<!-- <exclusions> -->
<!-- <exclusion> -->
<!-- <groupId>org.springframework.boot</groupId> -->
<!-- <artifactId>spring-boot-starter-json</artifactId> -->
<!-- </exclusion> -->
<!-- </exclusions> -->
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>${gson.version}</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.7.0</version>
<scope>compile</scope>
</dependency>
</dependencies>
<profiles>
<profile>
<id>desenv</id>
<properties>
<activatedProperties>desenv</activatedProperties>
</properties>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
</profile>
<profile>
<id>prod</id>
<properties>
<activatedProperties>prod</activatedProperties>
</properties>
</profile>
</profiles>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
</build>
</project>
我不知道问题是在我的pom还是我的应用程序文件中。如果没有在pom文件中添加Spring数据JPA,请添加以下内容:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
org.springframework.boot
spring引导启动器数据jpa
mysql
mysql连接器java
运行时
清理您的项目并接受Maven更新。
它将成功运行。我注意到
无法从位置'classpath:/application desenv.yml'加载属性源。
您是否尝试将
application.properties
更改为application desenv.yml
?这不是yml文件的格式,将文件名更改为application.properties我已更改,但错误仍然存在。如果使用mysql-c,请尝试将spring.datasource.driver-class-name更改为spring.datasource.drivercassname=com.mysql.cj.jdbc.driverConnector java version 8您在哪个位置维护此属性文件,我猜从这个错误中,无法从位置'classpath:/application desenv.yml'加载属性源。它无法在类路径中找到属性文件。我发现加载应用程序desenv的问题在于缺少“:”。我必须替换“=”对于“:”而言,它是有效的。但现在,它出现了另一个问题。“java.sql.SQLException:服务器时区值'Hora Padr�o de Buenos Aires'无法识别或表示多个时区。如果要利用时区支持,必须配置服务器或JDBC驱动程序(通过serverTimezone配置属性)以使用更具体的时区值。”你能在这里显示完整的Pom文件吗?或者试着删除这个MySql版本8.0.21添加更新,就像我的答案一样…好的,它在上面。我需要添加一些hibernate依赖项吗?没有必要,这是由JPA完成的。如果需要,你可以从下面的git链接获得帮助。我有一个application.yml作为应用程序的父亲,还有两个孩子(application-desenv.yml和application-prod.yml。我必须连接到hsqldb,但我无法连接到MySQL。请尝试使用@PropertySource指定您的属性或yml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>