为什么我的环境变量不工作在春天(专家)?

我的工作有用浏览器，我设定的环境变量在专家的配置(右，增加配置，亚军、环境变量)

这就像它读的变量名称为串而不是变量 请帮忙

应用程序的性质：

server.port=8081
spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:mysql://${MYSQL_HOST}?zeroDateTimeBehavior=convertToNull
spring.datasource.username=${SERVICE_USER}
spring.datasource.password=${SERVICE_PASSWORD}
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.jpa.properties.hibernate.globally_quoted_identifiers=true
#spring.jpa.show-sql: true

环境变量(在专家的配置):

SERVICE_PASSWORD=;MYSQL_HOST=localhost:3306/orderup;SERVICE_USER=root

该信息：

No such host is known (${MYSQL_HOST})

pom.xml:

    <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>mysql</groupId>
            <artifactId>mysql-connector-java</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>
<plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>