[ERROR] 不再支持源选项 5。请使用 7 或更高版本

pom.xml加上

<properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.encoding>UTF-8</maven.compiler.encoding>
<!--        <java.version>1.8</java.version>-->
<!--        <maven.compiler.source>1.8</maven.compiler.source>-->
<!--        <maven.compiler.target>1.8</maven.compiler.target>-->
        <java.version>13</java.version>
        <maven.compiler.source>13</maven.compiler.source>
        <maven.compiler.target>13</maven.compiler.target>
    </properties>

<?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>
    <modules>
        <module>order</module>
        <module>stock</module>
    </modules>
<!--    <parent>-->
<!--        <groupId>org.springframework.boot</groupId>-->
<!--        <artifactId>spring-boot-starter-parent</artifactId>-->
<!--        <version>2.5.5</version>-->
<!--        <relativePath/> &lt;!&ndash; lookup parent from repository &ndash;&gt;-->
<!--    </parent>-->
    <groupId>com.wsm.springcloud</groupId>
    <artifactId>springcloudalibaba</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springcloudalibaba</name>
    <description>Demo project for Spring Boot</description>
    <packaging>pom</packaging>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.encoding>UTF-8</maven.compiler.encoding>
<!--        <java.version>1.8</java.version>-->
<!--        <maven.compiler.source>1.8</maven.compiler.source>-->
<!--        <maven.compiler.target>1.8</maven.compiler.target>-->
        <java.version>13</java.version>
        <maven.compiler.source>13</maven.compiler.source>
        <maven.compiler.target>13</maven.compiler.target>
    </properties>

    <dependencyManagement>
        <dependencies>
            <!-- Spring Cloud alibaba的版本管理，通过dependency完成继承 -->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.2.6.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!-- Spring Boot的版本管理，通过dependency完成继承 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-parent</artifactId>
                <version>2.3.2.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!-- Spring Cloud的版本管理，通过dependency完成继承 -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Hoxton.SR9</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </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>