VSCode 和 Java 设置：没有兼容的 Jar

Question

我正在VSCode中设置 Java ，但似乎无法正确获取 JRE。有人可以借一双眼睛指出我所缺少的吗？

我看到 2 个错误：

1. 构建路径指定执行环境JavaSE-1.8。工作区中没有安装与此环境严格兼容的 JRE。
   
2. 指定的编译器合规性为 1.8，但使用了 JRE 11

操作系统：Windows 10
安装的 Java 版本：JDK 11（版本 11.0.2）

环境变量：
JAVA_HOME> C:\Program Files\Java\jdk-11.0.12
MAVEN_HOME> C:\Program Files\apache-maven-3.8.2
路径>%MAVEN_HOME%\bin

聚甲醛：

<?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>sqa.tan</groupId>
  <artifactId>automation</artifactId>
  <version>1.0-SNAPSHOT</version>

  <name>automation</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

<properties>
   <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
   <maven.compiler.source>1.8</maven.compiler.source>
   <maven.compiler.target>1.8</maven.compiler.target>
</properties>

<dependencies>

  <dependency>
    <groupId>io.appium</groupId>
    <artifactId>java-client</artifactId>
    <version>7.5.1</version>
  </dependency>

  <dependency>
    <groupId>com.google.apis</groupId>
    <artifactId>google-api-services-gmail</artifactId>
    <version>v1-rev20200919-1.31.0</version>
  </dependency>

  <dependency>
    <groupId>com.google.apis</groupId>
    <artifactId>google-api-services-oauth2</artifactId>
    <version>v2-rev20200213-1.31.0</version>
  </dependency>

  <dependency>
    <groupId>com.google.oauth-client</groupId>
    <artifactId>google-oauth-client-jetty</artifactId>
    <version>1.31.5</version>
  </dependency>

  <dependency>
    <groupId>io.github.bonigarcia</groupId>
    <artifactId>webdrivermanager</artifactId>
    <version>4.4.3</version>
  </dependency>

  <dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-1.2-api</artifactId>
    <version>2.7</version>
  </dependency>

  <dependency>
    <groupId>org.awaitility</groupId>
    <artifactId>awaitility</artifactId>
    <version>4.1.0</version>
  </dependency>

  <dependency>
    <groupId>org.seleniumhq.selenium</groupId>
    <artifactId>selenium-java</artifactId>
    <version>3.141.59</version>
  </dependency>

  <dependency>
    <groupId>org.testng</groupId>
    <artifactId>testng</artifactId>
    <version>7.4.0</version>
    <scope>test</scope>
  </dependency>
</dependencies>

<build>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
          <configuration>
             <source>1.8</source>
             <target>1.8</target>
          </configuration>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-jar-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
        <!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
        <plugin>
          <artifactId>maven-site-plugin</artifactId>
          <version>3.7.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-project-info-reports-plugin</artifactId>
          <version>3.0.0</version>
        </plugin>
      </plugins>
    </pluginManagement>
</build>
</project>

JRE系统库中的几个jar的屏幕截图

Answer 1

您已在 POM 文件中指定JAVA 1.8 ，但系统上安装了Java 11 。

对 POM 文件进行以下更改：

代替：

<properties>
   <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
   <maven.compiler.source>1.8</maven.compiler.source>
   <maven.compiler.target>1.8</maven.compiler.target>
</properties>

到，

<properties>
    <maven.compiler.source>11</maven.compiler.source>
    <maven.compiler.target>11</maven.compiler.target> 
</properties>

另外，更换

  <configuration>
     <source>1.8</source>
     <target>1.8</target>
  </configuration>

到，

  <configuration>
     <source>11</source>
     <target>11</target>
  </configuration>