java - 如何在 Travis CI 中测试 Java 8？

Question

我正在尝试运行 Travis CI 测试。像这样:

language: java
jdk: oraclejdk8
sudo: false
script: mvn test 

它应该非常简单......但我得到这个错误:

 diamond operator is not supported in -source 1.5
      (use -source 7 or higher to enable diamond operator)
 lambda expressions are not supported in -source 1.5
  (use -source 8 or higher to enable lambda expressions)

它应该是 Java 8，对吧？ 如何配置 Travis CI 运行 Java 8 而不是 Java 5？

欢迎任何帮助!

编辑

这是我的 POM:

<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>br.com.simplepass</groupId>
  <artifactId>mapPointManager</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>mapPointManager</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.assertj</groupId>
      <artifactId>assertj-core</artifactId>
      <version>3.5.2</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

Answer 1

您应该在 pom 脚本中添加以下标记:

<build>
    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.3</version>
        <configuration>
            <source>1.8</source>
            <target>1.8</target>
        </configuration>
    </plugin>
</build>

这将使您的源代码和目标编译为 java 1.8。顺便说一句，我有一个 GitHub使用Java 8和Travis的项目，你可以看看!你的整个 pom 会是这样的:

<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>br.com.simplepass</groupId>
    <artifactId>mapPointManager</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>mapPointManager</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <build>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.3</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
    </build>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.assertj</groupId>
            <artifactId>assertj-core</artifactId>
            <version>3.5.2</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>