java - Java 中导入 toml4j 失败

Question

我正在尝试导入TOML4J进入我的 Maven 项目。我将其添加到 POM.xml 中依赖项部分的依赖项中:

<dependency>
    <groupId>com.moandjiezana.toml</groupId>
    <artifactId>toml4j</artifactId>
    <version>0.7.2</version>
</dependency>

但是我在

处收到错误

<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">

说它“无法读取 com.moandjienzana.toml:toml4j:jar:0.7.2 的 Artifact 描述符”第二个错误表明未找到所述依赖项，突出显示“0.7.2”

编辑1:我相信已经解决了这个问题，但是如果我添加

import com.moandjiezana.toml.toml4j;

对于我的主文件，它无法识别“moandjiezana”部分。

编辑 2:完整的 POM.xml 文件:

<?xml version="1.0" encoding="UTF-8"?>

<!--suppress MavenModelInspection -->
<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>com.comp.ima.restmesspc</groupId>
  <artifactId>RESTMessPC</artifactId>
  <version>0.1-SNAPSHOT</version>

  <name>RESTMessPC</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.maven.apache.org.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.moandjiezana.toml/toml4j -->
    <dependency>
      <groupId>com.moandjiezana.toml</groupId>
      <artifactId>toml4j</artifactId>
      <version>0.7.2</version>
    </dependency>

  </dependencies>

  <build>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.0.0</version>
        </plugin>
        <!-- see http://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>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.7.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.20.1</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>
      </plugins>
    </pluginManagement>
  </build>
</project>

编辑3:执行全新安装后，我收到此错误:

[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] No compiler is provided in this environment. Perhaps you are running on
a JRE rather than a JDK?
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 36.301 s
[INFO] Finished at: 2018-04-17T19:08:28+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.
7.0:compile (default-compile) on project RESTMessPC: Compilation failure
[ERROR] No compiler is provided in this environment. Perhaps you are running on
a JRE rather than a JDK?

我确实安装了 JDK 并且 IntelliJ 可以识别它。

编辑4:

[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /D:/Environments/Java/restmesspc/src/main/java/com/comp/ima/restmess
pc/App.java:[8,29] cannot find symbol
  symbol:   class toml4j
  location: package com.moandjiezana.toml
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.432 s
[INFO] Finished at: 2018-04-17T19:30:39+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.
7.0:compile (default-compile) on project RESTMessPC: Compilation failure
[ERROR] /D:/Environments/Java/restmesspc/src/main/java/com/comp/ima/restmess
pc/App.java:[8,29] cannot find symbol
[ERROR]   symbol:   class toml4j
[ERROR]   location: package com.moandjiezana.toml

Answer 1

请按照以下步骤操作:-

1. 使用link中的说明安装MAVEN 。您应该还安装了 JAVA 7
2. 设置环境变量(即设置JAVA HOME和Maven路径)
3. 使用maven命令验证安装是否成功mvn -v
4. 如果 Maven 版本显示成功，请尝试 IntelliJ 中的自动导入功能。它应该从远程存储库下载 Artifact
5. 前往 IntelliJ
6. 打开 POM xml 文件 --> 右键单击​​ --> Maven --> 重新导入

编辑:-

1. 请确保安装了 JDK 7 或 8 并正确设置了 JAVA_HOME
2. 使用 set JAVA_HOME=C:\Program Files\Java\jdk1.8.0_31 正确设置 Java 主目录