新春天工程建设失败
新春天工程建设失败
提问于 2018-01-17 13:52:00
我对春天完全是个初学者。我已经安装了jdk和maven…
echo $JAVA_HOME显示：
/Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home$ javac -version显示：
javac 9.0.4mvn -version显示：
Apache Maven 3.5.2 (138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T08:58:13+01:00)
Maven home: /usr/local/Cellar/maven/3.5.2/libexec
Java version: 9.0.4, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home
Default locale: en_GB, platform encoding: UTF-8
OS name: "mac os x", version: "10.13.2", arch: "x86_64", family: "mac"到目前为止，我所做的唯一一件事就是创建一个名为“控制器”的包，其中包含一个"HomeController.java“文件，代码如下：
package com.demo.spring.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class HomeController {
@RequestMapping(value = "/", method = RequestMethod.GET)
public String index(){
return "Hello World.";
}
}但是当我做mvn spring-boot:run的时候我得到：
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.561 s
[INFO] Finished at: 2018-01-17T13:28:14Z
[INFO] Final Memory: 25M/83M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:1.5.9.RELEASE:run (default-cli) on project demo: Could not exec java: Application finished with exit code: 1 -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException我以前没有接触过spring，所以安装了jdk (通过java网站)和maven (通过自制)，并且遵循了在intellij中设置spring应用程序的教程，我不知道我做错了什么/没有做什么。我看到引用无法执行java的错误和链接，说明这是一个插件问题，但是如何解决这个问题呢？
pom.xml：
<?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>com.demo.spring</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo-spring</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<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-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</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>
回答 2
Stack Overflow用户
回答已采纳
发布于 2018-01-17 14:35:33
我认为所有这些错误都与Java 9有关。
Maven建议对Java 9进行一些更改，您可以使用它们，例如：
- 添加Java 9作为属性：
- 如果编译失败，请修复maven-compiler-plugin：
- 对于测试失败，修复maven-surefire-plugin
- 对于打包失败，修复maven-jar-plugin (可选)
- 对于Spring插件失败，请修复spring-boot-maven-plugin
欲知更多信息，请访问这博客。
Stack Overflow用户
发布于 2018-01-17 14:10:01
当前版本的jdk为1.9.0，但在pom.xml中为1.8，因此需要将该版本更改为1.9。
以下是您的版本
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>改到1.9
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.9</java.version>
</properties>
then try to run below command
mvn clean spring-boot:run页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/48302765
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