[英]Problem with Maven war plugin 3.0.0 due to an API incompatibility
[英]Fail to Maven Build due to an API incompatibility
我想使用 Servlet API 构建一个 maven 项目。但是,我失败了,错误出现了:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:3.0.0:war (default-war) on project myfirstservlet: Execution default-war of goal org.apache.maven.plugins:maven-war-plugin:3.0.0:war failed: Unable to load the mojo 'war' in the plugin 'org.apache.maven.plugins:maven-war-plugin:3.0.0' due to an API incompatibility: org.codehaus.plexus.component.repository.exception.ComponentLookupException: null
我对这个问题知道一点,但仍然不知道如何解决。我应该下载另一个版本的JDK、JRE或其他什么,或者只是重写我的代码? 这是我的 pom.xml 代码:
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mavenservlet</groupId>
<artifactId>myfirstservlet</artifactId>
<properties>
<failOnMissingWebXml>false</failOnMissingWebXml>
</properties>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>myfirstservlet Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet.jsp/javax.servlet.jsp-api -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.3</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<finalName>myfirstservlet</finalName>
<plugins>
<plugin>
<groupId>com.mavenservlet</groupId>
<artifactId>myfirstservlet</artifactId>
<version>0.0.1-SNAPSHOT</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<webResources>
<resource>
<directory>WebContent</directory>
</resource>
</webResources>
</configuration>
</plugin>
</plugins>
</build>
</project>
这是正确的代码,它花了我一些钱。我仍然不知道它是如何工作的。但我很乐意为追随者分享它。
<?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.mavenservlet</groupId>
<artifactId>myfirstservlet</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<dependencies>
<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet.jsp/javax.servlet.jsp-api -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.3</version>
</dependency>
</dependencies>
</project>
解决方案之一是更改默认插件版本,您的默认版本可能是 2.2 或 3.0.0,因此请仔细阅读此处提到的错误 maven-war-plugin。
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.3.2</version>
</plugin>
]
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