maven常见错误

• 错误1：​​maven打包报错​​
• 错误还原：使用maven打包项目时报错如下

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources (default-resources) on project helloworld: Input length = 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

• 解决方案：配置pom.xml中的maven插件

<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-resources-plugin</artifactId>
    <version>3.1.0</version>
</plugin>

• ​​参考​​
• 错误2：​​打包项目时报错：maven--Error executing Maven. 2 problems were encountered while building the effective settings​​

# 解决方案：settings.xml中标签是否一一对应
<localRepository>E:\apache-maven-3.6.3\repo</localRepository>
<mirrors>
  <mirror>
    <id>alimaven</id>
    <mirrorOf>central</mirrorOf>
    <name>aliyun maven</name> 
    <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
  </mirror>
</mirrors>
<profiles>
  <profile>
    <id>alibaba</id>
    <activation>
      <activeByDefault>true</activeByDefault>
      <jdk>11</jdk>
    </activation>
    <properties>
      <maven.compiler.source>11</maven.compiler.source>
      <maven.compiler.target>11</maven.compiler.target>
      <maven.compiler.compilerVersion>11</maven.compiler.compilerVersion>
    </properties>
  </profile>
</profiles>

• 错误3：​​maven拉取依赖失败，本地仓库中只能下载 .lastUpdate后缀的文件​​

错误原因：由于我本地安装了jdk8和jdk14，所以当切换jdk的时候；maven的setting.xml中也需重新配置jdk的版本
解决方案：写一个脚本删除所有 .lastUpdate后缀的文件，重新配置setting.xml后重新拉去依赖
脚本：clearLastUpdated.bat

@echo off
rem create by NettQun 
rem 这里写你的仓库路径
set REPOSITORY_PATH=C:\Users\LENOVO\.m2\repository
rem 正在搜索...
for /f "delims=" %%i in ('dir /b /s "%REPOSITORY_PATH%\*lastUpdated*"') do (
    echo %%i
    del /s /q "%%i"
)
rem 搜索完毕
pause

# 执行完脚本后，重写配置setting.xml，重新拉取依赖