文章目录
1. 执行mvn 报错 source-1.5 中不支持 diamond运算符
指定Maven的版本,并且指定Maven使用的jdk版本,在pom.xml中修改
<project xmlns="...">
...
<build>
<plugins>
<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>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
</plugins>
</build>
...
</project>
2. Unknown lifecycle phase "complile"运行四个命令:
https://cwiki.apache.org/confluence/display/MAVEN/LifecyclePhaseNotFoundException
第一步:mvn install
第二步:mvn compiler:compile
第三步:mvn org.apache.maven.plugins:maven-compiler-plugin:compile
第四步:mvn org.apache.maven.plugins:maven-compiler-plugin:2.0.2:compile
3. maven下provided作用域说明
1.test范围是指测试范围有效,在编译和打包时都不会使用这个依赖
2.compile范围是指编译范围内有效,在编译和打包时都会将依赖存储进去
3.provided依赖,在编译和测试过程中有效,最后生成的jar包时不会加入 例如:
servlet-api,因为servlet-api tomcat服务器已经存在了,如果再打包会冲突
4.runtime在运行时候依赖,在编译时候不依赖
默认依赖范围是compile
- https://blog.csdn.net/maqingbin8888/article/details/82621884
- http://www.cnblogs.com/soundcode/p/6595827.html
- https://blog.csdn.net/liubofucius/article/details/80844511
4. java和scala编译打包问题
<?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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>sandbox</groupId>
<artifactId>testJavaAndScala</artifactId>
<version>1.0-SNAPSHOT</version>
<name>Test for Java + Scala compilation</name>
<description>Test for Java + Scala compilation</description>
<dependencies>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>2.7.2</version>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>3.4.2</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.0.2</version>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<executions>
<execution>
<id>scala-compile-first</id>
<phase>process-resources</phase>
<goals>
<goal>add-source</goal>
<goal>compile</goal>
</goals>
</execution>
<execution>
<id>scala-test-compile</id>
<phase>process-test-resources</phase>
<goals>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>