### CentOS安装JDK8和MAVEN 先贴原文链接，他的比较完整，本文章仅用于记录！！！`https://blog.csdn.net/weixin_45501219/article/details/136021654?ops_request_misc=%7B%22request%5Fid%22%3A%22171370430216800211581831%22%2C%22scm%22%3A%2220140713.130102334.pc%5Fall.%22%7D&request_id=171370430216800211581831&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~first_rank_ecpm_v1~times_rank-2-136021654-null-null.142^v100^pc_search_result_base8&utm_term=centos自动安装maven&spm=1018.2226.3001.4187` 1. 打开终端，执行一下命令，如果以前装过，可以先看看是不是jre和jdk都安装了，通过``java -version``和`javac -version`命令测试， 2. 安装jdk和jre：``yum install java-1.8.0-openjdk-devel.x86_64`` 3. 验证：``java -version``和`javac -version` 4. 然后安装maven，此处从阿里云镜像仓库中下载，,先创建一个文件夹，进入到该文件夹内，然后执行命令``wget https://mirrors.aliyun.com/apache/maven/maven-3/3.9.6/binaries/apache-maven-3.9.6-bin.tar.gz`` 5. 然后解压到当前目录下`tar xf apache-maven-3.9.6-bin.tar.gz -C /opt` 6. 设置环境变量`vim /etc/profile.d/maven.sh` 7. 写入内容 ：注意，software是我的目录，这里要改成你自己的 ```bash export JAVA_HOME=/usr/lib/jvm/jre-openjdk export M2_HOME=/softWare/apache-maven-3.9.6 export MAVEN_HOME=/softWare/apache-maven-3.9.6 export PATH=${M2_HOME}/bin:${PATH} ``` 8. 赋予执行权限`chmod x /etc/profile.d/maven.sh`，使生效`source /etc/profile.d/maven.sh` 9. 验证`mvn -version`，可以看到版本号则成功了 10.设置maven镜像仓库 `vim $M2_HOME/conf/settings.xml` ```c <mirror> <id>alimaven</id> <mirrorOf>central</mirrorOf> <name>aliyun maven</name> <url>http://maven.aliyun.com/nexus/content/groups/public/</url>; </mirror> ``` 经验 OJ