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Linux手把手在线安装JDK

  • 2026-02-01 17:53:12
Linux手把手在线安装JDK
通过 yum 仓库安装（适用于 CentOS）
步骤 1：安装wget工具，用于下载仓库配置
yum install -y wget
步骤 2：下载并安装Oracle JDK的yum源配置
wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" https://yum.oracle.com/public-yum-ol7.repo -O /etc/yum.repos.d/public-yum-ol7.repo
步骤 3：安装 JDK 1.8
yum install -y java-1.8.0-openjdk-devel.x86_64
步骤 4：验证安装 ，检查Java版本，出现1.8.x即安装成功
java -version
步骤 5：配置环境变量（可选，部分系统需手动配置）
# 编辑环境变量配置文件vi /etc/profile# 在文件末尾添加以下内容（先通过find / -name java-1.8.0-openjdk 找到安装路径）export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdkexport PATH=$PATH:$JAVA_HOME/binexport CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar# 使配置生效source /etc/profile
搞定，成功以后就可以运行jar包了。
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  1. CONNECT:[ UseTime:0.000557s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000613s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000275s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000244s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000455s ]
  6. SELECT * FROM `set` [ RunTime:0.000206s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000534s ]
  8. SELECT * FROM `article` WHERE `id` = 461460 LIMIT 1 [ RunTime:0.000826s ]
  9. UPDATE `article` SET `lasttime` = 1770579908 WHERE `id` = 461460 [ RunTime:0.002383s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.000225s ]
  11. SELECT * FROM `article` WHERE `id` < 461460 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000426s ]
  12. SELECT * FROM `article` WHERE `id` > 461460 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.019509s ]
  13. SELECT * FROM `article` WHERE `id` < 461460 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.007067s ]
  14. SELECT * FROM `article` WHERE `id` < 461460 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.014474s ]
  15. SELECT * FROM `article` WHERE `id` < 461460 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.018476s ]
0.145518s