解决linux下cannot execute binary file: Exec format error（centos下卸载和安装jdk）

布满荆棘的人生 2023-01-10 15:58 512阅读 0赞

我卡住这个问题好久也解决不了，其实是jdk安装不对，安装之前先卸载干净，再重新安装

## 思路 ##

用yum去安装jdk

安装之前：先卸载jdk

## 1、卸载 ##

查看系统是否自带 jdk

rpm -qa |grep java
    rpm -qa |grep jdk 
    rpm -qa |grep gcj

如果有输出信息，批量卸载系统自带

rpm -qa | grep java | xargs rpm -e --nodeps
    rpm -qa | grep jdk | xargs rpm -e --nodeps

## 2、安装 ##

检查jdk都有哪些安装包

yum list java-1.8*

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安装包

yum install java-1.8.0-openjdk* -y
    
    
    
    ```bash
    3、配置环境变量

yum install java-1.8.0-openjdk\* -y

vi /etc/profile

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export JAVA_HOME=/usr/lib/jvm/jre-1.8.0-openjdk
    export PATH=${JAVA_HOME}/bin:$PATH
    
    备注：修改环境变量键盘操作 按（a）  结束环境变量修改 按esc键 和（：wq！）

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执行命令：，配置的环境变量生效

source /etc/profile

## 4、检查安装是否成功 ##

java -version

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