腾讯云java环境搭建完整流程

1. 注册登录腾讯云，下载putty连接。
   
   
2. jdk安装
   
   输入
   

   yum search jdk

   小贴士：yum可以理解为一个联网的软件管家，详见
   
   

   Loaded plugins: fastestmirror, security
   Loading mirror speeds from cached hostfile
   =============================== N/S Matched: jdk ===============================
   copy-jdk-configs.noarch : JDKs configuration files copier
   java-1.6.0-openjdk.x86_64 : OpenJDK Runtime Environment
   java-1.6.0-openjdk-demo.x86_64 : OpenJDK Demos
   java-1.6.0-openjdk-devel.x86_64 : OpenJDK Development Environment
   java-1.6.0-openjdk-javadoc.x86_64 : OpenJDK API Documentation
   java-1.6.0-openjdk-src.x86_64 : OpenJDK Source Bundle
   java-1.7.0-openjdk.x86_64 : OpenJDK Runtime Environment
   java-1.7.0-openjdk-demo.x86_64 : OpenJDK Demos
   java-1.7.0-openjdk-devel.x86_64 : OpenJDK Development Environment
   java-1.7.0-openjdk-javadoc.noarch : OpenJDK API Documentation
   java-1.7.0-openjdk-src.x86_64 : OpenJDK Source Bundle
   java-1.8.0-openjdk-debug.x86_64 : OpenJDK Runtime Environment with full debug on
   java-1.8.0-openjdk-demo.x86_64 : OpenJDK Demos
   java-1.8.0-openjdk-demo-debug.x86_64 : OpenJDK Demos with full debug on
   java-1.8.0-openjdk-devel.x86_64 : OpenJDK Development Environment
   java-1.8.0-openjdk-devel-debug.x86_64 : OpenJDK Development Environment with
                                         : full debug on
   java-1.8.0-openjdk-headless.x86_64 : OpenJDK Runtime Environment
   java-1.8.0-openjdk-headless-debug.x86_64 : OpenJDK Runtime Environment with full
                                            : debug on
   java-1.8.0-openjdk-javadoc.noarch : OpenJDK API Documentation
   java-1.8.0-openjdk-javadoc-debug.noarch : OpenJDK API Documentation for packages
                                           : with debug on
   java-1.8.0-openjdk-src.x86_64 : OpenJDK Source Bundle
   java-1.8.0-openjdk-src-debug.x86_64 : OpenJDK Source Bundle for packages with
                                       : debug on
   ldapjdk-javadoc.x86_64 : Javadoc for ldapjdk
   icedtea-web.x86_64 : Additional Java components for OpenJDK - Java browser
                      : plug-in and Web Start implementation
   ldapjdk.x86_64 : The Mozilla LDAP Java SDK
   
     Name and summary matches only, use "search all" for everything.
   

   这样就会显示出所有包括jdk的文件
   输入

3. yum install -y java-1.8.0-openjdk*

   小贴士：-y意思是所有都选择yes
   这样就会安装所有jdk1.8相关的应用。
   安装完成之后
   

   javac -version

   查看jdk版本
   
4. 安装mysql
   
   大雾~~~之前的方法安装的mysql是5.1的。。。。。现在说一下5.7的安装方法
   
   

   https://repo.mysql.com//mysql57-community-release-el6-11.noarch.rpm

   先去下载rpm文件，传到服务器上，然后
   

   rpm -Uvh mysql57-community-release-el6-11.noarch.rpm
   

   yum install -y mysql-community-server

   完成之后,启动mysql
   

   service mysqld start

   首次登陆密码在
   

   /var/log/mysqld.log

   搜一下password

   A temporary password is generated for root@localhost: A<0Igo=wc8kk

   A<0Igo=wc8kk就是密码

   登陆mysql
   

   mysql -u root -p

   再输入密码就能登陆mysql了，然后需要修改密码，
   

   如果密码设置太简单出现以下的提示

   
   

    

   如何解决ERROR 1819 (HY000): Your password does not satisfy the current policy requirements呢？ 这里直接提供解决方案文末有详细的说明

   必须修改两个全局参数：
   首先，修改validate_password_policy参数的值

   mysql> set global validate_password_policy=0;

   再修改密码的长度

   set global validate_password_length=1;

   
   

   执行修改密码就可以了

   ALTER USER 'root'@'localhost' IDENTIFIED BY 'root123';（ALTER等可以写成小写）

   授权其他机器登陆

   GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'yourpassword' WITH GRANT OPTION;

   
   附卸载mysql
   
   
   
   
   
   
5. 
   
   
   
   
   
   
   同样使用yum
   

   yum -y install mysql mysql-deve mysql-server

   mysql-devel 开发用到的库以及包含文件
   mysql mysql 客户端
   mysql-server 数据库服务器
   安装完成之后，启动mysql
   

   service mysqld start

   然后设置密码

   /usr/bin/mysqladmin -u root password'111111'

   最后一步，允许别的计算机登陆mysql
   

   GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'yourpassword' WITH GRANT OPTION;

   这样你在本地就能用Navicat登陆mysql了
   
   
6.