Update install-jdk.md

learn_server/install-jdk.md

@@ -9,15 +9,15 @@
 上面的连接是stackoverflow有开发者写的不使用cookie下载jdk和jre的命令。
 
 ```bash
-[root@localhost ~]# wget -c --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/jdk-8u131-linux-x64.tar.gz
+[root@localhost ~]# wget -c --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u171-b11/512cd62ec5174c3487ac17c61aaa89e8/jdk-8u171-linux-x64.tar.gz
 ```
 
 ## 解压
 
 ```bash
-[root@localhost ~]# tar -zxvf jdk-8u131-linux-x64.tar.gz
+[root@localhost ~]# tar -zxvf jdk-8u171-linux-x64.tar.gz
 [root@localhost ~]# mkdir /usr/local/java
-[root@localhost ~]# mv jdk1.8.0_131/ /usr/local/java/
+[root@localhost ~]# mv jdk1.8.0_171/ /usr/local/java/
 ```
 
 ## 配置环境变量
@@ -30,8 +30,8 @@
 
 ```bash
 # java
-export JAVA_HOME=/usr/local/java/jdk1.8.0_131
-export JRE_HOME=/usr/local/java/jdk1.8.0_131/jre
+export JAVA_HOME=/usr/local/java/jdk1.8.0_171
+export JRE_HOME=/usr/local/java/jdk1.8.0_171/jre
 export CLASSPATH=.:$JRE_HOME/lib/dt.jar:$JRE_HOME/lib/tools.jar
 export PATH=$JRE_HOME/bin:$JRE_HOME/bin:$PATH
 ```
@@ -42,8 +42,8 @@ export PATH=$JRE_HOME/bin:$JRE_HOME/bin:$PATH
 [root@localhost ~]# source /etc/profile
 [root@localhost ~]# java -version
 java version "1.8.0_131"
-Java(TM) SE Runtime Environment (build 1.8.0_131-b14)
-Java HotSpot(TM) 64-Bit Server VM (build 25.131-b14, mixed mode)
+Java(TM) SE Runtime Environment (build 1.8.0_171-b14)
+Java HotSpot(TM) 64-Bit Server VM (build 25.171-b14, mixed mode)
 ```
 这里我安装的是最新版的JDK。