CentOS7 installing Java 8 and TOMCAT8

Installing JAVA8 preparing to update the software

update

See if Java is already installed

java -version

If it appears, the description is not installed

Uninstall if you have previously installed

#查看内置的JDKrpm -qa | grep jdk#卸载内置的JDKyum remove java-1.6.0-openjdkyum remove java-1.7.0-openjdk

Check whether the wget download tool is installed

If the input wget is displayed as follows:

Note that wget is already installed, and if the prompt does not have a wget command, you must first install the wget as follows:

install wget

Download wget.rpm by offline download
Download wget.rpm upload to Linux server
http://mirrors.163.com/centos/7.2.1511/os/x86_64/Packages/wget-1.14-10.el7_0.1.x86_64.rpm

Installing wget

#安装rpm -ivh wget-1.14-10.el7_0.1.x86_64.rpm

Download java81, RPM installation Download RPM Online

# # # for the + bitwget--No-cookies--No-check-certificate--header"Cookie:gpw_e24=http%3a%2f%2fwww. oracle.com%2f; Oraclelicense=accept-securebackup-cookie " "http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-i586.rpm"# # # for the bitwget--No-cookies--No-check-certificate--header"Cookie:gpw_e24=http%3a%2f%2fwww. oracle.com%2f; Oraclelicense=accept-securebackup-cookie " "http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-x64.rpm"

If the following error is reported:

Refer to the following resolution:
http://blog.csdn.net/angel22xu/article/details/25070373

You can download it again

offline Download RPM

：
http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-x64.rpm? authparam=1462805862_8be369be38fdce92bf8162c929be817b

Upload the downloaded RPM file to the Linux server and install

Install RPM

-ivh jdk-8u91-linux-x64.rpm

Test whether the installation was successful

java -version

As follows:

2, tar.gz installation (I use this way) Download tar.gz Online

wget http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-x64.tar.gz?AuthParam=1462934736_6fb6b206c0b3018e3ad5642e2893687b

offline Download tar.gz

：
Http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-x64.tar.gz? authparam=1462934736_6fb6b206c0b3018e3ad5642e2893687b

Upload the tar.gz file up

Unzip the installation tar.gz

#上传解压tar -zxvf jdk-8u91-linux-x64.tar.gz -C /opt/soft

Configuring Environment variables

# 修改配置文件vi /etc/profile# 在export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL下添加export JAVA_HOME=/opt/soft/jdk1.8.0_91export PATH=$JAVA_HOME/bin:$PATHexport CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar# 刷新配置文件source /etc/profile

Test above

CentOS7 successfully installed JAVA8

Installing TOMCAT8

This is installed using an offline decompression tar.gz method.

Download:

wget http://mirror.bit.edu.cn/apache/tomcat/tomcat-8/v8.0.33/bin/apache-tomcat-8.0.33.tar.gz

Extract:

-zxvf apache-tomcat-8.0.33.tar.-C /opt/soft

To start Tomcat:

cd /opt/soft/apache-tomcat-8.0.33/bin/

Add port 8080 to the firewall exception and restart

firewall-cmd--zone=public--add-port=8080/tcp--permanentfirewall-cmd--reload

Access 8080-Port testing

CentOS7 installing Java 8 and TOMCAT8