Linux (20) Building Java EE Environment

If you need to develop Java EE under Linux, we need to install the following software:

First upload the software to/opt via XFTP5

20.1 Installing the JDK

(1) Extract to/opt

(2) Configuring the configuration file for environment variables Vim/etc/profile

Press g to switch to the last line, press I to edit, ESC exit, and then enter: qw!, save exit!

(3) need to log off the user, environment variables to take effect

(4) Java or javac can be used in any directory

(5) test whether the installation is successful, write a simple Hello.java

20.2 Installing Tomcat

(1) Unzip to/opt

(2) to start Tomcat, go to Tomcat's Bin directory and enter./startup.sh

If you are not telnet to Linux, and you are running at level 5, you can access it using a Linux browser.

(3) Open port 8080 so that the extranet can access the Tomcat

Yy+c Copy the 22 port line, then modify it to 8080.

Restarting the firewall

(4) test whether the installation is successful, enter http://linuxip:8080 in the browser of window

Installation of 20.3 eclipse

(1) Unzip to/opt

(2) Start Eclipse, configure JRE and server

Start Mode 1: Create a shortcut

Start Mode 2: Enter the folder after the Eclipse decompression, then execute the./eclipse

(3) write the JSP and test the success

16.4 MySQL Installation and configuration

CentOS 6.8 under compile and install MySQL5.6.14

(1) Uninstall old version

Use the following command to check if MySQL Server is installed

Rpm-qa | grep MySQL

Some words are unloaded by the following command

Now we have a query, then remove it.

RPM-E mysql-libs-5.1.73-7.el6.x86_64//Normal Delete mode

RPM-E--nodeps mysql-libs-5.1.73-7.el6.x86_64//Strong Delete mode, if you use the above command to delete, prompted to have other dependent files, then use this command can be strongly deleted

Check again and make sure there's no MySQL.

(2) Installing MySQL

Install packages required for compiling code

Yum-y install make gcc-c++ cmake bison-devel ncurses-devel

Extract

TAR-ZXVF mysql-5.6.14.tar.gz

CD mysql-5.6.14

Compiling the installation

Cmake-dcmake_install_prefix=/usr/local/mysql-dmysql_datadir=/usr/local/mysql/data-dsysconfdir=/etc-dwith_ Myisam_storage_engine=1-dwith_innobase_storage_engine=1-dwith_memory_storage_engine=1-dwith_readline=1-dmysql_ Unix_addr=/var/lib/mysql/mysql.sock-dmysql_tcp_port=3306-denabled_local_infile=1-dwith_partition_storage_ Engine=1-dextra_charsets=all-ddefault_charset=utf8-ddefault_collation=utf8_general_ci

Compiling and installing

Make && make install

The whole process takes about 30 minutes ... A long wait

(3) Configuring MySQL

Set permissions

Use the following command to see if there are MySQL users and user groups

CAT/ETC/PASSWD View the list of users

Cat/etc/group viewing a list of user groups

If not, create

Groupadd MySQL

useradd-g MySQL MySQL

Modify/usr/local/mysql Permissions

Chown-r Mysql:mysql/usr/local/mysql

Initialize the configuration, go to the installation path (execute the instructions below), execute the initialization configuration script, create the system's own database and table

Cd/usr/local/mysql

scripts/mysql_install_db--basedir=/usr/local/mysql--datadir=/usr/local/mysql/data--user=mysql [This is an instruction]

Note: When starting the MySQL service, will be in a certain order to search my.cnf, first in the/etc directory, find will search "$basedir/my.cnf", in this case is/usr/local/mysql/ MY.CNF, this is the default location for the new MySQL configuration file!

Note: After the minimum installation of the CentOS6.8 version of the operating system is complete, there will be a my.cnf in the/etc directory, which needs to be renamed to another name, such as:/etc/ My.cnf.bak, otherwise, the file will interfere with the correct configuration of the source installed MySQL, resulting in the inability to start.

Modify the name to prevent interference:

Mv/etc/my.cnf/etc/my.cnf.bak

Not in my system, just ignore it. For

Start MySQL

Add services, Copy service scripts to the INIT.D directory, and set boot boot

[Note intended to be executed under/usr/local/mysql]

CP Support-files/mysql.server/etc/init.d/mysql

Chkconfig MySQL on

Service MySQL Start--start MySQL

Execute the following command to modify the root password

Cd/usr/local/mysql/bin

./mysql-uroot

mysql> SET PASSWORD = PASSWORD (' 123456 ');

Simple to use:

show databases;

Create a database DB1

Create a table user

Add a user, if successful, the installation of our database is successful!

This is the next time you log in!

Linux (20) Building Java EE Environment