Install and configure the Java (JDK, MySQL, Tomcat) Web running environment on Linux.

Article category: Java programming

Keywords: Linux Java Runtime Environment configuration MySQL JDK Tomcat

To enable Web applications, that is, websites, the first task is to install the running environment and configure the environment accordingly.

This article describes in detail how to build and configure a Java Web runtime environment on Linux (RedHat or other UNIX.

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|Step 2: prepare the required Installation Software

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(1) JDK: j2sdk-1_4_2_09-linux-i586.bin; 34.7 MB (36,429,599 bytes)

(2) WEB: jakarta-tomcat-4.1.31.tar.gz; 7.68 MB (8,058,534 bytes)

(3) DB: mysql-standard-4.1.15-pc-linux-gnu-i686-glibc23.tar.gz; 24.1 MB (25,276,587 bytes)

(4) jar: mysql-connector-java-3.1.11-bin.jar; 430 KB (440,483 bytes)

(4) is the jar package of mysql. After installing mysql, copy it to the mysql directory.

For mysql, try not to use versions earlier than 4.1.15 because UTF-8 encoding is not supported.

Some linux versions such as redhat will install a mysql by default during system installation. please uninstall it with the rpm command first.

The environment is relatively old. Please forgive me. I am used to this one and it is relatively stable. I have not changed it yet.

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|Step 2: Upload the software FTP to the Linux Server

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Upload the above installation software to a directory on linux using ftp, for example, temporarily put it in the/home directory.

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|Step 2 install JDK (j2sdk-1_4_2_09-linux-i586.bin)

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3.1 modify the installation package file to be executable

Reference chmod a + x j2sdk-1_4_2_09-linux-i586.bin

3.2 Installation started

Reference./j2sdk-1_4_2_09-linux-i586.bin

3.3 move to the specified installation and running directory

Reference mv j2sdk1.4.2 _ 09/usr/local/jdk1.4.2

Note: If you use the report image generation function such as jfreechat, and the report image contains Chinese characters, you must make the following settings.

Rename/usr/local/jdk1.4.2/jre/lib/font. properties. zh_CN.Redhat to font. properties,

Change the name of the original font. properties file to font. properties. old for backup.

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|Step 2: Install MySQL (mysql-standard-4.1.15-pc-linux-gnu-i686-glibc23.tar.gz)

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4.1 decompress the file

Reference tar xvzf mysql-standard-4.1.15-pc-linux-gnu-i686-glibc23.tar.gz

4.2 configure, install, and move

Reference cd mysql-standard-4.1.15-pc-linux-gnu-i686-glibc23

./Configure -- prefix =/usr/local/mysql

Music mysql-standard-4.1.15-pc-linux-gnu-i686-glibc23/usr/local/mysql

The default installation directory of mysql is/usr/local/mysql. If you do not want to install it in this directory, you must modify the mysql file (bin/mysqld_safe ), replace all '/usr/local/mysql' with the directory you want.

4.3 set the mysql user group and user)

Reference groupadd mysql; useradd-g mysql; cd/usr/local; chown-R mysql; chgrp-R mysql

4.4 start mysql

Reference/usr/local/mysql/bin/mysqld_safe-u mysql &

4.5 stop mysql

Reference/usr/local/mysql/bin/mysqladmin shutdown-u root

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|Step 2: install Tomcat (jakarta-tomcat-4.1.31.tar.gz)

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5.1 decompress the file

Reference tar zxvf jakarta-tomcat-4.1.31.tar.gz

5.2 move to the specified running directory

Reference music jakarta-tomcat-4.1.31/usr/local/tomcat4.1.31

5.3 copy the mysql-connector-java-3.1.11-bin.jar to/usr/local/tomcat4.1.31/common/lib

5.4 modify jvm memory count

Vi/usr/local/tomcat4.1.31/bin/catalina. sh Add the configuration JAVA_OPTS = '-Xms128m-xmx512m'

The specific location can be placed below:

Reference # JPDA_ADDRESS (Optional) Java runtime options used when the "jpda start"

# Command is executed. The default is 8000.

#

# Jsse_home (optional) may point at your Java Secure Sockets Extension

# (JSSE) installation, whose jar files will be added to

# System class path used to start Tomcat.

#

# Catalina_pid (optional) path of the file which shoshould contains the PID

# Of Catalina startup Java Process, when start (fork) is used

#

# $ Id: catalina. sh, v 1.37 15:20:15 markt Exp $

#-----------------------------------------------------------------------------



JAVA_OPTS = '-Xms128m-xmx512m'

# OS specific support. $ var _ must _ be set to either true or false.

Cygwin = false

Os400 = false

Note:

On unix/linux platforms, jdk cannot use the lib library of AWT for Image Generation and display. Therefore, the following configuration must be performed:

(1) This configuration is required for the jdk version. jdk 1.4.2 or later must be used, and jdk 1.4.1 cannot be used (tested ).

(2) modify the tomcat configuration file vi/usr/local/tomcat4.1.31/bin/catalina. sh

Add the string "-Djava. awt. headless = true/" to the following position in the file /"

Reference elif ["$1" = "start"]; then

Shift

Touch "$ CATALINA_BASE"/logs/catalina. out

If ["$1" = "-security"]; then

Echo "Using Security Manager"

Shift

"$ _ RUNJAVA" $ JAVA_OPTS $ CATALINA_OPTS/

-Djava. endorsed. dirs = "$ JAVA_ENDORSED_DIRS"-classpath "$ CLASSPATH "/

-Djava. security. manager/

-Djava. security. policy = "$ CATALINA_BASE"/conf/catalina. policy/

-Dcatalina. base = "$ CATALINA_BASE "/

-Dcatalina. home = "$ CATALINA_HOME "/

-Djava. io. tmpdir = "$ CATALINA_TMPDIR "/

-Djava. awt. headless = true/

Org. apache. catalina. startup. Bootstrap "$ @" start/

> "$ CATALINA_BASE"/logs/catalina. out 2> & 1 &

If [! -Z "$ CATALINA_PID"]; then

Echo $! > $ CATALINA_PID

Fi

Else

"$ _ RUNJAVA" $ JAVA_OPTS $ CATALINA_OPTS/

-Djava. endorsed. dirs = "$ JAVA_ENDORSED_DIRS"-classpath "$ CLASSPATH "/

-Dcatalina. base = "$ CATALINA_BASE "/

-Dcatalina. home = "$ CATALINA_HOME "/

-Djava. io. tmpdir = "$ CATALINA_TMPDIR "/

-Djava. awt. headless = true/

Org. apache. catalina. startup. Bootstrap "$ @" start/

> "$ CATALINA_BASE"/logs/catalina. out 2> & 1 &

If [! -Z "$ CATALINA_PID"]; then

Echo $! > $ CATALINA_PID

By now, all the software has been installed, and some configuration is required.

1. MySQL requires a configuration file my. CNF
(The file is included in the zip package in my attachment). You must put the file in the/etc directory of the linux server.

It mainly sets the database to adopt UTF-8 encoding, and also uses this configuration file to adjust various mysql running parameters.

Reference [client]

# Password = your_password

Default-character-set = utf8

Port = 3306

Socket =/tmp/mysql. sock

# Here follows entries for some specific programs

# The MySQL server

[Mysqld]

Default-character-set = utf8

Default-collation = utf8_general_ci

Port = 3306

Socket =/tmp/mysql. sock

2. mysql root User initialization password and adding a common user

Execute Command

Reference/usr/local/mysql/bin/mysqld_safe-u mysql &

/Usr/local/mysql/bin/mysql-uroot-p

Use mysql

# Set root password

Reference update user set password = password ('20140901') where user = 'root ';

Flush privileges;

# Create a database: testdb

Reference create database testdb default character set utf8 COLLATE utf8_general_ci;

# Create a test user for testdb database: username = testuser, password = testuser123

Reference delete from user where user = 'testuser ';

Insert into user (Host, User, password, Select_priv, Insert_priv,
Update_priv, Delete_priv, Create_priv, Drop_priv, Reload_priv,
Shutdown_priv, Process_priv, File_priv, Grant_priv, References_priv,
Index_priv, Alter_priv, Show_db_priv, Super_priv,
Create_tmp_table_priv, Lock_tables_priv, Execute_priv, Repl_slave_priv,
Repl_client_priv, ssl_type, ssl_cipher, x509_issuer, x509_subject,
Max_questions, max_updates, max_connections) VALUES ('%', 'testuser ',
'', 'N ', 'N', 'n ',
'N', 'n ','','', '','', 0, 0, 0 );

Update user set password = password ('testuser123') where user = 'testuser ';

Delete from db where user = 'testuser ';

Insert
Db (host, db, user, Select_priv, Insert_priv, Update_priv, Delete_priv, Lock_tables_priv)
Values ('%', 'testdb', 'testuser', 'y ');

Flush privileges;

3. Configure two configuration files under the conf directory of tomcat
: Server. xml, web. xml

For more information about the configuration, see the file in the attachment zip package.

You can configure virtual hosts through server. XML to allow many websites to share port 80 of Tomcat. (After Tomcat is installed, port 8080 is used by default. If it is placed on the Internet, change it to port 80)

4. Create a tomcat Startup Script File
, The content is as follows (if it is saved as startweb. Sh, You need to modify the attribute to execute chmod A + x startweb. Sh ):

Reference export java_home =/usr/local/jdk1.4.2

Export Path = $ java_home/bin: $ path

Export classpath = $ java_home/lib: $ java_home/JRE/lib/RT. jar :.

/Usr/local/tomcat4.1.31/bin/shutdown. Sh

/Usr/local/MySQL/bin/mysqladmin shutdown-u root-pabcxyz123456

I = 'ps-Ef | grep-e "Java" | grep-V grep | awk '{print $2 }''

Kill-9 $ I

I1 = 'ps-Ef | grep-e "mysqld_safe" | grep-V grep | awk '{print $2 }''

Kill-9 $ I1

/Usr/local/MySQL/bin/mysqld_safe-u MySQL &

/Usr/local/tomcat4.1.31/bin/startup. Sh

If you want to start or restart tomcat, you only need to execute this script file.

5. Set tomcat to self-start.

In the/etc/rc. d/rc. Local file, add

Reference/Script directory/startweb. Sh

So far, the Java Web environment has been installed, and all the software has been installed in the directory
/Usr/local/directory. because the corresponding installation software is relatively large, it is not provided here, and you need to download the corresponding software on your own. if the installation software you find is different from the one mentioned above
Same, please refer to the above installation and configuration methods, different software versions, installation and configuration may be different.