centos安装jdk、tomcat、maven搭建java环境

因为java项目要部署到服务器上，需要把环境装好，根据之前的记录总结下

注意：将下面的软件包替换为实际的

1、安装jdk

1）下载jdk，我的是jdk-7u76-linux-x64.tar.gz，并上传到/usr/java
#cd /usr/java
#tar -xf jdk-7u67-linux-x64.tar.gz
2）配置环境变量，修改/etc/profile文件
#vim /etc/profile
在末尾添加如下内容：
export JAVA_HOME=/usr/java/jdk1.7.0_67
export JRE_HOME=/usr/java/jdk1.7.0_67/jre
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH
执行如下命令是配置立马生效：
#source /etc/profile
3）输入java命令，看看是否生效，结果如下说明成功

# java -version
java version "1.7.0_76"
Java(TM) SE Runtime Environment (build 1.7.0_76-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.76-b04, mixed mode)

2、安装tomcat
1）下载tomcat，我的是apache-tomcat-7.0.62.tar.gz，并上传到/usr/java
#cd /usr/java
#tar -xf apache-tomcat-7.0.62.tar.gz
2）配置环境变量
#sudo vim /etc/profile
在末尾添加如下内容：
export export TOMCAT_HOME=/usr/java/apache-tomcat-7.0.62
export PATH=$PATH:$TOMCAT_HOME/bin
执行如下命令是配置立马生效：
#source /etc/profile
3）启动tomcat
执行如下命令：

#cd /usr/java/apache-tomcat-7.0.62
#./bin/startup.sh
Using CATALINA_BASE:   /usr/java/apache-tomcat-7.0.62
Using CATALINA_HOME:   /usr/java/apache-tomcat-7.0.62
Using CATALINA_TMPDIR: /usr/java/apache-tomcat-7.0.62/temp
Using JRE_HOME:        /usr/java/jdk1.7.0_76/jre
Using CLASSPATH:       /usr/java/apache-tomcat-7.0.62/bin/bootstrap.jar:/usr/java/apache-tomcat-7.0.62/bin/tomcat-juli.jar
Tomcat started.

此时，在浏览器打开http://域名:8080，可以看到如下页面，表示安装成功

可以执行如下命令关闭tomcat：

#cd /usr/java/apache-tomcat-7.0.62
#./bin/shutdown.sh
Using CATALINA_BASE:   /usr/java/apache-tomcat-7.0.62
Using CATALINA_HOME:   /usr/java/apache-tomcat-7.0.62
Using CATALINA_TMPDIR: /usr/java/apache-tomcat-7.0.62/temp
Using JRE_HOME:        /usr/java/jdk1.7.0_76/jre
Using CLASSPATH:       /usr/java/apache-tomcat-7.0.62/bin/bootstrap.jar:/usr/java/apache-tomcat-7.0.62/bin/tomcat-juli.jar

3、安装maven
1）下载maven，我的是apache-maven-3.3.9.tar.gz，并上传到/usr/java
#cd /usr/java
#tar -xf apache-maven-3.3.9.tar.gz
2）配置环境变量
#sudo vim /etc/profile
在末尾添加如下内容：
export M2_HOME=/usr/java/apache-maven-3.3.9
export PATH=$PATH:$M2_HOME/bin
执行如下命令是配置立马生效：
#source /etc/profile
3）输入mvn --help命令，如果有下面结果说明安装成功：

# mvn --help
usage: mvn [options] [<goal(s)>] [<phase(s)>]


Options:
 -am,--also-make                        If project list is specified, also
                                        build projects required by the
                                        list
 -amd,--also-make-dependents            If project list is specified, also
                                        build projects that depend on
                                        projects on the list
 -B,--batch-mode                        Run in non-interactive (batch)
                                        mode
 -b,--builder <arg>                     The id of the build strategy to
                                        use.
 -C,--strict-checksums                  Fail the build if checksums don't
                                        match
 -c,--lax-checksums                     Warn if checksums don't match
 -cpu,--check-plugin-updates            Ineffective, only kept for
                                        backward compatibility
 -D,--define <arg>                      Define a system property
 -e,--errors                            Produce execution error messages
 -emp,--encrypt-master-password <arg>   Encrypt master security password
 -ep,--encrypt-password <arg>           Encrypt server password
 -f,--file <arg>                        Force the use of an alternate POM
                                        file (or directory with pom.xml).
 -fae,--fail-at-end                     Only fail the build afterwards;
                                        allow all non-impacted builds to
                                        continue
 -ff,--fail-fast                        Stop at first failure in
                                        reactorized builds
 -fn,--fail-never                       NEVER fail the build, regardless
                                        of project result
 -gs,--global-settings <arg>            Alternate path for the global
                                        settings file
 -gt,--global-toolchains <arg>          Alternate path for the global
                                        toolchains file
 -h,--help                              Display help information
 -l,--log-file <arg>                    Log file where all build output
                                        will go.
 -llr,--legacy-local-repository         Use Maven 2 Legacy Local
                                        Repository behaviour, ie no use of
                                        _remote.repositories. Can also be
                                        activated by using
                                        -Dmaven.legacyLocalRepo=true
 -N,--non-recursive                     Do not recurse into sub-projects
 -npr,--no-plugin-registry              Ineffective, only kept for
                                        backward compatibility
 -npu,--no-plugin-updates               Ineffective, only kept for
                                        backward compatibility
 -nsu,--no-snapshot-updates             Suppress SNAPSHOT updates
 -o,--offline                           Work offline
 -P,--activate-profiles <arg>           Comma-delimited list of profiles
                                        to activate
 -pl,--projects <arg>                   Comma-delimited list of specified
                                        reactor projects to build instead
                                        of all projects. A project can be
                                        specified by [groupId]:artifactId
                                        or by its relative path.
 -q,--quiet                             Quiet output - only show errors
 -rf,--resume-from <arg>                Resume reactor from specified
                                        project
 -s,--settings <arg>                    Alternate path for the user
                                        settings file
 -T,--threads <arg>                     Thread count, for instance 2.0C
                                        where C is core multiplied
 -t,--toolchains <arg>                  Alternate path for the user
                                        toolchains file
 -U,--update-snapshots                  Forces a check for missing
                                        releases and updated snapshots on
                                        remote repositories
 -up,--update-plugins                   Ineffective, only kept for
                                        backward compatibility
 -V,--show-version                      Display version information
                                        WITHOUT stopping build
 -v,--version                           Display version information
 -X,--debug                             Produce execution debug output

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