阿里云服务器搭建java环境（jdk+tomcat+oracle11g）
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一、JDK配置
1、在centos 7的更新源中有JDK，使用yum即可下载安装
查看库中版本 [root@localhost ~]# yum search java|grep jdk 选择需要版本进行安装 [root@localhost ~]# yum install java-1.8.0-openjdk.x86_64 //安装目录是在: /usr/lib/jvm/java-1.8.0-openjdkXXX 设置环境变量 [root@localhost ~]# vi /etc/profile #set java environment 如果无效的话，加到 vim ~/.bash_profile JAVA_HOME=/usr/lib/jvm/java-1.8-openjdk //注意修改路径 JRE_HOME=$JAVA_HOME/jre CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin export JAVA_HOME JRE_HOME CLASS_PATH PATH [root@localhost java]# source /etc/profile //使修改生效
二、安装tomcat
下载好apache-tomcat-7.0.69.tar.gz，xhell上传Centos 7
1、解压：
tar -zxvf apache-tomcat-7.0.69.tar.gz -C /usr/java/tomcat7
解压完整后删除安装包：
rm –f apache-tomcat-7.0.69.tar.gz
首先我们来配置一下tomcat的环境变量和内存设置，进入tomcat的bin目录后通过vi命令打开catalina.sh文件，并在其中加入如下配置：
JAVA_OPTS="-Xms512m -Xmx1024m -Xss1024K -XX:PermSize=512m -XX:MaxPermSize=1024m"
export JAVA_HOME=/usr/java/jdk/jdk1.7.0_80
export CATALINA_HOME=/usr/java/tomcat7/apache-tomcat-7.0.69
export CATALINA_BASE=/usr/java/tomcat7/apache-tomcat-7.0.69
export CATALINA_TMPDIR=/usr/java/tomcat7/apache-tomcat-7.0.69/temp
2、修改server.xml ，修改端口号，添加域名。阿里云默认只开放商用80端口
3、查验（服务器响应时间，有延迟，等会就好）
[root@izuf64t2yduyjgxweag0f5z conf]# curl 127.0.0.1 //出现如下内容，表明外网地址对外发布。
<!DOCTYPE html> <html lang="en"> <head> <title>Apache Tomcat/7.0.69</title> <link href="favicon.ico" rel="icon" type="image/x-icon" /> <link href="favicon.ico" rel="shortcut icon" type="image/x-icon" /> <link href="tomcat.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="wrapper"> <div id="navigation" class="curved container"> <span id="nav-home"><a href="http://tomcat.apache.org/">Home</a></span> <span id="nav-hosts"><a href="/docs/">Documentation</a></span> <span id="nav-config"><a href="/docs/config/">Configuration</a></span> <span id="nav-examples"><a href="/examples/">Examples</a></span> <span id="nav-wiki"><a href="http://wiki.apache.org/tomcat/FrontPage">Wiki</a></span> <span id="nav-lists"><a href="http://tomcat.apache.org/lists.html">Mailing Lists</a></span> <span id="nav-help"><a href="http://tomcat.apache.org/findhelp.html">Find Help</a></span> <br class="separator" /> </div> <div id="asf-box"> <h1>Apache Tomcat/7.0.69</h1> </div> <div id="upper" class="curved container"> <div id="congrats" class="curved container"> <h2>If you\'re seeing this, you\'ve successfully installed Tomcat. Congratulations!</h2> </div> <div id="notice"> <img src="tomcat.png" alt="[tomcat logo]" /> <div id="tasks"> <h3>Recommended Reading:</h3> <h4><a href="/docs/security-howto.html">Security Considerations HOW-TO</a></h4> <h4><a href="/docs/manager-howto.html">Manager Application HOW-TO</a></h4> <h4><a href="/docs/cluster-howto.html">Clustering/Session Replication HOW-TO</a></h4> </div> </div> <div id="actions"> <div class="button"> <a class="container shadow" href="/manager/status"><span>Server Status</span></a> </div> <div class="button"> <a class="container shadow" href="/manager/html"><span>Manager App</span></a> </div> <div class="button"> <a class="container shadow" href="/host-manager/html"><span>Host Manager</span></a> </div> </div> <!-- <br class="separator" /> --> <br class="separator" /> </div> <div id="middle" class="curved container"> <h3>Developer Quick Start</h3> <div class="col25"> <div class="container"> <p><a href="/docs/setup.html">Tomcat Setup</a></p> <p><a href="/docs/appdev/">First Web Application</a></p> </div> </div> <div class="col25"> <div class="container"> <p><a href="/docs/realm-howto.html">Realms & AAA</a></p> <p><a href="/docs/jndi-datasource-examples-howto.html">JDBC DataSources</a></p> </div> </div> <div class="col25"> <div class="container"> <p><a href="/examples/">Examples</a></p> </div> </div> <div class="col25"> <div class="container"> <p><a href="http://wiki.apache.org/tomcat/Specifications">Servlet Specifications</a></p> <p><a href="http://wiki.apache.org/tomcat/TomcatVersions">Tomcat Versions</a></p> </div> </div> <br class="separator" /> </div> <div id="lower"> <div id="low-manage" class=""> <div class="curved container"> <h3>Managing Tomcat</h3> <p>For security, access to the <a href="/manager/html">manager webapp</a> is restricted. Users are defined in:</p> <pre>$CATALINA_HOME/conf/tomcat-users.xml</pre> <p>In Tomcat 7.0 access to the manager application is split between different users. <a href="/docs/manager-howto.html">Read more...</a></p> <br /> <h4><a href="/docs/RELEASE-NOTES.txt">Release Notes</a></h4> <h4><a href="/docs/changelog.html">Changelog</a></h4> <h4><a href="http://tomcat.apache.org/migration.html">Migration Guide</a></h4> <h4><a href="http://tomcat.apache.org/security.html">Security Notices</a></h4> </div> </div> <div id="low-docs" class=""> <div class="curved container"> <h3>Documentation</h3> <h4><a href="/docs/">Tomcat 7.0 Documentation</a></h4> <h4><a href="/docs/config/">Tomcat 7.0 Configuration</a></h4> <h4><a href="http://wiki.apache.org/tomcat/FrontPage">Tomcat Wiki</a></h4> <p>Find additional important configuration information in:</p> <pre>$CATALINA_HOME/RUNNING.txt</pre> <p>Developers may be interested in:</p> <ul> <li><a href="http://tomcat.apache.org/bugreport.html">Tomcat 7.0 Bug Database</a></li> <li><a href="/docs/api/index.html">Tomcat 7.0 JavaDocs</a></li> <li><a href="http://svn.apache.org/repos/asf/tomcat/tc7.0.x/">Tomcat 7.0 SVN Repository</a></li> </ul> </div> </div> <div id="low-help" class=""> <div class="curved container"> <h3>Getting Help</h3> <h4><a href="http://tomcat.apache.org/faq/">FAQ</a> and <a href="http://tomcat.apache.org/lists.html">Mailing Lists</a></h4> <p>The following mailing lists are available:</p> <ul> <li id="list-announce"><strong><a href="http://tomcat.apache.org/lists.html#tomcat-announce">tomcat-announce</a><br /> Important announcements, releases, security vulnerability notifications. (Low volume).</strong> </li> <li><a href="http://tomcat.apache.org/lists.html#tomcat-users">tomcat-users</a><br /> User support and discussion </li> <li><a href="http://tomcat.apache.org/lists.html#taglibs-user">taglibs-user</a><br /> User support and discussion for <a href="http://tomcat.apache.org/taglibs/">Apache Taglibs</a> </li> <li><a href="http://tomcat.apache.org/lists.html#tomcat-dev">tomcat-dev</a><br /> Development mailing list, including commit messages </li> </ul> </div> </div> <br class="separator" /> </div> <div id="footer" class="curved container"> <div class="col20"> <div class="container"> <h4>Other Downloads</h4> <ul> <li><a href="http://tomcat.apache.org/download-connectors.cgi">Tomcat Connectors</a></li> <li><a href="http://tomcat.apache.org/download-native.cgi">Tomcat Native</a></li> <li><a href="http://tomcat.apache.org/taglibs/">Taglibs</a></li> <li><a href="/docs/deployer-howto.html">Deployer</a></li> </ul> </div> </div> <div class="col20"> <div class="container"> <h4>Other Documentation</h4> <ul> <li><a href="http://tomcat.apache.org/connectors-doc/">Tomcat Connectors</a></li> <li><a href="http://tomcat.apache.org/connectors-doc/">mod_jk Documentation</a></li> <li><a href="http://tomcat.apache.org/native-doc/">Tomcat Native</a></以上是关于阿里云服务器搭建java环境（jdk+tomcat+oracle11g）的主要内容，如果未能解决你的问题，请参考以下文章