Tomcat多虚拟站点配置

冰镇可乐

　　参考资料：Apache Tomcat文档http://tomcat.apache.org/tomcat-5.0-doc/config/host.html
　　在文中有这么一段话：
　　One or more Host elements are nested inside an Engine element. Inside the Host element, you can nest Context elements for the web applications associated with this virtual host. Exactly one of the Hosts associated with each Engine MUST have a name matching the defaultHost attribute of that Engine.
　　译文：Engine元素中需要一个或多个Host元素，在Host元素里面，你必需有Context元素让网站应用程序与虚拟主机连接上，严密地说,每一个主机所关联的引擎必须有一个名字跟那个引擎默认的主机属性匹配 ．
　　可知，在Engine元素里面可以有多个Host，那么说，可以有在一个Engine里面设置多个服务器了，这正是我们需要的．每个Host元素里面要有一个Context元素．
　　根据conf/server.xml里面的说明和范例，我样可以编写出下面一个配置文件：
　　<!-- Example Server Configuration File --><!-- Note that component elements are nested corresponding to theirparent-child relationships with each other --><!-- A "Server" is a singleton element that represents the entire JVM,which may contain one or more "Service" instances.  The Serverlistens for a shutdown command on the indicated port.Note:  A "Server" is not itself a "Container", so you may notdefine subcomponents such as "Valves" or "Loggers" at this level.--><Server port="8005" shutdown="SHUTDOWN"><!-- Comment these entries out to disable JMX MBeans support used for theadministration web application --><Listener className="org.apache.catalina.core.AprLifecycleListener" /><Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" /><Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" /><Listener className="org.apache.catalina.storeconfig.StoreConfigLifecycleListener"/><!-- Global JNDI resources --><GlobalNamingResources><!-- Test entry for demonstration purposes --><Environment name="simpleValue" type="java.lang.Integer" value="30"/><!-- Editable user database that can also be used byUserDatabaseRealm to authenticate users --><Resource name="UserDatabase" auth="Container"type="org.apache.catalina.UserDatabase"description="User database that can be updated and saved"factory="org.apache.catalina.users.MemoryUserDatabaseFactory"pathname="conf/tomcat-users.xml" /></GlobalNamingResources><!-- A "Service" is a collection of one or more "Connectors" that sharea single "Container" (and therefore the web applications visiblewithin that Container).  Normally, that Container is an "Engine",but this is not required.Note:  A "Service" is not itself a "Container", so you may notdefine subcomponents such as "Valves" or "Loggers" at this level.--><!-- Define the Tomcat Stand-Alone Service --><Service name="Catalina"><!-- A "Connector" represents an endpoint by which requests are receivedand responses are returned.  Each Connector passes requests on to theassociated "Container" (normally an Engine) for processing.By default, a non-SSL HTTP/1.1 Connector is established on port 8080.You can also enable an SSL HTTP/1.1 Connector on port 8443 byfollowing the instructions below and uncommenting the second Connectorentry.  SSL support requires the following steps (see the SSL ConfigHOWTO in the Tomcat 5 documentation bundle for more detailedinstructions):* If your JDK version 1.3 or prior, download and install JSSE 1.0.2 orlater, and put the JAR files into "$JAVA_HOME/jre/lib/ext".* Execute:%JAVA_HOME%/bin/keytool -genkey -alias tomcat -keyalg RSA (Windows)$JAVA_HOME/bin/keytool -genkey -alias tomcat -keyalg RSA  (Unix)with a password value of "changeit" for both the certificate andthe keystore itself.By default, DNS lookups are enabled when a web application callsrequest.getRemoteHost().  This can have an adverse impact onperformance, so you can disable it by setting the"enableLookups" attribute to "false".  When DNS lookups are disabled,request.getRemoteHost() will return the String version of theIP address of the remote client.--><!-- Define a non-SSL HTTP/1.1 Connector on port 8080 --><Connectorport="80"               maxHttpHeaderSize="8192"maxThreads="150" minSpareThreads="25" maxSpareThreads="75"enableLookups="false" redirectPort="8443" acceptCount="100"connectionTimeout="20000" disableUploadTimeout="true"  URIEncoding="GB2312"/><!-- Note : To disable connection timeouts, set connectionTimeout valueto 0 --><!-- Note : To use gzip compression you could set the following properties :compression="on"compressionMinSize="2048"noCompressionUserAgents="gozilla, traviata"compressableMimeType="text/html,text/xml"--><!-- Define a SSL HTTP/1.1 Connector on port 8443 --><!--<Connector port="8443" maxHttpHeaderSize="8192"maxThreads="150" minSpareThreads="25" maxSpareThreads="75"enableLookups="false" disableUploadTimeout="true"acceptCount="100" scheme="https" secure="true"clientAuth="false" sslProtocol="TLS" />--><!-- Define an AJP 1.3 Connector on port 8009 --><Connector port="8009"enableLookups="false" redirectPort="8443" protocol="AJP/1.3" /><!-- Define a Proxied HTTP/1.1 Connector on port 8082 --><!-- See proxy documentation for more information about using this. --><!--<Connector port="8082"maxThreads="150" minSpareThreads="25" maxSpareThreads="75"enableLookups="false" acceptCount="100" connectionTimeout="20000"proxyPort="80" disableUploadTimeout="true" />--><!-- An Engine represents the entry point (within Catalina) that processesevery request.  The Engine implementation for Tomcat stand aloneanalyzes the HTTP headers included with the request, and passes themon to the appropriate Host (virtual host). --><!-- You should set jvmRoute to support load-balancing via AJP ie :<Engine name="Standalone" defaultHost="localhost" jvmRoute="jvm1">--><!-- Define the top level container in our container hierarchy --><Engine name="Catalina" defaultHost="ycoe.vicp.net"><!-- The request dumper valve dumps useful debugging information aboutthe request headers and cookies that were received, and the responseheaders and cookies that were sent, for all requests received bythis instance of Tomcat.  If you care only about requests to aparticular virtual host, or a particular application, nest thiselement inside the corresponding <Host> or <Context> entry instead.For a similar mechanism that is portable to all Servlet 2.4containers, check out the "RequestDumperFilter" Filter in theexample application (the source for this filter may be found in"$CATALINA_HOME/webapps/examples/WEB-INF/classes/filters").Request dumping is disabled by default.  Uncomment the followingelement to enable it. --><!--<Valve className="org.apache.catalina.valves.RequestDumperValve"/>--><!-- Because this Realm is here, an instance will be shared globally --><!-- This Realm uses the UserDatabase configured in the global JNDIresources under the key "UserDatabase".  Any editsthat are performed against this UserDatabase are immediatelyavailable for use by the Realm.  --><Realm className="org.apache.catalina.realm.UserDatabaseRealm"resourceName="UserDatabase"/><!-- Comment out the old realm but leave here for now in case weneed to go back quickly --><!--<Realm className="org.apache.catalina.realm.MemoryRealm" />--><!-- Replace the above Realm with one of the following to get a Realmstored in a database and accessed via JDBC --><!--<Realm  className="org.apache.catalina.realm.JDBCRealm"driverName="org.gjt.mm.mysql.Driver"connectionURL="jdbc:mysql://localhost/authority"connectionName="test" connectionPassword="test"userTable="users" userNameCol="user_name" userCredCol="user_pass"userRoleTable="user_roles" roleNameCol="role_name" />--><!--<Realm  className="org.apache.catalina.realm.JDBCRealm"driverName="oracle.jdbc.driver.OracleDriver"connectionURL="jdbc:oracle:thin:@ntserver:1521:ORCL"connectionName="scott" connectionPassword="tiger"userTable="users" userNameCol="user_name" userCredCol="user_pass"userRoleTable="user_roles" roleNameCol="role_name" />--><!--<Realm  className="org.apache.catalina.realm.JDBCRealm"driverName="sun.jdbc.odbc.JdbcOdbcDriver"connectionURL="jdbc:odbc:CATALINA"userTable="users" userNameCol="user_name" userCredCol="user_pass"userRoleTable="user_roles" roleNameCol="role_name" />--><!-- Define the default virtual hostNote: XML Schema validation will not work with Xerces 2.2.--><Host name="ycoe.vicp.net" appBase="webapps"unpackWARs="true" autoDeploy="true"xmlValidation="false" xmlNamespaceAware="false"><!-- Defines a cluster for this node,By defining this element, means that every manager will be changed.So when running a cluster, only make sure that you have webapps in therethat need to be clustered and remove the other ones.A cluster has the following parameters:className = the fully qualified name of the cluster classname = a descriptive name for your cluster, can be anythingmcastAddr = the multicast address, has to be the same for all the nodesmcastPort = the multicast port, has to be the same for all the nodesmcastBindAddr = bind the multicast socket to a specific addressmcastTTL = the multicast TTL if you want to limit your broadcastmcastSoTimeout = the multicast readtimeoutmcastFrequency = the number of milliseconds in between sending a "I'm alive" heartbeatmcastDropTime = the number a milliseconds before a node is considered "dead" if no heartbeat is receivedtcpThreadCount = the number of threads to handle incoming replication requests, optimal would be the same amount of threads as nodestcpListenAddress = the listen address (bind address) for TCP cluster request on this host,in case of multiple ethernet cards.auto means that address becomesInetAddress.getLocalHost().getHostAddress()tcpListenPort = the tcp listen porttcpSelectorTimeout = the timeout (ms) for the Selector.select() method in case the OShas a wakup bug in java.nio. Set to 0 for no timeoutprintToScreen = true means that managers will also print to std.outexpireSessionsOnShutdown = true means thatuseDirtyFlag = true means that we only replicate a session after setAttribute,removeAttribute has been called.false means to replicate the session after each request.false means that replication would work for the following piece of code: (only for SimpleTcpReplicationManager)<%HashMap map = (HashMap)session.getAttribute("map");map.put("key","value");%>replicationMode = can be either 'pooled', 'synchronous' or 'asynchronous'.* Pooled means that the replication happens using several sockets in a synchronous way. Ie, the data gets replicated, then the request return. This is the same as the 'synchronous' setting except it uses a pool of sockets, hence it is multithreaded. This is the fastest and safest configuration. To use this, also increase the nr of tcp threads that you have dealing with replication.* Synchronous means that the thread that executes the request, is also thethread the replicates the data to the other nodes, and will not return until allnodes have received the information.* Asynchronous means that there is a specific 'sender' thread for each cluster node,so the request thread will queue the replication request into a "smart" queue,and then return to the client.The "smart" queue is a queue where when a session is added to the queue, and the same sessionalready exists in the queue from a previous request, that session will be replacedin the queue instead of replicating two requests. This almost never happens, unless there is alarge network delay.--><!--When configuring for clustering, you also add in a valve to catch all the requestscoming in, at the end of the request, the session may or may not be replicated.A session is replicated if and only if all the conditions are met:1. useDirtyFlag is true or setAttribute or removeAttribute has been called AND2. a session exists (has been created)3. the request is not trapped by the "filter" attributeThe filter attribute is to filter out requests that could not modify the session,hence we don't replicate the session after the end of this request.The filter is negative, ie, anything you put in the filter, you mean to filter out,ie, no replication will be done on requests that match one of the filters.The filter attribute is delimited by ;, so you can't escape out ; even if you wanted to.filter=".*/.gif;.*/.js;" means that we will not replicate the session after requests with the URIending with .gif and .js are intercepted.The deployer element can be used to deploy apps cluster wide.Currently the deployment only deploys/undeploys to working members in the clusterso no WARs are copied upons startup of a broken node.The deployer watches a directory (watchDir) for WAR files when watchEnabled="true"When a new war file is added the war gets deployed to the local instance,and then deployed to the other instances in the cluster.When a war file is deleted from the watchDir the war is undeployed locallyand cluster wide--><!--<Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster"managerClassName="org.apache.catalina.cluster.session.DeltaManager"expireSessionsOnShutdown="false"useDirtyFlag="true"notifyListenersOnReplication="true"><MembershipclassName="org.apache.catalina.cluster.mcast.McastService"mcastAddr="228.0.0.4"mcastPort="45564"mcastFrequency="500"mcastDropTime="3000"/><ReceiverclassName="org.apache.catalina.cluster.tcp.ReplicationListener"tcpListenAddress="auto"tcpListenPort="4001"tcpSelectorTimeout="100"tcpThreadCount="6"/><SenderclassName="org.apache.catalina.cluster.tcp.ReplicationTransmitter"replicationMode="pooled"ackTimeout="15000"/><Valve className="org.apache.catalina.cluster.tcp.ReplicationValve"filter=".*/.gif;.*/.js;.*/.jpg;.*/.htm;.*/.html;.*/.txt;"/><Deployer className="org.apache.catalina.cluster.deploy.FarmWarDeployer"tempDir="/tmp/war-temp/"deployDir="/tmp/war-deploy/"watchDir="/tmp/war-listen/"watchEnabled="false"/></Cluster>--><!-- Normally, users must authenticate themselves to each web appindividually.  Uncomment the following entry if you would likea user to be authenticated the first time they encounter aresource protected by a security constraint, and then have thatuser identity maintained across *all* web applications containedin this virtual host. --><!--<Valve className="org.apache.catalina.authenticator.SingleSignOn" />--><!-- Access log processes all requests for this virtual host.  Bydefault, log files are created in the "logs" directory relative to$CATALINA_HOME.  If you wish, you can specify a differentdirectory with the "directory" attribute.  Specify either a relative(to $CATALINA_HOME) or absolute path to the desired directory.--><!--<Valve className="org.apache.catalina.valves.AccessLogValve"directory="logs"  prefix="localhost_access_log." suffix=".txt"pattern="common" resolveHosts="false"/>--><!-- Access log processes all requests for this virtual host.  Bydefault, log files are created in the "logs" directory relative to$CATALINA_HOME.  If you wish, you can specify a differentdirectory with the "directory" attribute.  Specify either a relative(to $CATALINA_HOME) or absolute path to the desired directory.This access log implementation is optimized for maximum performance,but is hardcoded to support only the "common" and "combined" patterns.--><!--<Valve className="org.apache.catalina.valves.FastCommonAccessLogValve"directory="logs"  prefix="localhost_access_log." suffix=".txt"pattern="common" resolveHosts="false"/>--><Context docBase="D:/WORKS/EShop/EWebShop" path="/" reloadable="true" workDir="D:/WORKS/EShop/Tomcat/work/EWebShop"></Context></Host><Host name="yvor.vicp.net" appBase="webapps"unpackWARs="true" autoDeploy="true"xmlValidation="false" xmlNamespaceAware="false"><Context docBase="D:/WORKS/YCOE/ycoe" path="/" reloadable="true" workDir="D:/WORKS/YCOE/Tomcat/work/ycoe"></Context></Host></Engine></Service></Server>
　　可以看到，这里修改了
　　81行修改了两个参数值：<Connector port="80" maxHttpHeaderSize="8192"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true" URIEncoding="GB2312"/>
　　修改port是修改Tomcat的服务端口，默认为8080，URIEncoding改为GB2312是为了使用中文路径
　　　　但不建议使用．
　　125行：<Engine name="Catalina" defaultHost="ycoe.vicp.net">
　　192行：<Host name="ycoe.vicp.net" appBase="webapps" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false">
　　然后再添加360行开始的<Host>元素：<Host name="yvor.vicp.net" appBase="webapps"unpackWARs="true" autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false">
<Context docBase="D:/WORKS/YCOE/ycoe" path="/" reloadable="true"
workDir="D:/WORKS/YCOE/Tomcat/work/ycoe"></Context>
</Host>
　　这里是设置我们的第二个虚拟网站的域名．
　　注：<Context/>里面的内容并不是我们实际应用的，我们可以通过另一种比较方便而且容易修改的方式来设置这些参数．下面我们来做这方面的配置：
　　１．在%CATALINA_HOME %/conf/Catalina目录下创建ycoe.vicp.net和yvor.vicp.net两个文件夹．
　　２．在这两个文件夹里面创建ROOT.xml文件（要以ROOT.xml为名称，否则虽然不会出错，但不能用http://ycoe.vicp.net或http://yvor.vicp.net直接访问）
　　３．ROOT.xml的内容如下：
<?xml version='1.0' encoding='utf-8'?>
<Context docBase="D:/WORKS/EShop/EWebShop" path="/" reloadable="true"
workDir="D:/WORKS/EShop/Tomcat/work/EWebShop">
</Context>
　　根据自己的实际情况，设置这里的docBase 和workDir的路径．docBase是说明文档的路径，workDir是网站程序的路径，如果用相对路径，则是在%CATALINA_HOME %/webapp目录下，path是访问的路径
　　参考官方文档：
　　Any XML file in the $CATALINA_HOME/conf/[engine_name]/[host_name] directory is assumed to contain a Context element (and its associated subelements) for a single web application. The docBase attribute of this <Context> element will typically be the absolute pathname to a web application directory, or the absolute pathname of a web application archive (WAR) file (which will not be expanded).
Any web application archive file within the application base (appBase) directory that does not have a corresponding directory of the same name (without the ".war" extension) will be automatically expanded, unless the unpackWARs property is set to false. If you redeploy an updated WAR file, be sure to delete the expanded directory when restarting Tomcat, so that the updated WAR file will be re-expanded (note that the auto deployer will automatically take care of this if it is enabled).
Any subdirectory within the application base directory that appears to be an unpacked web application (that is, it contains a /WEB-INF/web.xml file) will receive an automatically generated Context element, even if this directory is not mentioned in the conf/server.xml file. This generated Context entry will be configured according to the properties set in any DefaultContext element nested in this Host element. The context path for this deployed Context will be a slash character ("/") followed by the directory name, unless the directory name is ROOT, in which case the context path will be an empty string ("").
　　你也可以在这两个目录下创建其它xml的文件
　　但是这时你通过浏览器访问http://ycoe.vicp.net或http://yvor.vicp.net时并不能浏览到你的网页，因为它把这些网址解析到广域网上去了，除非你用域名绑定．
　　为了让局域本机不把这两个网址解析到广域网上去．我们可以通过以下设置实现（Windows XP，其它操作系统没有试过）：
　１．用文本编辑器打开C:/WINDOWS/system32/drivers/etc目录的hosts文件
　２．在内容最后另起一行，添加以下内容：
127.0.0.1 ycoe.vicp.net
127.0.0.1 yvor.vicp.net
　　可以由上面的注释部分了解它的作用：
　　
# Copyright © 1993-1999 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host
　　到这里，全部的配置已经完成了．重启Tomcat,打开http://ycoe.vicp.net或http://yvor.vicp.net就可以看到预期的效果了．呵呵
　　下载相关文件http://www.cnblogs.com/Files/ycoe/Catalina.rar