爱华网安装好JDK后，再配置JDK的环境变量：
在“我的电脑”上点右键—>“属性”—>“高级”—> “环境变量(N)”。
新建系统变量JAVA_HOME：C:/Program Files/Java/jdk1.5.0_06；
新建系统变量CLASSPATH：.;%JAVA_HOME%/lib;（注意：点号表示当前目录，不能省略）
在系统变量Path的值的前面加入以下内容：%JAVA_HOME%/bin;(注意:这里的分号不能省略)
到这里，JDK安装完毕。
2.安装Tomcat
安装好Tomcat后，再配置Tomcat的环境变量：
在“我的电脑”上点右键—>“属性”—>“高级”—> “环境变量(N)”。
新建系统变量CATALINA_HOME：D:/jakarta-tomcat-5.0.30
在系统变量CLASSPATH的值的后面加入：%CATALINA_HOME%/common/lib;
在系统变量Path的值中"%JAVA_HOME%/bin;"的后面加入以下内容：%CATALINA_HOME%/bin;
到这里，Tomcat安装完毕。
配置好以上环境变量之后，各系统变量的值如下：
JAVA_HOME:C:/Program Files/Java/jdk1.5.0_06
CATALINA_HOME:D:/jakarta-tomcat-5.0.30
CLASSPATH:.;%JAVA_HOME%/lib;%CATALINA_HOME%/common/lib;
Path:%JAVA_HOME%/bin;%CATALINA_HOME%/bin;%SystemRoot%/system32;%SystemRoot%;%
SystemRoot%/System32/Wbem
------------------------------------------------------------------------
测试JDK和Tomcat
打开cmd进行测试JDK是否配置成功：
Microsoft Windows XP [版本 5.1.2600]
(C) 版权所有 1985-2001 Microsoft Corp.
C:/Documents and Settings/Administrator>java
Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
(to execute a jar file)
where options include:
-client to select the "client" VM
-server to select the "server" VM
-hotspot is a synonym for the "client" VM [deprecated]
The default VM is client.
-cp <class search path of directories and zip/jar files>
-classpath <class search path of directories and zip/jar files>
A ; separated list of directories, JAR archives,
and ZIP archives to search for class files.
-D<name>=<value>
set a system property
-verbose[:class|gc|jni]
enable verbose output
-version print product version and exit
-version:<value>
require the specified version to run
-showversion print product version and continue
-jre-restrict-search | -jre-no-restrict-search
include/exclude user private JREs in the version search
-? -help print this help message
-X print help on non-standard options
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
enable assertions
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
disable assertions
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions
-agentlib:<libname>[=<options>]
load native agent library <libname>, e.g. -agentlib:hprof
see also, -agentlib:jdwp=help and -agentlib:hprof=help
-agentpath:<pathname>[=<options>]
load native agent library by full pathname
-javaagent:<jarpath>[=<options>]
load Java programming language agent, see java.lang.instrument
-splash:<imagepath>
show splash screen with specified image
C:/Documents and Settings/Administrator>javac --输入javac显示下面的内容就是配置成功
用法：javac <选项> <源文件>
其中，可能的选项包括：
-g 生成所有调试信息
-g:none 不生成任何调试信息
-g:{lines,vars,source} 只生成某些调试信息
-nowarn 不生成任何警告
-verbose 输出有关编译器正在执行的操作的消息
-deprecation 输出使用已过时的 API 的源位置
-classpath <路径> 指定查找用户类文件和注释处理程序的位置
-cp <路径> 指定查找用户类文件和注释处理程序的位置
-sourcepath <路径> 指定查找输入源文件的位置
-bootclasspath <路径> 覆盖引导类文件的位置
-extdirs <目录> 覆盖安装的扩展目录的位置
-endorseddirs <目录> 覆盖签名的标准路径的位置
-proc:{none,only} 控制是否执行注释处理和/或编译。
-processor <class1>[,<class2>,<class3>...]要运行的注释处理程序的名称；绕过默认
的搜索进程
-processorpath <路径> 指定查找注释处理程序的位置
-d <目录> 指定存放生成的类文件的位置
-s <目录> 指定存放生成的源文件的位置
-implicit:{none,class} 指定是否为隐式引用文件生成类文件
-encoding <编码> 指定源文件使用的字符编码
-source <版本> 提供与指定版本的源兼容性
-target <版本> 生成特定 VM 版本的类文件
-version 版本信息
-help 输出标准选项的提要
-Akey[=value] 传递给注释处理程序的选项
-X 输出非标准选项的提要
-J<标志> 直接将 <标志> 传递给运行时系统
C:/Documents and Settings/Administrator>
测试Tomcat是否配置成功：
进入Tomcat目录下的bin里面
双击startup.bat
如果显示下列信息就配置成功
2008-7-30 21:27:34 org.apache.coyote.http11.Http11Protocol init
严重: Error initializing endpoint
java.net.BindException: Address already in use: JVM_Bind:8080
at org.apache.tomcat.util.net.PoolTcpEndpoint.initEndpoint(PoolTcpEndpoi
nt.java:297)
at org.apache.coyote.http11.Http11Protocol.init(Http11Protocol.java:142)
at org.apache.catalina.connector.Connector.initialize(Connector.java:918
)
at org.apache.catalina.core.StandardService.initialize(StandardService.j
ava:580)
at org.apache.catalina.core.StandardServer.initialize(StandardServer.jav
a:764)
at org.apache.catalina.startup.Catalina.load(Catalina.java:490)
at org.apache.catalina.startup.Catalina.load(Catalina.java:509)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:243)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:408)
2008-7-30 21:27:34 org.apache.catalina.startup.Catalina load
严重: Catalina.start
LifecycleException: Protocol handler initialization failed: java.net.BindExcept
ion: Address already in use: JVM_Bind:8080
at org.apache.catalina.connector.Connector.initialize(Connector.java:920
)
at org.apache.catalina.core.StandardService.initialize(StandardService.j
ava:580)
at org.apache.catalina.core.StandardServer.initialize(StandardServer.jav
a:764)
at org.apache.catalina.startup.Catalina.load(Catalina.java:490)
at org.apache.catalina.startup.Catalina.load(Catalina.java:509)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:243)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:408)
2008-7-30 21:27:34 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 625 ms
2008-7-30 21:27:34 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2008-7-30 21:27:34 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/5.5.7
2008-7-30 21:27:34 org.apache.catalina.core.StandardHost start
信息: XML validation disabled
2008-7-30 21:27:34 org.apache.catalina.core.ApplicationContext log
信息: org.apache.webapp.balancer.BalancerFilter: init(): ruleChain: [org.apache.
webapp.balancer.RuleChain: [org.apache.webapp.balancer.rules.URLStringMatchRule:
Target string: News / Redirect URL: http://www.cnn.com], [org.apache.webapp.bal
ancer.rules.RequestParameterRule: Target param name: paramName / Target param va
lue: paramValue / Redirect URL: http://www.yahoo.com], [org.apache.webapp.balanc
er.rules.AcceptEverythingRule: Redirect URL: http://jakarta.apache.org]]
log4j:WARN No appenders could be found for logger (org.apache.catalina.session.M
anagerBase).
log4j:WARN Please initialize the log4j system properly.
2008-7-30 21:27:35 org.apache.catalina.core.ApplicationContext log
信息: ContextListener: contextInitialized()
2008-7-30 21:27:35 org.apache.catalina.core.ApplicationContext log
信息: SessionListener: contextInitialized()
log4j:WARN No appenders could be found for logger (org.apache.catalina.session.M
anagerBase).
log4j:WARN Please initialize the log4j system properly.
2008-7-30 21:27:37 org.apache.struts.util.PropertyMessageResources <init>
信息: Initializing, config='org.apache.struts.util.LocalStrings', returnNull=tru
e
2008-7-30 21:27:37 org.apache.struts.util.PropertyMessageResources <init>
信息: Initializing, config='org.apache.struts.action.ActionResources', returnNul
l=true
2008-7-30 21:27:38 org.apache.struts.util.PropertyMessageResources <init>
信息: Initializing, config='com.yourcompany.struts.ApplicationResources', return
Null=true
2008-7-30 21:27:39 org.apache.catalina.core.ApplicationContext log
信息: ContextListener: contextInitialized()
2008-7-30 21:27:39 org.apache.catalina.core.ApplicationContext log
信息: SessionListener: contextInitialized()
log4j:WARN No appenders could be found for logger (org.apache.catalina.session.M
anagerBase).
log4j:WARN Please initialize the log4j system properly.
2008-7-30 21:27:43 org.apache.coyote.http11.Http11Protocol start
严重: Error starting endpoint
java.net.BindException: Address already in use: JVM_Bind:8080
at org.apache.tomcat.util.net.PoolTcpEndpoint.initEndpoint(PoolTcpEndpoi
nt.java:297)
at org.apache.tomcat.util.net.PoolTcpEndpoint.startEndpoint(PoolTcpEndpo
int.java:312)
at org.apache.coyote.http11.Http11Protocol.start(Http11Protocol.java:181
)
at org.apache.catalina.connector.Connector.start(Connector.java:990)
at org.apache.catalina.core.StandardService.start(StandardService.java:4
59)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:683
)
at org.apache.catalina.startup.Catalina.start(Catalina.java:537)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:271)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:409)
2008-7-30 21:27:43 org.apache.catalina.startup.Catalina start
严重: Catalina.start:
LifecycleException: Protocol handler start failed: java.net.BindException: Addr
ess already in use: JVM_Bind:8080
at org.apache.catalina.connector.Connector.start(Connector.java:992)
at org.apache.catalina.core.StandardService.start(StandardService.java:4
59)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:683
)
at org.apache.catalina.startup.Catalina.start(Catalina.java:537)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:271)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:409)
2008-7-30 21:27:43 org.apache.catalina.startup.Catalina start
信息: Server startup in 9188 ms
