Java开发网 - [fwd] Apache2.0.44和Tomcat4.1.18通过JK2整合（使用JNI通道)

Topic: [fwd] Apache2.0.44和Tomcat4.1.18通过JK2整合（使用JNI通道)

1.[fwd] Apache2.0.44和Tomcat4.1.18通过JK2整合（使用JNI通道)

Posted by: micnet
Posted on: 2003-03-25 13:11

本文介绍的配置方法，用JK2连接Apache和Tomcat，连接使用JNI通道。并且启动Apache时，Apache会通过JNI直接在后台启动Tomcat，无须你再手工启动Tomcat。
我是参考Apache网站的资料，并在自己Win2K上配置成功。配置过程如下，希望对大家有用。
安装版本：
Apache 2.0.44
Tomcat 4.1.18
mod_jk2-2.0.43.dll
以上版本都可在WWW.APACHE.ORG下载

整合步骤
首先假定Apache2和Tomcat4已经安装完成，安装目录分别为：[Apache_install_dir]和[Tomcat_install_dir]。并且Apache的服务端口为80，Tomcat服务端口为8080。

一：在Apache2中安装mod_jk2-2.0.43.dll
将mod_jk2-2.0.43.dll拷贝到[Apache_install_dir]/modules目录中
编辑[Apache_install_dir]/conf/httpd.conf配置文件，在文件最后添加如下一行：
LoadModule jk2_module modules/mod_jk2-2.0.43.dll

二：配置Apache端
Apache端通过workers2.properties文件使用JK2。
在[Apache_install_dir]/conf目录中新建文件workers2.properties。（注意不要误建成workers2.properties.txt）
编辑该文件，添加如下内容：
# Define the comunication channel
[channel.jni:jni]
info=The jni channel, used if tomcat is started inprocess

# Define the parameters for the Java Virtual Machine
[vm:]
info=Parameters used to load a JVM in the server process
OPT=-Djava.class.path=[Tomcat_install_dir]/bin/tomcat-jni.jar;[Tomcat_install_dir]/bin/bootstrap.jar;[Tomcat_install_dir]/bin/commons-daemon.jar
OPT=-Dtomcat.home=[Tomcat_install_dir]
OPT=-Dcatalina.home=[Tomcat_install_dir]
OPT=-Xmx128M

# JNI worker startup handler
[worker.jni:onStartup]
info=Command to be executed by the VM on startup. This one will start tomcat.
class=org/apache/jk/apr/TomcatStarter
ARG=start
stdout=${serverRoot}/logs/stdout.log
stderr=${serverRoot}/logs/stderr.log

# JNI worker shutdown handler
[worker.jni:onShutdown]
info=Command to be executed by the VM on shutdown. This one will stop tomcat.
class=org/apache/jk/apr/TomcatStarter
ARG=stop

# Map the Tomcat examples webapp to the Web server uri space
[uri:/examples/*]
info=Map the whole webapp

注意：其中[Tomcat_install_dir]用你实际安装路径代替，[uri:/examples/*]用于映射Tomcat的examples Webapp，为了后面测试用。

三：配置Tomcat端
Tomcat端通过jk2.properties文件使用JK2。
在[Tomcat_install_dir]/conf目录中已经有jk2.properties文件，用如下内容覆盖原内容：

# Set the desired handler list
handler.list=apr,request,container,channelJni

# Enable jni use channelJni directive
apr.jniModeSo=D:\Apache Group\Apache2\modules\mod_jk2-2.0.43.dll

# If set to inprocess the mod_jk2 will Register natives itself
# This will enable the starting of the Tomcat from mod_jk2
# If you wish to start the Tomcat from inside web server then
# you don't need any above directive. Here is shown the default
# value for the apr that you can ommit
apr.jniModeSo=inprocess

四：测试
以上配置完毕后，整合就成功了。启动Apache。（不必手工启动Tomcat，Apache会自动在后台启动Tomcat，Tomcat的屏幕输出被重新定向到[Apache_install_dir]/logs/stdout.log和stderr.log中。
打开浏览器，访问 http://localhost/examples/
哈哈！成功了没有？

2.Re:[fwd] Apache2.0.44和Tomcat4.1.18通过JK2整合（使用JNI通道) [Re: micnet]

Copy to clipboard

Posted by: flytiger
Posted on: 2003-03-27 03:39

I need to add something to this article,

first. You need also configure the shared memory handling file (shm file) to make this working.

in workers2.properties add follow lines

# Shared memory handling. Needs to be set.
[shm]
file=${serverRoot}/logs/shm.file
size=1048576

in jk2.properties you don't need the following lines

# Enable jni use channelJni directive
apr.jniModeSo=D:\Apache Group\Apache2\modules\mod_jk2-2.0.43.dll

because you have

apr.jniModeSo=inprocess

at the end of jk2.properties, this will override the previous config in the same file.

just simply remove one of these lines.

Have fun.

3.Re:[fwd] Apache2.0.44和Tomcat4.1.18通过JK2整合（使用JNI通道) [Re: micnet]

Copy to clipboard

Posted by: why
Posted on: 2003-12-17 20:54

I got this error:
Apache2\log2\error.log:
[Wed Dec 17 08:46:06 2003] [error] Can't find class org/apache/jk/apr/AprImpl

If I start Tomcat manually, I got
17-Dec-2003 8:50:44 AM org.apache.jk.server.JkMain start
INFO: APR not loaded, disabling jni components: java.io.IOException: java.lang.UnsatisfiedLinkError: no jkjni in java.library.path

any clue?

BTW, I added [Tomcat_install_dir]/server/lib/commons-logging.jar to OPT=-Djava.class.path

4.Re:[fwd] Apache2.0.44和Tomcat4.1.18通过JK2整合（使用JNI通道) [Re: micnet]	Copy to clipboard
Posted by: why Posted on: 2003-12-18 09:08 4.1.18 seems to work with Apache/JK2-JNI until I put log4j into Tomcat/common/lib...

5.Re:[fwd] Apache2.0.44和Tomcat4.1.18通过JK2整合（使用JNI通道) [Re: micnet]

Copy to clipboard

Posted by: collins
Posted on: 2003-12-19 09:59

楼主的方法行不通，需要修改这一行：
OPT=-Djava.class.path=[Tomcat_install_dir]/bin/tomcat-jni.jar;[Tomcat_install_dir]/bin/bootstrap.jar;[Tomcat_install_dir]/bin/commons-daemon.jar
增加mx4j.jar，不然无法启动。

连接成功后，http://localhost:8080/examples/能打开实例页面，然而，一些例子运行会出现错误，说什么可能是JAVA_HOME的版本与JDK版本不对。察看注册表，原因可能是这样的，apache会自动找jre注册表中的版本，我装了JDK1.4,然后装了JB9，JB9的JDK是1.4.1。修改了半天把注册表，让PACHE适用1.4.2，与JAVA_HOME相同，但问题依旧。
没辙，很晚了，就放下了，哪位成功过？