I want to setup and Apache and Tomcat together and deploy my war file on the this setup. My question is how I separate my application for apache and tomcat ?Please give me example.
Thanks
Kumara
Generally I place static files as well as rewriting, AJP, and other customization filters at the Apache layer, pass through necessary URLs over to Tomcat and Servlet processing.
If you are completely contained in the .war and don't have a need for the features of a web server, Tomcat is perfectly happy serving HTTP directly.
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We have a java web application with gradle build configuration which contains 2 modules as below:
project-web.war -- contains all statc files, js, jsp, etc. Also it contains all the project, spring configuration with rest controller layer.
project-main.jar -- contains all the business & DAO layer logic.
Currently we are deploying both of these modules in Apache tomcat. Our project is going through with some architectural changes & one of the requirement is to add all the static content in Apache server so that static content can be served quickly.
I am beginner in regard to Apache http web server. I have below questions:
If I put all the static contents in Apache http server, then can I remove all the static contents from project-web? Can both of these project exist separately?
Going forward static content of project will be in Apache http web server and web app will be deployed in Apache tomcat, in addition both of these server will be in different VM machine. How web app in tomcat can access static content from Apache web server in different VM machine?(E.g. how jsp can point to images?)
Would it be fine idea to create a separate project for just static content as it will independent of web project in future and just need to be deployed in Apache http server?
Answers for above questions will be appreciable & other related suggestions are also welcome. Thanks!
1) If I put all the static contents in Apache http server, then can I remove all the static contents from project-web?
Yes.
Can both of these project exist separately?
They can, but the stuff in the webapp will (should) never be accessed so what would be the point?
2) Going forward static content of project will be in Apache http web server and web app will be deployed in Apache tomcat, in addition both of these server will be in different VM machine. How web app in tomcat can access static content from Apache web server in different VM machine?(E.g. how jsp can point to images?)
The webapp doesn't need to access the images. The browser needs to access the images. The Apache HTTPD configuration can be set up to take care of that transparently without requiring any JSP changes.
3) Would it be fine idea to create a separate project for just static content as it will independent of web project in future and just need to be deployed in Apache http server?
Yes.
I want to add a javascript based chat system to my web app. I have read in many places that apache needs to forward(proxy) the requests to the xmpp chat server.
From what I have understood , I either need to add proxying support to apache server
OR use the jabberHTTPbind servelet.
I am trying the first thing. Add proxy support to apache. Now within Eclipse I am using Tomcat 7.0. I think this Tomcat comes with its own web server and is not using Apache. Is that true ?I am using Tomcat from http://tomcat.apache.org/download-70.cgi and added server in Eclipse by providing its extracted path.
I am not able to find any apache related folder structure eg(/etc/apache2/apache2.conf) within my Tomcat extracted directory.Also can't find httpd.conf anywhere .
Should I need to download apache separately and connect my tomcat to it.
I think adding proxy support to apache is required because javascript code won't be able to connect to any URL other than the current domain. so the question again is the same , where are all these apache2.conf and httpd.conf to add mod_proxy. and where can I do the virtual host mapping.
Any help to move ahead with be very much appreciated.
You need to install the Apache HTTPD server and enable reverse proxying. Read the doc on mod_proxy on how to do this. There are tons of resources on Stackoverflow as well; search for Apache reverse Proxy. The conf files you mention are part of the Apache HTTPD install.
javascript code won't be able to connect to any URL other than the current domain
That is generally true unless you enable CORS
Since simply using Apache can be enough to run many Web applications, when and why do people also use Tomcat in addition to Apache?
Apache Tomcat is a webserver and Java servlet container in one, while Apache HTTPD is just a plain webserver (often with only PHP support). They use Apache Tomcat when they want be able to run Java/JSP/Servlet. It can be added to an existing Apache HTTPD / PHP setup. Or the other way round, they bring Apache HTTPD in front of Apache Tomcat to be able to have a "This site is in maintenance" page when Tomcat is been shutdown for some upgrade/maintenance.
For communication between Apache HTTPD and Apache Tomcat, the Tomcat Connector is usually been used. It's also known as mod_jk.
Maybe too late to answer.
"Apache" is the name of a foundation that write open-source software. Apache HTTPD is a web server written in portable C (when people say "Apache", they usually mean Apache HTTPD.) It mostly serves static content by itself, but there are many add-on modules (some of which come with Apache itself) that let it modify the content and also serve dynamic content written in Perl, PHP, Python, Ruby, or other languages.
Tomcat is primarily a servlet/JSP container. It's written in Java. It can serve static content, too, but its main purpose is to host servlets and JSPs. Although it's possible to get Tomcat to run Perl scripts and the like, you wouldn't use Tomcat unless most of your content was Java.
It's actually possible to use both Apache and Tomcat together, so that Apache serves the static content, and Tomcat the Servlets and JSPs. Depending on various factors, this may or may not be a good idea.
Please help! I got very frustrated with this assignment to demonstrate Apache and Java Struts. I cannot make struts apps run in the Apache web directory. They only work under Tomcat.
Can I use Struts only under Apache without Tomcat? ... Thanks very much!
Apache and Tomcat serve different purposes. You cannot use Apache to run Struts because it's just a web server, not a java web container.
What you could do is to setup Apache as a reverse proxy to a tomcat instance, so the "Internet" would talk to your Apache, but still Tomcat would be serving your requests in the end.
Recently our Software Analytic provider (NETTRACKER) sent us a plugin in order to be able to capture visitors in a better way. This plugin is for Apache 1.x and Apache 2.x. They said and I quote
that since Apache Tomcat is built on Apache HTTP server the configuration of the plugin should be the same.
I have looked for a httpd.conf in our tomcat deployment but we cannot find one, the only configuration that is similar to that one is the server.xml under the /conf directory.
If someone has better information regarding these two incredible products (Apache HTTP server and Apache Tomcat) I will greatly appreciate to draw the differences.
EDIT:
In case you are curious we know that Apache Web Server and Tomcat can work together using the mod_jk option and other proxys. But this will be too complex for our deployment.
Apache Tomcat and Apache HTTP are completely different server technologies. It is impossible to use a plugin for Apache HTTP server with Tomcat.
Apache HTTP server is developed in C and so are the plug-ins. On the contrary Tomcat is now completely developed in Java. Tomcat doesn't only serve static content, but it can also serve JSP pages and servlets.
Tomcat is used for hosting Java Web Applications. It can sure serve static content - you can host a web application using only Tomcat. Secure connections are supported and the performance is also very good (comparable with the performance of HTTP server).
A plain installation of Apache serves static content. Using the appropriate plug-ins, HTTP requests can be redirected to an application server (Tomcat, JBoss, Glassfish) or a script language interpreter (PHP). With this way dynamic content can be generated. The big advantages of Apache are the numerous plug-ins available, which allows administrators to configure and monitor web sites any way they want and that is the most widespread server available. This makes it the most secure solution, since it is thoroughly tested and any discovered flaw is corrected very quickly.
The best solution would be to use Tomcat proxied by an Apache server. It isn't so difficult to set up. If you can't do this, then you can't take advantage of Apache's plug-ins.
You see this confusion all the time. Many people think that Apache is a web server where in reality it is the name of an organization that has a web server project called "The Apache HTTP Server Project". In short the web server is called HTTPD (D as in daemon or Unix process).
Tomcat is another Apache project. This project implements a Java servlet engine to serve JSP pages and servlets. Tomcat and HTTPD have nothing to do with each other. However, you can set up HTTPD and Tomcat so that they work together. This way you can have HTTPD serve all static content, do URL rewriting and much more fancy stuff that the built in Tomcat web server can't do (or can't do very well). Whenever a JSP page is requested, HTTPD will pass the request on to Tomcat. Tomcat will process the request and will hand the output back to HTTPD which in turn will send it to the client.
Apache has many interesting projects. E.g. there is also a project called Geronimo which is a Java Enterprise server (J2EE). You can e.g. choose to embed Tomcat inside Geronimo to handle requests for JSP's and servlets where Geronimo does the more enterprisy stuff (LDAP, Messaging etc.). And you guessed it probably already, you can use HTTPD as a static content server for Geronimo as well.
totally bogus. Apache httpd plugins are written in C, Tomcat is pure Java.
Tomcat is a Java servlet engine. It can be hosted under Apache or IIS or quite a number of other external facing web servers. It sounds like you may be currently running your Tomcat instance standalone...
If you serve the JSP/servlets off of port 8080 and have it do things standalone, on the same host machine that Apache is running on, this can allow you to have them loosely coupled. Having multiple web servers fielding independent requests is not recommended, especially if you want to use server-based authentication along with Apache. Typically, you have one outside facing server that shepherds everything through it... Apache does this quite well, and the plugin you mention probably relies on this type of setup (everything gets wired through Apache) for its features/capabilities, based on your brief description of it.
If you would like to serve up your Tomcat servlets under Apache, you could configure apache to forward a class of URIs to your tomcat server instances. you could achieve this type of forwarding through mod_rewrite. this is a slower option performance-wise, as it adds slight overhead on everything you server up. You could also proxy incoming requests via a CGI mechanism similarly, from Apache to Tomcat.
mod_jk will simplify deployment and increase performance for placing Tomcat into an Apache server config. It is pretty painless to configure if you follow the docs, so I am not sure what you mean by "too complex" for your deployment -- if you want Apache and have Tomcat already, it would seem only a matter of slight config changes to get mod_jk downloaded and installed.