Bryan Duggan
4th December 2002
This document explains how to set up Eclipse (a Java IDE) to edit, compile and run Java code (including JSP's). It also explains how to set up Eclipse to edit and debug servlets (generated from JSP's) and how to install and configure an optimal Tomcat and JDK environment. Note the Eclipse environment will work best on PC's with a minimum of 256Mb of RAM.
1. Uninstall all existing versions of the JDK and JRE. Go to Control panel, and add remover programs applet and look for things like \"Java 2 Runtime Environment...\" etc.
2. Uninstall old versions of Eclipse or JBuilder. To uninstall JBuilder, go to the add remove programs applet in the control panel. To uninstall Eclipse, delete the Eclipse directory.
3. Install the JDK 1.4 from the CD. The installer is called:
j2sdk-1_4_1-windows-i586.exe
Select the defaults when installing.
4. Set the JAVA_HOME and PATH environment variables to point to the JDK. To do this on Windows 2000, go the control panel, go to the System applet, go to the Advanced tab and press the Environment Variables button.
5. Click on the System variables list and either edit or add the variables
JAVA_HOME and PATH to point to the JDK. If you installed the JDK to C:\\j2sdk1.4.1, (the default), then make JAVA_HOME = C:\\j2sdk1.4.1
Add C:\\j2sdk1.4.1\\bin to the front of your PATH variable. You should remove any other references to previously installed JDK's from your path at this stage also. 6. Install Tomcat, by running jakarta-tomcat-4.1.12.exe. When you run this program, it will want to install to somewhere like:
C:\\Program Files\\Apache Group\\Tomcat 4.1
I suggest you change this to install to c:\\Tomcat for simplicity.
Also when installing you will be prompted to enter an administrator password for your Tomcat installation. I suggest you choose admin, admin for the user name and password.
7. Set the TOMCAT_HOME environment variable as described in steps 4 & 5 to point to your Tomcat folder. Set it to be c:\\Tomcat
8. Next you need to add some lines to your c:\\Tomcat\\Conf\\web.xml file to enable JSP debugging in Eclipse. Find the part of the file which reads:
And add the following lines in bold:
9. Test your JDK and Tomcat installation by running Tomcat and looking at the default web page in Integret Explorer. Start a command promt and navigate to C:\\Tomcat\\Bin. Run startup.bat. If everything has been installed correctly, you should should see a second DOS window open, like this one:
10. Check to make sure you can view pages in Tomcat by going to:
http://localhost:8080/index.jsp
in your web browser. You should be able to view the default page:
11. Shutdown Tomcat by running: shutdown.bat from the c:\\Tomcat\\Bin directory. 12. Install Eclipse by unzipping all the files in the ZIP file to your C:\\ Drive. This file contains paths, so just choose C:\\ when unzipping:
13. Next install the Tomcat plug-ins for Eclipse. First unzip the files in the zip file \\Eclipse Plugins\\jasperDebugPatchV4.1.12.zip to c:\\Tomcat\\common\\classes 14. Then unzip the file: \\Eclipse Plugins\omcatPluginV201.zip to c:\\Eclipse\\plugins 15. Now unzip the file: \\Eclipse Plugins\\net.sf.solareclipse_0.3.1.bin.dist.zip to c:\\Eclipse.
Be very careful about that you unzip these files to these exact locations specified above!!
16. Now start Eclipse...After a few seconds you should get the main Eclipse window:
17. If you get a message about new updates, choose yes when asked to open the update manager and check the option 4th December... and click finish and restart your environment:
18. You must now configure the Tomcat plugin for Eclipse. Go to Window |
Preferences | Tomcat. Click on Version 4.1.x and change Tomcat Home to point to c:\\Tomcat:
19. Now click on JVM settings and select jre1.4.1 as the JDK.
20. The Eclipse environment is organised around projects and perspectives. A
perspective defines the initial set and layout of windows in the environment. You can switch perspectives by clicking on the perspective toolbar on the left hand side.
21. Create a new project by going File | New | Project, select Java and then Tomcat Project. Give the project a name (MyTestProject) and choose a place to store the project or accept the default:
22. Press the next button and check the option \"Can update server.xml\".
23. Now press finish, to finish creating your project. Your project window will be updated to look like this:
24. Now create a new JSP by select MyTestProject, right click on the mouse button and choose New | File. Give the file the name Test1.jsp and click
25. Click on the newly created JSP file and put in some JSP code. For example:
26. Save your file.
27. To test your JSP, choose Tomcat | Start Tomcat. Your project will switch to the debug perspective.
28. Go to the URL http://localhost:8080/MyTestProject/Test1.jsp in your browser and you should get a web page with Hello world! on it.
29. To debug the servlet you must set a breakpoint in the generated Java file. Go to the work folder of your project and hit F5 to refresh the folder (switch back to the Resource Perspective first). Now find the generated file for your JSP and set a breakpoint on the line you want to debug by pressing Shift Crtl + B. It should be also possible to debug the JSP itself, but so far I havn't managed to get it working. 30. Any problems with the above, first do a search in http://groups.google.com or http://www.jguru.com.
31. The Eclipse environment comes with excellent tutorials and online help, which you should read. It will tell you how to set up packages, add files and add JAR's to the classpath etc. Also, there are many more useful eclipse plugins available on the web.
32. Good luck and happy programming!
因篇幅问题不能全部显示，请点此查看更多更全内容