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Java Forum / General / August 2007source for servlet-api.jar
My project uses servlet-api.jar. When debugging, I wanted to step into its classes (such as HttpServlet) but I got "Source code not available". I found what I thought was the source at https://sdlc4e.sun.com/ECom/EComActionServlet/DownloadPage:~:com.sun.sunit.sdlc. content.DownloadPageInfo;jsessionid=4582C4DED0562E245D9FE010014C316A;jsessionid= 4582C4DED0562E245D9FE010014C316A?DirOpen=ESD8%2Fcommsrc%2Fj2eeri%2F1.4.1&fileDir ectoryHrefId_20=&LineItem=0 However, when I did "Attach Source" from the debugger, i found that the source line numbers did not actually correspond to what's in my version of servlet-api.jar. I tried adding the relevant source code directory to my project, but that messed me up somehow... I get a ClassNotFound error on a class that's in my own project. Help! How do I step through servlet-api.jar ? > My project uses servlet-api.jar. When debugging, I wanted to step > into its classes (such as HttpServlet) but I got "Source code not [quoted text clipped - 7 lines] > > Help! How do I step through servlet-api.jar ? servlet-api is implemented by your J2EE application container, so it depends on which one you are using. If your using resin, look at there website, if you're using JBoss, look there, etc... > > My project uses servlet-api.jar. When debugging, I wanted to step > > into its classes (such as HttpServlet) but I got "Source code not [quoted text clipped - 11 lines] > depends on which one you are using. If your using resin, look at > there website, if you're using JBoss, look there, etc... I'm using WebSphere... is that the container? > > > My project uses servlet-api.jar. When debugging, I wanted to step > > > into its classes (such as HttpServlet) but I got "Source code not [quoted text clipped - 15 lines] > > - Show quoted text - Yes, it would be the container. Also, unless you're running websphere in-process with the debugger or doing remote debugging, you may not be able to dive deep into container API. -cheers, Manish > > > > My project uses servlet-api.jar. When debugging, I wanted to step > > > > into its classes (such as HttpServlet) but I got "Source code not [quoted text clipped - 22 lines] > -cheers, > Manish OK, but where do I get the correct source code, and what do I do with it? > > > > > My project uses servlet-api.jar. When debugging, I wanted to step > > > > > into its classes (such as HttpServlet) but I got "Source code not [quoted text clipped - 27 lines] > > - Show quoted text - Not sure about Websphere - I doubt its code is available. If it were Tomcat, you can just download the source and attach the source path in eclipse. -cheers, Manish > > > > > My project uses servlet-api.jar. When debugging, I wanted to step > > > > > into its classes (such as HttpServlet) but I got "Source code not [quoted text clipped - 25 lines] > OK, but where do I get the correct source code, and what do I do with > it? The real question is, are you sure you need to go into it? Perhaps there is a way for you to debug your program without knowing the containers source-code. > > > > > > My project uses servlet-api.jar. When debugging, I wanted to step > > > > > > into its classes (such as HttpServlet) but I got "Source code not [quoted text clipped - 29 lines] > there is a way for you to debug your program without knowing the > containers source-code. FYI... what I ended up doing is downloading the Java Decompiler (JAD) and running jad -sjava -lnc -nonlb HttpServlet.class The "lnc" switch puts the line numbers from the original source as comments in the output source code. However, the debugger doesn't know anything about these comments (or at least I don't know how to get it to take advantage of that), so I ended up writing a Perl script to rewrite the output from JAD to actually put each line on the same physical line number that it was in the original source (by putting in the right amount of blank lines), and that worked in the debugger. (A cleaner method would be to go into the class file and renumber the source lines, but I don't know enough about the format of the class file to do that) >Help! How do I step through servlet-api.jar ? If you can't get it, you might be able to synthesize it by decompiling and recompiling. see http://mindprod.com/jgloss/decompiler.html It would probably take a lot of tweaking though.  SignatureRoedy Green Canadian Mind Products The Java Glossary http://mindprod.com On Aug 22, 4:34 am, Roedy Green <see_webs...@mindprod.com.invalid> wrote: > >Help! How do I step through servlet-api.jar ? > [quoted text clipped - 5 lines] > Roedy Green Canadian Mind Products > The Java Glossaryhttp://mindprod.com Thanks for the idea! I decompiled with jReversePro, but the line numbers of the decompiled code apparently do not match up with the line numbers in the .class file, because when I step through in the debugger, it doesn't make sense. To solve this, I thought of recompiling the decompiled .java files back to new .class files, but they won't compile. How can I solve the line number problem? Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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