I am learning Java servlets technology. In a bookt that I am reading, they have asked me to work in a notepad for time being. When i Create a servlet in eclipse, it just auto fills some content to that servlet class which I want to write on my own to learn stuff. For example, the doGet and doPost methods and their signatures. I want t...
http://stackoverflow.com/questions/1533662/testing-a-string-is-null I had this problem(see the link), where I was sure that a String is null, but in fact the String was "null" jcasso told me: Since you get the string from a servlet i can say that this is normal. Java converts a null string to a "null" string on some condit...
I am currently making a dvd browsing system using JSP / Java Servlets and am having trouble figuring out a way to make my login page a bit more efficient. My current login system does this: When a user submits the correct email/password combination, a servlet checks to see if the combination is correct and they are redirected to a lobby...
I have a single form with two submit buttons. Server side discovers proper intention by checking if submit button name is in the request parameters. Unfortunately I failed to test it with HttpUnit - looks like HttpUnit does not include the button name in the request parameters. I simulate the click by: dialog.clickButton(<button-id>) ...
The text area value I am trying to submit is around 400 chars and the value the servlet gets is null. When I limit this down to less that 75 chars the servlet will get the proper value. Has anyone seen this happen before? JSP <form action="/admin/homepageupdates"> <div class="body"> <textarea name="txtcontent" rows="7" cols="...
I am not able to get values from both files and text input in a servlet when my form includes multipart/form-data. I am using the apache.commons.fileuploads for help with the uploads. Any suggestions. Also in the code below there are some things that I feel should be more efficient. Is there a better way to store these multiple files in ...
Just looking at examples of connection pooling on the web, they all implement connection pooling on a per servlet basis. So each servlet has its own pool of database connections. My question is, why is that preferable to something like a global pool of db connections? Since a global pool is seems more efficient than a per servlet poo...
I often need to generate content dynamically from a servlet / restlet or whatever, and don't know the length ahead of time. If the client is a browser, the progress bar doesn't work properly, because I haven't set the Content-Length header. Is there any way of setting an estimated content length, so the progress bar works "more or less"?...
Hello - I'm unable to figure out what is going on here in this ultra simple example. Problem Summary: I have a simple servlet that appears to run just fine if I drive it manually... by issuing its URL from the browser. By 'just fine' I mean: I can see in the browser HTML page whatever I write in the servlet response. However, if I issu...
I am looking to sign a war file for distribution via Java Web Start. As I understand it, the jar signer tool ignores the contents of the META-INF directory so that the signing process does not change the digest value of the jar file. Will this same process work for a war file? I've never used a META-INF directory in the root of a war ...
I'm having a bit of a weird situation here. I have a form that submits using the GET method for a search function. On the subsequent page after a search, all the variables are displayed in the URL even if they are empty. For example if I make a search for movie title equaling "hello," I'll get this: /GetResults?title=hello&year=&directo...
Hello. I'll build a web application and I want to use url rewriting. In apache this is done with mod_rewrite. But how can I rewrite urls with Tomcat 6? I want to use Struts 2 framework. ...
I have two servlets 'ExtensionServlet' and 'PatternServlet' and a static html page. The HTML code is given below. <html> <head> <title> Resolve servlet ambiguity </title> </head> <body> <form action="servlets/form.col" method="POST"> <input type="submit" value="Goto Servlet"> </form> </bod...
Background A html page will ask the user to type their username and password. These are credentials for a MySQL database (i.e. they will be used in JDBC connection so that no password is physically stored in the files). On submit a servlet will be called which tries to connect to the database. If it can, the credentials are correct and...
I'm new to JSPs so bare with me. I have a JSP where I'm using a javascript framework to build a chart using the Google Visualization API. My servlet is returning a sales hashmap object with year as the key and integer (sales number) as the value. My javascript uses the sales object to add data to the Google chart API which builds my ch...
i want code to check whether the user in logged in or not. i want code for servlets. Thanks in advance ...
i really need help. I'm searching for this from a very long time. I would like to make a servlet (application deployed on OC4J ) which will allow to enter users logged in domain (Active Directory) without any prompt for login and password. Is it possible to retrive in servlet : user name via getRemoteUser or getUserPrincipal methods with...
I have an odd exception in our application and I'd like to log when it occurs and include the complete request string including the parameters. When I try log.warn("Weird request " + request.getRequestURL()); I get the request string but not the parameters which were included with ? and &. example: /testRequest.do?param1=1¶m2=...
I've written a Servlet that uses the library ganymed-ssh2-build210.jar (it uses these classes: import ch.ethz.ssh2.Connection; import ch.ethz.ssh2.Session; import ch.ethz.ssh2.StreamGobbler;) to run commands over an SSH connection (for test purposes it connects to my local machine). When I run my class as a standalone app it works, but ...
i really need help. I'm searching for this from a very long time. I would like to make a servlet (application deployed on OC4J ) which will allow to enter users logged in domain (Active Directory) without any prompt for login and password. Is it possible to retrive in servlet : user name via getRemoteUser or getUserPrincipal methods with...