CORS Error when uploading larger file (MultipartFile) in Spring Boot Web API
I have the below API to save MultipartFile. I am able to save files if the file size is below the defined limit.@PostMapping("/attachments") @Operation(summary = "save attachments") public...
View ArticleRedirect user to Java Servlet page that already performed action [closed]
I want to create a page that will redirect the user to another page (in this case a .do/java servlet) post search. For example:https://esvc.smlines.com/smline/CUP_HOM_3301.do, I need to redirect a user...
View ArticleHow can I set my servlet as default mapping in Tomcat embedded?
I want to set my servlet as default handler at "/" in my Tomcat embedded project but it always return a 404 error on navigator. But if I set an index.html in webapp it can return and I can access to...
View ArticleHow to know if the HttpServletRequest getParameter() method result is coming...
I'm working on a plain java project and I'm using Tomcat 10 as a dependency.What options do I have in java servlets to know if the getParameter() method result is coming from a query...
View ArticleHow to determine if a parameter has been "posted" or "geted" in servlet?
In ASP, there's request.form and request.queryString attributes, but in Java. It seems like we have only one collection, which can be accessed via request.getParamaterMap, getParametersNames,...
View ArticleHow to make a data to be displayed whenever the JSP page is opened and not...
I am trying to send partyList from AddPartyServlet.java to addParty.jsp. Whenever addParty.jsp is opened, the partyList isn't displayed readily and no records are seen. It just shows You have not added...
View ArticleChanging view (from MVC) using JSP and servlet
I'm attempting to write a web application using MVC. I have the bean, the JSP, and servlets.What I want to accomplish: the user will be able to create a (shopping) list in a table. The table will have...
View ArticleError connecting EventSource (Server-sent event) to server
I'm trying to connect a JavaScript EventSource to a Servlet. I have the following JavaScript code:var eventSource = new EventSource("notify?userId=123456");eventSource.onopen = function(e){...
View Articlehow to retrieve item from Cart
I am buliding an online bookstore with JSP and servlet which allow the user to view books and add to cart then process to checkout, but when I add an item to my cart and then I click on view cart it...
View ArticleFix "No primary or single unique constructor found for interface...
I want to build a Register and login module for my application and ran into the error in the title.My login.html<!DOCTYPE html><html lang="en"...
View Articlejava.lang.ClassNotFoundException: org.postgresql.Driver in HttpServlet...
There is a error that when I want to connect to postgresql database from a servlet connection it cause classnotfoundexception error for the postgresql driver. with some details about...
View ArticleHow to define servlet filter order of execution using annotations in WAR
If we define webapp specific servlet filters in WAR's own web.xml, then the order of execution of the filters will be the same as the order in which they are defined in the web.xml.But, if we define...
View ArticleJSP not showing data passed by JAVA Servlet
I am just a fellow newbie practicing Hibernate integration with JSP and Servlet. The problem arose when I tried to fetch data from the database.As usual I have the entity class with all the getters and...
View ArticleHow to put day month and year in single and double quotes when fetching from...
How to put day, month and year in single and double quotes when fetching from database in Java? String first1 = request.getParameter("from_date"); String Second2 = request.getParameter("to_date");...
View ArticleProblems with migration from WAS 6.1 to WAS 7.0 cookie is always null
I have this problem:I migrate my applications from WAS 6.1 to WAS 7.0 using migration tool in C:\Program Files\IBM\SDP\runtimes\base_v7\bin\migrationThe application was running just fine in 6.1 server,...
View ArticleNullPointerException When Making HTTP Calls with okhttp3
I am trying to make Http calls from a Soap service deployed as a war file on Glassfish 5.1.0 in a remote windows server. At the point of making Http calls to other Microservices from the soap service,...
View ArticleLogging response body (HTML) from HttpServletResponse using Spring MVC...
I am trying to log (just to console write now for simplicity sake) the final rendered HTML that will be returned by the HttpServletResponse. (i.e. the body) To this end, I am using the...
View ArticleHow to compile servlets from command prompt?
I'd like to compile a very basic servlet from command prompt, but it is always unsuccessful and the compiler tells me the following: error: package javax.servlet does not exist.I googled for the...
View ArticleGetting Servlet.init() Exception with Jersey on Tomcat due to NoSuchMethodError
I'm developing a RESTful web application using Jersey and deploying it on Tomcat 10. My application is hosted at http://localhost:8080/jrapi/. However, when I click on a link that should call the...
View Articlehow to limit post size in tomcat 8? How to make a custom reply for it?
I have this configured in my server.xml file:<Connector URIEncoding ="UTF-8" connectionTimeout ="20000" maxHttpHeaderSize ="65536" maxPostSize ="1024" port ="8080" protocol ="HTTP/1.1" redirectPort...
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