It is very interesting for me but I have simple Spring MVC application and JSP page. At Jsp pages which are included I would like to add a cookie to my application. However despite of setting it, It could not resolved at runtime.
this is the code at my included jsp page.
<% response.addCookie(new Cookie("test3","test3")); %>
I prefer writing some of the parts of the our application at jsp level over writing at controller.
What I can just say is that I am using Tuckey UrlRewrite and at instead of my jsp pages when I call my method, it is working fine. And at my called method I can see that the inital response object at my MVC controller is wrapped by another HttpServletResponse object. It seems that headers and cookies could not be changed after forwarded to jsp?
Any help?
PS: I have updated my question to make it clear regarding it is jsp included page.
JSP is part of the response. You need to ensure that that line is exeucted before the response is been committed. Otherwise you end up with IllegalStateException: response already committed in the server logs. So put it in the very top of the JSP page, before any HTML is been sent to the response. Or, better, just put it in a Spring controller or a servlet or filter, far before the forward to JSP takes place.
You also need to ensure that you aren't altering the response inside a JSP file which is included by <jsp:include>. It will be plain ignored. See also the RequestDispatcher#include() javadoc:
The ServletResponse object has its path elements and parameters remain unchanged from the caller's. The included servlet cannot change the response status code or set headers; any attempt to make a change is ignored.
Related
I'm using Spring Boot and FreeMarker.
To render the header I need to put a dynamically created object in the model. Same to render the footer. I have a page.ftl that every other template includes so that every page have a header and a footer.
I want to render an 404 page which also shows this header and footer, so ideally the view of this page should be a free marker template.
I notice that if I have an error.ftl, Spring Boot would use it in case of an error, but where can I put logic that adds the header and footer so that my error page looks nice?
The answer was to create a #ControllerAdvice
Inside there is one method annotated with #ResponseStatus(HttpStatus.NOT_FOUND) and with #ExceptionHandler for the project's own PageNotFoundException. That method returns a ModelAndView object where I can put the name of whatever view I want to render (doesn't matter if it's FreeMarker or not). Inside the method I construct the header and footer.
The same can be done for a 500 page.
I have a 3rd party .jsp that I am trying to use in my SpringMVC 3.2 application.
the URL call looks like this:
http://localhost:8080/dms/pcc.jsp/Page/q/0/AttributescumentID=eJQAyAEYASgBJAFMAMgAlADIARgBsAG8AZwBvAC4AdABpAGYA0
I am getting a 404 error. How do I map this in my web.xml?
when I call
http://localhost:8080/dms/pcc.jsp
it works (well, no 404 errors) but I need to send it the parameters.
Changing the 3rd party jsp might be problematic, so how does one map this call straight to the jsp?
Thanks in advance.
Really a broad question. I would start with checking mapping in #Controller, then move into application-config.xml and then web.xml.
It would be nice if you would look at sample Spring Application.
If call to http://localhost:8080/dms/pcc.jsp works, you should try following thing.
http://localhost:8080/dms/pcc.jsp?AttributescumentID=eJQAyAEYASgBJAFMAMgAlADIARgBsAG8AZwBvAC4AdABpAGYA0&otherParams=something
The Page/q/0/ part in URL seems to be messing things up for you. If these also are parameters to be sent, send it the way explained above.
I want to use Spring MVC 3.0 to build interfaces for AJAX transactions. I want the results to be returned as JSON, but I don't necessarily want the web pages to be built with JSP. I only want requests to the controllers to be intercepted/routed through the DispatcherServlet and the rest of the project to continue to function like a regular Java webapp without Spring integration.
My thought was to define the servlet-mapping url pattern in web.xml as being something like "/controller/*", then have the class level #RequestMapping in my controller to be something like #RequestMapping("/controller/colors"), and finally at the method level, have #RequestMapping(value = "/controller/colors/{name}", method = RequestMethod.GET).
Only problem is, I'm not sure if I need to keep adding "/controller" in all of the RequestMappings and no matter what combo I try, I keep getting 404 requested resource not available errors.
The ultimate goal here is for me to be able to type in a web browser "http://localhost:8080/myproject/controller/colors/red" and get back the RGB value as a JSON string.
You are not correct about needing to add the entire path everywhere, the paths are cumulative-
If you have a servlet mapping of /controller/* for the Spring's DispatcherServlet, then any call to /controller/* will be handled now by the DispatcherServlet, you just have to take care of rest of the path info in your #RequestMapping, so your controller can be
#Controller
#RequestMapping("/colors")
public class MyController{
#RequestMapping("/{name}
public String myMappedMethod(#PathVariable("name") String name, ..){
}
}
So now, this method will be handled by the call to /controller/colors/blue etc.
I don't necessarily want the web pages to be built with JSP
Spring MVC offers many view template integration options, from passthrough to raw html to rich templating engines like Velocity and Freemarker. Perhaps one of those options will fit what you're looking for.
I want to display a custom 404 page not found error page (among others). I'm using Spring 3.0 and don't know how to do this.. I know I can specify a jsp page in web.xml to handle 404 errors. But I want Spring's environment for my error pages. So I tried simply returning a ModelAndView that's basically an error page. But the problem there is once I do this:
response.sendError(HttpServletResponse.SC_NOT_FOUND);
Then the whole request just gets forwarded back to the container's default 404 page. How are we supposed to handle error pages in Spring 3.0?
In Servlet 2.4, response.sendError() and response.setStatus() are treated differently. The former is handled by container, but the latter gives option to provide the response yourself. That means, you have to use response.setStatus(HttpServletResponse.SC_NOT_FOUND). Please also see How do I return a 403 Forbidden in Spring MVC?
I'm creating a Spring MVC application that will have a controller with 'RequestMapping'-annotated methods, including a JSON method. It currently has static content that resides in webapps/static, and the app itself resides in webapps/myapp. I assume that Catalina's default servlet is handling the static content, and my *.htm url-pattern in web.xml is returning the request for my JSP page, but I haven't been able to get the JSON method to be called. How do I write the url-pattern in the servlet mapping to do so? Using /* has not worked; it prevents the app from being accessed at all. Is there anything else to be aware of?
I've learned of the default url-pattern, '/', which appears to be a match for my JSON request.