I am trying to make spring boot application & swagger. Application is for REST service provide. I have made application running each page.
I have made a simple controller that have RequestMapping("/group/user/contact").
Which is working fine.
I am trying to do something like RequestMapping("/group/{type}/contact") at class level.
So my question is that is it possible ?
If yes then just want some basic guidance. and if no then fine.
My all request working fine. All request came from CORS filter class.
You can do this, the handler method should look something like
#Controller
#RequestMapping("/group/{type}/contact")
public class ClassLevelPathVariableController {
#ResponseBody
#RequestMapping(method = RequestMethod.GET)
public String classLevelMapping(#PathVariable String type) {
return type;
}
}
In this setup a GET request like e.g. /group/test/contact would be handled by the classLevelMapping method and the type variable will be populated with the value "test"
Related
Hello I use Thymealf and want to do a validirung against my database before I subbmitte.
When I call the controller I get the error:
Error resolving template [], template might not exist or might not be accessible by any of the configured Template Resolvers
I think the error comes from the fact that I don't returne a modal.
Is there a way to make a request without thymleaf ?
Controller
#GetMapping("/getByKey/{key}")
public KeyValuePair keyExists(#PathVariable("key") String key){
return ssdbService.getByKey(key);
}
or do I understand here something completely wrong ?
Use a #RestController instead of a #Controller if you want to return data.
You can also just annotate your method with #ResponseBody if you just want one method to return data instead of the entire controller.
#ResponseBody
#GetMapping("/getByKey/{key}")
public KeyValuePair keyExists(#PathVariable("key") String key){
return ssdbService.getByKey(key);
}
I have a question about testing.
there is a controller with handler methods :
#Controller
#RequestMapping("/something")
public class MyController{
#RequestMapping(value = "/getSomething" , method = POST, produces = {JSON}, consumes = {JSON})
#ResponseBody
public MyClass2 getSomething(#RequestBody MyClass myObj) {
.........
}
}
Should I do any annotation's virification in my tests?
Like :
#Test
public void verityMethodGetSomethihg(){
//check that there is the POST method
//check that the method produces a JSON
//check that the method consumes a JSON
}
PS
Also , should do I check anywhere that there is method-handler a mapping for /getSomething?
Thanks
What you should do is up to you. If you consider it's a useful test to have, then do it. If you consider it's useless because, for example, you have an extensive functional test suite that tests your application, then don't.
Now how to do it? Spring MVC comes with a testing framework allowing to start a fake web application context, send a request to your app and test the result. It's extensively described in the documentation.
Below is my controller. My program generates an output, based on a form input. Across the project, there are multiple input forms, that generate the output object. So, the essential flow is the same. So I want a single multi-action controller that does all of that.
Challenges:
1. The service classes change. Although all services implement the same interface, and controller calls the same interface method.
2. The input objects change. Although the input objects do not have any methods other than setters, and getters. So I let them all implement an empty interface.
Questions:
How do I change the qualifier, based on the path. Can I use path variables?
Suppose the path has this value -> singleton. Then my corresponding bean names would be singletonService and singletonInput. I want to make a constant class that has stores this mapping information. So, can I call that from inside the qualifier, using some Spring Expression Language? Example, instead of Qualifier(variablePathName) -> Qualifier(getQualifierName['variablePathName']) Something like that?
Please also clarify the theory behind this. From what I understand, beans are created, autowired before the Request are mapped... Does this mean that what I'm trying to achieve here is simply not possible. In that case, would you suggest making Controller-service pairs for handling each request, with basically the same code? But I feel there must be some way to achieve what I'm trying...
Code:
#Cotroller
#RequestMapping(value="/generate/{path}")
public class TestController {
#Autowired
#Qualifier(......)
private IService service;
#Autowired
#Qualifier(......)
IUserInput userInput;
#RequestMapping(method = RequestMethod.POST)
//Some handler method
}
You're right in that the autowiring is all done once up front (point 3). You wouldn't be able to achieve what you want using fields annotated #Autowired and #Qualifier - as these fields would always reference the same bean instance.
You may be better to ask Spring for the particular service bean by name - based on the path variable. You could do it within a single controller instance. For example:
#Cotroller
#RequestMapping(value="/generate/{path}")
public class TestController {
#Autowired
private ApplicationContext applicationContext;
#RequestMapping(method = RequestMethod.POST)
public String someHandlerMethod(#PathVariable String path) {
IService service = (IService) applicationContext.getBean(path + "Service");
IUserInput userInput = (IUserInput) applicationContext.getBean(path + "UserInput");
// Logic using path specific IService and IUserInput
}
}
I am new to Web Technology. I have a WebService called Sample. It references a dll with name Custom.dll. My WebMethod is returning a class from Custom.dll which is marked as Serialization.
// My custom class
[System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "2.0.50727.3038")]
[SerializableAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(Namespace = "http://somthing-something.mydomain.com/")]
public class CustomClass
{
public string id;
public string key;
}
// My Web Service method
[WebMethod]
public CustomClass MyWsMethod()
{
return new CustomClass{id="id", key="Key"};
}
Also to mention, my webservice is a WCF Service and has a asmx file in it.
I am consuming this webservice in my application and service referenced my webservice as localhostWS. My Application also references Custom.dll. When I am calling my webservice method then I am not able to get back the Custom.CustomClass object. I am returning localhostWS.CustomClass and also I am not able cast it to Custom.CustomClass.
CustomClass custom = localhostWS.MyWsMethod();
Here custom object is of type localhostWS.CustomClass but I was expecting Custom.CustomClass.
Can any body suggest me whats happening here. Please let know if I need to provide any further information. I have tried enough to be clear in my question.
Edit
I must also mention this, it will great to achieve this without changing any Client side code. Due to reasons it will not be possible to change that. However any suggestions are welcome.
I have some questions from a design point of view in Spring Web MVC.
Is it good practice to use Request Object in controller? If not, then what is alternative way to pass pass one text fields value to controller? Do I need to create one new from bean for this single fields?
It depends of the situation, in a few cases I used the HttpServletRequest; for example for writing a file to the output stream.
If you want to get the Request Parameters you can use the annotation #RequestParam, that it´s more easy to get the parameters from the request.
Depends that you want to handle, for example for a form you can use #ModelAttribute and this attribute can be in a session or in the request.
For example:
#Controller
public class YourController {
#RequestMapping(value = "someUrl", method = RequestMethod.GET)
public String someMethod(#RequestParam("someProperty") String myProperty)
{
// ... do some stuff
}
}
Check the documentation here:
#RequestParam
#ModelAttribute
#PathVariable