I couldn't understand why the following gives an ambiguous mapping.
a. The controller class
#Controller
#RequestMapping("/employees")
public class EmployeeController {
#Autowired
private EmployeeService employeeService;
#RequestMapping(value = "/new", method = RequestMethod.GET)
public String get(Model model) {
return "xx";
}
}
Console output:
java.lang.IllegalStateException: Ambiguous mapping found. Cannot map 'org.tutorial.spring.controller.EmployeeController#0' bean method
public java.lang.String org.tutorial.spring.controller.EmployeeController.get(org.springframework.ui.Model)
to {[/employees/new],methods=[GET],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'employeeController' bean method
public java.lang.String org.tutorial.spring.controller.EmployeeController.get(org.springframework.ui.Model) mapped.
It says method has already been mapped.
How so?
b. web.xml
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
c. spring.xml
<context:annotation-config />
<context:component-scan base-package="org.tutorial.spring" />
<mvc:annotation-driven />
<bean class="org.tutorial.spring.controller.EmployeeController" />
Try removing the bean element
<bean class="org.tutorial.spring.controller.EmployeeController" />
from your XML. I suspect this is causing you problems because
<context:component-scan base-package="org.tutorial.spring" />
will scan your package, and identify EmployeeController as a bean, due to its annotations. Then, afterwards, you are manually adding the same bean.
Related
I tried couple of Tutorial in Spring-MVC to load the data in index page without using ajax call means before loading the index page I want to get the data from server and load the data into the index page.but did not get proper answer.
Finally after couple of try i got the answer.here is my code.
web.xml
<display-name>SpringTest</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class> org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-servlet.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
My Controller
#Controller
public class WebController {
#Autowired
private EmployeeService empService;
#RequestMapping(value = "/", method = RequestMethod.GET)
public ModelAndView index() {
List<Employee> empList = empService.getAllEmployee();
Collections.sort(empList, new EmployeeSortById());
ModelAndView modelMap = new ModelAndView("index","employeeList", empList);
System.out.println("Calling controller");
return modelMap;
}
}
spring-context.xml
<context:component-scan base-package="com.app.controller,com.app.dao.impl,com.app.service.impl" />
<mvc:annotation-driven/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/" />
<property name="suffix" value=".jsp" />
</bean>
I have two controllers:
UserController and AdminController.
The AdminController is handling all requests that have not created. Also handle the request to access to my resources.
Also I'm using spring-security and maven to compile all.
Examples:
Request: .../appName/login --> return login view.
Request: .../appName/home --> return home view.
Request: .../appName/fahsjhgasghdjfg --> return admin view.
Request: .../appName/dasjdha/fhfashjfs --> return admin view.
Request: .../appName/resources/css/one.css --> return admin view.
If I remove the AdminController and create a new controller with name ExamplefasjkasController it happens the same.
Code:
Controllers:
#Controller
public class AdminController {
#RequestMapping(name = "/panel")
public ModelAndView adminPanel() {
return new ModelAndView("admin");
}
}
#Controller
public class UserController extends GenericController {
#Autowired
private IUserService userService;
#RequestMapping(value = { "/", "/home" })
public ModelAndView home(HttpServletRequest request, Principal principal) {
ModelAndView model = new ModelAndView(Name.VIEW_HOME);
model.setViewName(Name.VIEW_HOME);
return model;
}
#RequestMapping(value = "/login", method = RequestMethod.GET)
public ModelAndView login(HttpServletRequest request,
#RequestParam(value = Name.PARAM_ERROR, required = false) String error,
#RequestParam(value = Name.PARAM_LOGOUT, required = false) String logout) {
ModelAndView model = new ModelAndView();
model.setViewName(Name.VIEW_LOGIN);
if (error != null) {
addError(model, getErrorMessage(request, "SPRING_SECURITY_LAST_EXCEPTION"));
}
if (logout != null) {
addInfo(model, Message.INFO_USER_LOGOUT);
}
return model;
}
}
In the AdminController I try to get Request with
#Controller
#RequestMapping(name = "/admin"}
public class AdminController {
#RequestMapping(name = "/panel")
...
}
But I get an exception:
javax.servlet.ServletException: No adapter for handler [com.base.controller.AdminController#3f114da7]: The DispatcherServlet configuration needs to include a HandlerAdapter that supports this handler
XMLs:
web.xml
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring/spring-mvc-dispatcher.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring/spring-database.xml,
/WEB-INF/spring/spring-security.xml
</param-value>
</context-param>
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
spring-mvc-dispatcher.xml
<mvc:resources mapping="/web_resources/bower_components/**" location="classpath:/web_resources/bower_components/" />
<mvc:resources mapping="/web_resources/layouts/**" location="classpath:/web_resources/layouts/" />
<mvc:resources mapping="/web_resources/elements/**" location="classpath:/web_resources/elements/" />
<context:component-scan base-package="com.base.*" />
<mvc:annotation-driven />
<context:annotation-config />
<import resource="spring-messages.xml" />
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/views/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
I could share the entire application if someone request.
Thanks in advance and best regards.
You have to fix your request mapping as below:
#Controller
#RequestMapping(value = "/admin"}
public class AdminController {
#RequestMapping(value = "/panel")
...
}
I am trying to integrate jersey to an existing Spring application (Spring 2.5.5).
Jersey is working fine, but however when I AutoWire an existing spring bean, the object is null.
Below is my web.xml
<servlet>
<servlet-name>fs3web</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>jersey-servlet</servlet-name>
<servlet-class>com.sun.jersey.spi.spring.container.servlet.SpringServlet</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>com.fl.fs3.api;org.codehaus.jackson.jaxrs</param-value>
</init-param>
<init-param>
<param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>fs3web</servlet-name>
<url-pattern>/fs3/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>jersey-servlet</servlet-name>
<url-pattern>/api/*</url-pattern>
</servlet-mapping>
And, here my application context xml (obviously this is not complete, since this is a huge application, there is much more bean definitions):
TestPojo is my bean I would like to autowire to my jersey resource.
<context:annotation-config />
<aop:aspectj-autoproxy/>
<context:component-scan base-package="com.fl.fs3.api,com.fl.fs3.integration.*.web"/>
Both my jersey resource class and POJO class is in package com.fl.fs3.api
#Component
#Path("/v1/site")
public class SitesApiControllerV1 {
#Autowired TestPojo testPojo;
#GET
#Path("/{folderName}")
#Produces(MediaType.APPLICATION_JSON)
public Response getSite(#PathParam("folderName") String folderName) {
System.out.println("pojo obj:" + testPojo);
return Response.ok("info for " + folderName).build();
}
}
#Component
public class TestPojo {
}
When I start my tomcat, I do not see the expected line in logs:
INFO: Registering Spring bean, hello, of type ..... as a root resource class
When I invoke my service /v1/site/xyz, testPojo object is null.
However, before integrating this to my existing project, I did a sample jersey+spring application, and it worked perfectly. I was able to see 'Registering Spring bean' line in logs.
Any help is appreciated.
Try this, it may be more simplified:
Load spring through web.xml like shown below as normal spring confifuration:
<servlet>
<servlet-name>project-spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:project-spring-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>project-spring</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
Now load your jersey Resources through Application as shown below:
#ApplicationPath("/rest")
public class ResourceLoader extends Application
{
/* (non-Javadoc)
* #see javax.ws.rs.core.Application#getClasses()
*/
#Override
public Set<Class<?>> getClasses()
{
Set<Class<?>> classes = new HashSet<Class<?>>();
loadResourceClasses(classes);
return classes;
}
private void loadResourceClasses(Set<Class<?>> classes)
{
classes.add(StudentResource.class);
}
}
Then in your resource:
#Path("student")
class StudentResource
{
private StudentService studentService;
StudentResource(#Context ServletContext servletContext)
{
ApplicationContext applicationContext = WebApplicationContextUtils.getWebApplicationContext(servletContext);
this.transactionService = applicationContext.getBean(StudentService .class);
}
}
There you go.
Spring has been configured with all dependency injections with Jersey!
I'm using Spring 3.1.1.RELEASE. I'm having fits mapping URLs to controller methods. I would like to map the URL "/my-context-path/organizations/add" to the controller method below. In my controller, I have
#Controller
#RequestMapping("/organizations")
public class OrganizationController
{
…
#RequestMapping(value = "/add", method = RequestMethod.GET)
public ModelAndView doGetadd()
{
… do some stuff …
return new ModelAndView("organizations/add");
} // doGetadd
In my web.xml I have
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<display-name>SB Admin</display-name>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/organizations/*</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/dispatcher-servlet.xml</param-value>
</context-param>
and in my dispathcer-servlet.xml I have
...
<!-- Enable annotation driven controllers, validation etc... -->
<mvc:annotation-driven />
<context:component-scan base-package="org.myco.subco" />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/views/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
but requests for my desired context-path result in "No mapping found for HTTP request with URI [/myproject-1.0-SNAPSHOT/organizations/add] in DispatcherServlet with name 'dispatcher" errors (using JBoss 7). How do I map this thing properly? Note that I have multiple methods in my controller that I want to different URLs within the "/organizations" space.
Try this.
Change the dispatcher servlet mapping to :
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
And for the OrganizationController the mapping would be
#Controller
#RequestMapping("/organizations")
public class OrganizationController
And for the ContractsController the mapping would be
#Controller
#RequestMapping("/contracts")
public class OrganizationController
According to the Spring Doc the ModelAndView constructor parameter is the name of the view file.
So that file could be addView.jsp .
As well as the fact that you're (as far as my Spring knowledge goes) actually mapping it to /Application-Name/organizations/organizations/add due to :
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/organizations/</url-pattern>
</servlet-mapping>
And
#Controller
#RequestMapping("/organizations")
public class OrganizationController
I'd recommend changing the requestmapping from the controller to
#Controller
#RequestMapping("/")
public class OrganizationController
The <url-pattern>/organizations/</url-pattern> basiccally defines the 'virtual path' on which your site will be accessible.
Al mappings you do on controllers will append to it, makeing it /organizations/whateverpagecomeshere.jsp
And make sure that View file exists !
I get this error with a gwt (using requestfactory) and spring
org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [org.calibra.server.service.AccountService] is defined: expected single bean but found 0:
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:271)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1101)
at org.calibra.server.SpringServiceLocator.getInstance(SpringServiceLocator.java:24)
at com.google.web.bindery.requestfactory.server.LocatorServiceLayer.createServiceInstance(LocatorServiceLayer.java:56)
My service locator
public class SpringServiceLocator implements ServiceLocator {
#Override
public Object getInstance(Class<?> clazz) {
ApplicationContext context = WebApplicationContextUtils.getWebApplicationContext(
RequestFactoryServlet.getThreadLocalServletContext());
return context.getBean(clazz);
}
}
My spring service
#Service
public class AccountServiceImpl implements AccountService{
#Override
public void addNewAccount(Account account) {
...
}
#Override
public List<Account> loadAllAccounts() {
...
}
}
Gwt requestContext, reference my spring service
#Service(value=AccountService.class, locator=SpringServiceLocator.class)
public interface AccountRequest extends RequestContext {
Request<Void> addNewAccount(AccountProxy account);
Request<List<AccountProxy>> loadAllAccounts();
}
my web.xml
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>gwtRequest</servlet-name>
<servlet-class>com.google.web.bindery.requestfactory.server.RequestFactoryServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>gwtRequest</servlet-name>
<url-pattern>/gwtRequest</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>welcomeGWT.html</welcome-file>
</welcome-file-list>
I don't understand how i can have 0 AccountService beans ?
i tried to add in the dispatcher-servlet
<bean id="accountService" class="org.calibra.server.service.AccountServiceImpl"/>
I got the same result
Any idea?
edit: if somebody have a full complete example, that could be useful.
I think using the ContextLoaderListener alone is not enough as you don't seem to have the DispatcherServlet in use (have you?).
The following lines work for me:
<filter>
<filter-name>springRequestContextFilter</filter-name>
<filter-class>org.springframework.web.filter.RequestContextFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>springRequestContextFilter</filter-name>
<url-pattern>/gwtRequest</url-pattern>
</filter-mapping>
I've seen this question in a couple of other places. You should try explicity defining the AccountServiceImpl as a bean in your applicationContext.xml (not the dispatch-servlet.xml) first and see if you still get the error, if you don't then you know it's that you're missing the component-scan in your application context xml which is what I think is the case.
hope this helps