I am trying to pass a List of objects from my controller which I have to display in my jsp. However I am getting the exception,
[org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver] (http-localhost/127.0.0.1:8080-1) Handler execution resulted in exception: Could not find acceptable representation
The problem is that the headers are not getting set correctly inside the controller even when using produces = "application/json"
inside @RequestMapping(value = "/getEmpDetails.html", method = RequestMethod.GET, produces = "application/json" )
Perhaps this could be due to the exception
Handler execution resulted in exception: Could not find acceptable representation
And in browser it is showing 406 error
JBWEB000126: The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request 'Accept' headers.
I am not able to find an answer for this,
I have checked similar posts but the answers stated there are not helping me solve my problem.
I have used jars
1) jackson-mapper-asl-1.9.13.jar
2) jackson-core-asl-1.9.13.jar
3) jackson-databind-2.8.7.jar
4) jackson-core-2.8.7.jar
5) jackson-annotations-2.8.7.jar
6) jackson-datatype-joda-2.8.7.jar
7) jackson-jaxrs-json-provider-2.8.7.jar
8) jackson-module-jaxb-annotations-2.8.7.jar
I assume that only the first one is needed.
I am not using maven structure, so there is no pom.xml. I have not made any other changes to AppConfig or WebInitializer (i am using java configuration instead of xml)
The following is my AppConfig
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.myapps.empregister")
public class AppConfig extends WebMvcConfigurerAdapter {
@Override
public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
configurer
.defaultContentType(MediaType.TEXT_HTML)
.parameterName("type")
.ignoreUnknownPathExtensions(false)
.ignoreAcceptHeader(true)
.favorParameter(true)
.favorPathExtension(false)
.useJaf(true);
}
@Bean
public ViewResolver contentNegotiatingViewResolver(ContentNegotiationManager manager) {
ContentNegotiatingViewResolver resolver = new ContentNegotiatingViewResolver();
resolver.setContentNegotiationManager(manager);
// Define all possible view resolvers
List<ViewResolver> resolvers = new ArrayList<ViewResolver>();
resolvers.add(jsonViewResolver());
resolvers.add(defaultViewResolver());
resolvers.add(excelViewResolver());
resolver.setViewResolvers(resolvers);
return resolver;
}
@Bean
public ViewResolver defaultViewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setViewClass(JstlView.class);
viewResolver.setPrefix("/WEB-INF/views/");
viewResolver.setSuffix(".jsp");
viewResolver.setOrder(2);
return viewResolver;
}
@Bean(name="excelView")
public ViewResolver excelViewResolver() {
ResourceBundleViewResolver viewResolver = new ResourceBundleViewResolver();
viewResolver.setBasename("views");
viewResolver.setOrder(1);
return viewResolver;
}
@Bean
public ViewResolver jsonViewResolver() {
return new JsonViewResolver();
}
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
}
@Bean(name = "multipartResolver")
public StandardServletMultipartResolver resolver() {
return new StandardServletMultipartResolver();
}
}
WebAppInitializer/ (web.xml equivalent)
public class WebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class[] { AppConfig.class };
}
@Override
protected Class<?>[] getServletConfigClasses() {
return null;
}
@Override
protected String[] getServletMappings() {
return new String[] { "*.html", "*.json"};
}
@Override
protected void customizeRegistration(ServletRegistration.Dynamic registration) {
registration.setMultipartConfig(getMultipartConfigElement());
}
private MultipartConfigElement getMultipartConfigElement() {
MultipartConfigElement multipartConfigElement = new MultipartConfigElement( LOCATION, MAX_FILE_SIZE, MAX_REQUEST_SIZE, FILE_SIZE_THRESHOLD);
return multipartConfigElement;
}
@Override
protected Filter[] getServletFilters() {
CharacterEncodingFilter encodingFilter = new CharacterEncodingFilter();
encodingFilter.setEncoding("UTF-8");
encodingFilter.setForceEncoding(true);
---------
}
@Override
protected void registerDispatcherServlet(ServletContext servletContext) {
super.registerDispatcherServlet(servletContext);
servletContext.addListener(new HttpSessionEventPublisher());
servletContext.addListener(new RequestContextListener());
SessionCookieConfig cookieConfig = servletContext.getSessionCookieConfig();
cookieConfig.setHttpOnly(true);
/*** Login Success ***/
servletContext.setInitParameter("HOME_URL", "Home.html");
servletContext.setInitParameter("SSO_ENABLED", "Yes");
servletContext.setInitParameter("SSO_LOGIN_URL", "ssoLogin.html");
/*** Login Failure ***/
servletContext.setInitParameter("LOGIN_ERROR_URL", "index.jsp");
servletContext.setInitParameter("LOGOUT_URL", "index.jsp");
/*** Bypass Redirect ***/
servletContext.setInitParameter("BYPASS-URLS", "Home.html");
servletContext.setInitParameter("defaultHtmlEscape", "true");
servletContext.setInitParameter("log4jExposeWebAppRoot", "false");
/*** Login Page ***/
servletContext.setInitParameter("LOGIN_URL", "index.jsp");
/*** Default Home Page ***/
servletContext.setInitParameter("SHOW_DEFAULT_HOMEPAGE", "Yes");
}
@SuppressWarnings("unused")
private AnnotationConfigWebApplicationContext getContext() {
AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
context.setConfigLocations("com.....config");
return context;
}
private static final String LOCATION = "C:/TESTdevelopments/files/"; // Temporary location where files will be stored
private static final long MAX_FILE_SIZE = 5242880; // 5MB : Max file size.
// Beyond that size spring will throw exception.
private static final long MAX_REQUEST_SIZE = 20971520; // 20MB : Total request size containing Multi part.
private static final int FILE_SIZE_THRESHOLD = 0; // Size threshold after which files will be written to disk
}
JsonViewResolver class
public class JsonViewResolver implements ViewResolver{
@Override
public View resolveViewName(String viewName, Locale locale) throws Exception {
MappingJackson2JsonView view = new MappingJackson2JsonView();
view.setPrettyPrint(true);
return view;
}
}
The following is my controller code.
@RequestMapping(method = RequestMethod.GET, value = "/getEmpDetails.html", produces="application/json;charset=utf-8")
public @ResponseBody List<EmpRecordParams> getEmpDetails(@RequestParam String id, HttpServletRequest request, HttpServletResponse response,
Model model) {
System.out.println("get");
List<EmpRecordParams> empRecordParams = empRegisterService.getEmpDetails(id);
return empRecordParams;
}
In my jsp I use ajax as follows:
var empDetails = function() {
$
.ajax({
type : "GET",
url : "${pageContext.request.contextPath}/new/getEmpDetails.html",
headers: {Accept: '*/*'},
data : {
"id" : $("#empNo").val()
},
success : function(data) {
//Other functions
-------------
}
}
please help me with resolving this exception.
Thanks in advance
