Examples of org.springframework.web.bind.support.WebArgumentResolver

Package org.springframework.web.bind.support

Examples of org.springframework.web.bind.support.WebArgumentResolver

org.springframework.web.bind.support.WebArgumentResolver
SPI for resolving custom arguments for a specific handler method parameter. Typically implemented to detect sppecial parameter types, resolving well-known argument values for them.
A typical implementation could look like as follows:
```
 public class MySpecialArgumentResolver implements ArgumentResolver { public Object resolveArgument(MethodParameter methodParameter, NativeWebRequest webRequest) { if (methodParameter.getParameterType().equals(MySpecialArg.class)) { return new MySpecialArg("myValue"); } return UNRESOLVED; } }
```
@author Juergen Hoeller @since 2.5.2 @see org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter#setCustomArgumentResolvers @see org.springframework.web.portlet.mvc.annotation.AnnotationMethodHandlerAdapter#setCustomArgumentResolvers


  // request related
  
  @Autowired
  public CustomArgumentController(RequestMappingHandlerAdapter controllerInvoker) {
    WebArgumentResolver argResolver = new WebArgumentResolver() {
      public Object resolveArgument(MethodParameter param, NativeWebRequest request) throws Exception {
        RequestAttribute attr = param.getParameterAnnotation(RequestAttribute.class);
        if (attr != null) {
          return request.getAttribute(attr.value(), WebRequest.SCOPE_REQUEST);
        } else {

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    assertThat(f.matches(this.request, this.methodParameter), is(false));
  }


  @Test
  public void shouldFilterIfWebArgumentResolved() throws Exception {
    WebArgumentResolver w1 = mock(WebArgumentResolver.class);
    WebArgumentResolver w2 = mock(WebArgumentResolver.class);
    WebArgumentResolver w3 = mock(WebArgumentResolver.class);
    given(w1.resolveArgument(this.methodParameter, this.request)).willReturn(WebArgumentResolver.UNRESOLVED);
    given(w3.resolveArgument(this.methodParameter, this.request)).willReturn(WebArgumentResolver.UNRESOLVED);
    WebArgumentResolverMethodParameterFilter f = new WebArgumentResolverMethodParameterFilter(w1, w2, w3);
    assertThat(f.matches(this.request, this.methodParameter), is(true));
    InOrder ordered = inOrder(w1, w2, w3);
    ordered.verify(w1).resolveArgument(this.methodParameter, this.request);
    ordered.verify(w2).resolveArgument(this.methodParameter, this.request);

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  public void shouldIgnoreParameters() throws Exception {
    Map<String, Object> source = new HashMap<String, Object>();
    source.put("p1", new Object());
    source.put("p2", Locale.UK);
    source.put("p3", new Resolvable("123"));
    WebArgumentResolver argumentResolver = new WebArgumentResolver() {
      public Object resolveArgument(MethodParameter methodParameter, NativeWebRequest webRequest)
          throws Exception {
        if (Resolvable.class.equals(methodParameter.getParameterType())) {
          return null;
        }

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    this.resolver.resolveDestination(this.facesContext, "@missing.method", Locale.UK, null);
  }


  @Test
  public void shouldSupportContextSetters() throws Exception {
    WebArgumentResolver webArgumentResolver = mock(WebArgumentResolver.class);
    WebArgumentResolver[] customArgumentResolvers = new WebArgumentResolver[] { webArgumentResolver };
    PathMatcher pathMatcher = mock(PathMatcher.class);
    WebBindingInitializer webBindingInitializer = mock(WebBindingInitializer.class);
    ParameterNameDiscoverer parameterNameDiscoverer = mock(ParameterNameDiscoverer.class);
    this.resolver.setCustomArgumentResolvers(customArgumentResolvers);

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Related Classes of org.springframework.web.bind.support.WebArgumentResolver

org.springframework.samples.mvc.data.custom.CustomArgumentController

org.springframework.springfaces.mvc.navigation.requestmapped.filter.WebArgumentResolverMethodParameterFilterTest

org.springframework.springfaces.mvc.navigation.requestmapped.RequestMappedRedirectDestinationViewResolverTest

org.springframework.springfaces.mvc.navigation.requestmapped.RequestMappedRedirectViewModelBuilderTest

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