Example usage for org.springframework.web.method.support CompositeUriComponentsContributor contributeMethodArgument

Introduction

In this page you can find the example usage for org.springframework.web.method.support CompositeUriComponentsContributor contributeMethodArgument.

Prototype

public void contributeMethodArgument(MethodParameter parameter, Object value, UriComponentsBuilder builder,
        Map<String, Object> uriVariables) 

Source Link

Document

An overloaded method that uses the ConversionService created at construction.

Usage

From source file:org.springframework.web.servlet.mvc.method.annotation.MvcUriComponentsBuilder.java

private static UriComponents applyContributors(UriComponentsBuilder builder, Method method, Object... args) {
    CompositeUriComponentsContributor contributor = getConfiguredUriComponentsContributor();
    if (contributor == null) {
        logger.debug("Using default CompositeUriComponentsContributor");
        contributor = defaultUriComponentsContributor;
    }/*from  w w w  .j  a v  a 2 s  . co m*/

    int paramCount = method.getParameterCount();
    int argCount = args.length;
    if (paramCount != argCount) {
        throw new IllegalArgumentException("Number of method parameters " + paramCount
                + " does not match number of argument values " + argCount);
    }

    final Map<String, Object> uriVars = new HashMap<>();
    for (int i = 0; i < paramCount; i++) {
        MethodParameter param = new SynthesizingMethodParameter(method, i);
        param.initParameterNameDiscovery(parameterNameDiscoverer);
        contributor.contributeMethodArgument(param, args[i], builder, uriVars);
    }

    // We may not have all URI var values, expand only what we have
    return builder.build().expand(new UriComponents.UriTemplateVariables() {
        @Override
        public Object getValue(@Nullable String name) {
            return uriVars.containsKey(name) ? uriVars.get(name)
                    : UriComponents.UriTemplateVariables.SKIP_VALUE;
        }
    });
}

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