Example usage for org.springframework.web.method.support HandlerMethodReturnValueHandler handleReturnValue

Introduction

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

Prototype

void handleReturnValue(@Nullable Object returnValue, MethodParameter returnType,
        ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception;

Source Link

Document

Handle the given return value by adding attributes to the model and setting a view or setting the ModelAndViewContainer#setRequestHandled flag to true to indicate the response has been handled directly.

Usage

From source file:org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.java

/**
 * Iterate over registered {@link HandlerMethodReturnValueHandler}s and invoke the one that supports it.
 * @throws IllegalStateException if no suitable {@link HandlerMethodReturnValueHandler} is found.
 *//*from  www  .ja v  a2 s  . c  om*/
@Override
public void handleReturnValue(@Nullable Object returnValue, MethodParameter returnType,
        ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {

    HandlerMethodReturnValueHandler handler = selectHandler(returnValue, returnType);
    if (handler == null) {
        throw new IllegalArgumentException(
                "Unknown return value type: " + returnType.getParameterType().getName());
    }
    handler.handleReturnValue(returnValue, returnType, mavContainer, webRequest);
}

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