@RequestBody supports java.util.Optional
Issue: SPR-15007
This commit is contained in:
parent
52f664139f
commit
eeb7ae537f
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@ -22,10 +22,12 @@ import java.io.PushbackInputStream;
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import java.lang.annotation.Annotation;
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import java.lang.reflect.Type;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.EnumSet;
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import java.util.LinkedHashSet;
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import java.util.List;
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import java.util.Optional;
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import java.util.Set;
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import javax.servlet.http.HttpServletRequest;
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@ -59,6 +61,7 @@ import org.springframework.web.method.support.HandlerMethodArgumentResolver;
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*
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* @author Arjen Poutsma
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* @author Rossen Stoyanchev
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* @author Juergen Hoeller
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* @since 3.1
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*/
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public abstract class AbstractMessageConverterMethodArgumentResolver implements HandlerMethodArgumentResolver {
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@ -128,17 +131,17 @@ public abstract class AbstractMessageConverterMethodArgumentResolver implements
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* reading from the given request.
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* @param <T> the expected type of the argument value to be created
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* @param webRequest the current request
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* @param methodParam the method argument
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* @param parameter the method parameter descriptor (may be {@code null})
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* @param paramType the type of the argument value to be created
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* @return the created method argument value
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* @throws IOException if the reading from the request fails
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* @throws HttpMediaTypeNotSupportedException if no suitable message converter is found
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*/
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protected <T> Object readWithMessageConverters(NativeWebRequest webRequest, MethodParameter methodParam,
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protected <T> Object readWithMessageConverters(NativeWebRequest webRequest, MethodParameter parameter,
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Type paramType) throws IOException, HttpMediaTypeNotSupportedException, HttpMessageNotReadableException {
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HttpInputMessage inputMessage = createInputMessage(webRequest);
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return readWithMessageConverters(inputMessage, methodParam, paramType);
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return readWithMessageConverters(inputMessage, parameter, paramType);
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}
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/**
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@ -146,7 +149,7 @@ public abstract class AbstractMessageConverterMethodArgumentResolver implements
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* from the given HttpInputMessage.
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* @param <T> the expected type of the argument value to be created
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* @param inputMessage the HTTP input message representing the current request
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* @param param the method parameter descriptor (may be {@code null})
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* @param parameter the method parameter descriptor (may be {@code null})
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* @param targetType the target type, not necessarily the same as the method
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* parameter type, e.g. for {@code HttpEntity<String>}.
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* @return the created method argument value
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@ -154,7 +157,7 @@ public abstract class AbstractMessageConverterMethodArgumentResolver implements
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* @throws HttpMediaTypeNotSupportedException if no suitable message converter is found
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*/
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@SuppressWarnings("unchecked")
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protected <T> Object readWithMessageConverters(HttpInputMessage inputMessage, MethodParameter param,
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protected <T> Object readWithMessageConverters(HttpInputMessage inputMessage, MethodParameter parameter,
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Type targetType) throws IOException, HttpMediaTypeNotSupportedException, HttpMessageNotReadableException {
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MediaType contentType;
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@ -170,11 +173,11 @@ public abstract class AbstractMessageConverterMethodArgumentResolver implements
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contentType = MediaType.APPLICATION_OCTET_STREAM;
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}
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Class<?> contextClass = (param != null ? param.getContainingClass() : null);
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Class<?> contextClass = (parameter != null ? parameter.getContainingClass() : null);
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Class<T> targetClass = (targetType instanceof Class ? (Class<T>) targetType : null);
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if (targetClass == null) {
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ResolvableType resolvableType = (param != null ?
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ResolvableType.forMethodParameter(param) : ResolvableType.forType(targetType));
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ResolvableType resolvableType = (parameter != null ?
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ResolvableType.forMethodParameter(parameter) : ResolvableType.forType(targetType));
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targetClass = (Class<T>) resolvableType.resolve();
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}
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@ -193,13 +196,12 @@ public abstract class AbstractMessageConverterMethodArgumentResolver implements
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logger.debug("Read [" + targetType + "] as \"" + contentType + "\" with [" + converter + "]");
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}
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if (inputMessage.getBody() != null) {
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inputMessage = getAdvice().beforeBodyRead(inputMessage, param, targetType, converterType);
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inputMessage = getAdvice().beforeBodyRead(inputMessage, parameter, targetType, converterType);
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body = genericConverter.read(targetType, contextClass, inputMessage);
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body = getAdvice().afterBodyRead(body, inputMessage, param, targetType, converterType);
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body = getAdvice().afterBodyRead(body, inputMessage, parameter, targetType, converterType);
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}
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else {
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body = null;
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body = getAdvice().handleEmptyBody(body, inputMessage, param, targetType, converterType);
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body = getAdvice().handleEmptyBody(null, inputMessage, parameter, targetType, converterType);
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}
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break;
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}
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@ -210,13 +212,12 @@ public abstract class AbstractMessageConverterMethodArgumentResolver implements
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logger.debug("Read [" + targetType + "] as \"" + contentType + "\" with [" + converter + "]");
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}
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if (inputMessage.getBody() != null) {
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inputMessage = getAdvice().beforeBodyRead(inputMessage, param, targetType, converterType);
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inputMessage = getAdvice().beforeBodyRead(inputMessage, parameter, targetType, converterType);
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body = ((HttpMessageConverter<T>) converter).read(targetClass, inputMessage);
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body = getAdvice().afterBodyRead(body, inputMessage, param, targetType, converterType);
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body = getAdvice().afterBodyRead(body, inputMessage, parameter, targetType, converterType);
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}
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else {
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body = null;
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body = getAdvice().handleEmptyBody(body, inputMessage, param, targetType, converterType);
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body = getAdvice().handleEmptyBody(null, inputMessage, parameter, targetType, converterType);
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}
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break;
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}
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@ -254,12 +255,12 @@ public abstract class AbstractMessageConverterMethodArgumentResolver implements
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* Spring's {@link org.springframework.validation.annotation.Validated},
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* and custom annotations whose name starts with "Valid".
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* @param binder the DataBinder to be used
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* @param methodParam the method parameter
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* @see #isBindExceptionRequired
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* @param parameter the method parameter descriptor
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* @since 4.1.5
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* @see #isBindExceptionRequired
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*/
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protected void validateIfApplicable(WebDataBinder binder, MethodParameter methodParam) {
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Annotation[] annotations = methodParam.getParameterAnnotations();
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protected void validateIfApplicable(WebDataBinder binder, MethodParameter parameter) {
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Annotation[] annotations = parameter.getParameterAnnotations();
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for (Annotation ann : annotations) {
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Validated validatedAnn = AnnotationUtils.getAnnotation(ann, Validated.class);
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if (validatedAnn != null || ann.annotationType().getSimpleName().startsWith("Valid")) {
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@ -274,17 +275,37 @@ public abstract class AbstractMessageConverterMethodArgumentResolver implements
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/**
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* Whether to raise a fatal bind exception on validation errors.
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* @param binder the data binder used to perform data binding
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* @param methodParam the method argument
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* @param parameter the method parameter descriptor
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* @return {@code true} if the next method argument is not of type {@link Errors}
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* @since 4.1.5
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*/
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protected boolean isBindExceptionRequired(WebDataBinder binder, MethodParameter methodParam) {
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int i = methodParam.getParameterIndex();
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Class<?>[] paramTypes = methodParam.getMethod().getParameterTypes();
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protected boolean isBindExceptionRequired(WebDataBinder binder, MethodParameter parameter) {
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int i = parameter.getParameterIndex();
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Class<?>[] paramTypes = parameter.getMethod().getParameterTypes();
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boolean hasBindingResult = (paramTypes.length > (i + 1) && Errors.class.isAssignableFrom(paramTypes[i + 1]));
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return !hasBindingResult;
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}
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/**
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* Adapt the given argument against the method parameter, if necessary.
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* @param arg the resolved argument
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* @param parameter the method parameter descriptor
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* @return the adapted argument, or the original resolved argument as-is
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* @since 4.3.5
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*/
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protected Object adaptArgumentIfNecessary(Object arg, MethodParameter parameter) {
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if (parameter.getParameterType() == Optional.class) {
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if (arg == null || (arg instanceof Collection && ((Collection) arg).isEmpty()) ||
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(arg instanceof Object[] && ((Object[]) arg).length == 0)) {
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return Optional.empty();
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}
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else {
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return Optional.of(arg);
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}
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}
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return arg;
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}
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private static class EmptyBodyCheckingHttpInputMessage implements HttpInputMessage {
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@ -16,9 +16,7 @@
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package org.springframework.web.servlet.mvc.method.annotation;
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import java.util.Collection;
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import java.util.List;
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import java.util.Optional;
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import javax.servlet.http.HttpServletRequest;
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import org.springframework.core.MethodParameter;
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@ -156,17 +154,7 @@ public class RequestPartMethodArgumentResolver extends AbstractMessageConverterM
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throw new MissingServletRequestPartException(name);
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}
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}
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if (parameter.getParameterType() == Optional.class) {
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if (arg == null || (arg instanceof Collection && ((Collection) arg).isEmpty()) ||
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(arg instanceof Object[] && ((Object[]) arg).length == 0)) {
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arg = Optional.empty();
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}
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else {
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arg = Optional.of(arg);
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}
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}
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return arg;
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return adaptArgumentIfNecessary(arg, parameter);
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}
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private String getPartName(MethodParameter methodParam, RequestPart requestPart) {
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@ -19,7 +19,6 @@ package org.springframework.web.servlet.mvc.method.annotation;
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import java.io.IOException;
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import java.lang.reflect.Type;
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import java.util.List;
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import javax.servlet.http.HttpServletRequest;
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import org.springframework.core.Conventions;
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@ -55,6 +54,7 @@ import org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolv
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*
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* @author Arjen Poutsma
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* @author Rossen Stoyanchev
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* @author Juergen Hoeller
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* @since 3.1
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*/
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public class RequestResponseBodyMethodProcessor extends AbstractMessageConverterMethodProcessor {
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@ -124,7 +124,8 @@ public class RequestResponseBodyMethodProcessor extends AbstractMessageConverter
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public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer,
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NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {
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Object arg = readWithMessageConverters(webRequest, parameter, parameter.getGenericParameterType());
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parameter = parameter.nestedIfOptional();
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Object arg = readWithMessageConverters(webRequest, parameter, parameter.getNestedGenericParameterType());
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String name = Conventions.getVariableNameForParameter(parameter);
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WebDataBinder binder = binderFactory.createBinder(webRequest, arg, name);
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@ -136,28 +137,28 @@ public class RequestResponseBodyMethodProcessor extends AbstractMessageConverter
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}
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mavContainer.addAttribute(BindingResult.MODEL_KEY_PREFIX + name, binder.getBindingResult());
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return arg;
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return adaptArgumentIfNecessary(arg, parameter);
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}
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@Override
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protected <T> Object readWithMessageConverters(NativeWebRequest webRequest, MethodParameter methodParam,
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protected <T> Object readWithMessageConverters(NativeWebRequest webRequest, MethodParameter parameter,
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Type paramType) throws IOException, HttpMediaTypeNotSupportedException, HttpMessageNotReadableException {
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HttpServletRequest servletRequest = webRequest.getNativeRequest(HttpServletRequest.class);
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ServletServerHttpRequest inputMessage = new ServletServerHttpRequest(servletRequest);
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Object arg = readWithMessageConverters(inputMessage, methodParam, paramType);
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Object arg = readWithMessageConverters(inputMessage, parameter, paramType);
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if (arg == null) {
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if (checkRequired(methodParam)) {
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if (checkRequired(parameter)) {
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throw new HttpMessageNotReadableException("Required request body is missing: " +
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methodParam.getMethod().toGenericString());
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parameter.getMethod().toGenericString());
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}
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}
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return arg;
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}
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protected boolean checkRequired(MethodParameter methodParam) {
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return methodParam.getParameterAnnotation(RequestBody.class).required();
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protected boolean checkRequired(MethodParameter parameter) {
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return (parameter.getParameterAnnotation(RequestBody.class).required() && !parameter.isOptional());
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}
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@Override
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@ -21,6 +21,7 @@ import java.nio.charset.StandardCharsets;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import java.util.Optional;
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import javax.validation.Valid;
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import javax.validation.constraints.NotNull;
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@ -61,6 +62,7 @@ import static org.mockito.BDDMockito.*;
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*
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* @author Arjen Poutsma
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* @author Rossen Stoyanchev
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* @author Juergen Hoeller
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*/
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public class RequestResponseBodyMethodProcessorMockTests {
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@ -74,6 +76,7 @@ public class RequestResponseBodyMethodProcessorMockTests {
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private MethodParameter paramInt;
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private MethodParameter paramValidBean;
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private MethodParameter paramStringNotRequired;
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private MethodParameter paramOptionalString;
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private MethodParameter returnTypeString;
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private MethodParameter returnTypeInt;
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private MethodParameter returnTypeStringProduces;
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@ -102,12 +105,13 @@ public class RequestResponseBodyMethodProcessorMockTests {
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Method methodHandle1 = getClass().getMethod("handle1", String.class, Integer.TYPE);
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paramRequestBodyString = new MethodParameter(methodHandle1, 0);
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paramInt = new MethodParameter(methodHandle1, 1);
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paramValidBean = new MethodParameter(getClass().getMethod("handle2", SimpleBean.class), 0);
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paramStringNotRequired = new MethodParameter(getClass().getMethod("handle3", String.class), 0);
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paramOptionalString = new MethodParameter(getClass().getMethod("handle4", Optional.class), 0);
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returnTypeString = new MethodParameter(methodHandle1, -1);
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returnTypeInt = new MethodParameter(getClass().getMethod("handle2"), -1);
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returnTypeStringProduces = new MethodParameter(getClass().getMethod("handle3"), -1);
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returnTypeResource = new MethodParameter(getClass().getMethod("handle6"), -1);
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paramValidBean = new MethodParameter(getClass().getMethod("handle4", SimpleBean.class), 0);
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paramStringNotRequired = new MethodParameter(getClass().getMethod("handle5", String.class), 0);
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returnTypeInt = new MethodParameter(getClass().getMethod("handle5"), -1);
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returnTypeStringProduces = new MethodParameter(getClass().getMethod("handle6"), -1);
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returnTypeResource = new MethodParameter(getClass().getMethod("handle7"), -1);
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mavContainer = new ModelAndViewContainer();
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@ -204,9 +208,7 @@ public class RequestResponseBodyMethodProcessorMockTests {
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processor.resolveArgument(paramRequestBodyString, mavContainer, webRequest, null);
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}
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// SPR-9942
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@Test(expected = HttpMessageNotReadableException.class)
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@Test(expected = HttpMessageNotReadableException.class) // SPR-9942
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public void resolveArgumentRequiredNoContent() throws Exception {
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servletRequest.setContentType(MediaType.TEXT_PLAIN_VALUE);
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servletRequest.setContent(new byte[0]);
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@ -215,6 +217,23 @@ public class RequestResponseBodyMethodProcessorMockTests {
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assertNull(processor.resolveArgument(paramRequestBodyString, mavContainer, webRequest, new ValidatingBinderFactory()));
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}
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@Test
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public void resolveArgumentNotGetRequests() throws Exception {
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servletRequest.setMethod("GET");
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servletRequest.setContent(new byte[0]);
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given(stringMessageConverter.canRead(String.class, MediaType.APPLICATION_OCTET_STREAM)).willReturn(false);
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assertNull(processor.resolveArgument(paramStringNotRequired, mavContainer, webRequest, new ValidatingBinderFactory()));
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}
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@Test
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public void resolveArgumentNotRequiredWithContent() throws Exception {
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servletRequest.setContentType("text/plain");
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servletRequest.setContent("body".getBytes());
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given(stringMessageConverter.canRead(String.class, MediaType.TEXT_PLAIN)).willReturn(true);
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given(stringMessageConverter.read(eq(String.class), isA(HttpInputMessage.class))).willReturn("body");
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assertEquals("body", processor.resolveArgument(paramStringNotRequired, mavContainer, webRequest, new ValidatingBinderFactory()));
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}
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@Test
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public void resolveArgumentNotRequiredNoContent() throws Exception {
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servletRequest.setContentType("text/plain");
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@ -223,8 +242,7 @@ public class RequestResponseBodyMethodProcessorMockTests {
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assertNull(processor.resolveArgument(paramStringNotRequired, mavContainer, webRequest, new ValidatingBinderFactory()));
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}
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// SPR-13417
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@Test
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@Test // SPR-13417
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public void resolveArgumentNotRequiredNoContentNoContentType() throws Exception {
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servletRequest.setContent(new byte[0]);
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given(stringMessageConverter.canRead(String.class, MediaType.TEXT_PLAIN)).willReturn(true);
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@ -233,11 +251,28 @@ public class RequestResponseBodyMethodProcessorMockTests {
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}
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@Test
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public void resolveArgumentNotGetRequests() throws Exception {
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servletRequest.setMethod("GET");
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public void resolveArgumentOptionalWithContent() throws Exception {
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servletRequest.setContentType("text/plain");
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servletRequest.setContent("body".getBytes());
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given(stringMessageConverter.canRead(String.class, MediaType.TEXT_PLAIN)).willReturn(true);
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given(stringMessageConverter.read(eq(String.class), isA(HttpInputMessage.class))).willReturn("body");
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assertEquals(Optional.of("body"), processor.resolveArgument(paramOptionalString, mavContainer, webRequest, new ValidatingBinderFactory()));
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}
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@Test
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public void resolveArgumentOptionalNoContent() throws Exception {
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servletRequest.setContentType("text/plain");
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servletRequest.setContent(new byte[0]);
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given(stringMessageConverter.canRead(String.class, MediaType.TEXT_PLAIN)).willReturn(true);
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assertEquals(Optional.empty(), processor.resolveArgument(paramOptionalString, mavContainer, webRequest, new ValidatingBinderFactory()));
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}
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@Test
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public void resolveArgumentOptionalNoContentNoContentType() throws Exception {
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servletRequest.setContent(new byte[0]);
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given(stringMessageConverter.canRead(String.class, MediaType.TEXT_PLAIN)).willReturn(true);
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given(stringMessageConverter.canRead(String.class, MediaType.APPLICATION_OCTET_STREAM)).willReturn(false);
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assertNull(processor.resolveArgument(paramStringNotRequired, mavContainer, webRequest, new ValidatingBinderFactory()));
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assertEquals(Optional.empty(), processor.resolveArgument(paramOptionalString, mavContainer, webRequest, new ValidatingBinderFactory()));
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}
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@Test
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@ -311,9 +346,7 @@ public class RequestResponseBodyMethodProcessorMockTests {
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assertEquals(200, servletResponse.getStatus());
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}
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// SPR-9841
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@Test
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@Test // SPR-9841
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public void handleReturnValueMediaTypeSuffix() throws Exception {
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String body = "Foo";
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MediaType accepted = MediaType.APPLICATION_XHTML_XML;
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@ -339,29 +372,37 @@ public class RequestResponseBodyMethodProcessorMockTests {
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}
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@SuppressWarnings("unused")
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public int handle2() {
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public void handle2(@Valid @RequestBody SimpleBean b) {
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}
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@SuppressWarnings("unused")
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public void handle3(@RequestBody(required = false) String s) {
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}
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@SuppressWarnings("unused")
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public void handle4(@RequestBody Optional<String> s) {
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}
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@SuppressWarnings("unused")
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public int handle5() {
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return 42;
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}
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@SuppressWarnings("unused")
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@ResponseBody
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public String handle3() {
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public String handle6() {
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return null;
|
||||
}
|
||||
|
||||
@SuppressWarnings("unused")
|
||||
public void handle4(@Valid @RequestBody SimpleBean b) {
|
||||
}
|
||||
|
||||
@SuppressWarnings("unused")
|
||||
public void handle5(@RequestBody(required=false) String s) {
|
||||
}
|
||||
|
||||
@SuppressWarnings("unused")
|
||||
@ResponseBody
|
||||
public Resource handle6() {return null;}
|
||||
public Resource handle7() {
|
||||
return null;
|
||||
}
|
||||
|
||||
|
||||
private final class ValidatingBinderFactory implements WebDataBinderFactory {
|
||||
|
||||
@Override
|
||||
public WebDataBinder createBinder(NativeWebRequest webRequest, Object target, String objectName) throws Exception {
|
||||
LocalValidatorFactoryBean validator = new LocalValidatorFactoryBean();
|
||||
|
@ -372,6 +413,7 @@ public class RequestResponseBodyMethodProcessorMockTests {
|
|||
}
|
||||
}
|
||||
|
||||
|
||||
@SuppressWarnings("unused")
|
||||
private static class SimpleBean {
|
||||
|
||||
|
|
Loading…
Reference in New Issue