org.springframework.social.support.FormMapHttpMessageConverter Maven / Gradle / Ivy
/*
* Copyright 2015 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.social.support;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import org.springframework.http.HttpInputMessage;
import org.springframework.http.HttpOutputMessage;
import org.springframework.http.MediaType;
import org.springframework.http.converter.FormHttpMessageConverter;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.http.converter.HttpMessageNotWritableException;
import org.springframework.social.oauth2.OAuth2Template;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
/**
* Message converter that reads form-encoded data into a flat Map<String, String>.
* In contrast to FormHttpMessageConverter which reads form-encoded data into a {@link MultiValueMap}.
* Created primarily for use by {@link OAuth2Template} to handle cases where access token is returned as form-encoded data.
* @author Craig Walls
*/
public class FormMapHttpMessageConverter implements HttpMessageConverter> {
private final FormHttpMessageConverter delegate;
public FormMapHttpMessageConverter() {
delegate = new FormHttpMessageConverter();
}
public boolean canRead(Class clazz, MediaType mediaType) {
if (!Map.class.isAssignableFrom(clazz)) {
return false;
}
if (mediaType == null) {
return true;
}
for (MediaType supportedMediaType : getSupportedMediaTypes()) {
// we can't read multipart
if (!supportedMediaType.equals(MediaType.MULTIPART_FORM_DATA) &&
supportedMediaType.includes(mediaType)) {
return true;
}
}
return false;
}
public boolean canWrite(Class clazz, MediaType mediaType) {
if (!Map.class.isAssignableFrom(clazz)) {
return false;
}
if (mediaType == null || MediaType.ALL.equals(mediaType)) {
return true;
}
for (MediaType supportedMediaType : getSupportedMediaTypes()) {
if (supportedMediaType.isCompatibleWith(mediaType)) {
return true;
}
}
return false;
}
public List getSupportedMediaTypes() {
return delegate.getSupportedMediaTypes();
}
public Map read(Class> clazz, HttpInputMessage inputMessage) throws IOException, HttpMessageNotReadableException {
LinkedMultiValueMap lmvm = new LinkedMultiValueMap();
@SuppressWarnings("unchecked")
Class> mvmClazz = (Class>) lmvm.getClass();
MultiValueMap mvm = delegate.read(mvmClazz, inputMessage);
return mvm.toSingleValueMap();
}
public void write(Map t, MediaType contentType, HttpOutputMessage outputMessage) throws IOException, HttpMessageNotWritableException {
MultiValueMap mvm = new LinkedMultiValueMap();
mvm.setAll(t);
delegate.write(mvm, contentType, outputMessage);
}
}