public class HttpMessageConverterExtractorimplements ResponseExtractor {
...........................
}
Exception in thread "main" org.springframework.web.client.RestClientException: Could not extract response: no suitable HttpMessageConverter found for response type [class java.lang.String] and content type [text/html;charset=utf-8]
at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:110)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:655)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:613)
at org.springframework.web.client.RestTemplate.postForObject(RestTemplate.java:380)
at HttpUtils.HttpUtils.sendGeneralRequest(HttpUtils.java:115)
@Override
@SuppressWarnings({"unchecked", "rawtypes", "resource"})
public T extractData(ClientHttpResponse response)throws IOException {
MessageBodyClientHttpResponseWrapper responseWrapper =new MessageBodyClientHttpResponseWrapper(response);
if (!responseWrapper.hasMessageBody() || responseWrapper.hasEmptyMessageBody()) {
return null;
}
MediaType contentType = getContentType(responseWrapper);
for (HttpMessageConverter messageConverter :this.messageConverters) {
if (messageConverterinstanceof GenericHttpMessageConverter) {
GenericHttpMessageConverter genericMessageConverter =
(GenericHttpMessageConverter) messageConverter;
if (genericMessageConverter.canRead(this.responseType, null, contentType)) {
if (logger.isDebugEnabled()) {
logger.debug("Reading [" +this.responseType +"] as \"" +
contentType +"\" using [" + messageConverter +"]");
}
return (T) genericMessageConverter.read(this.responseType, null, responseWrapper);
}
}
if (this.responseClass !=null) {
if (messageConverter.canRead(this.responseClass, contentType)) {
if (logger.isDebugEnabled()) {
logger.debug("Reading [" +this.responseClass.getName() +"] as \"" +
contentType +"\" using [" + messageConverter +"]");
}
return (T) messageConverter.read((Class)this.responseClass, responseWrapper);
}
}
}
throw new RestClientException("Could not extract response: no suitable HttpMessageConverter found " +
"for response type [" +this.responseType +"] and content type [" + contentType +"]");
}
protected boolean canRead(MediaType mediaType) {
if (mediaType ==null) {
return true;
}
for (MediaType supportedMediaType : getSupportedMediaTypes()) {
if (supportedMediaType.includes(mediaType)) {
return true;
}
}
return false;
}
protected boolean canWrite(MediaType mediaType) {
if (mediaType ==null || MediaType.ALL.equals(mediaType)) {
return true;
}
for (MediaType supportedMediaType : getSupportedMediaTypes()) {
if (supportedMediaType.isCompatibleWith(mediaType)) {
return true;
}
}
return false;
}
public interface HttpMessageConverter {
boolean canRead(Class var1, MediaType var2);
boolean canWrite(Class var1, MediaType var2);
List getSupportedMediaTypes();
T read(Class var1, HttpInputMessage var2)throws IOException, HttpMessageNotReadableException;
void write(T var1, MediaType var2, HttpOutputMessage var3)throws IOException, HttpMessageNotWritableException;
}
