Spring Boot Produces text/csv, Could not find acceptable representation

Question

I am trying to get my Spring Boot application to return accept=text/csv, I continue to get:

org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation

I've added:

compile "com.fasterxml.jackson.dataformat:jackson-dataformat-xml:${jackson_version}"
compile "com.fasterxml.jackson.dataformat:jackson-dataformat-csv:${jackson_version}"

To my build.gradle, I am NOT using SpringMVC

and the handler looks like:

@RequestMapping(value = "/{id}/csv", method = RequestMethod.GET, produces = "text/csv")
    public List<RegistrationCode> exportToCsv(@ApiParam(name = "id", required = true, value = "string") @PathVariable String id, HttpServletResponse response) {

...
    String headerKey = "Content-Disposition";
    String headerValue = String.format("attachment; filename=\"%s\"",
        csvFileName);
    response.setHeader(headerKey, headerValue);
    response.setContentType("text/csv;charset=utf-8");
    return registrationCodes;
}

Curl example:

curl -X GET --header 'Accept: text/csv' --header 'Authorization: Bearer ...' 'http://localhost:8080/api/1001/csv'

Message Converter:

public class CsvMessageConverter extends AbstractHttpMessageConverter<List<RegistrationCode>> {

}

Example adding message converts (in traditional applicationContext.xml):

<util:list id="messageConverters">
    <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"
          p:objectMapper-ref="jsonObjectMapperFactory"/>
    <!--bean class="org.springframework.http.converter.xml.MappingJackson2XmlHttpMessageConverter"
          p:objectMapper-ref="xmlObjectMapperFactory"/-->
    <bean class="org.springframework.http.converter.StringHttpMessageConverter"/>
    <bean class="com.binding.CsvMessageConverter"/>
</util:list>

@GaëlMarziou done I have my message converted (I just can't get it to register) I'll post the header of that. — jordan.baucke, Jan 25 '17 at 00:56
I did not know you could use @RequestMapping without using Spring MVC. What's the benefit? You can't use springfox as well for swagger, right? — Gaël Marziou, Jan 25 '17 at 01:02
@GaëlMarziou correct, adding `@EnableWebMvc` or extending `WebMvcConfigurationSupport` as the majority of answers allude too breaks my application. — jordan.baucke, Jan 25 '17 at 01:06
Sorry I can't help, you're quite far from JHipster generated code. — Gaël Marziou, Jan 25 '17 at 01:08
Looking at: https://spring.io/blog/2014/12/02/latest-jackson-integration-improvements-in-spring, it should be possible to register this converter (as I would in a traditional `applicationContext.xml` file (I'll include an example) — jordan.baucke, Jan 25 '17 at 01:08

score 1 · Answer 1 · answered Jan 25 '17 at 18:33

    //Adding the message converter
@Configuration
public class MyApplicationConfiguration {
    ...    
    @Bean
    public HttpMessageConverters customConverters() {
        return new HttpMessageConverters(new CsvMessageConverter());
    }
}

I was able to find some instructions for registering a convert here:

In Spring Boot, adding a custom converter by extending MappingJackson2HttpMessageConverter seems to overwrite the existing converter

Spring Boot Produces text/csv, Could not find acceptable representation

1 Answers1