Java 如何在Jackson xml解析器中将八位字节流解析为json？

我有时会收到一个webservice响应，其中设置了

content-type=application/octet-stream

，无论如何，它实际上是

application/xml

由于我无法控制Web服务，我仍然希望告诉jackson（我正在使用

SpringBoot

）将这些响应解析为xml。但是怎么做呢

我第一次尝试为jackson mapper允许八进制流，到目前为止它仍然有效：

@Bean
public RestTemplateCustomizer customizeJackson2MessageConverter() {
    return restTemplate -> {
        for (var converter : restTemplate.getMessageConverters()) {
            if (converter instanceof MappingJackson2HttpMessageConverter) { 
                jackson.getSupportedMediaTypes().add((MediaType.APPLICATION_OCTET_STREAM);
            }
        }
    };
}

但是：当涉及到解析时，我如何告诉jackson忽略/重写内容类型，并且仍然将其解析为普通json

Caused by: org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Unexpected character ('<' (code 60)): expected a valid value (number, String, array, object, 'true', 'false' or 'null'); nested exception is com.fasterxml.jackson.core.JsonParseException: Unexpected character ('<' (code 60)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
 at [Source: (ByteArrayInputStream); line: 1, column: 2]
    at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:245) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:227) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:102) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
    ... 113 more

---

原因：org.springframework.http.converter.httpMessageNodeTableException:JSON解析错误：意外字符（“我按照@chrylis的建议执行了操作：

public class ContentTypeInterceptor implements ClientHttpRequestInterceptor {
    @Override
    public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {
        ClientHttpResponse http = execution.execute(request, body);

        HttpHeaders headers = http.getHeaders();
        if (headers.getContentType() == MediaType.APPLICATION_OCTET_STREAM) {
            headers.setContentType(MediaType.APPLICATION_XML);
        }

        return http;
    }
}

编写一个拦截器，当它检测到
八位字节流时重写
内容类型
，这可能是一种更好的方法。如上所述，请参阅：