訊息轉換器

您可以透過重寫 configureMessageConverters() 來配置要使用的 HttpMessageConverter 例項。

以下示例配置了帶有自定義對映器（而不是預設對映器）的自定義 Jackson JSON 和 XML 轉換器

Java
Kotlin

@Configuration
public class WebConfiguration implements WebMvcConfigurer {

	@Override
	public void configureMessageConverters(HttpMessageConverters.ServerBuilder builder) {
		JsonMapper jsonMapper = JsonMapper.builder()
				.findAndAddModules()
				.enable(SerializationFeature.INDENT_OUTPUT)
				.defaultDateFormat(new SimpleDateFormat("yyyy-MM-dd"))
				.build();
		XmlMapper xmlMapper = XmlMapper.builder()
				.findAndAddModules()
				.defaultUseWrapper(false)
				.build();
		builder.withJsonConverter(new JacksonJsonHttpMessageConverter(jsonMapper))
				.withXmlConverter(new JacksonXmlHttpMessageConverter(xmlMapper));
	}
}

@Configuration
class WebConfiguration : WebMvcConfigurer {

	override fun configureMessageConverters(builder: HttpMessageConverters.ServerBuilder) {
		val jsonMapper = JsonMapper.builder()
			.findAndAddModules()
			.enable(SerializationFeature.INDENT_OUTPUT)
			.defaultDateFormat(SimpleDateFormat("yyyy-MM-dd"))
			.build()
		val xmlMapper = XmlMapper.builder()
			.findAndAddModules()
			.defaultUseWrapper(false)
			.build()
		builder.withJsonConverter(JacksonJsonHttpMessageConverter(jsonMapper))
			.withXmlConverter(JacksonXmlHttpMessageConverter(xmlMapper))
	}
}