Java 如何发出 Spring RestTemplate PATCH 请求
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How to make a Spring RestTemplate PATCH request
提问by Reezy
I need to make a call to a service using Spring's RestTemplate using the HTTP PATCH verb. From what I read I need to use the execute() or exchange() method, but I have no idea on how to use it. The service call returns a HTTP 200 OK status, as well as a JSON object which I'm not particularly interested in.
我需要使用 HTTP PATCH 动词使用 Spring 的 RestTemplate 调用服务。从我读到的内容来看，我需要使用 execute() 或 exchange() 方法，但我不知道如何使用它。服务调用返回一个 HTTP 200 OK 状态，以及一个我不是特别感兴趣的 JSON 对象。
Any help will be appreciated thanks.
任何帮助将不胜感激，谢谢。
回答by Lucas Holt
It is possible to use the PATCH verb, but you must use the Apache HTTP client lib with the RestTemplate class with exchange(). The mapper portion may not be necessary for you. The EmailPatch class below only contains the field we want to update in the request.
可以使用 PATCH 动词，但您必须将 Apache HTTP 客户端库与 RestTemplate 类与 exchange() 一起使用。您可能不需要映射器部分。下面的 EmailPatch 类只包含我们要在请求中更新的字段。
ObjectMapper mapper = new ObjectMapper();
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
mapper.registerModule(new Hymanson2HalModule());
MappingHymanson2HttpMessageConverter converter = new MappingHymanson2HttpMessageConverter();
converter.setSupportedMediaTypes(MediaType.parseMediaTypes("application/hal+json"));
converter.setObjectMapper(mapper);
HttpClient httpClient = HttpClients.createDefault();
RestTemplate restTemplate = new RestTemplate(Collections.<HttpMessageConverter<?>> singletonList(converter));
restTemplate.setRequestFactory(new HttpComponentsClientHttpRequestFactory(httpClient));
EmailPatch patch = new EmailPatch();
patch.setStatus(1);
ResponseEntity<String> exchange = restTemplate.exchange(url, HttpMethod.PATCH, new HttpEntity<EmailPatch>(patch),
String.class);
