springboot restTemplate配置

太过爱你忘了你带给我的痛 2021-11-23 00:44 356阅读 0赞

spring template配置示例

@Bean
        public RestTemplate restTemplate() {
            SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();
            requestFactory.setConnectTimeout(6000);// 设置建立连接超时时间  毫秒
            requestFactory.setReadTimeout(6000);// 设置读取数据超时时间  毫秒
            RestTemplate restTemplate = new RestTemplate(requestFactory);
    
            // jackson配置
            ObjectMapper objectMapper = new ObjectMapper();
            // 配置如果被序列化的对象没有可访问的属性  不报错，返回一个空的bean,即{}
            objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
            // 创建json消息转换器
            MappingJackson2HttpMessageConverter jacksonConverter = new MappingJackson2HttpMessageConverter(objectMapper);
            List<MediaType> mediaTypes = new ArrayList<>(jacksonConverter.getSupportedMediaTypes());
            // 为json消息转换器新增直接text_plain类型  避免遇到响应体是json,而响应头是text/plain类型无法找到适合的解析
            mediaTypes.add(MediaType.TEXT_PLAIN);
            jacksonConverter.setSupportedMediaTypes(mediaTypes);
    
            List<HttpMessageConverter<?>> messageConverters = Arrays.asList(
                    new ByteArrayHttpMessageConverter(),
                    new StringHttpMessageConverter(Charset.forName("utf-8")),
                    new ResourceHttpMessageConverter(),
                    new SourceHttpMessageConverter<>(),
                    new FormHttpMessageConverter(),
                    jacksonConverter
            );
            restTemplate.setMessageConverters(messageConverters);
            return restTemplate;
        }

各种解析器默认支持的类型表

<table> 
 <thead> 
  <tr> 
   <th>类名</th> 
   <th>支持的JavaType</th> 
   <th>支持的MediaType</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>ByteArrayHttpMessageConverter</td> 
   <td>byte[]</td> 
   <td>application/octet-stream, */*</td> 
  </tr> 
  <tr> 
   <td>StringHttpMessageConverter</td> 
   <td>String</td> 
   <td>text/plain, */*</td> 
  </tr> 
  <tr> 
   <td>ResourceHttpMessageConverter</td> 
   <td>Resource</td> 
   <td>*/*</td> 
  </tr> 
  <tr> 
   <td>SourceHttpMessageConverter</td> 
   <td>Source</td> 
   <td>application/xml, text/xml, application/*+xml</td> 
  </tr> 
  <tr> 
   <td>AllEncompassingFormHttpMessageConverter</td> 
   <td>Map&lt;K, List&lt;?&gt;&gt;</td> 
   <td>application/x-www-form-urlencoded, multipart/form-data</td> 
  </tr> 
  <tr> 
   <td>MappingJackson2HttpMessageConverter</td> 
   <td>Object</td> 
   <td>application/json, application/*+json</td> 
  </tr> 
  <tr> 
   <td>Jaxb2RootElementHttpMessageConverter</td> 
   <td>Object</td> 
   <td>application/xml, text/xml, application/*+xml</td> 
  </tr> 
  <tr> 
   <td>JavaSerializationConverter</td> 
   <td>Serializable</td> 
   <td>x-java-serialization;charset=UTF-8</td> 
  </tr> 
  <tr> 
   <td>FastJsonHttpMessageConverter</td> 
   <td>Object</td> 
   <td>*/*</td> 
  </tr> 
 </tbody> 
</table>