RestTemplate 发送post请求

  private RestTemplate getRestTemplate() {
        RestTemplate restTemplate = new RestTemplate();
        ExtendMappingJackson2HttpMessageConverter convert
            = new ExtendMappingJackson2HttpMessageConverter();
        convert.setObjectMapper(new ObjectMapper());
        restTemplate.getMessageConverters().add(convert);
        return restTemplate;
    }

    private String post(String url, LinkedMultiValueMap params) {
        HttpHeaders headers = new HttpHeaders();
        headers.add("Content-Type", "application/x-www-form-urlencoded");
        HttpEntity> request = new HttpEntity<>(params, headers);
        ResponseEntity result = getRestTemplate().postForEntity(url,
            request, String.class);
        return result.getBody();
    }



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public class ExtendMappingJackson2HttpMessageConverter extends MappingJackson2HttpMessageConverter {
    public ExtendMappingJackson2HttpMessageConverter() {
        List mediaTypes = new ArrayList<>();
        mediaTypes.add(MediaType.ALL);
        //List mediaTypes = getSupportedMediaTypes();
        //mediaTypes.add(MediaType.TEXT_HTML);
        setSupportedMediaTypes(mediaTypes);
    }
}