restTemplate发送post请求，响应报文乱码

背景

今天在项目中调用百度云的智能地址识别，使用的是restTemplate发送post请求，最后发现响应体内的中文报错，静态方法如下：

public static AiAddress getAddress(String addressText) throws BizException {
        String url = "https://aip.baidubce.com/rpc/2.0/nlp/v1/address?charset=UTF-8&access_token=" + getAuth();
        AiAddress aiAddress = new AiAddress();
        try {
            RestTemplate restTemplate = new RestTemplate();
            //设置头信息
            HttpHeaders headers = new HttpHeaders();
            headers.setContentType(MediaType.APPLICATION_JSON);
            //构造表单参数
            MultiValueMap<String, String> params = new LinkedMultiValueMap<>();
            params.add("text", addressText);
            HttpEntity<MultiValueMap<String, String>> requestEntity = new HttpEntity<>(params, headers);
            ResponseEntity<String> responseEntity = restTemplate.postForEntity(url, requestEntity, String.class);
            aiAddress = mapper.readValue(responseEntity.getBody(), AiAddress.class);
        } catch (Exception e) {
            throw new BizException("文本内容无法识别，请重新输入后再试");
        }
        return aiAddress;
    }

使用postman模拟请求，结果如下：

解决方案

  restTemplate.getMessageConverters().set(1, new StringHttpMessageConverter(StandardCharsets.UTF_8));

设置完之后，就会解决响应报文的乱码问题