Could not extract response: no suitable HttpMessageConverter found for response type [class com.exam

报错信息：Could not extract response: no suitable HttpMessageConverter found for response type [class com.example.vo.WeatherData] and content type [application/octet-stream]

这是在用restTemplate获取uri返回数据，进行数据转换的时候报错的，原来的代码如下：

@Service
public class WeatherServiceImpl implements WeatherService{

    @Autowired
    RestTemplate restTemplate;
    
    String uri = "http://wthrcdn.etouch.cn/weather_mini?city=深圳";

    @Override
    public WeatherData getWeather() {
        ResponseEntity weatherData = restTemplate.getForEntity(uri, WeatherData.class);
        return weatherData.getBody();
    }
}

这里无法直接转换为对象，需要先转为String，再转为自己所需对象，修改后的代码如下

@Service
public class WeatherServiceImpl implements WeatherService{

    @Autowired
    RestTemplate restTemplate;
    
    String uri = "http://wthrcdn.etouch.cn/weather_mini?city=深圳";

    @Override
    public WeatherData getWeather() {
        ResponseEntity weatherData = restTemplate.getForEntity(uri, String.class);
        //使用ObjectMapper进行处理
        ObjectMapper mapper = new ObjectMapper();
        if(weatherData.getStatusCodeValue() == 200){
            String response = weatherData.getBody();
            WeatherData weatherData2 = null;
            try {
                weatherData2 = mapper.readValue(response, WeatherData.class);
            } catch (Exception e) {
                e.printStackTrace();
            } 
            return weatherData2;
        }
        return null;
    }
}

修改这样，运行后，请求成功