HTTP使用RestTemplate获取标题 [英] HTTP get with headers using RestTemplate

问题描述

如何使用Spring RestTemplate发送GET请求？
其他问题已使用POST，但我需要使用GET。
当我运行这个程序时，程序继续工作，但似乎网络堵塞了，因为它在AsyncTask中，当我点击这个按钮后，当我试图运行另一个asynctask时，他们赢了't work。

How can I send a GET request using the Spring RestTemplate? Other questions have used POST, but I need to use GET. When I run this, the program continues to work, but it seems that the network is clogged because this is in an AsyncTask, and when I try to run another asynctask after I click on the button for this one, they won't work.

我试过了

I tried doing

        String url = "https://api.blah.com/2.0/search/cubes?w=jdfkl&whitespace=1";

        MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>();
        map.add("Bearer", accessToken);

        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED); //copied this from somewhere else, not sure what its for

        HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(map, headers);

        HttpMessageConverter<String> stringConverter = new StringHttpMessageConverter();
        FormHttpMessageConverter formConverter = new FormHttpMessageConverter();
        List<HttpMessageConverter<?>> msgConverters = new ArrayList<HttpMessageConverter<?>>();


        msgConverters.add(formConverter);
        msgConverters.add(new MappingJacksonHttpMessageConverter());
        msgConverters.add(stringConverter); 

        template.setMessageConverters(msgConverters);
        //SetSearchResponseData is my custom class to store the incoming JSON
        ResponseEntity<SetSearchResponseData> result = template.exchange(url, HttpMethod.GET, request, SetSearchResponseData.class);
        //If I was using post, i could have done SetSearchResponseDataresponse = restTemplate.postForObject(url, request, SetSearchResponseData.class);

推荐答案

RestTemplate getForObject（） 方法不支持设置标题。解决方案是使用 exchange（） 方法。

The RestTemplate getForObject() method does not support setting headers. The solution is to use the exchange() method.

因此，而不是 restTemplate.getForObject（url，String.class ，$ pa $）$ / code>（没有头文件），使用

So instead of restTemplate.getForObject(url, String.class, param) (which has no headers), use

HttpHeaders headers = new HttpHeaders();
headers.set("Header", "value");
headers.set("Other-Header", "othervalue");
...

HttpEntity entity = new HttpEntity(headers);

ResponseEntity<String> response = restTemplate.exchange(
    url, HttpMethod.GET, entity, String.class, param);

最后，使用 response.getBody（）以获得您的结果。

Finally, use response.getBody() to get your result.

这个问题类似于这个问题。

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