如何在Spring RestTemplate中从对象获取列表 [英] How to get List from Object in Spring RestTemplate

问题描述

如何从对象获取列表?在下面可以找到我的代码:

How to get List from Object? Below you can find my code:

ResponseEntity<Object> responseEntity = restTemplate.getForEntity("localhost:8083/connectors/", Object.class);
Object object = responseEntity.getBody();

实际上，对象变量是Objects(Strings)的列表，我需要获取所有这些Strings.

Actually object variable is a List of Objects(Strings) and I need to get all these Strings.

如果我将其打印出System.out.println(object.toString());，它看起来像这样:

If I print it out System.out.println(object.toString()); it looks like that:

[objvar, values, test, object, servar, larms, aggregates, sink, records]

我需要获取这些字符串的列表才能动态使用它.你能帮忙吗?

I need to get List of these Strings to dynamic use it. Could you please help?

推荐答案

尝试一下.这应该工作.

Try this out. This should work.

ResponseEntity<String[]> responseEntity = restTemplate.getForEntity("localhost:8083/connectors/", String[].class);
List<String> object = Arrays.asList(responseEntity.getBody());

在简单的情况下，上面的代码有效，但是当您要映射复杂的json结构时，最好使用ParameterizedTypeReference.

For simple cases the code above works, but when you have complex json structures which you want to map, then it is ideal to use ParameterizedTypeReference.

ResponseEntity<List<String>> responseEntity =
        restTemplate.exchange("localhost:8083/connectors/",
            HttpMethod.GET, null, new ParameterizedTypeReference<List<String>>() {
            });
List<String> listOfString = responseEntity.getBody();

这篇关于如何在Spring RestTemplate中从对象获取列表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！