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This article introduces the relevant knowledge of "how to use RestTemplate". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

RestTemplate is a tool for remote access to Http interface based on HttpClient encapsulation.

It is very easy to use. A common mistake is generic conversion.

Suppose Service A has an interface:

Http://************************************e/getChildGroupName

The type of return value is as follows:

ServiceResponse

The error is written as follows:

/ / return restTemplate// .getForObject (childGroupNameUrl + "? childGroupId=" + childGroupId, ServiceResponse.class)

This way of writing cannot cast a type to produce a LInkedHashMap

Write it correctly as follows

Return restTemplate. Exchange (childGroupNameUrl + "? childGroupId=" + childGroupId, HttpMethod.GET, null, new ParameterizedTypeReference () {}). GetBody (); this is the end of the introduction of "how to use RestTemplate". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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