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RestTemplate.exchange各种用法(包括泛型等 --全)
在我们日常开发中,无论是内部服务之间的调用,还是调用第三方服务,都免不了发起Http请求,在Java中发起Http请求常见的方式大致有原生HttpURLConnection、Apache的HttpClient、Spring的RestTemplate等,如果您基于Spring框架,那么强烈推荐使用RestTemplate,理由很简单:非常符合我们发起http请求的习惯,就像使用postman,只需要关心具体的url、header、body等即可,对于繁琐的细节RestTemplate都帮我们安排(封装)的明明白白,无关的细节我们统统不用操心! 尤其是RestTemplate.exchange方法,可以称的上是单靠一招就可以吊打其它方式。。。 所以本文就来详细介绍一下RestTemplate.exchange各种用法,力求覆盖日常开发中的各种场景,Let’s start~~ exchange有多个重载,我们常用的掌握以下这两个就够了: responseType是Class<T> 源码截图: <T> ResponseEntity<T> exchange(String url ,...
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