Web Service和获取post/get返回数据有什么区别？
通过获取post/get的值来直接返回数据和Web Service有什么区别？二者有何优劣？
假设做一个简单的API：
get提交userid和type，获取这两个值后判断userid是否存在数据库中，如果存在则根据type来返回数据。
这个API用上述两种中的哪种方式实现更好？
------解决方案--------------------
从获取数据的角度讲：都一样
都是提供数据的服务
不同的是：Web Service 提供的是公共数据服务，通过 wsdl 来约定传入传出的数据格式和方法
post/get 提供的是私有服务，数据格式有你们私下约定
------解决方案--------------------
补充一下
如果是给自己的网站开发 API，我建议你用 REST。当然站内使用也是 REST
这样在你需要的时候公开相应的 REST 串就可以了，无需再单独开发 API
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