REST stands for representational state transfer whereas SOAP stands for Simple Object Access Protocol. SOAP defines its own security where as REST inherits security from the underlying transport. SOAP does not support error handling, but REST has built-in error handling. REST is lightweight and does not require XML parsing. REST can be consumed by any client, even a web browser with Ajax and JavaScript. REST consumes less bandwidth, it does not require a SOAP header for every message. REST is useful over any protocol which provide a URI. Ignore point 5 for REST as mentioned below in the picture.

休息vs.肥皂

SOAP:

SOAP是运行在TCP/UDP/SMTP上的简单对象访问协议。 SOAP以XML格式读取和写入请求响应消息。 SOAP使用接口来定义服务。 SOAP更安全，因为它有自己的安全性和定义良好的标准。 SOAP遵循RPC和文档风格来定义web服务。 SOAP使用SOAP- ui作为客户端工具进行测试。

REST

► REST is representational state transfer that uses underlying HTTP protocols. ► REST is stateless. ► REST is an architectural style that is used to describe and define web services. ► REST can read and write request response messages in JSON/XML/Plain HTML. ► REST uses URI for each resource that is used in web service.A resource can be image text method etc. ► REST uses set of verbs, like HTTP's GET, POST, PUT, DELETE. ► REST is easy to develop and easy to manage as compared to SOAP UI. ► REST has light-weight client tools or plugins that can easily be integrated inside a browser. ► REST services are cacheable.

REST几乎总是更快。SOAP的主要优点是它提供了一种机制，可以让服务向客户端描述自己，并宣传它们的存在。

REST轻量级得多，几乎可以使用任何工具实现，从而降低带宽，缩短学习曲线。然而，客户端必须知道要发送什么以及期望发送什么。

通常，当您向外界发布复杂或可能更改的API时，SOAP将更有用。除此之外，REST通常是更好的选择。

REST没有WSDL (Web描述语言)接口定义。 REST基于HTTP，但SOAP可以基于任何传输协议，如HTTP、FTP、SMTP、JMS等。

REST stands for representational state transfer whereas SOAP stands for Simple Object Access Protocol. SOAP defines its own security where as REST inherits security from the underlying transport. SOAP does not support error handling, but REST has built-in error handling. REST is lightweight and does not require XML parsing. REST can be consumed by any client, even a web browser with Ajax and JavaScript. REST consumes less bandwidth, it does not require a SOAP header for every message. REST is useful over any protocol which provide a URI. Ignore point 5 for REST as mentioned below in the picture.

SOAP web服务总是执行POST操作，而使用REST，您可以选择特定的HTTP方法，如GET、POST、PUT和DELETE。

例如:要使用SOAP获取一个项目，您应该创建一个请求XML，但是在REST的情况下，您可以在URL本身中指定项目id。