SOAP Web服务:

如果您的应用程序需要有保证的可靠性和安全性级别，那么SOAP将提供额外的标准来确保这种类型的操作。 如果双方(服务提供者和服务使用者)必须就交换格式达成一致，那么SOAP将为这种类型的交互提供严格的规范。

RestWeb服务:

完全无状态操作:用于无状态的CRUD(创建、读取、更新和删除)操作。 缓存情况:如果信息需要缓存。

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。

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.

SOAP Web服务:

如果您的应用程序需要有保证的可靠性和安全性级别，那么SOAP将提供额外的标准来确保这种类型的操作。 如果双方(服务提供者和服务使用者)必须就交换格式达成一致，那么SOAP将为这种类型的交互提供严格的规范。

RestWeb服务:

完全无状态操作:用于无状态的CRUD(创建、读取、更新和删除)操作。 缓存情况:如果信息需要缓存。

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.

REST和SOAP的区别: