使用spring构建一个RESTFul接口

1、构建一个RESTFul接口

rest-service

要点：引入web依赖，web自带jackson依赖，spring支持json数据的反转（使用jackson2），反转实现类（MappingJackson2HttpMessageConverter ） @RestController是一个组合注解类

@SpringBootApplication is a convenience annotation that adds all of the following:

@Configuration: Tags the class as a source of bean definitions for the application context.

@EnableAutoConfiguration: Tells Spring Boot to start adding beans based on classpath settings, other beans, and various property settings. For example, if spring-webmvc is on the classpath, this annotation flags the application as a web application and activates key behaviors, such as setting up a DispatcherServlet.

@ComponentScan: Tells Spring to look for other components, configurations, and services in the com/example package, letting it find the controllers.

2、消费一个RESTFul接口

consuming-rest

使用spring resttemplate取回对应的数据，创建对应的领域类，领域类的字段和rest接口返回的字段不一样的时候，使用@JsonProperty注解注释字段；当接口返回字段多的时候，使用@JsonIgnoreProperties(ignoreUnknown = true)注释类，自动忽略多的字段。