8.12 SpringBoot集成ElasticSearch之拦截器

1.简介
eBatis中拦截器的加载通过SPI方式实现，只需要提供的目标类实现io.manbang.ebatis.core.interceptor.Interceptor接口，在目标类上加上注解@AutoService(Interceptor.class)，由auto-service生成。

2.interceptor开发
在项目目录“/src/main/java/com/example/es”下新建interceptor目录，并在interceptor目录下新建EmployeeInterceptor类，EmployeeInterceptor类需要实现Interceptor接口，具体代码如下。

@Slf4j
@AutoService(Interceptor.class)
public class EmployeeInterceptor implements Interceptor {
    @Override
    public int getOrder() {
        return 0;
    }

    @Override
    public void handleException(Throwable throwable) {
        log.error("throwable:{}", throwable);
    }

    @Override
    public <T extends ActionRequest> void postRequest(RequestInfo<T>) {
        log.info("requestInfo1:{}", requestInfo);
        log.info("requestInfo2:{}", requestInfo.actionRequest());
        log.error("requestInfo employeeId:{}", ContextHolder.getString("employeeId"));
    }

    @Override
    public <T extends ActionRequest> void preResponse(PreResponseInfo<T>) {
        log.error("preResponseInfo employeeId:{}", ContextHolder.getString("employeeId"));
    }

    @Override
    public <T extends ActionRequest, R extends ActionResponse> void postResponse(PostResponseInfo<T, R>) {
        log.info("postResponseInfo:{}", postResponseInfo.actionResponse());
        log.error("postResponseInfo employeeId:{}", ContextHolder.<String>getValue("employeeId"));
    }
}

3.测试
启动项目，然后在postman中请求“http://localhost:8080/employee/queryEmployeePage”，成功后可在控制台输出如下的信息。