[Spring cloud 一步步实现广告系统] 10. Ribbon 服务调用

在使用Ribbon调用广告投放系统API之前，我们需要先创建2个VO对象，AdPlanVO,AdPlanGetRequestVO.

//数据请求对象@Data@NoArgsConstructor@AllArgsConstructorpublic class AdPlanGetRequestVO {    private Long userId;    private List<Long> planIds;}---------------------------------- //API请求响应结果反序列化对象@Data@AllArgsConstructor@NoArgsConstructorpublic class AdPlanVO {    private Long planId;    private Long userId;    private String planName;    private Integer planStatus;    private Date startDate;    private Date endDate;    private Date createTime;    private Date updateTime;}

在AdSearchApplication启动类中，添加RestTemplate客户端。

public class AdSearchApplication {  ...    /**     * 注册{@  RestTemplate}Bean     * @return     */    @Bean    @LoadBalanced //让RestTemplate在调用服务的时候，可以实现负载均衡    RestTemplate restTemplate(){        return new RestTemplate();    }}

创建一个controller，来测试调用广告提供系统的API

/** * SearchController for search information controller * * @author <a href="mailto:magicianisaac@gmail.com">Isaac.Zhang | 若初</a> */@RestController@Slf4j@RequestMapping(path = "/search")public class SearchController {      //注入RestTemplate    private final RestTemplate restTemplate;    @Autowired    public SearchController(RestTemplate restTemplate) {        this.restTemplate = restTemplate;    }    @GetMapping(path = "/plan/get-ribbon")    public CommonResponse<List<AdPlanVO>> getAdPlansUseRibbon(@RequestBody AdPlanGetRequestVO requestVO) {        log.info("ad-search::getAdPlansUseRibbon -> {}", JSON.toJSONString(requestVO));        return restTemplate.postForEntity(                "http://mscx-ad-sponsor/ad-sponsor/plan/get", requestVO, CommonResponse.class        ).getBody();    }    @GetMapping(path = "/user/get")    public CommonResponse getUsers(@Param(value = "username") String username) {        log.info("ad-search::getUsers -> {}", JSON.toJSONString(username));        CommonResponse commonResponse = restTemplate.getFor (                "http://mscx-ad-sponsor/ad-sponsor/user/get?username={username}", CommonResponse.class, username        );        return commonResponse;    }}