SpringCloud中Rest微服务构建（下）

1.Consumer模块的创建

pom.xml文件编写：

2. <?xml version=”1.0″ encoding=”UTF-8″?>

4. <project xmlns=”http://maven.apache.org/POM/4.0.0″

6. xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”

8. xsi:schemaLocation=”http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd”>

10. <parent>

12. <artifactId>springcloud</artifactId>

14. <groupId>com.csh</groupId>

16. <version>1.0-SNAPSHOT</version>

18. </parent>

20. <modelVersion>4.0.0</modelVersion>

21. <artifactId>springcloud-consumer-dept-80</artifactId>

22. <dependencies>

24. <dependency>

26. <groupId>com.csh</groupId>

28. <artifactId>springcloudapi</artifactId>

30. <version>1.0-SNAPSHOT</version>

32. </dependency>

33. <dependency>

35. <groupId>org.springframework.boot</groupId>

37. <artifactId>spring-boot-starter-web</artifactId>

39. </dependency>

40. <dependency>

42. <groupId>org.springframework.cloud</groupId>

44. <artifactId>spring-cloud-starter-ribbon</artifactId>

46. <version>1.4.7.RELEASE</version>

48. </dependency>

50. <dependency>

52. <groupId>org.springframework.cloud</groupId>

54. <artifactId>spring-cloud-starter-config</artifactId>

56. </dependency>

57. <dependency>

59. <groupId>org.springframework.cloud</groupId>

61. <artifactId>spring-cloud-starter-eureka</artifactId>

63. <version>1.4.7.RELEASE</version>

65. </dependency>

66. <dependency>

68. <groupId>org.springframework.boot</groupId>

70. <artifactId>spring-boot-devtools</artifactId>

72. </dependency>

74. </dependencies>

75. <properties>

77. <maven.compiler.source>8</maven.compiler.source>

79. <maven.compiler.target>8</maven.compiler.target>

81. </properties>

82. </project>

application.yml文件编写

2. server:

4. port: 80

新建一个CONFIGBEAN包注入 RESTTEMPLATE！

2. package com.csh.springcloud.config;

3. import org.springframework.cloud.client.loadbalancer.LoadBalanced;

5. import org.springframework.context.annotation.Bean;

7. import org.springframework.context.annotation.Configuration;

9. import org.springframework.web.client.RestTemplate;

10. @Configuration

12. public class ConfigBean {

13. @Bean

15. @LoadBalanced

17. public RestTemplate getrestTemplate()

19. {

21. return new RestTemplate() ;}

23. }

创建CONTROLLER包，编写DEPTCONSUMERCONTROLLER类

2. package com.csh.springcloud.controller;

3. import com.csh.springcloud.pojo.Dept;

5. import org.springframework.beans.factory.annotation.Autowired;

7. import org.springframework.web.bind.annotation.PathVariable;

9. import org.springframework.web.bind.annotation.RequestMapping;

11. import org.springframework.web.bind.annotation.RestController;

13. import org.springframework.web.client.RestTemplate;

14. import java.util.List;

15. @RestController

17. public class DeptComsumerController {

18. @Autowired

20. RestTemplate restTemplate;

21. private static final String REST_URL_PREFIX=”http://localhost:8001″;

22. @RequestMapping(“/consumer/dept/add”)

24. public boolean add(Dept dept)

26. {

28. return restTemplate.getForObject(REST_URL_PREFIX+”/dept/add”,boolean.class);

30. }

31. @RequestMapping(“/consumer/dept/get/{id}”)

33. public Dept getbyid(@PathVariable(“id”) int id)

35. {

37. return restTemplate.getForObject(REST_URL_PREFIX+”/dept/find/”+id,Dept.class);

39. }

40. @RequestMapping(“/consumer/dept/list”)

42. public List<Dept> list()

44. {

46. return restTemplate.getForObject(REST_URL_PREFIX+”/dept/selectall”,List.class);

48. }

50. }

RestTemplate提供了多种便捷访问远程Http服务的方法，是一种简单便捷的访问restful服务模板
类，是Spring提供的用于访问Rest服务的客户端模板工具集
使用RestTemplate访问restful接口非常的简单粗暴且无脑
（url，requsetMap，ResponseBean.class） 这三个参数分别代表REST请求地址，请求参数，
Http响应转换 被 转换成的对象类型

编写主启动类

2. package com.csh.springcloud;

3. import org.springframework.boot.SpringApplication;

5. import org.springframework.boot.autoconfigure.SpringBootApplication;

7. import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

8. @EnableEurekaClient

10. @SpringBootApplication

12. public class Springcloudconsumer80 {

14. public static void main(String[] args) {

16. SpringApplication.run(Springcloudconsumer80.class,args);

18. }

20. }

2.访问测试