学成在线-第15天-讲义-媒资管理系统集成四
作者:互联网
3 在线学习接口
3.1 需求分析
根据下边的业务流程,本章节完成前端学习页面请求学习服务获取课程视频地址,并自动播放视频。
3.2 搭建开发环境
3.2.1 创建数据库
创建xc_learning数据库,学习数据库将记录学生的选课信息、学习信息。
导入:资料/xc_learning.sql
3.2.2 创建学习服务工程
参考课程管理服务工程结构,创建学习服务工程:
<dependencies>
<!‐‐ 导入Eureka服务的依赖 ‐‐>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring‐cloud‐starter‐netflix‐eureka‐client</artifactId>
</dependency>
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring‐cloud‐starter‐openfeign</artifactId>
</dependency>
<dependency>
<groupId>com.netflix.feign</groupId>
<artifactId>feign‐okhttp</artifactId>
<version>8.18.0</version>
</dependency>
<dependency>
<groupId>com.xuecheng</groupId>
<artifactId>xc‐service‐api</artifactId>
<version>1.0‐SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.xuecheng</groupId>
<artifactId>xc‐framework‐model</artifactId>
<version>1.0‐SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.xuecheng</groupId>
<artifactId>xc‐framework‐utils</artifactId>
<version>1.0‐SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.xuecheng</groupId>
<artifactId>xc‐framework‐common</artifactId>
<version>1.0‐SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring‐boot‐starter‐web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql‐connector‐java</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid‐spring‐boot‐starter</artifactId>
<version>1.1.10</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis‐spring‐boot‐starter</artifactId>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper‐spring‐boot‐starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring‐orm</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring‐boot‐starter‐data‐jpa</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
</dependency>
<dependency>
<groupId>commons‐io</groupId>
<artifactId>commons‐io</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons‐lang3</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring‐boot‐starter‐test</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring‐boot‐starter‐amqp</artifactId>
</dependency>
</dependencies>
server:
port: ${PORT:40600}
spring:
application:
name: xc‐service‐learning
datasource:
druid:
url: ${MYSQL_URL:jdbc:mysql://localhost:3306/xc_learning?characterEncoding=utf‐8}
username: root
password: mysql
driverClassName: com.mysql.jdbc.Driver
initialSize: 5 #初始建立连接数量
minIdle: 5 #最小连接数量
maxActive: 20 #最大连接数量
maxWait: 10000 #获取连接最大等待时间,毫秒
testOnBorrow: true #申请连接时检测连接是否有效
testOnReturn: false #归还连接时检测连接是否有效
timeBetweenEvictionRunsMillis: 60000 #配置间隔检测连接是否有效的时间(单位是毫秒)
minEvictableIdleTimeMillis: 300000 #连接在连接池的最小生存时间(毫秒)
eureka:
client:
registerWithEureka: true #服务注册开关
fetchRegistry: true #服务发现开关
serviceUrl: #Eureka客户端与Eureka服务端进行交互的地址,多个中间用逗号分隔
defaultZone: ${EUREKA_SERVER:http://localhost:50101/eureka/}
instance:
prefer‐ip‐address: true #将自己的ip地址注册到Eureka服务中
ip‐address: ${IP_ADDRESS:127.0.0.1}
instance‐id: ${spring.application.name}:${server.port} #指定实例id
ribbon:
MaxAutoRetries: 2 #最大重试次数,当Eureka中可以找到服务,但是服务连不上时将会重试,如果eureka中找不
到服务则直接走断路器
MaxAutoRetriesNextServer: 3 #切换实例的重试次数
OkToRetryOnAllOperations: false #对所有操作请求都进行重试,如果是get则可以,如果是post,put等操作
没有实现幂等的情况下是很危险的,所以设置为false
ConnectTimeout: 5000 #请求连接的超时时间
ReadTimeout: 6000 #请求处理的超时时间
启动类:
@EnableDiscoveryClient
@EnableFeignClients
@SpringBootApplication
@EntityScan("com.xuecheng.framework.domain.learning")//扫描实体类
@ComponentScan(basePackages={"com.xuecheng.api"})//扫描接口
@ComponentScan(basePackages={"com.xuecheng.learning"})//扫描接口
@ComponentScan(basePackages={"com.xuecheng.framework"})//扫描common下的所有类
public class LearningApplication {
public static void main(String[] args) throws Exception {
SpringApplication.run(LearningApplication.class, args);
}
@Bean
@LoadBalanced
public RestTemplate restTemplate() {
return new RestTemplate(new OkHttp3ClientHttpRequestFactory());
}
}
3.3 Api接口
此api接口是课程学习页面请求学习服务获取课程学习地址。
定义返回值类型:
@Data
@ToString
@NoArgsConstructor
public class GetMediaResult extends ResponseResult {
public GetMediaResult(ResultCode resultCode, String fileUrl) {
super(resultCode);
this.fileUrl = fileUrl;
}
//媒资文件播放地址
private String fileUrl;
}
定义接口,学习服务根据传入课程ID、章节Id(课程计划ID)来取学习地址。
@Api(value = "录播课程学习管理",description = "录播课程学习管理")
public interface CourseLearningControllerApi {
@ApiOperation("获取课程学习地址")
public GetMediaResult getmedia(String courseId,String teachplanId);
}
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标签:学成,15,xuecheng,spring,boot,媒资,org,com,starter 来源: https://blog.csdn.net/qq_40208605/article/details/104206946