页面发布
技术方案
本项目使用MQ实现页面发布的技术方案如下:
技术方案说明:
- 平台包括多个站点,页面归属不同的站点。
- 发布一个页面应将该页面发布到所属站点的服务器上。
- 每个站点服务部署cms client程序,并与交换机绑定,绑定时指定站点Id为routingKey。指定站点id为routingKey就可以实现cms client只能接收到所属站点的页面发布消息。
- 页面发布程序向MQ发布消息时指定页面所属站点Id为routingKey,将该页面发布到它所在服务器上的cms client。
页面发布流程图如下:
- 前端请求cms执行页面发布。
- cms执行静态化程序生成html文件。
- cms将html文件存储到GridFS中。
- cms向MQ发送页面发布消息。
- MQ将页面发布消息通知给Cms Client。
- Cms Client从GridFS中下载html文件。
- Cms Client将html保存到所在服务器指定目录。
页面发布消费方
需求
功能分析:
创建Cms Client
工程作为页面发布消费方,将Cms Client
部署在多个服务器上,它负责接收到页面发布的消息后从GridFS
中下载文件在本地保存。
需求如下:
- 将cms Client部署在服务器,配置队列名称和站点ID。
- cms Client连接RabbitMQ并监听各自的“页面发布队列”。
- cms Client接收页面发布队列的消息。
- 根据消息中的页面id从mongodb数据库下载页面到本地。
工程搭建省略
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>xc-framework-parent</artifactId>
<groupId>com.xuecheng</groupId>
<version>1.0-SNAPSHOT</version>
<relativePath>../xc-framework-parent/pom.xml</relativePath>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>xc-service-manage-cms-client</artifactId>
<dependencies>
<dependency>
<groupId>com.xuecheng</groupId>
<artifactId>xc-framework-model</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
</dependency>
</dependencies>
</project>
配置文件
server:
port: 31000
spring:
application:
name: xc-service-manage-cms-client
data:
mongodb:
database: xc_cms
host: 127.0.0.1
port: 27017
rabbitmq:
host: 127.0.0.1
port: 5672
username: xcEdu
password: 123456
virtualHost: /
xuecheng:
mq:
# cms客户端监控的队列名称(不同的客户端监控的队列不能重复)
queue: queue_cms_postpage_01
# 此routingKey为门户站点ID
routingKey: 5a751fab6abb5044e0d19ea1
启动类
package com.xuecheng.cms_manage_client;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.context.annotation.ComponentScan;
@SpringBootApplication
@EntityScan(basePackages = "com.xuecheng.framework.domain.cms")
@ComponentScan(basePackages = "com.xuecheng.framework")
@ComponentScan(basePackages = "com.xuecheng.cms_manage_client")
public class ManageCmsClientApplication {
public static void main(String[] args) {
SpringApplication.run(ManageCmsClientApplication.class, args);
}
}
RabbitmqConfig(配置类)
package com.xuecheng.cms_manage_client.config;
import org.springframework.amqp.core.*;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class RabbitmqConfig {
//队列bean的名称
public static final String QUEUE_CMS_POSTPAGE = "queue_cms_postpage";
//交换机的名称
public static final String EX_ROUTING_CMS_POSTPAGE = "ex_routing_cms_postpage";
//队列的名称
@Value("${xuecheng.mq.queue}")
public String queue_cms_postpage_name;
//routingKey 即站点Id
@Value("${xuecheng.mq.routingKey}")
public String routingKey;
/**
* 交换机配置使用direct类型
*
* @return the exchange
*/
@Bean(EX_ROUTING_CMS_POSTPAGE)
public Exchange EXCHANGE_TOPICS_INFORM() {
return ExchangeBuilder.directExchange(EX_ROUTING_CMS_POSTPAGE).durable(true).build();
}
//声明队列
@Bean(QUEUE_CMS_POSTPAGE)
public Queue QUEUE_CMS_POSTPAGE() {
Queue queue = new Queue(queue_cms_postpage_name);
return queue;
}
/**
* 绑定队列到交换机
*
* @param queue the queue
* @param exchange the exchange
* @return the binding
*/
@Bean
public Binding BINDING_QUEUE_INFORM_SMS(@Qualifier(QUEUE_CMS_POSTPAGE) Queue queue,
@Qualifier(EX_ROUTING_CMS_POSTPAGE) Exchange exchange) {
return BindingBuilder.bind(queue).to(exchange).with(routingKey).noargs();
}
}
Dao
数据访问代码参考xc-service-manage-cms
中的dao
,直接复制即可
PageService
package com.xuecheng.cms_manage_client.service;
import com.mongodb.client.gridfs.GridFSBucket;
import com.mongodb.client.gridfs.GridFSDownloadStream;
import com.mongodb.client.gridfs.model.GridFSFile;
import com.xuecheng.cms_manage_client.dao.CmsPageRepository;
import com.xuecheng.cms_manage_client.dao.CmsSiteRepository;
import com.xuecheng.framework.domain.cms.CmsPage;
import com.xuecheng.framework.domain.cms.response.CmsCode;
import com.xuecheng.framework.exception.ExceptionCast;
import com.xuecheng.framework.service.BaseService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.gridfs.GridFsResource;
import org.springframework.data.mongodb.gridfs.GridFsTemplate;
import org.springframework.stereotype.Service;
import java.io.*;
import java.util.Optional;
@Slf4j
@Service
public class PageService extends BaseService {
@Autowired
private GridFSBucket gridFSBucket;
@Autowired
private GridFsTemplate gridFsTemplate;
@Autowired
private CmsPageRepository cmsPageRepository;
@Autowired
private CmsSiteRepository cmsSiteRepository;
/**
* 保存指定页面ID的html到服务器
*
* @param pageId 页面ID
*/
public void savePageToServerPath(String pageId) {
CmsPage cmsPage = null;
// 查询CmsPage
Optional<CmsPage> optionalCmsPage = cmsPageRepository.findById(pageId);
if (!optionalCmsPage.isPresent()) {
ExceptionCast.cast(CmsCode.CMS_EDITPAGE_NOTEXISTS);
}
cmsPage = optionalCmsPage.get();
// 下载文件
InputStream inputStream = downloadFileFromMongoDB(cmsPage.getHtmlFileId());
if (inputStream == null) {
log.error("[页面发布消费方] 下载页面失败, 流对象为null, fileId = [{}]", cmsPage.getHtmlFileId());
return ;
}
// 写入文件
FileOutputStream fileOutputStream = null;
try {
fileOutputStream = new FileOutputStream(new File(cmsPage.getPagePhysicalPath() + cmsPage.getPageName()));
IOUtils.copy(inputStream, fileOutputStream);
} catch (FileNotFoundException e) {
log.error("[页面发布消费方] 文件未找到, 文件路径 = [{}]", cmsPage.getPagePhysicalPath() + cmsPage.getPageName());
} catch (IOException e) {
log.error("[页面发布消费方] 将文件写入服务器失败, 文件路径 = [{}]", cmsPage.getPagePhysicalPath() + cmsPage.getPageName());
} finally {
try {
if (fileOutputStream != null) {
fileOutputStream.close();
}
inputStream.close();
} catch (IOException e) {
log.error("[页面发布消费方] 流对象关闭失败, 错误信息 = ", e);
}
}
}
/**
* 下载文件
*
* @param fileId 文件ID
* @return 文件内容
*/
private InputStream downloadFileFromMongoDB(String fileId) {
GridFSFile gridFSFile = gridFsTemplate.findOne(Query.query(Criteria.where("_id").is(fileId)));
if (gridFSFile == null) {
ExceptionCast.cast(CmsCode.CMS_GENERATEHTML_TEMPLATEISNULL);
}
//打开下载流对象
GridFSDownloadStream gridFSDownloadStream = gridFSBucket.openDownloadStream(gridFSFile.getObjectId());
//创建gridFsResource
GridFsResource gridFsResource = new GridFsResource(gridFSFile,gridFSDownloadStream);
//获取流中的数据
try {
return gridFsResource.getInputStream();
} catch (IOException ignored) { }
return null;
}
}
**注意:**我使用的这一版本的数据库中cms_site
中没有物理路径这一字段,但是在cms_page
中的物理字段使用的是绝对路径,所以我这里直接使用的cms_page
中的物理路径。
ConsumerPostPage
编写页面发布消费方代码
package com.xuecheng.cms_manage_client.mq;
import com.alibaba.fastjson.JSON;
import com.xuecheng.cms_manage_client.dao.CmsPageRepository;
import com.xuecheng.cms_manage_client.service.PageService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import java.util.Map;
@Slf4j
@Component
public class ConsumerPostPage {
@Autowired
private CmsPageRepository cmsPageRepository;
@Autowired
private PageService pageService;
@RabbitListener(queues = {"${xuecheng.mq.queue}"})
public void postPage(String msg) {
// 解析消息
Map map = JSON.parseObject(msg, Map.class);
log.info("[页面发布消费方] 收到消息, 消息内容为: [{}]", map.toString());
// 获取pageId
String pageId = (String) map.get("pageId");
if (StringUtils.isBlank(pageId)) {
log.error("[页面发布消费方] 收到的pageId为空");
return ;
}
// 下载页面到服务器
pageService.savePageToServerPath(pageId);
}
}
页面发布生产方
需求
管理员通过cms系统发布“页面发布”的消费,cms系统作为页面发布的生产方。
需求如下:
- 管理员进入管理界面点击“页面发布”,前端请求cms页面发布接口。
- cms页面发布接口执行页面静态化,并将静态化页面存储至GridFS中。
- 静态化成功后,向消息队列发送页面发布的消息。
- 获取页面的信息及页面所属站点ID。
- 设置消息内容为页面ID。(采用json格式,方便日后扩展)
- 发送消息给ex_cms_postpage交换机,并将站点ID作为routingKey。
RabbitMQ配置
在xc-service-manage-cms
工程中,进行下列配置:
-
引入依赖(若没有引入amqp的依赖,则需要引入)
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId> </dependency>
-
application.yml中新增Rabbitmq相关配置
spring: rabbitmq: host: 127.0.0.1 port: 5672 # 此账号是我自行创建的,也可以直接使用默认账号:guest username: xcEdu password: 123456 virtualHost: /
-
RabbitMQ配置类
package com.xuecheng.manage_cms.config; import org.springframework.amqp.core.Exchange; import org.springframework.amqp.core.ExchangeBuilder; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; @Configuration public class RabbitmqConfig { //交换机的名称 public static final String EX_ROUTING_CMS_POSTPAGE = "ex_routing_cms_postpage"; /** * 交换机配置使用direct类型 * * @return the exchange */ @Bean(EX_ROUTING_CMS_POSTPAGE) public Exchange EXCHANGE_TOPICS_INFORM() { return ExchangeBuilder.directExchange(EX_ROUTING_CMS_POSTPAGE).durable(true).build(); } }
CmsPageControllerApi
在CmsPageControllerApi
中新增接口定义
@ApiOperation("页面发布")
ResponseResult postPage(String pageId);
CmsPageController
/**
* 页面发布
*
* @param pageId 页面ID
*/
@Override
@GetMapping("post/{pageId}")
public ResponseResult postPage(@PathVariable String pageId) {
return cmsPageService.postPage(pageId);
}
CmsPageService
@Autowired
private RabbitTemplate rabbitTemplate;
/**
* 页面发布
*
* @param pageId 页面ID
*/
@Transactional
public CmsPageResult postPage(String pageId) {
// 执行静态化
String htmlContent = genHtml(pageId);
isNullOrEmpty(htmlContent, CmsCode.CMS_GENERATEHTML_HTMLISNULL);
// 保存页面
CmsPage cmsPage = saveHtml(pageId, htmlContent);
// 发送消息到MQ
sendMessage(cmsPage.getPageId());
}
/**
* 发送消息到MQ
*
* @param pageId 页面ID
*/
private void sendMessage(String pageId) {
// 查询CmsPage
CmsPage cmsPage = findByPageId(pageId);
isNullOrEmpty(cmsPage, CmsCode.CMS_EDITPAGE_NOTEXISTS);
// 构造消息
JSONObject message = new JSONObject();
message.put("pageId", pageId);
// 发送消息
rabbitTemplate.convertAndSend(RabbitmqConfig.EX_ROUTING_CMS_POSTPAGE, cmsPage.getSiteId(), message.toJSONString());
}
/**
* 保存静态页面
*
* @param pageId 页面ID
* @param htmlContent 页面内容
*/
private CmsPage saveHtml(String pageId, String htmlContent) {
// 查询CmsPage
CmsPage cmsPage = findByPageId(pageId);
isNullOrEmpty(cmsPage, CmsCode.CMS_EDITPAGE_NOTEXISTS);
// 删除原有html文件
String htmlFileId = cmsPage.getHtmlFileId();
if(StringUtils.isNotEmpty(htmlFileId)){
gridFsTemplate.delete(Query.query(Criteria.where("_id").is(htmlFileId)));
}
// 保存生成的html
InputStream inputStream = IOUtils.toInputStream(htmlContent);
ObjectId objectId = gridFsTemplate.store(inputStream, cmsPage.getPageName());
// 保存文件ID到CmsPage
cmsPage.setHtmlFileId(objectId.toString());
return cmsPageRepository.save(cmsPage);
}
前端
用户操作流程:
- 用户进入cms页面列表。
- 点击“发布”请求服务端接口,发布页面。
- 提示“发布成功”,或发布失败。
代码实现如下
-
cms.js
中新增接口定义/** * 页面发布 */ export const postPage = (pageId) => { return http.requestQuickGet(apiUrl + '/cms/page/post/'+ pageId) }
-
在
page_list.vue
中新增发布
按钮,与页面预览
按钮类似<el-button size="small" type="text" @click="postPage(scope.$index, scope.row)">发布 </el-button>
-
在
page_list.vue
的方法区中,新增postPage
方法,用于调用页面发布接口postPage:function(index, data) { this.$confirm('确认发布此页面?', '提示', { confirmButtonText: '确定', cancelButtonText: '取消', type: 'warning' }).then(() => { // 页面发布 cmsApi.postPage(data.pageId).then(res => { // 提示消息 this.$message({ showClose: true, message: res.message, type: 'success' }) }) }) }
测试
-
设置页面信息
-
点击发布
-
查看是否生成文件
OK,文件成功发布并保存。
课程管理
微服务工程导入(省略)
前端工程导入排坑
我这里导入前端工程后,运行报错!!!
错误信息:
Node Sass does not yet support your current environment: Windows 64-bit with Unsupported runtime (64)
???what f**k
然后我去node-sass
的github看了下,好像也有蛮多人遇到类似问题的。
https://github.com/microsoft/PartsUnlimited/issues/134
解决方法:
-
使用
npm update
更新版本,需要注意从npm v2.6.1
开始,npm update
只更新顶层模块,而不更新依赖的模块,以前版本是递归更新的。如果想取到老版本的效果,要使用下面的命令npm --depth 9999 update
-
重新build一下
node-sass
npm rebuild node-sass
然后就可以直接:npm run dev
成功运行。
课程管理实现
分析
- 课程列表查询,该功能前端基本上没什么需要修改的地方了,直接写后端的分页查询接口即可。
- 课程的新增和编辑(重点),前端已经帮我把课程中的课程分类,适用等级以及学习模式的查询调用给我写好了,我们只需要完成响应接口的编写。
- 课程分类的查询比较简单,在课程微服务中
Category
表中就能够取到数据,结果只需要封装在CategoryNode
中即可。都是已经写好的实体类。 - 适用等级和学习模式查询,都在
mongodb
数据库中,也就是之前的CMS相关的数据库中,我们需要在CMS微服务中新增数据字典数据的查询,实体类分别是:SysDictionary
和SysDictionaryValue
- 编辑的时候,还需要数据的回显,这就需要完成查询。
- 课程分类的查询比较简单,在课程微服务中
数据字典查询实现
-
DictionaryController
package com.xuecheng.system.controller; import com.xuecheng.framework.domain.system.SysDictionary; import com.xuecheng.framework.model.response.CommonCode; import com.xuecheng.framework.web.BaseController; import com.xuecheng.system.service.DictionaryService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("sys/dictionary") public class DictionaryController extends BaseController { @Autowired private DictionaryService dictionaryService; /** * 按type获取数据字段值 * * @param type 数据类型 * @return SysDictionary */ @GetMapping("get/{type}") public SysDictionary getDictionaryByType(@PathVariable String type) { SysDictionary sysDictionary = dictionaryService.findByType(type); isNullOrEmpty(sysDictionary, CommonCode.PARAMS_ERROR); return sysDictionary; } }
-
DictionaryService
package com.xuecheng.system.service; import com.xuecheng.framework.domain.system.SysDictionary; import com.xuecheng.framework.service.BaseService; import com.xuecheng.manage_cms.dao.DictionaryRepository; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Slf4j @Service public class DictionaryService extends BaseService { @Autowired private DictionaryRepository dictionaryRepository; /** * 按type获取数据字段值 * * @param type 数据类型 * @return SysDictionary */ public SysDictionary findByType(String type) { return dictionaryRepository.findByDType(type); } }
-
DictionaryRepository
package com.xuecheng.manage_cms.dao; import com.xuecheng.framework.domain.system.SysDictionary; import org.springframework.data.mongodb.repository.MongoRepository; public interface DictionaryRepository extends MongoRepository<SysDictionary, String> { SysDictionary findByDType(String type); }
注意:
因为前端已经写好了接口调用而且调用的端口号是cms微服务对应端口号,所以如果不想修改前端的调用端口的话,建议直接将数据字典查询的代码写在cms微服务中。
课程管理实现
-
CourseController
package com.xuecheng.manage_course.controller; import com.xuecheng.api.course.CourseBaseControllerApi; import com.xuecheng.framework.domain.course.CourseBase; import com.xuecheng.framework.domain.course.request.CourseListRequest; import com.xuecheng.framework.domain.course.response.AddCourseResult; import com.xuecheng.framework.domain.course.response.CourseBaseResult; import com.xuecheng.framework.domain.course.response.CourseCode; import com.xuecheng.framework.model.response.CommonCode; import com.xuecheng.framework.model.response.QueryResponseResult; import com.xuecheng.framework.web.BaseController; import com.xuecheng.manage_course.service.CourseBaseService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; @RestController @RequestMapping("course/coursebase") public class CourseBaseController extends BaseController implements CourseBaseControllerApi { @Autowired private CourseBaseService courseBaseService; @Override @GetMapping("list/{page}/{size}") public QueryResponseResult findList(@PathVariable int page, @PathVariable int size, CourseListRequest queryPageRequest) { return courseBaseService.findList(page, size, queryPageRequest); } /** * 新增课程基本信息 * * @param courseBase 课程基本信息 */ @Override @PostMapping("add") public AddCourseResult addCourse(@RequestBody CourseBase courseBase) { isNullOrEmpty(courseBase, CommonCode.PARAMS_ERROR); CourseBase add = courseBaseService.add(courseBase); isNullOrEmpty(add, CommonCode.SERVER_ERROR); return new AddCourseResult(CommonCode.SUCCESS, add.getId()); } /** * 编辑课程基本信息 * * @param courseBase 课程基本信息 */ @Override @PutMapping("edit") public AddCourseResult editCourse(@RequestBody CourseBase courseBase) { isNullOrEmpty(courseBase, CommonCode.PARAMS_ERROR); courseBaseService.edit(courseBase); return null; } /** * 按课程ID查询课程基本信息 * * @param courseId */ @Override @GetMapping("{courseId}") public CourseBaseResult findById(@PathVariable String courseId) { isNullOrEmpty(courseId, CommonCode.PARAMS_ERROR); CourseBase courseBase = courseBaseService.findById(courseId); isNullOrEmpty(courseBase, CourseCode.COURSE_NOT_EXIST); return CourseBaseResult.SUCCESS(courseBase); } }
-
CourseBaseService
package com.xuecheng.manage_course.service; import com.xuecheng.framework.domain.course.CourseBase; import com.xuecheng.framework.domain.course.request.CourseListRequest; import com.xuecheng.framework.domain.course.response.CourseCode; import com.xuecheng.framework.model.response.CommonCode; import com.xuecheng.framework.model.response.QueryResponseResult; import com.xuecheng.framework.model.response.QueryResult; import com.xuecheng.framework.service.BaseService; import com.xuecheng.manage_course.dao.CourseBaseRepository; import lombok.extern.slf4j.Slf4j; import org.apache.commons.lang3.StringUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.domain.Example; import org.springframework.data.domain.Page; import org.springframework.data.domain.PageRequest; import org.springframework.stereotype.Service; @Slf4j @Service public class CourseBaseService extends BaseService { @Autowired private CourseBaseRepository courseBaseRepository; /** * 新增课程基本信息 * * @param courseBase 课程基本信息 * @return CourseBase */ public CourseBase add(CourseBase courseBase) { // 新增 return courseBaseRepository.save(courseBase); } /** * 编辑课程基本信息 * * @param courseBase 课程基本信息 * @return CourseBase */ public CourseBase edit(CourseBase courseBase) { CourseBase _courseBase = findById(courseBase.getId()); isNullOrEmpty(_courseBase, CourseCode.COURSE_NOT_EXIST); // 更新 _courseBase.setName(courseBase.getName()); _courseBase.setMt(courseBase.getMt()); _courseBase.setSt(courseBase.getSt()); _courseBase.setGrade(courseBase.getGrade()); _courseBase.setStudymodel(courseBase.getStudymodel()); _courseBase.setDescription(courseBase.getDescription()); return courseBaseRepository.save(_courseBase); } /** * 按ID查询课程基本信息 * * @param courseBaseId 课程ID * @return CourseBase */ public CourseBase findById(String courseBaseId) { return courseBaseRepository.findById(courseBaseId).orElse(null); } /** * 分页查询课程基本信息 * * @param page 当前页码 * @param size 每页记录数 * @param queryPageRequest 查询条件 * @return QueryResponseResult */ public QueryResponseResult findList(int page, int size, CourseListRequest queryPageRequest) { if (page < 0) { page = 1; } // 页码下标从0开始 page = page - 1; CourseBase params = new CourseBase(); if (StringUtils.isNotBlank(queryPageRequest.getCompanyId())) { params.setCompanyId(queryPageRequest.getCompanyId()); } Example<CourseBase> courseBaseExample = Example.of(params); // 分页查询 Page<CourseBase> pageResult = courseBaseRepository.findAll(courseBaseExample, PageRequest.of(page, size)); QueryResult<CourseBase> queryResult = new QueryResult<>(); queryResult.setTotal(pageResult.getTotalElements()); queryResult.setList(pageResult.getContent()); return new QueryResponseResult(CommonCode.SUCCESS, queryResult); } }
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CourseBaseRepository
package com.xuecheng.manage_course.dao; import com.xuecheng.framework.domain.course.CourseBase; import org.springframework.data.jpa.repository.JpaRepository; /** * Created by Administrator. */ public interface CourseBaseRepository extends JpaRepository<CourseBase,String> { }
分类列表查询
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CategoryController
package com.xuecheng.manage_course.controller; import com.xuecheng.api.course.CategoryControllerApi; import com.xuecheng.framework.domain.course.ext.CategoryNode; import com.xuecheng.framework.web.BaseController; import com.xuecheng.manage_course.service.CategoryService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("category") public class CategoryController extends BaseController implements CategoryControllerApi { @Autowired private CategoryService categoryService; /** * 查询分类列表 * * @return CategoryNode */ @Override @GetMapping("list") public CategoryNode findCategoryList() { return categoryService.findCategoryList(); } }
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CategoryService
package com.xuecheng.manage_course.service; import com.xuecheng.framework.domain.course.Category; import com.xuecheng.framework.domain.course.ext.CategoryNode; import com.xuecheng.manage_course.dao.CategoryRepository; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; import java.util.stream.Collectors; @Slf4j @Service public class CategoryService { @Autowired private CategoryRepository categoryRepository; /** * 查询分类列表 * * @return CategoryNode */ public CategoryNode findCategoryList() { CategoryNode sourceCategoryNode = buildCategoryNode(categoryRepository.findByParentid("0").get(0)); // 查询第二级分类列表 List<Category> secondaryCategoryList = categoryRepository.findByParentid(sourceCategoryNode.getId()); List<CategoryNode> secondaryCategoryNodeList = buildCategoryNodeList(secondaryCategoryList); sourceCategoryNode.setChildren(secondaryCategoryNodeList); return sourceCategoryNode; } /** * 构造分类节点列表 * * @param categoryList * @return List<CategoryNode> */ private List<CategoryNode> buildCategoryNodeList(List<Category> categoryList) { return categoryList.stream().map(secondaryCategory -> { CategoryNode categoryNode = buildCategoryNode(secondaryCategory); // 查询子节点 List<Category> children = categoryRepository.findByParentid(categoryNode.getId()); List<CategoryNode> categoryNodes = buildCategoryNodeList(children); if (!categoryNodes.isEmpty()) { categoryNode.setChildren(categoryNodes); } return categoryNode; }).collect(Collectors.toList()); } /** * 构造分类节点数据 * * @param category 分类 * @return CategoryNode */ private CategoryNode buildCategoryNode(Category category) { CategoryNode categoryNode = new CategoryNode(); categoryNode.setId(category.getId()); categoryNode.setIsleaf(category.getIsleaf()); categoryNode.setLabel(category.getLabel()); categoryNode.setName(category.getName()); return categoryNode; } }
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CategoryRepository
package com.xuecheng.manage_course.dao; import com.xuecheng.framework.domain.course.Category; import org.springframework.data.repository.CrudRepository; import java.util.List; public interface CategoryRepository extends CrudRepository<Category, String> { List<Category> findByParentid(String parentId); }
前端
前端基本没什么需要改动的地方,因为我在课程管理中,使用了自己新建的返回对象CourseBaseResult
,所以前端就需要改一点东西,费力不讨好啊,建议各位直接使用CourseBase
作为查询的返回值!
还有就是前端使用element-ui
版本,属实有点太低了,很多效果是出不来的,所以我进行了版本更换,我更换到2.10.1
之后,课程的新增和编辑页的头部导航菜单出现了样式错误,我修改了一下
修改之前,是用router-link
标签包裹的el-menu-item
标签。
基本就这些了。
课程计划
课程计划查询
CoursePlanController
package com.xuecheng.manage_course.controller;
import com.xuecheng.api.course.CoursePlanControllerApi;
import com.xuecheng.framework.domain.course.ext.TeachplanNode;
import com.xuecheng.manage_course.service.CoursePlanService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("course/teachplan")
public class CoursePlanController implements CoursePlanControllerApi {
@Autowired
private CoursePlanService coursePlanService;
/**
* 查询指定课程的课程ID
*
* @param courseId 课程ID
* @return TeachPlanNode
*/
@Override
@GetMapping("list/{courseId}")
public TeachplanNode findList(@PathVariable String courseId) {
return coursePlanService.findList(courseId);
}
}
CoursePlanService
package com.xuecheng.manage_course.service;
import com.xuecheng.framework.domain.course.ext.TeachplanNode;
import com.xuecheng.framework.service.BaseService;
import com.xuecheng.manage_course.dao.CoursePlanMapper;
import com.xuecheng.manage_course.dao.CoursePlanRepository;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
* 课程计划Service
*/
@Slf4j
@Service
public class CoursePlanService extends BaseService {
@Autowired
private CoursePlanRepository coursePlanRepository;
@Autowired
private CoursePlanMapper coursePlanMapper;
/**
* 查询指定课程的课程ID
*
* @param courseId 课程ID
* @return TeachPlanNode
*/
public TeachplanNode findList(String courseId) {
return coursePlanMapper.findList(courseId);
}
}
CoursePlanMapper
package com.xuecheng.manage_course.dao;
import com.xuecheng.framework.domain.course.ext.TeachplanNode;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface CoursePlanMapper {
/**
* 查询课程计划列表
*
* param courseId 课程ID
* @return TeachplanNode
*/
TeachplanNode findList(String courseId);
}
TeachplanMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.xuecheng.manage_course.dao.CoursePlanMapper">
<resultMap id="teachplanMap" type="com.xuecheng.framework.domain.course.ext.TeachplanNode">
<id column="one_id" property="id" />
<result column="one_name" property="pname" />
<collection property="children" ofType="com.xuecheng.framework.domain.course.ext.TeachplanNode">
<id column="two_id" property="id" />
<result column="two_name" property="pname" />
<collection property="children" ofType="com.xuecheng.framework.domain.course.ext.TeachplanNode">
<id column="three_id" property="id" />
<result column="three_name" property="pname" />
</collection>
</collection>
</resultMap>
<select id="findList" parameterType="java.lang.String"
resultMap="teachplanMap">
SELECT
a.id one_id,
a.pname one_name,
b.id two_id,
b.pname two_name,
c.id three_id,
c.pname three_name
FROM
teachplan a LEFT JOIN teachplan b
ON a.id = b.parentid
LEFT JOIN teachplan c
ON b.id = c.parentid
WHERE a.parentid = '0'
<if test="_parameter!=null and _parameter!=''">
and a.courseid=#{courseId}
</if>
ORDER BY a.orderby,
b.orderby,
c.orderby
</select>
</mapper>
测试
排坑
调用mapper
方法的时候报错:
Invalid bound statement (not found): com.xuecheng.manage_course.dao.CoursePlanMapper.findList
原因是mybatis
没有正确的加载到mapper.xml
文件,在application.yml
中加入下方配置
mybatis:
mapper-locations: classpath:com/xuecheng/manage_course/dao/*Mapper.xml
添加课程计划
CoursePlanController
/**
* 新增课程计划
*
* @param teachplan 课程计划
* @return ResponseResult
*/
@Override
@PostMapping("add")
public ResponseResult add(@RequestBody Teachplan teachplan) {
if (teachplan == null || StringUtils.isBlank(teachplan.getCourseid())) {
return new ResponseResult(CommonCode.PARAMS_ERROR);
}
// 新增
Teachplan add = coursePlanService.add(teachplan);
isNullOrEmpty(add, CourseCode.COURSE_PLAN_ADD_ERROR);
return ResponseResult.SUCCESS();
}
CoursePlanService
/**
* 新增课程计划
*
* @param teachplan 课程计划
* @return Teachplan
*/
public Teachplan add(Teachplan teachplan) {
Teachplan root = getTeachplanRoot(teachplan.getCourseid());
// 设置父ID
if (StringUtils.isBlank(teachplan.getParentid())) {
teachplan.setParentid(root.getId());
}
// 设置节点级别
if (root.getId().equals(teachplan.getParentid())) {// 第二级别
teachplan.setGrade("2");
} else {// 第三级别
teachplan.setGrade("3");
}
return coursePlanRepository.save(teachplan);
}
/**
* 查询指定课程的课程计划根节点
*
* @param courseId 课程计划
* @return Teachplan
*/
public Teachplan getTeachplanRoot(String courseId) {
// 查询课程基本信息
Optional<CourseBase> courseBase = courseBaseRepository.findById(courseId);
if (!courseBase.isPresent()) {
ExceptionCast.cast(CourseCode.COURSE_NOT_EXIST);
}
// 查询根节点下的所有二级节点
List<Teachplan> secondaryTeachplanList = coursePlanRepository.findByCourseidAndParentid(courseBase.get().getId(), "0");
if (secondaryTeachplanList == null || secondaryTeachplanList.isEmpty()) {// 若不存在根节点
// 创建根节点
Teachplan root = new Teachplan();
root.setCourseid(courseBase.get().getId());
root.setPname(courseBase.get().getName());
root.setParentid("0");// 根节点
root.setGrade("1");// 1级菜单
root.setStatus("0");// 未发布
coursePlanRepository.save(root);
return root;
}
return secondaryTeachplanList.get(0);
}
CoursePlanRepository
package com.xuecheng.manage_course.dao;
import com.xuecheng.framework.domain.course.Teachplan;
import org.springframework.data.repository.CrudRepository;
import java.util.List;
public interface CoursePlanRepository extends CrudRepository<Teachplan, String> {
/**
* 查询课程指定父ID的所有节点列表
*
* @param courseId 课程ID
* @param parentId 父ID
* @return List<Teachplan>
*/
List<Teachplan> findByCourseidAndParentid(String courseId, String parentId);
}
前端
修改保存成功后,关闭表单输入窗口,修改course_pan.vue
中的addTeachplan
方法
addTeachplan(){
//校验表单
this.$refs.teachplanForm.validate((valid) => {
if (valid) {
//调用api方法
//将课程id设置到teachplanActive
this.teachplanActive.courseid = this.courseid
courseApi.addTeachplan(this.teachplanActive).then(res=>{
if(res.success){
this.$message({
showClose: true,
message: res.message,
type: 'success'
})
//关闭课程计划信息录入窗口
this.teachplayFormVisible = false
//刷新树
this.findTeachplan()
}else{
this.$message.error(res.message)
}
})
}
})
}
编辑/删除课程计划
后端
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CoursePlanController
/** * 编辑课程计划 * * @param teachplan 课程计划 * @return ResponseResult */ @Override @PutMapping("edit") public ResponseResult edit(@RequestBody Teachplan teachplan) { if (teachplan == null || StringUtils.isBlank(teachplan.getCourseid()) || StringUtils.isBlank(teachplan.getId())) { return new ResponseResult(CommonCode.PARAMS_ERROR); } // 编辑 Teachplan edit = coursePlanService.edit(teachplan); isNullOrEmpty(edit, CourseCode.COURSE_PLAN_ADD_ERROR); return ResponseResult.SUCCESS(); } /** * 删除课程计划 * * @param teachplanId 课程计划ID * @return ResponseResult */ @Override @DeleteMapping("{teachplanId}") public ResponseResult delete(@PathVariable String teachplanId) { coursePlanService.deleteById(teachplanId); return ResponseResult.SUCCESS(); }
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CoursePlanService
/** * 编辑课程计划 * * @param teachplan 课程计划 * @return Teachplan */ public Teachplan edit(Teachplan teachplan) { Optional<Teachplan> optionalTeachplan = coursePlanRepository.findById(teachplan.getId()); if (!optionalTeachplan.isPresent()) { ExceptionCast.cast(CourseCode.COURSE_NOT_EXIST); } Teachplan _teachplan = optionalTeachplan.get(); _teachplan.setGrade(teachplan.getGrade()); _teachplan.setPname(teachplan.getPname()); _teachplan.setCourseid(teachplan.getCourseid()); _teachplan.setDescription(teachplan.getDescription()); _teachplan.setOrderby(teachplan.getOrderby()); _teachplan.setStatus(teachplan.getStatus()); _teachplan.setTimelength(teachplan.getTimelength()); Teachplan root = getTeachplanRoot(teachplan.getCourseid()); // 设置父ID if (StringUtils.isBlank(teachplan.getParentid())) { _teachplan.setParentid(root.getId()); } return coursePlanRepository.save(_teachplan); } /** * 查询指定ID的课程计划 * * @param teachplanId 课程计划ID * @return Teachplan */ public Teachplan findById(String teachplanId) { Optional<Teachplan> optionalTeachplan = coursePlanRepository.findById(teachplanId); if (!optionalTeachplan.isPresent()) { ExceptionCast.cast(CourseCode.COURSE_NOT_EXIST); } return optionalTeachplan.get(); } /** * 删除指定ID的课程计划 * * @param teachplanId 课程计划ID */ public void deleteById(String teachplanId) { coursePlanRepository.deleteById(teachplanId); }
前端
-
新增API定义,修改
course.js
/*查询课程计划*/ export const findTeachplanById = teachplanById => { return http.requestQuickGet(apiUrl+'/course/teachplan/'+teachplanById) } /*编辑课程计划*/ export const editTeachplan = teachplah => { return http.requestPut(apiUrl+'/course/teachplan/edit',teachplah) } /*删除课程计划*/ export const deleteTeachplan = teachplahId => { return http.requestDelete(apiUrl+'/course/teachplan/' + teachplahId) }
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页面修改,修改内容主要为
- 点击修改按钮,弹出修改框并回显数据,提交API调用
- 点击删除按钮,弹出确认框,确认后API调用
edit(data){ // 查询 courseApi.findTeachplanById(data.id).then(res => { this.teachplanActive = res if (res.grade === '2') { this.teachplanActive.parentid = '' } this.teachplayFormVisible = true }) //校验表单 this.$refs.teachplanForm.validate((valid) => { if (valid) { //调用api方法 //将课程id设置到teachplanActive this.teachplanActive.courseid = this.courseid courseApi.editTeachplan(this.teachplanActive).then(res=>{ if(res.success){ this.$message({ showClose: true, message: res.message, type: 'success' }) this.teachplayFormVisible = false //刷新树 this.findTeachplan() }else{ this.$message.error(res.message) } }) } }) }, remove(node, data) { // 执行删除 this.$confirm('确认删除该课程计划?', '提示', { confirmButtonText: '确定', cancelButtonText: '取消', type: 'warning' }).then(() => { // 删除 courseApi.deleteTeachplan(data.id).then(res => { // 提示消息 this.$message({ showClose: true, message: res.message, type: 'success' }) //刷新树 this.findTeachplan() }) }) }
注意:
由于新增和编辑用的同一个表单按钮,所以要做判断,若ID为空时调用新增,否则调用编辑
// 将按钮调用改为save方法 <el-button type="primary" v-on:click="save">提交</el-button> save() { if (this.teachplanActive.id) { this.edit(this.teachplanActive) } else { this.addTeachplan() } }
因为我没看课程目录,后一天的内容居然是课程管理的实战。。我在这一笔记里面就自己把课程管理的实战给做了,但是缺少课程营销相关的内容,我就不做了,懒得做(懒人就是我😜😜😜)