Java的新项目学成在线笔记-day15（六）

2.3.4 启动logstash.bat  启动logstash.bat采集teachplan_media_pub中的数据，向ES写入索引。 [AppleScript] 纯文本查看 复制代码 ? 1 logstash.bat ‐f ../config/mysql_course_media.conf 2.4 搜索服务查询课程媒资接口  2.4.1 需求分析  搜索服务提供查询课程媒资接口，此接口供学习服务调用。 2.4.2 Api  在课程搜索包下定义Api   [AppleScript] 纯文本查看 复制代码 ? 1 2 @ApiOperation("根据课程计划查询媒资信息")  public TeachplanMediaPub getmedia(String teachplanId); 2.4.3 Service  1、配置课程计划媒资索引库等信息 在application.yml中配置   [AppleScript] 纯文本查看 复制代码 ? 1 2 3 4 5 6 xuecheng:   elasticsearch:     media:       index: xc_course_media       type: doc      source_field: courseid,media_id,media_url,teachplan_id,media_fileoriginalname 2、service方法开发 在课程搜索服务中定义课程媒资查询接口，为了适应后续需求，service参数定义为数组，可一次查询多个课程计划 的媒资信息。   [AppleScript] 纯文本查看 复制代码 ? 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 //根据课程计划查询媒资信息 public QueryResponseResult<TeachplanMediaPub> getmedia(String[] teachplanIds){     //设置索引     SearchRequest searchRequest = new SearchRequest(media_index);     //设置类型     searchRequest.types(media_type);     SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();     //source源字段过虑     String[] source_fields = media_source_field.split(",");     searchSourceBuilder.fetchSource(source_fields, new String[]{});     //查询条件，根据课程计划id查询(可传入多个id)     searchSourceBuilder.query(QueryBuilders.termsQuery("teachplan_id", teachplanIds));     searchRequest.source(searchSourceBuilder);     SearchResponse searchResponse = null;     try {         //执行搜索  searchResponse = restHighLevelClient.search(searchRequest);     } catch (IOException e) {         e.printStackTrace();     }     //获取搜索结果     SearchHits hits = searchResponse.getHits();     SearchHit[] searchHits = hits.getHits();     Map<String,CoursePub> map = new HashMap<>();     //数据列表     List<TeachplanMediaPub> teachplanMediaPubList = new ArrayList<>();     for (SearchHit hit : searchHits) {         TeachplanMediaPub teachplanMediaPub  =new TeachplanMediaPub();         Map<String, Object> sourceAsMap = hit.getSourceAsMap();         //取出课程计划媒资信息         String courseid = (String) sourceAsMap.get("courseid");        String media_id = (String) sourceAsMap.get("media_id");         String media_url = (String) sourceAsMap.get("media_url");         String teachplan_id = (String) sourceAsMap.get("teachplan_id");         String media_fileoriginalname = (String) sourceAsMap.get("media_fileoriginalname");           teachplanMediaPub.setCourseId(courseid);         teachplanMediaPub.setMediaUrl(media_url);         teachplanMediaPub.setMediaFileOriginalName(media_fileoriginalname);         teachplanMediaPub.setMediaId(media_id);         teachplanMediaPub.setTeachplanId(teachplan_id);           //将数据加入列表         teachplanMediaPubList.add(teachplanMediaPub);     }       //构建返回课程媒资信息对象     QueryResult<TeachplanMediaPub> queryResult = new QueryResult<>();     queryResult.setList(teachplanMediaPubList);     QueryResponseResult<TeachplanMediaPub> queryResponseResult = new  QueryResponseResult<TeachplanMediaPub>(CommonCode.SUCCESS,queryResult);     return queryResponseResult;   } 2.4.4 Controller  [AppleScript] 纯文本查看 复制代码 ? 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48         searchResponse = restHighLevelClient.search(searchRequest);     } catch (IOException e) {         e.printStackTrace();     }     //获取搜索结果     SearchHits hits = searchResponse.getHits();     SearchHit[] searchHits = hits.getHits();     Map<String,CoursePub> map = new HashMap<>();     //数据列表     List<TeachplanMediaPub> teachplanMediaPubList = new ArrayList<>();     for (SearchHit hit : searchHits) {         TeachplanMediaPub teachplanMediaPub  =new TeachplanMediaPub();         Map<String, Object> sourceAsMap = hit.getSourceAsMap();         //取出课程计划媒资信息         String courseid = (String) sourceAsMap.get("courseid");         String media_id = (String) sourceAsMap.get("media_id");         String media_url = (String) sourceAsMap.get("media_url");         String teachplan_id = (String) sourceAsMap.get("teachplan_id");         String media_fileoriginalname = (String) sourceAsMap.get("media_fileoriginalname");           teachplanMediaPub.setCourseId(courseid);         teachplanMediaPub.setMediaUrl(media_url);         teachplanMediaPub.setMediaFileOriginalName(media_fileoriginalname);         teachplanMediaPub.setMediaId(media_id);         teachplanMediaPub.setTeachplanId(teachplan_id);           //将数据加入列表         teachplanMediaPubList.add(teachplanMediaPub);     }       //构建返回课程媒资信息对象     QueryResult<TeachplanMediaPub> queryResult = new QueryResult<>();     queryResult.setList(teachplanMediaPubList);     QueryResponseResult<TeachplanMediaPub>  queryResponseResult = new  QueryResponseResult<TeachplanMediaPub>(CommonCode.SUCCESS,queryResult);     return queryResponseResult;   } @Override @GetMapping(value="/getmedia/{teachplanId}") public TeachplanMediaPub getmedia(@PathVariable("teachplanId") String teachplanId) {     //将课程计划id放在数组中，为调用service作准备     String[] teachplanIds = new String[]{teachplanId};     //通过service查询ES获取课程媒资信息     QueryResponseResult<TeachplanMediaPub> mediaPubQueryResponseResult =  esCourseService.getmedia(teachplanIds);     QueryResult<TeachplanMediaPub> queryResult = mediaPubQueryResponseResult.getQueryResult();     if(queryResult!=null  && queryResult.getList()!=null             && queryResult.getList().size()>0){         //返回课程计划对应课程媒资         return queryResult.getList().get(0);      }     return new TeachplanMediaPub(); } 2.4.5 测试  使用swagger-ui和postman测试课程媒资查询接口。