个人项目小结 (14)

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排除mongoDB

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端口占用

·        原因:idea卡死或者异常关闭

 

 

搜附近以及探花功能 es地理位置存储到Elasticsearch中 判断索引是否存在 判断表是否存在 查询个人的地理位置数据,如果不存在创建,存在则修改 根据id查询数据是否存在

·        GetQuery getQuery = new GetQuery();            getQuery.setId(String.valueOf(userId));            UserLocation userLocation = this.elasticsearchTemplate.queryForObject(getQuery, UserLocation.class);

新增

·         IndexQuery indexQuery = new IndexQueryBuilder().withObject(userLocation).build();                //保存数据到ES中                this.elasticsearchTemplate.index(indexQuery);

修改

·         UpdateRequest updateRequest = new UpdateRequest();                updateRequest.doc(map);                UpdateQuery updateQuery = new UpdateQueryBuilder()                        .withId(String.valueOf(userId))                        .withClass(UserLocation.class)                        .withUpdateRequest(updateRequest).build();                //更新数据                this.elasticsearchTemplate.update(updateQuery);

esApi回顾 JavaAPI

·        添加索引

•      1. 获取索引对象

•      client.indices()

•      2. 创建添加索引的请求

•      new CreateIndexRequest("itheima")

•      3. 发起创建请求

•      indicesClient.create(createRequest,

•                      RequestOptions.DEFAULT)

·        添加索引+映射mapping

•      createRequest.mapping(mapping, XContentType.JSON)

·        了解：查询、删除、判断索引

·        添加文档

•      1. 构建文档数据new HashMap()

•      JSON.toJSONString(person)

•      2. new IndexRequest("itcast").id("1").source(data)

•      new IndexRequest("itcast").id(p.getId()).source(data,                XContentType.JSON)

•      3, client.index(request, RequestOptions.DEFAULT)

·        修改文档

•      添加文档时，如果id存在则修改，id不存在则添加

·        根据ID查询

•      1. new GetRequest("itcast", "1")

•      2. client.get(getReqeust, RequestOptions.DEFAULT)

•      3. response.getSourceAsString()

·        根据ID删除

•      1. new DeleteRequest("itcast", "1")

•      2. client.delete(deleteRequest, RequestOptions.DEFAULT)