Mongodb介紹
- Mongodb是爲快速開發互聯網Web應用而構建的數據庫系統,其數據模型和持久化策略就是爲了構建高讀/寫吞吐量和高自動災備伸縮性的系統。
Mongodb的安裝和使用
- 下載Mongodb安裝包,下載地址:https://fastdl.mongodb.org/win32/mongodb-win32-x86_64-2008plus-ssl-3.2.21-signed.msi
-
安裝robo3t客戶端
- 客戶端程序:https://download.robomongo.org/1.2.1/windows/robo3t-1.2.1-windows-x86_64-3e50a65.zip
-
常用註解
- @Document:標示映射到Mongodb文檔上的領域對象
- @Id標示某個域爲ID域
- @Indexed:標示某個字段爲Mongodb的索引字段
-
Sping data方式的數據操作
- 繼承MongoRepository接口可以獲得常用的數據操作方法
- 可以使用衍生查詢
- 在接口中直接指定查詢方法名稱便可查詢,無需進行實現,以下爲根據會員id按時間倒序獲取瀏覽記錄的例子。
/**
* 會員商品瀏覽歷史Repository
* Created by macro on 2018/8/3.
*/
public interface MemberReadHistoryRepository extends MongoRepository<MemberReadHistory,String> {
/**
* 根據會員id按時間倒序獲取瀏覽記錄
* @param memberId 會員id
*/
List<MemberReadHistory> findByMemberIdOrderByCreateTimeDesc(Long memberId);
}
- 使用@Query註解可以用Mongodb的JSON查詢語句進行查詢
@Query("{ 'memberId' : ?0 }")
List<MemberReadHistory> findByMemberId(Long memberId);
整合Mongodb實現文檔操作
添加依賴
<!---mongodb相關依賴-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
修改applocation.yml文件 在spring:data節點下添加
mongodb:
host: localhost # mongodb的連接地址
port: 27017 # mongodb的連接端口號
database: mall-port # mongodb的連接的數據庫
添加會員瀏覽記錄文檔對象MemberReadHistory
import java.util.Date;
/**
* 用戶商品瀏覽歷史記錄
* Created by macro on 2018/8/3.
*/
@Document
public class MemberReadHistory {
@Id
private String id;
@Indexed
private Long memberId;
private String memberNickname;
private String memberIcon;
@Indexed
private Long productId;
private String productName;
private String productPic;
private String productSubTitle;
private String productPrice;
private Date createTime;
//省略了所有getter和setter方法
}
添加MemberReadHistoryRepository接口用於操作Mongodb
import java.util.List;
/**
* 會員商品瀏覽歷史Repository
* Created by macro on 2018/8/3.
*/
public interface MemberReadHistoryRepository extends MongoRepository<MemberReadHistory,String> {
/**
* 根據會員id按時間倒序獲取瀏覽記錄
* @param memberId 會員id
*/
List<MemberReadHistory> findByMemberIdOrderByCreateTimeDesc(Long memberId);
}
添加MemberReadHistoryService接口
import java.util.List;
/**
* 會員瀏覽記錄管理Service
* Created by macro on 2018/8/3.
*/
public interface MemberReadHistoryService {
/**
* 生成瀏覽記錄
*/
int create(MemberReadHistory memberReadHistory);
/**
* 批量刪除瀏覽記錄
*/
int delete(List<String> ids);
/**
* 獲取用戶瀏覽歷史記錄
*/
List<MemberReadHistory> list(Long memberId);
}
添加MemberReadHistoryService接口實現類MemberReadHistoryServiceImpl
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
/**
* 會員瀏覽記錄管理Service實現類
* Created by macro on 2018/8/3.
*/
@Service
public class MemberReadHistoryServiceImpl implements MemberReadHistoryService {
@Autowired
private MemberReadHistoryRepository memberReadHistoryRepository;
@Override
public int create(MemberReadHistory memberReadHistory) {
memberReadHistory.setId(null);
memberReadHistory.setCreateTime(new Date());
memberReadHistoryRepository.save(memberReadHistory);
return 1;
}
@Override
public int delete(List<String> ids) {
List<MemberReadHistory> deleteList = new ArrayList<>();
for(String id:ids){
MemberReadHistory memberReadHistory = new MemberReadHistory();
memberReadHistory.setId(id);
deleteList.add(memberReadHistory);
}
memberReadHistoryRepository.deleteAll(deleteList);
return ids.size();
}
@Override
public List<MemberReadHistory> list(Long memberId) {
return memberReadHistoryRepository.findByMemberIdOrderByCreateTimeDesc(memberId);
}
}
添加MemberReadHistoryController定義接口
import com.macro.mall.tiny.common.api.CommonResult;
import com.macro.mall.tiny.nosql.mongodb.document.MemberReadHistory;
import com.macro.mall.tiny.service.MemberReadHistoryService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import java.util.List;
/**
* 會員商品瀏覽記錄管理Controller
* Created by macro on 2018/8/3.
*/
@Controller
@Api(tags = "MemberReadHistoryController", description = "會員商品瀏覽記錄管理")
@RequestMapping("/member/readHistory")
public class MemberReadHistoryController {
@Autowired
private MemberReadHistoryService memberReadHistoryService;
@ApiOperation("創建瀏覽記錄")
@RequestMapping(value = "/create", method = RequestMethod.POST)
@ResponseBody
public CommonResult create(@RequestBody MemberReadHistory memberReadHistory) {
int count = memberReadHistoryService.create(memberReadHistory);
if (count > 0) {
return CommonResult.success(count);
} else {
return CommonResult.failed();
}
}
@ApiOperation("刪除瀏覽記錄")
@RequestMapping(value = "/delete", method = RequestMethod.POST)
@ResponseBody
public CommonResult delete(@RequestParam("ids") List<String> ids) {
int count = memberReadHistoryService.delete(ids);
if (count > 0) {
return CommonResult.success(count);
} else {
return CommonResult.failed();
}
}
@ApiOperation("展示瀏覽記錄")
@RequestMapping(value = "/list", method = RequestMethod.GET)
@ResponseBody
public CommonResult<List<MemberReadHistory>> list(Long memberId) {
List<MemberReadHistory> memberReadHistoryList = memberReadHistoryService.list(memberId);
return CommonResult.success(memberReadHistoryList);
}
}
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