MongoDB 入门教程

叁歲伎倆 2023-07-09 02:29 134阅读 0赞

一.下载

1.MongoDB

2.MongoDB Compass（MongoDB的客户端）

二.安装

1.MongoDB

2.MongoDB Compass

三.Compass连接MongoDB

1.创建MongoDB数据库连接

2.创建数据库

四.Spring整合MongoDB

1.添加依赖

2.修改application.yml配置

3.添加文档对象MProduct

4.添加MProductRepository接口用于操作Mongodb

5.添加MProductService接口和MProductServiceImpl实现类

6.添加MProductController控制器

7.Mongo注解

8.接口测试

一.下载

1.MongoDB

https://www.mongodb.com/download-center/community

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2.MongoDB Compass（MongoDB的客户端）

https://www.mongodb.com/download-center/compass

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二.安装

1.MongoDB

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“install mongoDB compass” 不勾选，后面自己安装

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安装完后启动查看版本

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创建配置文件

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  1. systemLog:
  2.  destination: file
  3.  path: D:\soft\MongoDB\log\mongod.log
  4. storage:
  5.  dbPath: D:\soft\MongoDB\data\db

确保上面配置的文件夹对应的路径是有的，没有则创建（创建data\db和log两个文件夹）

安装服务

用管理员权限 打开命令行执行

  1. D:\soft\MongoDB\bin\mongod.exe --config "D:\soft\MongoDB\mongod.cfg" --install

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另外在无需管理员权限的命令窗口启动/关闭服务

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相关命令

  1. 删除服务：sc delete MongoDB
  2. 启动服务：net start MongoDB
  3. 关闭服务：net stop MongoDB
  4. 移除服务：D:\soft\MongoDB\bin\mongod.exe --remove

2.MongoDB Compass

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安装完后启动

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三.Compass连接MongoDB

1.创建MongoDB数据库连接

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2.创建数据库

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四.Spring整合MongoDB

1.添加依赖

  1. <!---mongodb相关依赖-->
  2.         <dependency>
  3.             <groupId>org.springframework.boot</groupId>
  4.             <artifactId>spring-boot-starter-data-mongodb</artifactId>
  5.         </dependency>

2.修改application.yml配置

spring:data节点下添加Mongodb相关配置

  1. #MongoDB配置
  2.     mongodb:
  3.       host: localhost
  4.       port: 27017
  5.       database: ak-mall

3.添加文档对象MProduct

文档对象的ID域添加@Id注解，需要检索的字段添加@Indexed注解。

  1. @Data
  2. @Document
  3. public class MProduct implements Serializable {
  5.     private static final long serialVersionUID = -1296261179864925924L;
  7.     @Id
  8.     private String id;
  9.     @Indexed
  10.     private String brandId;
  11.     private String name;
  12.     private Date createTime;
  13. }

4.添加MProductRepository接口用于操作Mongodb

  1. /**
  2.  * 继承MongoRepository接口，这样就拥有了一些基本的Mongodb数据操作方法，同时定义了一个衍生查询方法
  3.  */
  4. public interface MProductRepository extends MongoRepository<MProduct, Long> {
  5.     /**
  6.      * 根据品牌Id查询产品并倒序
  7.      *
  8.      * @param brandId 品牌Id
  9.      */
  10.     List<MProduct> findByBrandIdOrderByCreateTimeDesc(String brandId);
  11. }

5.添加MProductService接口和MProductServiceImpl实现类

  1. public interface MProductService {
  2.     /**
  3.      * 生成产品
  4.      */
  5.     int create(MProduct mProduct);
  7.     /**
  8.      * 批量删除
  9.      */
  10.     int delete(List<String> ids);
  12.     /**
  13.      * 根据brandId获取产品
  14.      */
  15.     List<MProduct> list(String brandId);
  16. }
  18. @Service
  19. public class MProductServiceImpl implements MProductService {
  21.     @Autowired
  22.     private MProductRepository mProductRepository;
  24.     @Override
  25.     public int create(MProduct mProduct) {
  26.         mProduct.setId(null);
  27.         mProduct.setCreateTime(new Date());
  28.         mProductRepository.save(mProduct);
  29.         return 1;
  30.     }
  32.     @Override
  33.     public int delete(List<String> ids) {
  34.         List<MProduct> deleteList = new ArrayList<>();
  35.         for (String id : ids) {
  36.             MProduct mProduct = new MProduct();
  37.             mProduct.setId(id);
  38.             deleteList.add(mProduct);
  39.         }
  40.         mProductRepository.deleteAll(deleteList);
  41.         return ids.size();
  42.     }
  44.     @Override
  45.     public List<MProduct> list(String brandId) {
  46.         return mProductRepository.findByBrandIdOrderByCreateTimeDesc(brandId);
  47.     }
  48. }

6.添加MProductController控制器

  1. @Api(tags = "MProductController", description = "Mongo-产品控制器")
  2. @RestController
  3. @RequestMapping("/m/product")
  4. public class MProductController {
  6.     @Autowired
  7.     private MProductService mProductService;
  9.     @ApiOperation("创建产品")
  10.     @RequestMapping(value = "/create", method = RequestMethod.POST)
  11.     public CommonResult create(@RequestBody MProduct mProduct) {
  12.         int count = mProductService.create(mProduct);
  13.         if (count > 0) {
  14.             return CommonResult.success(count);
  15.         } else {
  16.             return CommonResult.failed();
  17.         }
  18.     }
  20.     @ApiOperation("删除产品")
  21.     @RequestMapping(value = "/delete", method = RequestMethod.POST)
  22.     @ResponseBody
  23.     public CommonResult delete(@RequestParam("ids") List<String> ids) {
  24.         int count = mProductService.delete(ids);
  25.         if (count > 0) {
  26.             return CommonResult.success(count);
  27.         } else {
  28.             return CommonResult.failed();
  29.         }
  30.     }
  32.     @ApiOperation("根据brandId获取产品")
  33.     @RequestMapping(value = "/list", method = RequestMethod.GET)
  34.     @ResponseBody
  35.     public CommonResult<List<MProduct>> list(String brandId) {
  36.         List<MProduct> mProductList = mProductService.list(brandId);
  37.         return CommonResult.success(mProductList);
  38.     }
  40. }

7.Mongo注解

  1. @Document:标示映射到Mongodb文档上的领域对象
  2. @Id:标示某个域为ID域
  3. @Indexed:标示某个字段为Mongodb的索引字段

8.接口测试

创建产品

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查询产品

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删除产品

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