Springboot（十六）SpringBoot整合mongoDB

浅浅的花香味﹌ 2022-05-18 08:34 312阅读 0赞

新建一个springboot工程，pom.xml如下：

<?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">
        <modelVersion>4.0.0</modelVersion>
    
        <groupId>com.xhx.springboot</groupId>
        <artifactId>springboot7</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <packaging>jar</packaging>
    
        <name>springboot7</name>
        <description>Demo project for Spring Boot</description>
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.0.1.RELEASE</version>
            <relativePath/> 
        </parent>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <java.version>1.8</java.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-mongodb</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    
    </project>

application.yml如下：

spring:
      data:
        mongodb:
          database: mytest
          host: 192.168.94.151
          port: 27017
    #spring.data.mongodb.uri=mongodb://username:password@IP:PORT/mongoDBName

dao层继承MongoRepository

package com.xhx.springboot.repository;
    
    import com.xhx.springboot.entity.Account;
    import org.springframework.data.mongodb.repository.MongoRepository;
    import org.springframework.stereotype.Repository;
    
    import java.util.List;
    
    /**
     * @author xuhaixing
     * @date 2018/5/4 9:22
     */
    @Repository
    public interface AccountRepository extends MongoRepository<Account, String> {
    
        List<Account> findByName(String name);
    
    }

同时还可以注入MongoTemplate操作数据库，我就不分层了，都注入到controller里了（只为演示功能）

package com.xhx.springboot.Controller;
    
    import com.xhx.springboot.entity.Account;
    import com.xhx.springboot.repository.AccountRepository;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.data.mongodb.core.MongoTemplate;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import java.util.List;
    
    /**
     * @author xuhaixing
     * @date 2018/5/4 9:26
     */
    
    @RestController
    @RequestMapping(value = "account")
    public class AccountController {
    
        @Autowired
        private AccountRepository accountRepository;
    
        @Autowired
        private MongoTemplate mongoTemplate;
    
    
        @RequestMapping(value = "save")
        public int save(@RequestBody Account account) {
            accountRepository.save(account);
            return 1;
        }
    
        @RequestMapping(value = "findAll")
        public List<Account> findAll() {
            return accountRepository.findAll();
        }
    
        @RequestMapping(value = "findById")
        public Account findById(String id) {
            return accountRepository.findById(id).get();
        }
    
        @RequestMapping(value = "findByName")
        public List<Account> findByName(String name) {
            return accountRepository.findByName(name);
        }
    
        @RequestMapping(value = "findAll2")
        public List<Account> findAll2() {
            return mongoTemplate.findAll(Account.class);
        }
    
    }

启动工程，访问接口就可以 了。

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