MongoDB 学习（三）MongoDB 和 Spring 整合（Maven）

一、MongoDB 和 Spring 整合（Maven）

1、相关 jar 包准备

2、用 Maven 创建项目，pom.xml 文件

 <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/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.test.web</groupId>
     <artifactId>study-maven</artifactId>
     <packaging>war</packaging>
     <version>1.0-SNAPSHOT</version>
     <name>study-maven Maven Webapp</name>
     <url>http://maven.apache.org</url>

     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <maven.compiler.encoding>UTF-8</maven.compiler.encoding>

         <!-- spring版本号 -->
         <spring.version>4.1.9.RELEASE</spring.version>
         <org.mybatis.version>3.4.1</org.mybatis.version>
         <org.mybatis.spring.version>1.3.0</org.mybatis.spring.version>
     </properties>

     <dependencies>
         <!--驱动包-->
         <dependency>
             <groupId>org.mongodb</groupId>
             <artifactId>mongo-java-driver</artifactId>
             <version>2.13.0-rc2</version>
         </dependency>
         <!--核心包-->
         <dependency>
             <groupId>org.springframework.data</groupId>
             <artifactId>spring-data-mongodb</artifactId>
             <version>1.8.2.RELEASE</version>
         </dependency>
         <!--依赖-->
         <dependency>
             <groupId>org.springframework.data</groupId>
             <artifactId>spring-data-commons</artifactId>
             <version>1.10.0.RELEASE</version>
         </dependency>

         <!-- 添加spring核心依赖 -->
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-core</artifactId>
             <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-web</artifactId>
             <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-oxm</artifactId>
             <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-tx</artifactId>
             <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-jdbc</artifactId>
             <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-webmvc</artifactId>
             <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-context</artifactId>
             <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-context-support</artifactId>
             <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-aop</artifactId>
             <version>${spring.version}</version>
         </dependency>

         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-test</artifactId>
             <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
             <version>4.12</version>
         </dependency>

     </dependencies>
     <build>
         <finalName>study-maven</finalName>
     </build>
 </project>

3、spring-config.xml 配置文件

 <?xml version="1.0" encoding="UTF-8" ?>
 <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:mongo="http://www.springframework.org/schema/data/mongo"

        xsi:schemaLocation="http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
     http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
     http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo.xsd">

     <!--1.开启注解-->
     <context:annotation-config/>

     <!--2.自动扫描-->
     <context:component-scan base-package="com.mongodb"/>

     <!--3.服务器连接信息-->
     <mongo:mongo host="localhost" port="27017"/>

     <!--4.创建mongoTemplate模板-->
     <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
         <constructor-arg ref="mongo"/>
         <!-- 设置使用的数据库 名-->
         <constructor-arg name="databaseName" value="station"/>
     </bean>

 </beans>

4、pojo 类

Product 类

 package com.mongodb.pojo;

 /**
  * @author zt1994 2018/3/12 10:43
  */
 public class Product {
     private String id;
     private String productName;
     private Integer productNum;

     public String getId() {
         return id;
     }

     public void setId(String id) {
         this.id = id;
     }

     public String getProductName() {
         return productName;
     }

     public void setProductName(String productName) {
         this.productName = productName;
     }

     public Integer getProductNum() {
         return productNum;
     }

     public void setProductNum(Integer productNum) {
         this.productNum = productNum;
     }

     @Override
     public String toString() {
         return "Product{" +
                 "id='" + id + '\'' +
                 ", productName='" + productName + '\'' +
                 ", productNum=" + productNum +
                 '}';
     }
 }

5、dao 层

IProductDao 接口：

 package com.mongodb.dao;

 import com.mongodb.pojo.Product;

 import java.util.List;

 /**
  * @author zt1994 2018/3/12 10:45
  */
 public interface IProductDao {
     /**
      * 添加产品
      * @param product
      */
     void addProduct(Product product);

     /**
      * 删除产品
      * @param id
      */
     void removeProduct(String id);

     /**
      * 保存或修改产品
      * @param product
      */
     void saveOrUpdateProduct(Product product);

     /**
      * 查询单个产品
      * @param id
      * @return
      */
     Product findById(String id);

     /**
      * 查询所有产品
      * @return
      */
     List<Product> findAll();
 }

ProductDaoImpl 实现类：

 package com.mongodb.dao.impl;

 import com.mongodb.dao.IProductDao;
 import com.mongodb.pojo.Product;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.mongodb.core.MongoTemplate;
 import org.springframework.stereotype.Repository;

 import java.util.List;

 /**
  * @author zt1994 2018/3/12 10:46
  */
 @Repository
 public class ProductDaoImpl implements IProductDao {

     @Autowired
     private MongoTemplate mongoTemplate;

     public void addProduct(Product product) {
         //1.如果没有指定集合，则默认添加到和对象名称相同的集合中，没有则创建一个
         //2.也可以指定集合 mongoTemplate.save(product, "product_db");
         mongoTemplate.save(product);
     }

     public void removeProduct(String id) {
         Product product = findById(id);
         mongoTemplate.remove(product);
     }

     public void saveOrUpdateProduct(Product product) {
         mongoTemplate.save(product);
     }

     public Product findById(String id) {
         return mongoTemplate.findById(id, Product.class);
     }

     public List<Product> findAll() {
         return mongoTemplate.findAll(Product.class);
     }
 }

6、测试

 package com.mongodb.test;

 import com.mongodb.dao.IProductDao;
 import com.mongodb.pojo.Product;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

 import java.util.List;

 /**
  * @author zt1994 2018/3/12 10:52
  */
 @RunWith(SpringJUnit4ClassRunner.class)
 @ContextConfiguration("classpath:spring-config.xml")
 public class TestProductDao {

     @Autowired
     private IProductDao productDao;

     /**
      * 测试添加产品
      */
     @Test
     public void testAddProduct(){
         Product product = new Product();
         product.setProductName("测试新增");
         product.setProductNum(3);
         productDao.addProduct(product);
     }

     /**
      * 测试查找所有产品
      */
     @Test
     public void testFindAll(){
         List<Product> productList = productDao.findAll();
         for (Product product : productList) {
             System.out.println(product);
         }
     }

     /**
      * 测试通过id查找产品
      */
     @Test
     public void testFindId(){
         Product product = productDao.findById("5aa5f3d9b735172bc3a617c1");
         System.out.println(product);
     }

     /**
      * 测试更新产品
      */
     @Test
     public void testUpdateProduct(){
         Product product = productDao.findById("5aa5f3d9b735172bc3a617c1");
         System.out.println(product);
         product.setProductName("测试修改");
         product.setProductNum(5);
         this.productDao.saveOrUpdateProduct(product);
         Product product2 = productDao.findById("5aa5f3d9b735172bc3a617c1");
         System.out.println(product2);
     }
 }