Spring 整合 MongoDB

比眉伴天荒 2022-07-13 09:16 242阅读 0赞

#                                Spring 整合 MongoDB #

MongoDB 是一个基于分布式文件存储的数据库。由 C++ 语言编写。旨在为 WEB 应用提供可扩展的高性能数据存储解决方案。

MongoDB 是一个介于关系数据库和非关系数据库之间的产品，是非关系数据库当中功能最丰富，最像关系数据库的。

启动 mongodb服务

./mongod -dbpath ../db/ -logpath ../logs/log -logappend -fork -port 27017

进入 mongodb，并新建一个数据库

![Center][]

如果没有安装mongodb的 请查看 [ http://blog.csdn.net/raccoon\_hzy/article/details/53895807][http_blog.csdn.net_raccoon_hzy_article_details_53895807] mongodb的安装与部署

### 在eclipse中新建一个maven项目    ###

1 构建pom文件

<dependency>
    			<groupId>org.springframework.data</groupId>
    			<artifactId>spring-data-mongodb</artifactId>
    			<version>1.5.4.RELEASE</version>
    		</dependency>
    		<dependency>
    			<groupId>junit</groupId>
    			<artifactId>junit</artifactId>
    			<version>4.12</version>
    			<scope>test</scope>
    		</dependency>
    
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-web</artifactId>
    			<version>4.1.3.RELEASE</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-test</artifactId>
    			<version>4.1.3.RELEASE</version>
    			<scope>test</scope>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-webmvc</artifactId>
    			<version>4.1.3.RELEASE</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-aspects</artifactId>
    			<version>4.1.3.RELEASE</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-orm</artifactId>
    			<version>4.1.3.RELEASE</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-core</artifactId>
    			<version>4.1.3.RELEASE</version>
    		</dependency>
    
    		<dependency>
    			<groupId>org.aspectj</groupId>
    			<artifactId>aspectjrt</artifactId>
    			<version>1.6.12</version>
    		</dependency>

2 新建一个mongodb.properties 文件

# \u6570\u636E\u5E93\u5730\u5740
    mongodb.host=192.168.126.133
    # \u6570\u636E\u5E93\u7AEF\u53E3
    mongodb.port=27017
    # \u591A\u8FDE\u63A5\u7684\u6570\u636E\u5E93
    mongodb.dbname=test

3 新建applicationContex.xml文件

<mongo:mongo host="${mongodb.host}" port="${mongodb.port}" />
    
    	
    	<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
    		<constructor-arg ref="mongo" />
    		
    		<constructor-arg name="databaseName" value="${mongodb.dbname}" />
    	</bean>

4 新建测试类 MongoDBTest.class

package com.chainhu.test;
    
    import java.util.List;
    
    import javax.annotation.Resource;
    
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.data.mongodb.core.MongoTemplate;
    import org.springframework.data.mongodb.core.query.Criteria;
    import org.springframework.data.mongodb.core.query.Query;
    import org.springframework.test.context.ContextConfiguration;
    import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
    
    import com.chainhu.domain.Customer;
    
    @RunWith(value=SpringJUnit4ClassRunner.class)
    @ContextConfiguration(locations={"classpath:applicationContext.xml"})
    public class MongoTest {
        @Resource
    	private MongoTemplate mongoTemplate;
    	@Test
    	public void mongoTest(){
    		Customer customer = new Customer();
    		customer.setId(2);
    		customer.setUsername("xiaoli");
    		customer.setGender("nv");
    		mongoTemplate.insert(customer);
    		
    	}
    	
    	@Test
    	public void findAll(){
    		List<Customer> list = mongoTemplate.find(new Query(), Customer.class);
    	    for(Customer c :list){
    	    	System.out.println(c);
    	    }
    	}
    	
    	@Test
    	public void findOne(){
    		Customer c = mongoTemplate.findOne(new Query(Criteria.where("id").is("2")), Customer.class);
    	    System.out.println(c);
    	}
    	
    	@Test
    	public void removeOne(){
    		// 先查后删
    		Query query = new Query(Criteria.where("id").is(2));
    		if(query != null){
    			Customer c = mongoTemplate.findOne(query, Customer.class);
    			if(c != null){
    				mongoTemplate.remove(c);
    			}
    		}
    	}
    	
    	@Test
    	public void removeAll(){
    		List<Customer> list = mongoTemplate.find(new Query(), Customer.class);
    		if(list != null && list.size()>0){
                int count = 0;
    			for(Customer c : list){
    				mongoTemplate.remove(c);
    				count++;
    			}
    			System.out.println("共删除："+count);
    		}
    	}
    }

运行 mongoTest 方法后在运行 findAll方法

![Center 1][]

此时 spring整合mongodb完成！

[Center]: /images/20220713/8548dc02a34a42c98512f841060cc70d.png
[http_blog.csdn.net_raccoon_hzy_article_details_53895807]: http://blog.csdn.net/raccoon_hzy/article/details/53895807
[Center 1]: /images/20220713/921b30bacb694626868db3cf09ea6431.png