145 lines
4.8 KiB
Markdown
145 lines
4.8 KiB
Markdown
# spring 整合 mongodb（xml配置方式）
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## 一、说明
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### 1.1 项目结构说明
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配置文件位于resources下,项目以单元测试的方式进行测试。
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<div align="center"> <img src="https://github.com/heibaiying/spring-samples-for-all/blob/master/pictures/spring-mongodb.png"/> </div>
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### 1.2 依赖说明
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除了spring的基本依赖外，需要导入mongodb整合依赖包
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```xml
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<!--spring mongodb 整合依赖-->
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<dependency>
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<groupId>org.springframework.data</groupId>
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<artifactId>spring-data-mongodb</artifactId>
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<version>2.1.3.RELEASE</version>
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</dependency>
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```
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## 二、spring mongodb
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#### 2.1 新建配置文件
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```properties
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mongo.host=192.168.200.228
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mongo.port=27017
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# 数据库名称. 默认是'db'.
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mongo.dbname=database
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# 每个主机允许的连接数
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mongo.connectionsPerHost=10
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# 线程队列数，它和上面connectionsPerHost值相乘的结果就是线程队列最大值。如果连接线程排满了队列就会抛出异常
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mongo.threadsAllowedToBlockForConnectionMultiplier=5
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# 连接超时的毫秒 0是默认值且无限大。
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mongo.connectTimeout=1000
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# 最大等待连接的线程阻塞时间 默认是120000 ms (2 minutes).
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mongo.maxWaitTime=1500
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# 保持活动标志，控制是否有套接字保持活动超时 官方默认为true 且不建议禁用
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mongo.socketKeepAlive=true
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# 用于群集心跳的连接的套接字超时。
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mongo.socketTimeout=1500
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```
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#### 2.2 整合配置
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```xml
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:mongo="http://www.springframework.org/schema/data/mongo"
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xsi:schemaLocation=
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"http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context.xsd
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http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo.xsd
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http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans.xsd">
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<!--扫描配置文件-->
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<context:property-placeholder location="classpath:mongodb.properties"/>
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<!--定义用于访问MongoDB的MongoClient实例-->
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<mongo:mongo-client host="${mongo.host}" port="${mongo.port}">
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<mongo:client-options
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connections-per-host="${mongo.connectionsPerHost}"
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threads-allowed-to-block-for-connection-multiplier="${mongo.threadsAllowedToBlockForConnectionMultiplier}"
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connect-timeout="${mongo.connectTimeout}"
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max-wait-time="${mongo.maxWaitTime}"
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socket-keep-alive="${mongo.socketKeepAlive}"
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socket-timeout="${mongo.socketTimeout}"
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/>
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</mongo:mongo-client>
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<!--定义用于连接到数据库的连接工厂-->
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<mongo:db-factory dbname="${mongo.dbname}" mongo-ref="mongoClient"/>
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<!--实际操作mongodb的template,在代码中注入-->
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<bean id="anotherMongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
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<constructor-arg name="mongoDbFactory" ref="mongoDbFactory"/>
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</bean>
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</beans>
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```
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#### 2.3 测试整合
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```java
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/**
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* @author : heibaiying
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* @description : MongoDB 查询
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*/
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@RunWith(SpringRunner.class)
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@ContextConfiguration(locations = "classpath:mongodb.xml")
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public class MongoDBTest {
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@Autowired
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private MongoTemplate mongoTemplate;
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@Test
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public void insert() {
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// 单条插入
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mongoTemplate.insert(new Programmer("xiaoming", 12, 5000.21f, new Date()));
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List<Programmer> programmers = new ArrayList<Programmer>();
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// 批量插入
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programmers.add(new Programmer("xiaohong", 21, 52200.21f, new Date()));
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programmers.add(new Programmer("xiaolan", 34, 500.21f, new Date()));
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mongoTemplate.insert(programmers, Programmer.class);
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}
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// 条件查询
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@Test
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public void select() {
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Criteria criteria = new Criteria();
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criteria.andOperator(where("name").is("xiaohong"), where("age").is(21));
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Query query = new Query(criteria);
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Programmer one = mongoTemplate.findOne(query, Programmer.class);
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System.out.println(one);
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}
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// 更新数据
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@Test
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public void MUpdate() {
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UpdateResult updateResult = mongoTemplate.updateMulti(query(where("name").is("xiaoming")), update("age", 35), Programmer.class);
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System.out.println("更新记录数：" + updateResult.getModifiedCount());
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}
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// 删除指定数据
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@Test
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public void delete() {
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DeleteResult result = mongoTemplate.remove(query(where("name").is("xiaolan")), Programmer.class);
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System.out.println("影响记录数：" + result.getDeletedCount());
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System.out.println("是否成功：" + result.wasAcknowledged());
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}
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}
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```
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