Spring 整合Mongodb

1、项目采用Maven 的方式。所需要的jar包只需要配置即可。
2、与Mongodb，spring整合相关的两个jar包：

<dependency>        <groupId>org.mongodb</groupId>        <artifactId>mongo-java-driver</artifactId>        <version>${mongo-java-driver.version}</version></dependency><dependency>    <groupId>org.springframework.data</groupId>    <artifactId>spring-data-mongodb</artifactId>    <version>${spring-data-mongodb.version}</version></dependency>

3、项目结构如下图所示：

4、pom.xml配置如下所示：

<dependencies>        <!-- 日志 -->            <dependency>                <groupId>org.slf4j</groupId>                <artifactId>slf4j-log4j12</artifactId>                <version>${slf4j.version}</version>            </dependency>         <!-- spring -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-webmvc</artifactId>            <version>${spring.version}</version>        </dependency>        <dependency>              <groupId>org.springframework</groupId>              <artifactId>spring-jms</artifactId>            <version>${spring.version}</version>               <scope>compile</scope>          </dependency>          <dependency>            <groupId>org.apache.xbean</groupId>            <artifactId>xbean-spring</artifactId>            <version>${xbean-spring.version}</version>        </dependency>        <!-- <dependency>            <groupId>org.apache.activemq</groupId>            <artifactId>activemq-spring</artifactId>            <version>${spring.version}</version>        </dependency> -->        <dependency>            <groupId>org.apache.httpcomponents</groupId>            <artifactId>httpclient</artifactId>            <version>${httpclient.version}</version>        </dependency>       <dependency>            <groupId>org.mongodb</groupId>            <artifactId>mongo-java-driver</artifactId>            <version>${mongo-java-driver.version}</version>        </dependency>        <dependency>            <groupId>org.springframework.data</groupId>            <artifactId>spring-data-mongodb</artifactId>            <version>${spring-data-mongodb.version}</version>        </dependency>        <dependency>              <groupId>org.springframework</groupId>              <artifactId>spring-test</artifactId>            <version>${spring.version}</version>          </dependency>         <dependency>                <groupId>junit</groupId>                <artifactId>junit</artifactId>                <version>${junit.version}</version>                <scope>test</scope>        </dependency>

5、添加spring相关的配置文件：

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">    <bean        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">        <!-- 允许JVM参数覆盖 -->        <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />        <!-- 忽略没有找到的资源文件 -->        <property name="ignoreResourceNotFound" value="true" />        <!-- 配置资源文件 -->        <property name="locations">            <list>                <value>classpath:config.properties</value>                <value>classpath:common.properties</value>            </list>        </property>    </bean>    <!-- spring 注释代替配置，自动扫描的基础包，将扫描该包以及所有子包下的所有类 -->    <context:component-scan base-package="com.newsoft">        <context:exclude-filter type="annotation"            expression="org.springframework.stereotype.Controller" />    </context:component-scan></beans>

6、添加Mongodb相关的配置文件。

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:context="http://www.springframework.org/schema/context"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:mongo="http://www.springframework.org/schema/data/mongo"       xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans-2.5.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context.xsd        http://www.springframework.org/schema/data/mongo        http://www.springframework.org/schema/data/mongo/spring-mongo.xsd    ">    <!-- 1.7版本+不支持mongo,支持mongo-client,options为client-options -->    <!-- Usage of 'UserCredentials' with 'MongoClient' is no longer supported -->    <!-- 配置mongodb连接池 ,创建mongoClient实例-->    <!--credentials="mongodb://${mongo.user}:${mongo.pwd}@${mongo.host}:${mongo.port}/${mongo    .defaultDbName}"为什么不起作用    如果需要验证,mongo-client需要加这句: credentials="${mongo.user}:${mongo.pwd}@${mongo.defaultDbName}"    -->    <mongo:mongo-client id="mongoClient"  host="${mongo.host}" port="${mongo.port}">        <mongo:client-options                connections-per-host="${mongo.connectionsPerHost}"                min-connections-per-host="${mongo.minConnectionsPerHost}"                threads-allowed-to-block-for-connection-multiplier="${mongo.threadsAllowedToBlockForConnectionMultiplier}"                connect-timeout="${mongo.connectTimeout}"                max-wait-time="${mongo.maxWaitTime}"                socket-keep-alive="${mongo.socketKeepAlive}"                socket-timeout="${mongo.socketTimeout}"                description="${mongo.description}"                max-connection-idle-time="${mongo.maxConnectionIdleTime}"                max-connection-life-time="${mongo.maxConnectionLifeTime}"                heartbeat-socket-timeout="${mongo.heartbeatSocketTimeout}"                heartbeat-connect-timeout="${mongo.heartbeatConnectTimeout}"                min-heartbeat-frequency="${mongo.minHeartbeatFrequency}"                heartbeat-frequency="${mongo.heartbeatFrequency}"        />    </mongo:mongo-client>    <!-- dbname="${mongo.defaultDbName}" host="${mongo.host}"                      port="${mongo.port}" username="${mongo.user}" password="${mongo.pwd}"                      mongo-ref="mongoClient" -->    <mongo:db-factory id="mongoDbFactory"                      dbname="${mongo.defaultDbName}"                      mongo-ref="mongoClient"/>    <!-- 1.Spring提供的mongodb操作模板-->    <mongo:template id="mongoTemplate" db-factory-ref="mongoDbFactory" write-concern="NORMAL"/>    <!-- 2.Spring提供的mongodb操作模板-->    <!--<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">        <constructor-arg ref="mongoDbFactory" />    </bean>-->    <!-- MongoDB GridFS Template 支持，操作mongodb存放的文件 -->    <mongo:mapping-converter id="converter" db-factory-ref="mongoDbFactory"                             base-package="cn.idongjia.web.dao"/>    <mongo:gridFsTemplate id="gridFsTemplcate" db-factory-ref="mongoDbFactory" converter-ref="converter" />    <!-- mongodb bean的仓库目录，会自动扫描扩展了MongoRepository接口的接口进行注入 -->    <mongo:repositories base-package="com.newsoft.model" />    <!--激活注解-->    <bean class="org.springframework.context.annotation.CommonAnnotationBeanPostProcessor"/></beans>

#mongodbmongo.host=127.0.0.1mongo.port=27017mongo.defaultDbName=logmongo.user=liucmongo.pwd=199116mongo.connectionsPerHost=100mongo.threadsAllowedToBlockForConnectionMultiplier=5mongo.minConnectionsPerHost=5#连接超时时间mongo.connectTimeout=10000#等待时间mongo.maxWaitTime=120000#Socket超时时间mongo.socketTimeout=0mongo.socketKeepAlive=truemongo.description= test mongodb databasemongo.maxConnectionIdleTime=1500mongo.maxConnectionLifeTime=0#mongo slavemongo.heartbeatSocketTimeout=1000mongo.heartbeatConnectTimeout=1500mongo.minHeartbeatFrequency=5mongo.heartbeatFrequency=10

本项目将Mongodb相关的增删查改操作进行了一层封装。只需传入所需参数调用即可。

public class ObjectDaoImpl<T> implements ObjectDao<T>{    @Autowired    protected MongoOperations mongoOperations;    @Override    public void save(T t) {        mongoOperations.insert(t);    }    @Override    public T saveReturnT( T t){        mongoOperations.insert(t);        //如果t对象中包含id主键，则插入数据后，返回对象t，包含自增的主键id内容        return t;    }    @Override    public int update(Query query, Update update,Class<T> tclass) {        WriteResult result = mongoOperations.updateFirst(query, update, tclass);        return result.getN();    }    @Override    public Pager page(Pager pager, Query query,Class<T> tclass) {        int skipCount = (pager.getPageNumber() > 0 ? pager.getPageNumber() - 1 : 0) * pager.getPageSize();        query.skip(skipCount);        query.limit(pager.getPageSize());        List<T> list = mongoOperations.find(query, tclass);        pager.setResult(list);        pager.setTotalCount(list.size());        return pager;    }    @Override    public T get(Query query, Class<T> tclass) {        T t = mongoOperations.findOne(query,tclass);        return t;    }    @Override    public void remove(Query query, Class<T> tclass) {        mongoOperations.remove(query, tclass);    }}

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实体类中的注释详解：
@Id - 文档的唯一标识，在mongodb中为ObjectId，它是唯一的，通过时间戳+机器标识+进程ID+自增计数器（确保同一秒内产生的Id不会冲突）构成。

@Document - 把一个java类声明为mongodb的文档，可以通过collection参数指定这个类对应的文档。@Document(collection=”mongodb”) mongodb对应表

@DBRef - 声明类似于关系数据库的关联关系。ps：暂不支持级联的保存功能，当你在本实例中修改了DERef对象里面的值时，单独保存本实例并不能保存DERef引用的对象，它要另外保存，如下面例子的Person和Account。

@Indexed - 声明该字段需要索引，建索引可以大大的提高查询效率。

@CompoundIndex - 复合索引的声明，建复合索引可以有效地提高多字段的查询效率。

@GeoSpatialIndexed - 声明该字段为地理信息的索引。

@Transient - 映射忽略的字段，该字段不会保存到mongodb。

@PersistenceConstructor - 声明构造函数，作用是把从数据库取出的数据实例化为对象。该构造函数传入的值为从DBObject中取出的数据

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具体详情可以下载本项目进行查看。http://download.csdn.net/download/u012151597/9999239