spring data for mongo
一、 运行环境：
- MongoDB 1.4或更高版本
- JDK1.5或更高版本
- Sping3X或更高版本
二 、MAVEN配置
<dependencies> <!-- other dependency elements omitted --> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-mongodb</artifactId> <version>1.1.0.RELEASE</version> </dependency> </dependencies>
三、spring 配置
<!--指定配置文件地址-->
<context:property-placeholder location="classpath:/mongo.properties"/>
<mongo:mongo id="mongo" host="${${mongo.host}}" port="${${mongo.port}}">
<mongo:options
connections-per-host="${${mongo.connectionsPerHost}}"
threads-allowed-to-block-for-connection-multiplier="${${mongo.threadsAllowedToBlockForConnectionMultiplier}}"
connect-timeout="${${mongo.connectTimeout}}"
max-wait-time="${${mongo.maxWaitTime}}"
auto-connect-retry="${${mongo.autoConnectRetry}}"
socket-keep-alive="${${mongo.socketKeepAlive}}"
socket-timeout="${${mongo.socketTimeout}}"
slave-ok="${${mongo.slaveOk}}"
write-number="1"
write-timeout="0"
write-fsync="true"
/>
</mongo:mongo>
<bean id="userCredentials" class="org.springframework.data.authentication.UserCredentials">
<description>认证口令</description>
<constructor-arg name="username" value="${${mongo.username}}"/>
<constructor-arg name="password" value="${${mongo.password}}"/>
</bean>
<bean name="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
<constructor-arg name="mongo" ref="mongo"/>
<constructor-arg name="userCredentials" ref="userCredentials"/>
<constructor-arg name="databaseName" value="nq-s2s"/>
</bean>
四、properties配置文件
mongo.host=192.168.0.251 mongo.port=27017 mongo.connectionsPerHost=8 mongo.threadsAllowedToBlockForConnectionMultiplier=4 mongo.connectTimeout=1000 mongo.maxWaitTime=1500 mongo.autoConnectRetry=true mongo.socketKeepAlive=true mongo.socketTimeout=1500 mongo.slaveOk=true mongo.username=*** mongo.password=*** mongo.dbname=***
五、JAVABEAN映射
AdCenter.java是一个标准的javaBean，采用注解的方式实现ORM映射。@Document、@Id是必要的两个注解，@Document映射Mongodb中的Collection，@Id映射指定Collection中的标识_id。
其他注解标签有:@Indexed索引、@Transient不映射此属性
import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;
@Document(collection = "adCenterDeduction")
public class AdCenter {
@Id
private String id;
private String business;
private String adCenter;
private int deductNum;
private int requestNum;
public String getBusiness() {
return business;
}
public void setBusiness(String business) {
this.business = business;
}
public String getAdCenter() {
return adCenter;
}
public void setAdCenter(String adCenter) {
this.adCenter = adCenter;
}
public int getDeductNum() {
return deductNum;
}
public void setDeductNum(int deductNum) {
this.deductNum = deductNum;
}
public int getRequestNum() {
return requestNum;
}
public void setRequestNum(int requestNum) {
this.requestNum = requestNum;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public AdCenter() {
}
public AdCenter(String business, String adCenter, int deductNum, int requestNum) {
this.business = business;
this.adCenter = adCenter;
this.deductNum = deductNum;
this.requestNum = requestNum;
}
@Override
public String toString() {
return "AdCenter [id=" + id + "business=" + business + ", adCenter=" + adCenter
+ ", deductNum=" + deductNum + ", requestNum=" + requestNum
+ "]";
}
}
六、测试
@Before
public void setUp() throws Exception {
System.setProperty("NetQinServerType", "REL");
System.setProperty("NetQinServerLocation", "C");
}
@Test
public void testAdCenter() throws UnknownHostException {
ApplicationContext ctx = new ClassPathXmlApplicationContext("spring-dao.xml文件");
MongoOperations mongoOperation = (MongoOperations) ctx.getBean("mongoTemplate");
AdCenter adCenter = new AdCenter("ms","test",99,98);
mongoOperation.insert(adCenter);
assert adCenter.getId()!=null;
System.out.println("newAdCenter:"+adCenter.toString());
Query query = new Query(Criteria.where("business").is(adCenter.getBusiness()));
query.addCriteria(Criteria.where("adCenter").is(adCenter.getAdCenter()));
//查找
AdCenter exsitAdCenter = mongoOperation.findOne(query,AdCenter.class);
assert exsitAdCenter!=null;
System.out.println("exsitAdCenter:"+exsitAdCenter.toString());
//修改
Update update = new Update().set("deductNum", 0);
AdCenter modifyAd = mongoOperation.findAndModify(query, update, AdCenter.class);
assert modifyAd.getDeductNum()==exsitAdCenter.getDeductNum();
System.out.println("beforeModifyAdCenter:"+exsitAdCenter.toString());
exsitAdCenter = mongoOperation.findOne(query,AdCenter.class);
assert exsitAdCenter!=null&&exsitAdCenter.getDeductNum()==0;
System.out.println("AfterModifyAdCenter:"+exsitAdCenter.toString());
//自增
Update incUpdate = new Update().inc("deductNum", 1);
mongoOperation.findAndModify(query, incUpdate, AdCenter.class);
exsitAdCenter = mongoOperation.findOne(query,AdCenter.class);
assert exsitAdCenter!=null&&exsitAdCenter.getDeductNum()==1;
System.out.println("AfterIncAdCenter:"+exsitAdCenter.toString());
//删除
mongoOperation.findAndRemove(query,AdCenter.class);
}
七、测试输出
newAdCenter:AdCenter [id=51b4581bb2e9ac8f62684366business=ms, adCenter=test, deductNum=99, requestNum=98] exsitAdCenter:AdCenter [id=51b4581bb2e9ac8f62684366business=ms, adCenter=test, deductNum=99, requestNum=98] beforeModifyAdCenter:AdCenter [id=51b4581bb2e9ac8f62684366business=ms, adCenter=test, deductNum=99, requestNum=98] AfterModifyAdCenter:AdCenter [id=51b4581bb2e9ac8f62684366business=ms, adCenter=test, deductNum=0, requestNum=98] AfterIncAdCenter:AdCenter [id=51b4581bb2e9ac8f62684366business=ms, adCenter=test, deductNum=1, requestNum=98]
八、参考文档
http://www.springsource.org/spring-data/mongodbhttp://static.springsource.org/spring-data/mongodb/docs/current/reference/html/mongo.core.html#mongodb-connectors
http://static.springsource.org/spring-data/mongodb/docs/current/reference/html/
https://github.com/jreijn/spring-mongo-demo