mongodb在spring中的配置支持注解 @Configuration和xml的方式
MongoTemplate辅助类扩展了Mongo operations的生产效率，提供了document和pojo类型之间的转换
添加依赖到pom.xml
你可以将日志级别设置成debug来查看更多的日志信息
log4j.category.org.springframework.data.document.mongodb=DEBUG
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %40.40c:%4L - %m%n
app-mongodb.xml
< xml version="1.0" encoding="UTF-8" >
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/data/mongo
http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
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" />
Person.java
复制代码
package com.dempe.summer.person.model;
import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;
/**
* @author: Zheng Dongping
* @version 1.0 date: 2013-12-20
*/
@Document(collection = "person")
public class Person {
@Id
private String id;
private String name;
private Integer age;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}
复制代码
How the '_id' field is handled in the mapping layer
mongoDB默认会为所有的document生成_id字段，MongoMappingConverter类有确定的规则去管理从java类到"_id"字段的映射，
当一个字段被@Id注解标注，或者这个字段的名字为id，那么这个字段将会为映射成"_id"
PersonRepository.javapackage com.dempe.summer.person.persist;
import java.util.List;
import org.bson.types.ObjectId;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.data.mongodb.repository.Query;
import com.dempe.summer.person.model.Person;
/**
* @author: Zheng Dongping
* @version 1.0 date: 2013-12-20
*/
public interface PersonRepository extends MongoRepository {
//
//