Spring整合MongoDB详细讲解（maven项目）

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>

<groupId>SpringMongo</groupId>
<artifactId>SpringMongo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>SpringMongo</name>
<url>http://maven.apache.org</url>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.9</version>
<scope>test</scope>
</dependency>

<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.7.RELEASE</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-mongodb</artifactId>
<version>1.7.2.RELEASE</version>
</dependency>
</dependencies>
</project>
applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" 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-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo.xsd">
<mongo:mongo id="mongo" host="127.0.0.1" port="27017">
<!-- 一些连接属性的设置可以不配置用默认的 -->
<mongo:options connections-per-host="64"
threads-allowed-to-block-for-connection-multiplier="100"
connect-timeout="900000" max-wait-time="1200000" auto-connect-retry="true"
socket-keep-alive="true" socket-timeout="1200000" slave-ok="true"
write-number="1" write-timeout="0" write-fsync="true" />
</mongo:mongo>
<!-- mongo的工厂，通过它来取得mongo实例,dbname为mongodb的数据库名，没有的话会自动创建 -->
<mongo:db-factory dbname="test" mongo-ref="mongo" username="" password="" />
<!-- mongodb的主要操作对象，所有对mongodb的增删改查的操作都是通过它完成 -->
<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
<constructor-arg name="mongoDbFactory" ref="mongoDbFactory" />
</bean>
</beans>
User.java

package com.springmongo.entity;
import org.springframework.data.mongodb.core.mapping.Document;

@Document(collection="users")
public class User {
private String name;
private int age;
public User() {
}
public User(String name, int age) {
this.name = name;
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}

@Override
public String toString() {
return "User [name=" + name + ", age=" + age + "]";
}

}
App.java

package com.springmongo;

import java.util.List;
import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.data.domain.Sort;
import org.springframework.data.domain.Sort.Direction;
import org.springframework.data.domain.Sort.Order;
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.data.mongodb.core.query.Update;
import com.springmongo.entity.User;

public class App
{
private static MongoTemplate template;
static{
ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
template = (MongoTemplate) applicationContext.getBean("mongoTemplate");
}
@Test
public void findAll(){
List<User> list = template.findAll(User.class);
for (User user : list) {
System.out.println(user.toString());
}
}
@Test
public void findAllSortByAge(){
Query query=new Query();
query.with(new Sort(new Order(Direction.DESC,"age")));
List<User> list = template.find(query,User.class);
for (User user : list) {
System.out.println(user.toString());
}
}
@Test
public void findByCondition(){
List<User> list = template.find(new Query(Criteria.where("name").is("小宝").
andOperator(Criteria.where("age").is(301))),
User.class);
for (User user : list) {
System.out.println(user.toString());
}
}
@Test
public void limit(){
List<User> list = template.find(new Query().skip(1).limit(3), User.class);
for (User user : list) {
System.out.println(user.toString());
}
}
@Test
public void count(){
long count = template.count(new Query(Criteria.where("name").is("小宝")), User.class);
System.out.println(count);
}
@Test
public void update(){
template.updateMulti(new Query(Criteria.where("age").gt(30)),
new Update().set("name", "小宝"),
User.class);
findAll();
}
@Test
public void insert(){
User user=new User("小奇", 45);
template.insert(user, "users");
findAll();
}
@Test
public void delete(){
template.remove(new Query(Criteria.where("age").is(20)), User.class);
findAll();
}
}