springmvc+monggodb简单小例子

1.首先安装mongodb

下载地址：

http://www.veryhuo.com/down/html/mongodb.html

1 自定义安装到C:\mongodb目录下。

2 手动在C:\mongodb目录下创建data\db和logs两个文件夹

3 以管理员身份启动cmd,进入到c:\mongodb\bin为当前目录。

c:\mongodb\bin> echo logpath=c:\mongodb\logs\mongodb.log> c:\mongodb\mongod.cfg

c:\mongodb\bin> echo dbpath=c:\mongodb\data\db>> c:\mongodb\mongod.cfg

4

[cpp] view
plaincopy





C:\mongodb\bin>sc create MongoDB binPath= "\"c:\mongodb\bin\mongod.exe\" --service --config=\"c:\mongodb\mongod.cfg\"" DisplayName= "MongoDB 2.6 Stardard" start= "auto"

此时会提示 CreateService 成功

注意输入命令中每个"="后面，都要有个空格，除了--config外

5 net start MongoDB

此时，就成功的创建了自动运行的MongoDB服务。

2 安装mongodb客户端软件

下载地址: http://www.cncrk.com/downinfo/44839.html
解压打开mongodbvue.exe创建数据库链接
3创建一个maven工程
pom.xml

<span style="font-size:10px;"><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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>gy</groupId>
<artifactId>MongDB</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>MongDB Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>3.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>3.2.7.RELEASE</version>

</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>3.2.7.RELEASE</version>

</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>3.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>3.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>3.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>3.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>3.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>3.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>3.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>3.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>3.2.7.RELEASE</version>
</dependency>
<!-- mongodb spring -->
<!-- <dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-mongodb</artifactId>
<version>1.6.1.RELEASE</version>
</dependency> -->
<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId>
<version>2.10.1</version>
</dependency>

<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-mongodb</artifactId>
<version>1.2.1.RELEASE</version>
</dependency>
</dependencies>
<build>
<finalName>MongDB</finalName>
</build>
</project></span><span style="font-size:48px;">
</span>

mongodb.properties

<span style="font-size:10px;">mongo.host=localhost
mongo.port=27017
mongo.dbName=test</span>

spring-datasource.xml

<span style="font-size:10px;"><?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:util="http://www.springframework.org/schema/util"
xmlns:jdbc="http://www.springframework.org/schema/jdbc" 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.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.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/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">

<!-- mongo db配置 -->
<mongo:mongo host="localhost" port="27017" />

<!-- 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" />

<!-- 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>

<!-- 映射转换器，扫描back-package目录下的文件，根据注释，把它们作为mongodb的一个collection的映射 -->
<mongo:mapping-converter base-package="com.mongodb.entity" />

<!-- 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.mongodb.service" />

<context:annotation-config />

</beans></span>

spring-global.xml

<span style="font-size:10px;"><?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">

<!-- 因为spring的context是父子容器，所以会产生冲突，Controller会先进行扫描装配， 而此时的Service还没有进行事务的增强处理，得到的将是原样的Service（没有经过事务加强处理，故而没有事务处理能力）
最后才是applicationContext.xml中的扫描配置进行事务处理 -->

<context:component-scan base-package="com.mongodb.*">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>

<import resource="classpath:spring-datasource.xml" />

</beans></span><span style="font-size:48px;">
</span>

实体类 User.java

<span style="font-size:10px;">import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;
@Document(collection="t_user")
public class User implements Serializable{

private static final long serialVersionUID = -6270568573087300894L;
@Id
private String id;
private String name;
private Integer age;
private Double height;
private Integer type;
private String total;</span>

实现类UserService.java

<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);"></span><pre name="code" class="java">@Service("userService")
public class UserService {
@Autowired
private MongoTemplate mongoTemplate;
public List<User> find(){
return mongoTemplate.findAll(User.class);
}
/**
* 添加对象
* @param user
* @return
*/
public Boolean insert(User user){
Boolean result=false;
try{
mongoTemplate.insert(user);
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}
/**
* 删除对象
* @param user
* @return
*/
public Boolean delete(User user) {
Boolean result=false;
try{
mongoTemplate.remove(user);
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}
/**
* 批量添加对象
* @param users
* @return
*/
public Boolean insertAll(List<User> users) {
Boolean result=false;
try{
mongoTemplate.insertAll(users);
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}
/**
* 统计
* @param users
* @return
*/
public Boolean count() {
Boolean result=false;
try{
DBCollection coll = mongoTemplate.getCollection("t_user");
String map = "function() { emit(this._class, {count:1});}";
String reduce = "function(key, values) {" +
"var total = 0;" +
"for(var i=0;i<values.length;i++){" +
"total += values[i].count;" +
"}return {count:total};}";
String result2 = "resultCollection";
MapReduceOutput mapReduceOutput = coll.mapReduce(map,
reduce.toString(), result2, null);
DBCollection resultColl = mapReduceOutput.getOutputCollection();
DBCursor cursor = resultColl.find();
while (cursor.hasNext()) {
System.out.println(cursor.next());
}
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}
/**
* 求和
* @return
*/
public Boolean sum() {
Boolean result=false;
try{
DBCollection coll = mongoTemplate.getCollection("t_user");
String map = "function() { emit(this._class, {sum:this.age});}";
String reduce = "function(key, values) {" +
"var total = 0;" +
"for(var i=0;i<values.length;i++){" +
"total += values[i].sum;" +
"}return {sum:total};}";
String result2 = "resultCollection";
MapReduceOutput mapReduceOutput = coll.mapReduce(map,
reduce.toString(), result2, null);
DBCollection resultColl = mapReduceOutput.getOutputCollection();
DBCursor cursor = resultColl.find();
while (cursor.hasNext()) {
DBObject obj=cursor.next();
System.out.println(obj.get("value"));
}
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}
/**
* 最大值
* @return
*/
public Boolean max() {
Boolean result=false;
try{
Query query =new Query();
query.with(new Sort(Direction.DESC, "age"));
query.limit(1);
User u=mongoTemplate.findOne(query, User.class);
System.out.println(u.getAge());
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}
/**
* 最小值
* @return
*/
public Boolean min() {
Boolean result=false;
try{
Query query =new Query();
query.with(new Sort(Direction.ASC, "age"));
query.limit(1);
User u=mongoTemplate.findOne(query, User.class);
System.out.println(u.getAge());
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}
/**
* 平均值
* @return
*/
public Boolean avg() {
Boolean result=false;
try{
DBCollection coll = mongoTemplate.getCollection("t_user");
String map = "function() { emit(this._class, {avg:this.age});}";
String reduce = "function(key, values) {" +
"var total = 0;" +
"for(var i=0;i<values.length;i++){" +
"total += values[i].avg;" +
"}return {avg:total/values.length};}";
String result2 = "resultCollection";
MapReduceOutput mapReduceOutput = coll.mapReduce(map,
reduce.toString(), result2, null);
DBCollection resultColl = mapReduceOutput.getOutputCollection();
DBCursor cursor = resultColl.find();
while (cursor.hasNext()) {
DBObject obj=cursor.next();
System.out.println(obj.get("value"));
}
result=true;
}catch(Exception e){
e.printStackTrace();
}
return result;
}
}

测试类

public class TestMongoDB  {
private ClassPathXmlApplicationContext context;
UserService service=null;
public TestMongoDB() {
String configLocation = "spring-global.xml";
context = new ClassPathXmlApplicationContext(configLocation);
context.start();
service=(UserService)context.getBean("userService");
}
/**
* 添加一个对象
*/

public void insertOne(){
User user =new User();
user.setId("4");
user.setName("333");
user.setAge(50);
user.setHeight(208.8d);
user.setType(1);
System.out.println(service.insert(user));
}
/**
* 删除一个对象
*/

public void deleteOne(){
User user =new User();
for(Integer i=0;i<10;i++){
user.setId(i.toString());
System.out.println(service.delete(user));
}

}
/**
* 添加对象集合
*/

public void insertAll(){
List<User> users=new ArrayList<User>();
User user =null;
for(Integer i=0;i<10;i++){
user=new User();
user.setId(i.toString());
user.setName("张"+i);
user.setAge(i);
user.setHeight(160d+i);
user.setType(i/2==0?0:1);
users.add(user);
}
System.out.println(service.insertAll(users));
}

public void Count(){
System.out.println(service.count());
}

public void Sum(){
System.out.println(service.sum());
}
@Test
public void Max(){
System.out.println(service.max());
}
public void Min(){
System.out.println(service.min());
}

public void Avg(){
System.out.println(service.avg());
}
}