spring MVC 整合mongodb

Spring Mongodb

目录
1 SPRING整合MONGODB 1
1.1 环境准备 1
1.2 包依赖 1
1.3 配置 2
2 案列 5
2.1 SPRING MVC整合MONGODB代码案例 5

1 Spring整合Mongodb
1.1 环境准备
1. mongodb官网 http://www.mongodb.org/，下载mongodb安装包和mongodb的java驱动包。 mongodb安装包（下载地址http://www.mongodb.org/downloads）。Mongodb的安装和使用可见mongodb权威指南。
mongodb驱动包（下载地址https://github.com/mongodb/mongo-java-driver/downloads）
2. Spring下载中心（http://www.springsource.org/download/community）下载spring，spring-data-mongodb，spring-data-commons包。

1.2 包依赖
项目所需依赖包如下：
Mongodb驱动包：
mongo-2.8.0.jar
spring包：
aopalliance-1.0.jar
commons-logging-1.1.jar
org.springframework.aop-3.1.RELEASE.jar
org.springframework.asm-3.1.RELEASE.jar
org.springframework.beans-3.1.RELEASE.jar
org.springframework.context-3.1.RELEASE.jar
org.springframework.context.support-3.1.RELEASE.jar
org.springframework.core-3.1.RELEASE.jar
org.springframework.expression-3.1.RELEASE.jar
org.springframework.transaction-3.1.RELEASE.jar
org.springframework.web-3.1.RELEASE.jar
org.springframework.web.servlet-3.1.RELEASE.jar
log4j-1.2.16.jar
slf4j-log4j12-1.6.4.jar
slf4j-api-1.6.4.jar
Spring Data Mongodb包：
spring-data-mongodb-1.1.0.M2.jar
Spring Data Commons包：
spring-data-commons-core-1.4.0.M1.jar



1.3 配置

（1）配置Web.xml

Java代码

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>TestSpringMongodb</display-name>

<!— spring mvc dispatcher servlet -->
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>

</web-app>

注意：url-pattern的配置为‘/’。

（2）配置applicationContext.xml

Java代码

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> 
<!-- Activates various annotations to be detected in bean classes -->
<context:annotation-config />

<!-- Scans the classpath for annotated components that will be auto-registered as Spring beans.For example @Controller and @Service . Make sure to set the correct base-package-->
<context:component-scan base-package="bgi.contrl" />
<context:component-scan base-package="bgi.service" />

<!-- Configures the annotation-driven Spring MVC Controller programming model.Note that, with Spring 3.0, this tag works in Servlet MVC only!  -->
<mvc:annotation-driven />

<!-- Loads MongoDB configuraton -->
<import resource="mongo-config.xml"/>

</beans>

（3）配置mongo-config.xml

Java代码

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
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-3.0.xsd http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo.xsd"> 
<!-- Default bean name is 'mongo' -->
<mongo:mongo host="localhost" port="27017"/>

<!-- Offers convenience methods and automatic mapping between MongoDB JSON documents and your domain classes. -->
<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
<constructor-arg ref="mongo"/>
<constructor-arg name="databaseName" value="test"/>
</bean>

</beans>

注意：官方文档和案例配置都是旧版本的配置案例，spring-data-mongo从1.0.0.M1到1.0.0.M3的版本叫做Spring Data Document。1.0.0.M4开始更名为Spring Data MongoDB 1.0.0 M4，不过官网并没有特别说明，乍一看有点莫名其妙，尤其是MongoTemplate从org.springframework.data.document.mongod移动到org.springframework.data.mongodb.core，官网的HelloWorldExample却还是用org.springframework.data.document.mongodb做配置案例。多少会导致使用时的误导。

（4）配置spring-servlet.xml

Java代码

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> 
<!-- Declare a view resolver -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/" p:suffix=".jsp" />

</beans>

注意：spring-servlet.xml的命名是根据web.xml中配置spring DispatcherServlet的名字 （<servlet-name>spring</servlet-name>）加上-servlet命名的。

2 案列
2.1 Spring mvc整合mongodb代码案例

（1），control层

Java代码

package bgi.contrl;

import java.util.logging.Logger;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import bgi.pojo.User;
import bgi.service.UserService;

@Controller
@RequestMapping("/user")
public class UserCtrl {

private static Logger logger = Logger.getLogger(UserCtrl.class.getName());

@Autowired
UserService userService;

@RequestMapping("/index")
public ModelAndView index(){
ModelAndView mav = new ModelAndView("/user/index");
return mav;
}

@RequestMapping("/save")
public ModelAndView saveUser(User user){

ModelAndView mav = new ModelAndView("/user/index");

logger.info("save:"+user);

userService.saveUser(user);

return mav;
}

@RequestMapping("/find")
public ModelAndView findUser(User user){

ModelAndView mav = new ModelAndView("/user/index");

user = userService.findUserByName(user.getName());

logger.info("find:"+user);

return mav;
}

}
（2），service层
Java代码
package bgi.service;

import org.springframework.beans.factory.annotation.Autowired;
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.stereotype.Service;

import bgi.pojo.User;

@Service
public class UserService {

private static String USER_COLLECTION = "user";

@Autowired
MongoTemplate mongoTemplate;

/**
*
* @param user
*/
public void saveUser(User user){

mongoTemplate.save(user, USER_COLLECTION);

}

/**
*
* @param name
* @return
*/
public User findUserByName(String name){

return mongoTemplate.findOne(new Query(Criteria.where("name").is(name)), User.class, USER_COLLECTION);

}

}

Java代码

package bgi.pojo;

import java.io.Serializable;

import org.springframework.data.annotation.Id;

public class User implements Serializable{

private static final long serialVersionUID = 1L;

@Id
String uid;
String name;
int age;

public String getUid() {
return uid;
}
public void setUid(String uid) {
this.uid = uid;
}
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:{uid:"+this.uid+",name:"+this.name+",age:"+this.age+"}}";
}

}

http://localhost:8080/TestSpringMongodb/user/save?name=xiaohong&age=23
save:{USER:{uid:5020bef0fe7d16eb86275c7a,name:xiaohong,age:23}}
http://localhost:8080/TestSpringMongodb/user/find?name=xiaohong
find:{USER:{uid:5020bef0fe7d16eb86275c7a,name:xiaohong,age:23}}