SpringMVC+Mongo简单配置

<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>com.feng</groupId>    <artifactId>SpringMongo</artifactId>    <version>0.0.1-SNAPSHOT</version>    <packaging>war</packaging>    <name>SpringMongo</name>    <build>      <sourceDirectory>src</sourceDirectory>      <plugins>        <plugin>          <artifactId>maven-war-plugin</artifactId>          <version>2.6</version>          <configuration>            <warSourceDirectory>WebContent</warSourceDirectory>            <failOnMissingWebXml>false</failOnMissingWebXml>          </configuration>        </plugin>        <plugin>          <artifactId>maven-compiler-plugin</artifactId>          <version>3.3</version>          <configuration>            <source>1.7</source>            <target>1.7</target>          </configuration>        </plugin>      </plugins>    </build>    <dependencies>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-beans</artifactId>            <version>4.2.3.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context</artifactId>            <version>4.2.3.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-core</artifactId>            <version>4.2.3.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-web</artifactId>            <version>4.2.3.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-webmvc</artifactId>            <version>4.2.3.RELEASE</version>        </dependency>        <dependency>            <groupId>commons-logging</groupId>            <artifactId>commons-logging</artifactId>            <version>1.2</version>        </dependency>        <dependency>          <groupId>org.springframework.data</groupId>          <artifactId>spring-data-mongodb</artifactId>          <version>1.8.2.RELEASE</version>      </dependency>    </dependencies>  </project>

<?xml version="1.0" encoding="UTF-8"?>  <beans xmlns="http://www.springframework.org/schema/beans"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"      xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">                    <!-- 识图解析器 -->      <bean          class="org.springframework.web.servlet.view.InternalResourceViewResolver">            <property name="prefix" value="/WEB-INF/view/"></property>          <property name="suffix" value=".jsp"></property>        </bean>    </beans>

applicationContext.xml

<?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:context="http://www.springframework.org/schema/context"      xmlns:mongo="http://www.springframework.org/schema/data/mongo"      xmlns:mvc="http://www.springframework.org/schema/mvc"      xmlns:tx="http://www.springframework.org/schema/tx"      xmlns:util="http://www.springframework.org/schema/util"      xsi:schemaLocation="http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo-1.8.xsd          http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd          http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd          http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd          http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">            <mvc:annotation-driven></mvc:annotation-driven>            <!-- 扫描注解的目录 -->      <context:component-scan base-package="com.feng.controller"></context:component-scan>        <!--     这一种可以指定数据库的ip和端口      <mongo:mongo id="mongoDB" host="127.0.0.1" port="27017"></mongo:mongo>      <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">          <constructor-arg ref=“mongoDB" />          <constructor-arg value=“test" />　 数据库的名称           <property name="writeConcern" value="SAFE" />      </bean> -->                  <!-- 默认访问127.0.0.1：27017 -->      <mongo:db-factory id="mongoDbFactory" dbname="test"/>      <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">          <constructor-arg ref="mongoDbFactory" />          <property name="writeConcern" value="SAFE" />      </bean>        </beans>

web.xml

<?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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">    <display-name>SpringMongo</display-name>    <welcome-file-list>      <welcome-file>index.html</welcome-file>      <welcome-file>index.htm</welcome-file>      <welcome-file>index.jsp</welcome-file>      <welcome-file>default.html</welcome-file>      <welcome-file>default.htm</welcome-file>      <welcome-file>default.jsp</welcome-file>    </welcome-file-list>      <!-- 配置拦截器，然后需要springmvc的配置文件 -->      <servlet>          <servlet-name>springDispatcherServlet</servlet-name>          <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>          <init-param>              <param-name>contextConfigLocation</param-name>              <param-value>classpath:spring/spring-mvc.xml</param-value>          </init-param>          <load-on-startup>1</load-on-startup>      </servlet>        <!-- 配置拦截器，拦截所有.action的请求 -->      <servlet-mapping>          <servlet-name>springDispatcherServlet</servlet-name>          <url-pattern>*.action</url-pattern>      </servlet-mapping>            <!-- 加载spring的配置文件 -->      <context-param>          <param-name>contextConfigLocation</param-name>          <param-value>classpath:spring/applicationContext.xml</param-value>      </context-param>        <!-- Bootstraps the root web application context before servlet initialization -->      <listener>          <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>      </listener>      </web-app>

package com.feng.controller;    import org.springframework.beans.factory.annotation.Autowired;  import org.springframework.data.mongodb.core.MongoTemplate;  import org.springframework.stereotype.Controller;  import org.springframework.web.bind.annotation.RequestMapping;    import com.mongodb.BasicDBObject;  import com.mongodb.DBCollection;  import com.mongodb.DBCursor;  import com.mongodb.DBObject;    @Controller  @RequestMapping("/")  public class Test {            @Autowired      private MongoTemplate mt; //自动注入MongoTemplate            @RequestMapping("/index")      public String index(){                    return "index";      }        }

这是我的index.jsp,放在了WEB-INF/view目录下

<%@ page language="java" contentType="text/html; charset=UTF-8"  pageEncoding="UTF-8"%>  <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  <html>  <head>  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  <title>Insert title here</title>  </head>  <body>     <h1>index</h1>     </body>  </html>

首先测试获取所有数据，在test类中这样写

        DBCollection db = mt.getCollection("user"); //获取test数据库里面的user这个collection            DBCursor dc = db.find();                    while (dc.hasNext()) {              DBObject obj = dc.next();                            System.out.println(obj);          }

控制台输出所有数据（我之前测试Mongo时乱填的）

{ "_id" : { "$oid" : "56aba53174a5c31c6a1be2b7"} , "name" : "feng" , "address" : { "street" : "2 Avenue" , "zipcode" : "10075" , "building" : "1480" , "coord" : [ -73.9557413 , 40.7720266]}}  { "_id" : { "$oid" : "56ac73bc945e7d0dc812d9ba"} , "family" : { "one" : "BOB"}}  { "_id" : { "$oid" : "56ac73cf945e7d28f4788954"} , "name" : "hua" , "family" : { "one" : "BOB" , "two" : "Bob" , "three" : "Jack"} , "phone" : "123456"}  { "_id" : { "$oid" : "56ac790c945e7d030886611b"} , "name" : "hua" , "family" : { "one" : "nick" , "two" : "Bob" , "three" : "Jack"} , "phone" : "123456"}

测试条件查询，这是需要用到DBObject以及他的实现类BasicDBObject，参见 http://api.mongodb.org/java/2.3/com/mongodb/BasicDBObject.html

这个相当于MongoDB中的Document类，而且用法完全相同，这里可以参考 https://docs.mongodb.org/getting-started/java/query/ mongo官方给的一些教程（增删改查都相似），我只给出一个查询和更改的例程

部分代码

DBObject dbo = new BasicDBObject();  dbo.put("name", "feng"); //放入你要查询的条件     DBCursor dc = db.find(dbo);    //也可以db.find(new BasicDBObject().append(key,val));  //然后输出dc即可

WriteResult wr = db.update(new BasicDBObject().append("name", "hua"), new BasicDBObject().append("$set",new BasicDBObject().append("family.one", "BOB")));//这一种是仅更新family.one这一个字段  db.update(new BasicDBObject().append("name", "a"), new BasicDBObject().append("name", "nihao").append("phone", "123456"));  //这一种相当于替换，比如原来的数据是{"name":"a","address":"china"}执行后变成了{"name":"nihao","phone":"123456"}