MongoDB:mongodb在spring项目中的配置

最近在做基于mongodb的spring项目架构,有个问题跟大家分享一下,也方便自己以后能够用到

先看一个简单的项目架构:


在架构方面唯一需要说的是采用的是spring的注解:

下面是部分代码,部分。

/**
 * @author jessonlv
 * 用户注册接口
 */
@Controller
@RequestMapping("/user")  
public class UserInfoController {
	@Autowired
	private UserInfoManager userManager;
	//接口文档
	@RequestMapping(method=RequestMethod.GET)
	public String list(HttpServletRequest request,HttpServletResponse response){
		 response.setContentType("text/html;charset=utf-8");  
		return "user";
	}
	//检测用户信息-根据帐户
	@RequestMapping(value="/check",method=RequestMethod.GET)
    public String getUser(HttpServletRequest request,HttpServletResponse response) throws Exception{
		//设置HTTP头 
		 response.setContentType("text/html;charset=utf-8");  
		 //参数获取
		 String account=StringUtil.formatStringParameter(request.getParameter("account"), null);
		 String key=StringUtil.formatStringParameter(request.getParameter("key"), null);//验证调用方
		 //参数有效性验证
		 if(account==null){
			 throw new ParameterException();
		 }
		 //TODO:key验证
		 
		 //查询对象
		 BasicDBObject o=new BasicDBObject("account",account);
		 try {
			//取数据库
			DBObject doc=userManager.getUserInfo(o);
			//输出结果
			PrintWriter writer=response.getWriter();
			writer.write(doc.toString());
		} catch (Exception e) {
			e.printStackTrace();
			//输出结果
			PrintWriter writer=response.getWriter();
			writer.write(new BasicDBObject().toString());
		}
		//db.find(query).skip(pos).limit(pagesize)分页
		return null;
    }
粗体部分就是spring的注解。我们得到的接口调用是这个样子的:http://localhost/ucenter/user/check?account=11&pwd=11111  注意是get请求。

采用mongodb的最大好处中的其中一个就是不用写bean,只需做一些简单的配置

我们看spring-servlet.xml 的配置内容

<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:util="http://www.springframework.org/schema/util" xmlns:p="http://www.springframework.org/schema/p"  
	xmlns:cache="http://www.springframework.org/schema/cache" xmlns:jee="http://www.springframework.org/schema/jee" 
	xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tool="http://www.springframework.org/schema/tool"
	xsi:schemaLocation=" 
	http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
	http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
	http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
	http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
	http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd
	http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
	http://www.springframework.org/schema/tool http://www.springframework.org/schema/tool/spring-tool-3.1.xsd
	http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.1.xsd" 
	default-autowire="byName" default-lazy-init="true">
	<context:annotation-config />
	<context:component-scan base-package="com.ishowchina.user" />
	<!-- 启动Spring MVC的注解功能,完成请求和注解POJO的映射 -->  
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" /> 
    <bean id="viewResolver"  
        class="org.springframework.web.servlet.view.InternalResourceViewResolver"  
        p:prefix="/" p:suffix=".html" />
    <bean id="multipartResolver"  
          class="org.springframework.web.multipart.commons.CommonsMultipartResolver"  
          p:defaultEncoding="utf-8" />   
    <!-- 支持json    --> 
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">  
        <property name="messageConverters">  
            <list>  
                <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean>  
            </list>  
        </property>  
    </bean>
    <!-- 导入配置文件 -->
    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="locations">  
            <list>  
                <value>classpath:appconfig.properties</value>
            </list>  
        </property>  
    </bean>
    <!-- 数据源 -->
    <bean id="dataSource" class="com.ishowchina.user.dao.DataSource">
    	<property name="ip" value="localhost"/> 
    	<property name="port" value="27017"/> 
    </bean>
    <bean id="userDao" class="com.ishowchina.user.dao.impl.UserInfoDaoImpl">
    	<property name="dbName" value="prop"/> 
    	<property name="tableName" value="userinfo"/>
    	<property name="dataSource" ref="dataSource"/> 
    </bean>
    <bean id="stationDao" class="com.ishowchina.user.dao.impl.StationInfoDaoImpl">
    	<property name="dbName" value="prop"/> 
    	<property name="tableName" value="stationinfo"/>
    	<property name="dataSource" ref="dataSource"/> 
    </bean>
</beans>

上面的都是些常规的配置,最重要的就是数据源部分

<property name="ip" value="localhost"/> //数据源地址
 <property name="port" value="27017"/> //端口号

<property name="dbName" value="prop"/> //数据库名
<property name="tableName" value="userinfo"/>//对应的表明

道理其实还是和bean是一样的,这在项目启动的前期都已经映射了。每写一个dao就配置一个<bean>....</bean>,剩了很多的事儿,而且刚开始的有些不习惯。但是效率挺高,结构清晰。

接口的输出结果也很简单:DBObject myDocDbObject = userManager.getUserInfo(repeatAccount);

String str = myDocDbObject.toString(); 是一个json格式的字符。

呵呵,做个小总结,方便忘记了。

so....over,下期我将会总结下mongodb的主从复制

原创文章,转载请注明出处:http://blog.csdn.net/jessonlv


posted @ 2013-12-24 20:17  jessonlv  阅读(269)  评论(0编辑  收藏  举报