最近在做基於mongodb的spring項目架構,有個問題跟大家分享一下,也方便自己以後能夠用到
先看一個簡單的項目架構:
在架構方面唯一需要說的是採用的是spring的註解:
下面是部分代碼,部分。
/**
* @author jessonlv
* 用戶註冊接口
*/
@Controller
@RequestMapping("/user")
public class UserInfoController {
@Autowired
private UserInfoManager userManager;
//接口文檔
@RequestMapping(method=RequestMethod.GET)
public String list(HttpServletRequest request,HttpServletResponse response){
response.setContentType("text/html;charset=utf-8");
return "user";
}
//檢測用戶信息-根據帳戶
@RequestMapping(value="/check",method=RequestMethod.GET)
public String getUser(HttpServletRequest request,HttpServletResponse response) throws Exception{
//設置HTTP頭
response.setContentType("text/html;charset=utf-8");
//參數獲取
String account=StringUtil.formatStringParameter(request.getParameter("account"), null);
String key=StringUtil.formatStringParameter(request.getParameter("key"), null);//驗證調用方
//參數有效性驗證
if(account==null){
throw new ParameterException();
}
//TODO:key驗證
//查詢對象
BasicDBObject o=new BasicDBObject("account",account);
try {
//取數據庫
DBObject doc=userManager.getUserInfo(o);
//輸出結果
PrintWriter writer=response.getWriter();
writer.write(doc.toString());
} catch (Exception e) {
e.printStackTrace();
//輸出結果
PrintWriter writer=response.getWriter();
writer.write(new BasicDBObject().toString());
}
//db.find(query).skip(pos).limit(pagesize)分頁
return null;
}
粗體部分就是spring的註解。我們得到的接口調用是這個樣子的:http://localhost/ucenter/user/check?account=11&pwd=11111 注意是get請求。
採用mongodb的最大好處中的其中一個就是不用寫bean,只需做一些簡單的配置
我們看spring-servlet.xml 的配置內容
<?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" />
<!-- 啓動Spring MVC的註解功能,完成請求和註解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>
<!-- 導入配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:appconfig.properties</value>
</list>
</property>
</bean>
<!-- 數據源 -->
<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>
上面的都是些常規的配置,最重要的就是數據源部分
<property name="ip" value="localhost"/> //數據源地址
<property name="port" value="27017"/> //端口號
<property name="dbName" value="prop"/> //數據庫名
<property name="tableName" value="userinfo"/>//對應的表明
道理其實還是和bean是一樣的,這在項目啓動的前期都已經映射了。每寫一個dao就配置一個<bean>....</bean>,剩了很多的事兒,而且剛開始的有些不習慣。但是效率挺高,結構清晰。
接口的輸出結果也很簡單:DBObject myDocDbObject = userManager.getUserInfo(repeatAccount);
String str = myDocDbObject.toString(); 是一個json格式的字符。
呵呵,做個小總結,方便忘記了。
so....over,下期我將會總結下mongodb的主從複製
原創文章,轉載請註明出處:http://blog.csdn.net/jessonlv