第一步、配置實體Bean:
@Entity
@Table(name = "t_bd_city")
public class City extends BaseObject {
/**
* 省份
*/
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "fprovinceid")
private Province province;
}
第二步、手動提交保存方法:
public abstract class CoreDaoHibernate<Entity extends CoreObject> implements CoreObjectDao<Entity> {
/**
* Log variable for all child classes. Uses LogFactory.getLog(getClass())
* from Commons Logging
*/
protected final Log log = LogFactory.getLog(getClass());
private Class<Entity> persistentClass ;
private HibernateTemplate hibernateTemplate;
private SessionFactory sessionFactory;
public CoreDaoHibernate(){
Class<?> c = this.getClass();
Type t = c.getGenericSuperclass();
if(t instanceof ParameterizedType){
this.persistentClass = (Class<Entity>)((ParameterizedType) t).getActualTypeArguments()[0];
}
}
public HibernateTemplate getHibernateTemplate() {
return this.hibernateTemplate;
}
public SessionFactory getSessionFactory() {
return this.sessionFactory;
}
@Autowired
@Required
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
this.hibernateTemplate = new HibernateTemplate(sessionFactory);
}
/**
* {@inheritDoc}
*/
@Override
public Entity save(Entity object) {
Entity result = hibernateTemplate.merge(object);
hibernateTemplate.flush();
return result;
}
}
第三步、配置web.xml
<filter>
<filter-name>lazyLoadingFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
<init-param>
<param-name>sessionFactoryBeanName</param-name>
<param-value>sessionFactory</param-value>
</init-param>
<init-param>
<param-name>singleSession</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>flushMode</param-name>
<param-value>AUTO</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>lazyLoadingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
posted @
2012-06-18 23:24 民工二代 閱讀(312) |
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摘要: 在線創(chuàng)建Oracle分區(qū)表
第一步,檢查源表是否可以在線重定義;
第二步、創(chuàng)建一張分區(qū)表做為中間表;
第三步、拷備源表中的記錄;
第四步、同步更新數(shù)據(jù);
第五步、轉(zhuǎn)換完成
閱讀全文
posted @
2012-06-18 09:23 民工二代 閱讀(351) |
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最近因為開發(fā)需要,自己做了一個小的Demo部署在網(wǎng)上,具體網(wǎng)址
http://www.17chuxing.com,實現(xiàn)一個類似公交查詢的功能,目前基本上能夠正常運行。
現(xiàn)在總結(jié)一下,以便以后查詢使用;
一、技術(shù)方面
1、demo的整體技術(shù)結(jié)構(gòu)采用比較簡單的Struts+spring+hibernate,struts 可以定義全局的異常、返回值、攔截器,hibernate采用統(tǒng)一的Spring-hibernate模板進(jìn)行數(shù)據(jù)提交,減少開發(fā)量。如果采用hiberante懶加載方式,需要手工flush(),web.xml需要增加lazyLoadingFilter;
<filter>
<filter-name>lazyLoadingFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>
2、數(shù)據(jù)量較小采用了mySql作為數(shù)據(jù)庫,采用mysql需要注意的是早期的mysql版本,表名區(qū)分大小寫,a 與A的結(jié)果不一樣;
3、在展現(xiàn)層方面采用sitemesh裝飾器對展現(xiàn)的頁面進(jìn)行渲染(包括樣式、頁頭、頁腳、統(tǒng)計代碼),保證每個網(wǎng)頁的風(fēng)格一致性,并且可以減少一定開發(fā)工作量;
<filter>
<filter-name>sitemesh</filter-name>
<filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>
</filter>
4、采用gzipFilter對請求進(jìn)行壓縮,減少每次請求所需網(wǎng)絡(luò)流量;
<filter>
<filter-name>gzipFilter</filter-name>
<filter-class>net.sf.ehcache.constructs.web.filter.GzipFilter</filter-class>
</filter>
5、首頁盡可能減少跳轉(zhuǎn)(redirect),因為每次跳轉(zhuǎn)都需要一定的時間;
二、部署流程
1、申請域名
2、選擇虛擬機(jī)托管商
3、部署程序
4、申請備案
三、其他方面;
1、向搜索引擎提交網(wǎng)站
2、其它思考點,通過rewrite 技術(shù)實現(xiàn)反寫,生成相應(yīng)的靜態(tài)文件;
<filter>
<filter-name>rewriteFilter</filter-name>
<filter-class>org.tuckey.web.filters.urlrewrite.UrlRewriteFilter</filter-class>
<!-- sets up log level (will be logged to context log)
can be: TRACE, DEBUG, INFO (default), WARN, ERROR, FATAL, log4j, commons, sysout:{level} (ie, sysout:DEBUG)
if you are having trouble using normal levels use sysout:DEBUG -->
<init-param>
<param-name>logLevel</param-name>
<param-value>commons</param-value>
</init-param>
<!-- set the amount of seconds the conf file will be checked for reload
can be a valid integer (0 denotes check every time,
-1 denotes no reload check, default -1) -->
<init-param>
<param-name>confReloadCheckInterval</param-name>
<param-value>-1</param-value>
</init-param>
</filter>
posted @
2012-04-25 13:16 民工二代 閱讀(519) |
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調(diào)試環(huán)境:struts,Spring,jsp
第一步:安裝插件
在pom.xml文檔中增加相應(yīng)依賴:
<dependency>
<groupId>org.sitemesh</groupId>
<artifactId>sitemesh</artifactId>
<version>2.4.2</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-sitemesh-plugin</artifactId>
<version>2.3.1.2</version>
</dependency>
第二步:配置監(jiān)聽
在web.xml文檔中,增加過濾器
<!-- sitemesh 裝飾器 -->
<filter>
<filter-name>sitemesh</filter-name>
<filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>
</filter>
<filter-name>sitemesh</filter-name>
<url-pattern>*</url-pattern>
</filter-mapping>
第三部:配置裝飾器
在WEB-INF文件夾下,新建裝飾器配置文檔:decorators.xml
文檔內(nèi)容如下:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE decorators PUBLIC "-//OpenSymphony//SiteMesh 1.5 Decorators//EN" "
<decorators defaultdir="/decorators"><!--文件夾可以修改-->
<!-- 放棄裝飾部分 -->
<excludes>
<pattern>/40*.jsp</pattern>
<pattern>/*ajax=true*</pattern>
<pattern>/scripts/dojo/*</pattern>
<pattern>/struts/dojo/*</pattern>
<pattern>/resources/*</pattern>
</excludes>
<!--裝飾名稱,可以設(shè)置多個-->
<decorator name="default" page="default.jsp">
<pattern>*</pattern>
</decorator>
</decorators>
第四步 在WEB-INF文件夾下,新建sitemesh配置文檔:sitemesh.xml
<sitemesh>
<property name="decorators-file" value="/WEB-INF/decorators.xml"/>
<excludes file="${decorators-file}"/>
<page-parsers>
<parser default="true" class="com.opensymphony.module.sitemesh.parser.FastPageParser"/>
<parser content-type="text/html" class="com.opensymphony.module.sitemesh.parser.FastPageParser"/>
<parser content-type="text/html;charset=ISO-8859-1" class="com.opensymphony.module.sitemesh.parser.FastPageParser"/>
</page-parsers>
<decorator-mappers>
<mapper class="com.opensymphony.module.sitemesh.mapper.ConfigDecoratorMapper">
<param name="config" value="${decorators-file}"/>
</mapper>
</decorator-mappers>
</sitemesh>
第五部:編寫裝飾模板并引用標(biāo)簽
在<decorators defaultdir="/decorators">指定的文件下,新加模板:default.jsp
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="<%@ taglib uri="<html xmlns="<head>
<%@ include file="/common/meta.jsp"%>
<title><decorator:title /> | Demo</title>
<decorator:head />
</head>
<body
<decorator:getProperty property="body.id" writeEntireProperty="true"/>
<decorator:getProperty property="body.class" writeEntireProperty="true"/>>
<div id="page">
<div id="header" class="clearfix">
<jsp:include page="/common/header.jsp" />
</div>
<div id="content" class="clearfix">
<div id="main">
<%@ include file="/common/messages.jsp"%>
<h1>
<decorator:getProperty property="meta.heading" />
</h1>
<decorator:body />
</div>
<c:set var="currentMenu" scope="request">
<decorator:getProperty property="meta.menu" />
</c:set>
<div id="nav">
<div class="wrapper"></div>
<hr />
</div>
<!-- end nav -->
</div>
<div id="footer" class="clearfix">
<jsp:include page="/common/footer.jsp" />
</div>
</div>
</body>
</html>
第五部:測試
期待正確的結(jié)果。
posted @
2012-03-15 09:00 民工二代 閱讀(1542) |
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