系统从整体分层来看B/S架构
如果真的要完成一个系统所需要哪些技术呢？它们在整个架构中又发挥了怎样的作用呢？怎样分工协作的呢？
web.xml是配置的文件也可以说是各个层的控制流配置集中的地方。看看web.xml里面的配置文件基本上就能知道整个系统运用了哪些技术的大概。web.xml配置.
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <!--如果不定义webAppRootKey参数，那么webAppRootKey就是缺省的"webapp.root"。但最好设置，以免项目之间的名称冲突。 定义以后，在Web Container启动时将把ROOT的绝对路径写到系统变量里。 然后log4j的配置文件里就可以用${ bookstore.root }来表示Web目录的绝对路径，把log文件存放于webapp中。 此参数用于后面的“Log4jConfigListener”--> <!--Spring ApplicationContext配置文件的路径。可使用通配符，多个路径用逗号分隔。 此参数用于后面的“Spring-Context loader”--> <context-param> <param-name>contextConfigLocation</param-name> <param-value> classpath:context/applicationContext.xml </param-value> </context-param> <!--由Sprng载入的Log4j配置文件位置--> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>classpath:log4j.properties</param-value> </context-param> <!--Spring默认刷新Log4j配置文件的间隔,单位为millisecond--> <context-param> <param-name>log4jRefreshInterval</param-name> <param-value>60000</param-value> </context-param> <!--默认i18n资源文件--> <context-param> <param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name> <param-value>i18n/messages</param-value> </context-param> <!--ExtremeTable 表格标签的 Properties文件--> <context-param> <param-name>extremecomponentsPreferencesLocation</param-name> <param-value>classpath:conf/extremetable.properties</param-value> </context-param> <!-- 由于配置这个后apusic找不到指定的i18n/messages文件，反而出错 --> <!-- <context-param> <param-name>extremecomponentsMessagesLocation</param-name> <param-value>i18n/messages</param-value> </context-param> --> <!-- listener定义 --> <context-param> <param-name>firstListener</param-name> <param-value>org.springframework.web.context.ContextLoaderListener;org.springframework.web.util.Log4jConfigListener;org.springframework.web.util.IntrospectorCleanupListener</param-value> </context-param> <!--HSQLDB Listener的参数，随WebApp启动停止的Listener {user.home} System.getProperty("user.home") {webapp.root} servletContext.getRealPath("/") --> <!-- 暂时屏蔽hsql，转移到mssql上，hanyou 2006/6/27 <context-param> <param-name>hsql.dbPath</param-name> <param-value>{user.home}/firstframe/db</param-value> </context-param> <context-param> <param-name>hsql.dbName</param-name> <param-value>firstframe</param-value> </context-param> <context-param> <param-name>hsql.port</param-name> <param-value>9002</param-value> </context-param> --> <!--famous Character Encoding filter--> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <!-- 要尊重每个人的想法，以前总以为问题的人是SB.后来慢慢才明白，能提出正确的问题是多么的不容易！ --> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>*.do</url-pattern> </filter-mapping> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/rest/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <!-- 中文帐号登录的问题，以前没有加转码过滤器，所以就出问题了 --> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/j_acegi_security_check</url-pattern> </filter-mapping> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/ImportUpload</url-pattern> </filter-mapping> <!-- Acegi安全控制 Filter 配置用FilterToBeanProxy来代理每个filter request --> <filter> <filter-name>Acegi Filter Chain Proxy</filter-name> <filter-class>org.acegisecurity.util.FilterToBeanProxy</filter-class> <init-param> <param-name>targetClass</param-name> <param-value>org.acegisecurity.util.FilterChainProxy</param-value> </init-param> </filter> <!--Open Session in View Filter--> <filter> <filter-name>hibernateFilter</filter-name> <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class> </filter> <!--SiteMesh filter--> <filter> <filter-name>sitemeshFilter</filter-name> <filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class> </filter> <!--Log4J filter，将Session中的UserID属性放入Log4j MDC--> <filter> <filter-name>log4jMDCUserFilter</filter-name> <filter-class>cn.firstsoft.firstframe.web.support.Log4JUserFilter</filter-class> </filter> <!--ExtremeTable 导出Excel和Pdf的 Filter--> <filter> <filter-name>eXtremeExport</filter-name> <filter-class>org.extremecomponents.table.filter.ExportFilter</filter-class> </filter> <!--消息filter, 将Session中的messages属性放入request并从session移除 参见BaseController中的saveMessages()方法使用，用于在Redirect时保留信息--> <filter> <filter-name>messageFilter</filter-name> <filter-class>org.springside.core.web.MessageFilter</filter-class> </filter> <!-- webwork 展示所需 filter : start --> <!-- <filter> <filter-name>ActionContextCleanUp</filter-name> <filter-class>com.opensymphony.webwork.dispatcher.ActionContextCleanUp</filter-class> </filter> <filter> <filter-name>sitemeshForFreemarker</filter-name> <filter-class>com.opensymphony.webwork.sitemesh.FreeMarkerPageFilter</filter-class> </filter> <filter> <filter-name>webwork</filter-name> <filter-class>com.opensymphony.webwork.dispatcher.FilterDispatcher</filter-class> </filter> --> <!-- webwork 展示所需 filter : end --> <filter-mapping> <filter-name>Acegi Filter Chain Proxy</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>*.do</url-pattern> </filter-mapping> <!-- 针对后来定义的servlet，都加到此过滤器中 --> <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>/FilemanUpload</url-pattern> </filter-mapping> <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>/KnowledgePositionServlet</url-pattern> </filter-mapping> <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>/WebsignServlet</url-pattern> </filter-mapping> <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>/ImportUpload</url-pattern> </filter-mapping> <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>/PostilUpload</url-pattern> </filter-mapping> <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>/dwr/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>/j_acegi_security_check</url-pattern> </filter-mapping> <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>*.jsp</url-pattern> </filter-mapping> <!-- 加上此Mapping, 让xfire也用上open session in view --> <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>/service/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>/PositionServlet</url-pattern> </filter-mapping> <filter-mapping> <filter-name>sitemeshFilter</filter-name> <url-pattern>/modules/*</url-pattern> <dispatcher>REQUEST</dispatcher> <dispatcher>FORWARD</dispatcher> </filter-mapping> <filter-mapping> <filter-name>log4jMDCUserFilter</filter-name> <url-pattern>/modules/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>messageFilter</filter-name> <url-pattern>/*</url-pattern> <dispatcher>REQUEST</dispatcher> <dispatcher>FORWARD</dispatcher> </filter-mapping> <filter-mapping> <filter-name>eXtremeExport</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- session超时自动退出filter --> <filter> <filter-name>SessionFilter</filter-name> <filter-class>cn.firstsoft.firstframe.web.support.SessionFilter</filter-class> </filter> <filter-mapping> <filter-name>SessionFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 文件下载过滤器 --> <filter> <filter-name>FileDownloadFilter</filter-name> <filter-class>cn.firstsoft.firstframe.web.support.FileDownloadFilter</filter-class> </filter> <filter-mapping> <filter-name>FileDownloadFilter</filter-name> <url-pattern>/modules/download/*</url-pattern> </filter-mapping> <!-- webwork 展示所需 filter mapping : start --> <!-- 暂时不用，屏蔽，hanyou 2006/6/27 <filter-mapping> <filter-name>hibernateFilter</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <filter-mapping> <filter-name>ActionContextCleanUp</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <filter-mapping> <filter-name>sitemeshForFreemarker</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <filter-mapping> <filter-name>sitemeshForFreemarker</filter-name> <url-pattern>*.jsp</url-pattern> </filter-mapping> <filter-mapping> <filter-name>webwork</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <filter-mapping> <filter-name>webwork</filter-name> <url-pattern>/webwork/*</url-pattern> </filter-mapping> --> <!-- webwork 展示所需 filter mapping : end --> <!--控制HSQLDB随Web App 启动停止--> <!-- 启动内嵌的HSQL，用于演示，是否启动由firstframe.properties中plugins.hsql=true决定 --> <!-- <listener> <listener-class>cn.firstsoft.firstframe.web.support.HsqlListener</listener-class> </listener> --> <!--Spring Context loader--> <!-- <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> --> <!--Spring log4j Config loader--> <!-- <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> --> <!-- 发布HttpSessionApplicationEvents和HttpSessionDestroyedEvent事件给spring的applicationcontext --> <listener> <listener-class>org.acegisecurity.ui.session.HttpSessionEventPublisher</listener-class> </listener> <!--退出登录时session 失效的方式 --> <listener> <listener-class>org.springside.modules.security.service.acegi.logout.SessionListener</listener-class> </listener> <!-- 自动清理内存垃圾的监听器 --> <!-- <listener> <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class> </listener> --> <!-- 用户在线监听器，不适合负载均衡处理，如果需要负载均衡则需要把保存的map变成oscache --> <listener> <listener-class>cn.firstsoft.firstframe.web.support.UserOnlineListener</listener-class> </listener> <listener> <listener-class>cn.firstsoft.firstframe.web.support.CommonListener</listener-class> </listener> <!--Spring Dispatch Servlet,Spring MVC的入口，按servlet-name, 载入bookstore-servlet.xml--> <servlet> <servlet-name>firstframe</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>firstframe</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <!--XFire WebServic的入口--> <servlet-mapping> <servlet-name>firstframe</servlet-name> <url-pattern>/service/*</url-pattern> </servlet-mapping> <!-- FCK 所见即所得编辑器文件上传 Servlet--> <servlet> <servlet-name>Connector</servlet-name> <servlet-class>com.fredck.FCKeditor.connector.ConnectorServlet</servlet-class> <init-param> <param-name>baseDir</param-name> <param-value>/uploadfiles/</param-value> </init-param> <init-param> <param-name>debug</param-name> <param-value>false</param-value> </init-param> <load-on-startup>2</load-on-startup> </servlet> <servlet> <servlet-name>SimpleUploader</servlet-name> <servlet-class>com.fredck.FCKeditor.uploader.SimpleUploaderServlet</servlet-class> <init-param> <param-name>baseDir</param-name> <param-value>/uploadfiles/</param-value> </init-param> <init-param> <param-name>debug</param-name> <param-value>false</param-value> </init-param> <init-param> <param-name>enabled</param-name> <param-value>true</param-value> </init-param> <init-param> <param-name>AllowedExtensionsFile</param-name> <param-value/> </init-param> <init-param> <param-name>DeniedExtensionsFile</param-name> <param-value>php|php3|php5|phtml|asp|aspx|ascx|jsp|cfm|cfc|pl|bat|exe|dll|reg|cgi|htm|html|js|mht</param-value> </init-param> <init-param> <param-name>AllowedExtensionsImage</param-name> <param-value>jpg|gif|jpeg|png|bmp</param-value> </init-param> <init-param> <param-name>DeniedExtensionsImage</param-name> <param-value/> </init-param> <init-param> <param-name>AllowedExtensionsFlash</param-name> <param-value>swf|fla</param-value> </init-param> <init-param> <param-name>DeniedExtensionsFlash</param-name> <param-value/> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>Connector</servlet-name> <url-pattern>/components/fck/editor/filemanager/browser/default/connectors/jsp/connector</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>SimpleUploader</servlet-name> <url-pattern>/components/fck/editor/filemanager/upload/simpleuploader</url-pattern> </servlet-mapping> <!-- end of FCK Editor‘s 文件上传Servlet--> <!----> <!-- Flex阅读器配置 --> <servlet> <servlet-name>FlexReaderAuthServlet</servlet-name> <servlet-class> cn.firstsoft.firstframe.plugins.readextend.FlexReaderAuth </servlet-class> </servlet> <servlet-mapping> <servlet-name>FlexReaderAuthServlet</servlet-name> <url-pattern>/servlet/FlexReader</url-pattern> </servlet-mapping> <servlet> <servlet-name>ReaderStreamServlet</servlet-name> <servlet-class> cn.firstsoft.firstframe.plugins.readextend.SwfStream </servlet-class> </servlet> <servlet-mapping> <servlet-name>ReaderStreamServlet</servlet-name> <url-pattern>/servlet/ReaderStream</url-pattern> </servlet-mapping> <servlet> <servlet-name>DownloadFileServlet</servlet-name> <servlet-class> cn.firstsoft.firstframe.plugins.readextend.FlieDownloadServlet </servlet-class> </servlet> <servlet-mapping> <servlet-name>DownloadFileServlet</servlet-name> <url-pattern>/servlet/downloadFileServlet</url-pattern> </servlet-mapping> <servlet> <servlet-name>FlexReaderOperationLog</servlet-name> <servlet-class> cn.firstsoft.firstframe.plugins.readextend.FlexOperationLog </servlet-class> </servlet> <servlet-mapping> <servlet-name>FlexReaderOperationLog</servlet-name> <url-pattern>/servlet/flexReaderOperationLog</url-pattern> </servlet-mapping> <!-- Flex阅读器配置 end --> <!-- WebService start --> <servlet> <servlet-name>CXFServlet</servlet-name> <servlet-class> org.apache.cxf.transport.servlet.CXFServlet </servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>CXFServlet</servlet-name> <url-pattern>/webservices/*</url-pattern> </servlet-mapping> <!-- WebService end --> <!-- DWR Ajax, 如果没安装plugins/DWR, Tomcat会报错,但不影响运行--> <servlet> <servlet-name>dwr-invoker</servlet-name> <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class> <init-param> <description></description> <param-name>debug</param-name> <param-value>false</param-value> </init-param> <init-param> <param-name>classes</param-name> <param-value>java.lang.Object</param-value> </init-param> <load-on-startup>100</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dwr-invoker</servlet-name> <url-pattern>/dwr/*</url-pattern> </servlet-mapping> <servlet> <servlet-name>Upload</servlet-name> <servlet-class>cn.firstsoft.firstframe.plugins.upload.web.Upload</servlet-class> </servlet> <servlet-mapping> <servlet-name>Upload</servlet-name> <url-pattern>/upload.do</url-pattern> </servlet-mapping> <!-- Webwork 展示用，FreeMarker支持taglib的用到servlet --> <!-- 暂时不支持webwork，屏蔽，hanyou 2006/6/27 <servlet> <servlet-name>JspSupportServlet</servlet-name> <servlet-class>com.opensymphony.webwork.views.JspSupportServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> --> <!-- end of dwr --> <!-- 我只是利用他的init方法，来初始化这个webapplationcontxt --> <servlet> <servlet-name>initBeanFactroyServlet</servlet-name> <servlet-class>cn.firstsoft.firstframe.web.FirstFrameBeanFactory</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <!-- DsoFramer,WebOffice用来上传在线编辑的正文 --> <servlet> <servlet-name>PostilUpload</servlet-name> <servlet-class>cn.firstsoft.modules.workflow.web.PostilUpload</servlet-class> <load-on-startup>3</load-on-startup> </servlet> <servlet-mapping> <servlet-name>PostilUpload</servlet-name> <url-pattern>/PostilUpload</url-pattern> </servlet-mapping> <!-- 在线批量导入servlet --> <servlet> <servlet-name>ImportUpload</servlet-name> <servlet-class>cn.firstsoft.modules.knowledge.web.ImportUpload</servlet-class> <init-param> <param-name>source_charset</param-name> <!-- ISO-8859-1,GBK,UTF-8多试知道 --> <param-value></param-value> </init-param> <init-param> <param-name>target_charset</param-name> <!-- 一般转成GBK --> <param-value>GBK</param-value> </init-param> <load-on-startup>3</load-on-startup> </servlet> <servlet-mapping> <servlet-name>ImportUpload</servlet-name> <url-pattern>/ImportUpload</url-pattern> </servlet-mapping> <!-- iWebSignature集成的页面签章 --> <servlet> <servlet-name>WebsignServlet</servlet-name> <servlet-class>cn.firstsoft.modules.workflow.web.WebsignServlet</servlet-class> <load-on-startup>3</load-on-startup> </servlet> <servlet-mapping> <servlet-name>WebsignServlet</servlet-name> <url-pattern>/WebsignServlet</url-pattern> </servlet-mapping> <!-- iWebOffice集成金格全文批注 --> <servlet> <servlet-name>PositionServlet</servlet-name> <servlet-class>cn.firstsoft.modules.workflow.web.PositionServlet</servlet-class> <load-on-startup>3</load-on-startup> </servlet> <servlet-mapping> <servlet-name>PositionServlet</servlet-name> <url-pattern>/PositionServlet</url-pattern> </servlet-mapping> <servlet> <servlet-name>KnowledgePositionServlet</servlet-name> <servlet-class>cn.firstsoft.modules.knowledge.web.PositionServlet</servlet-class> <load-on-startup>3</load-on-startup> </servlet> <servlet-mapping> <servlet-name>KnowledgePositionServlet</servlet-name> <url-pattern>/KnowledgePositionServlet</url-pattern> </servlet-mapping> <!-- 带进度条上传 --> <servlet> <servlet-name>FilemanUpload</servlet-name> <servlet-class>cn.firstsoft.modules.fileman.web.FilemanUploadServlet</servlet-class> <load-on-startup>3</load-on-startup> </servlet> <servlet-mapping> <servlet-name>FilemanUpload</servlet-name> <url-pattern>/FilemanUpload</url-pattern> </servlet-mapping> <!-- 生成验证码 --> <servlet> <servlet-name>ImageRand</servlet-name> <servlet-class>cn.firstsoft.firstframe.util.ImageRand</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>ImageRand</servlet-name> <url-pattern>/common/image.jpg</url-pattern> </servlet-mapping> <!-- end 用来上传在线编辑的正文 --> <servlet> <servlet-name>ImageServlet</servlet-name> <servlet-class>net.sf.jasperreports.j2ee.servlets.ImageServlet</servlet-class> </servlet> <!-- PT056407, R111009-0403, hao_yun, 将v6.2R1中的IM集成回迁至v6.1 --> <servlet> <servlet-name>CommSettingServlet</servlet-name> <servlet-class>cn.firstsoft.modules.admin.web.CommSettingServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>ImageServlet</servlet-name> <url-pattern>/servlets/image</url-pattern> </servlet-mapping> <!-- PT056407, R111009-0403, hao_yun, 将v6.2R1中的IM集成回迁至v6.1 --> <servlet-mapping> <servlet-name>CommSettingServlet</servlet-name> <url-pattern>/admin/comm.do</url-pattern> </servlet-mapping> <servlet> <servlet-name>Jersey Spring REST Service</servlet-name> <servlet-class>com.sun.jersey.spi.spring.container.servlet.SpringServlet</servlet-class> <load-on-startup>10</load-on-startup> </servlet> <servlet-mapping> <servlet-name>Jersey Spring REST Service</servlet-name> <url-pattern>/rest/*</url-pattern> </servlet-mapping> <!-- RMP:R111009-0419 DMP:PT056408 2011-11-16 zhenzhen_zhang 知识中心6.2回迁 --> <!-- flex在线阅读器 文档转换服务器通过restful访问 通知去下载转换好的swf格式文件 用到了上面的Jersey Spring REST Service 映射--> <servlet-mapping> <servlet-name>Jersey Spring REST Service</servlet-name> <url-pattern>/fileconvert/*</url-pattern> </servlet-mapping> <!-- flex在线阅读器 文档转换服务器通过restful访问 通知去下载转换好的swf格式文件 end--> <servlet> <servlet-name>UserPinyinInitServlet</servlet-name> <servlet-class>com.kingdee.ecp.rest.security.web.UserPinyinInitServlet</servlet-class> <load-on-startup>13</load-on-startup> </servlet> <!-- RMP:R111028-0341 DMP:PT057448 dexiang_lei 门户图表 --> <servlet> <servlet-name>ChartDefinitionInitServlet</servlet-name> <servlet-class>org.springside.modules.security.servlet.ChartDefinitionInitServlet</servlet-class> <load-on-startup>13</load-on-startup> </servlet> <servlet> <servlet-name>WebSignUpload</servlet-name> <servlet-class>cn.firstsoft.modules.workflow.web.WebSignUpload</servlet-class> </servlet> <servlet-mapping> <servlet-name>WebSignUpload</servlet-name> <url-pattern>/WebSignUpload</url-pattern> </servlet-mapping> <!-- --> <filter> <filter-name>REST SecurityFilter</filter-name> <filter-class>com.kingdee.ecp.rest.security.web.SecurityFilter</filter-class> </filter> <filter-mapping> <filter-name>REST SecurityFilter</filter-name> <url-pattern>/rest/*</url-pattern> </filter-mapping> <mime-mapping> <extension>mht</extension> <mime-type>text/x-mht</mime-type> </mime-mapping> <mime-mapping> <extension>rar</extension> <mime-type>application/octet-stream</mime-type> </mime-mapping> <mime-mapping> <extension>cab</extension> <mime-type>application/octet-stream</mime-type> </mime-mapping> <mime-mapping> <extension>cab</extension> <mime-type>application/zip</mime-type> </mime-mapping> <!--session 超时定义，增加了动态页面刷新，设置短一点好进行统计在线用户数量--> <session-config> <session-timeout>30</session-timeout> </session-config> <!--默认首页定义--> <welcome-file-list> <welcome-file>index.jsp</welcome-file> <welcome-file>index.html</welcome-file> </welcome-file-list> <!-- 下面定义的数据源为迁移到其他应用服务器上的需要，主要是BEA, WEBSPERE --> <!-- 在kingdee apusic下要屏蔽--> <resource-ref> <res-ref-name>jdbc/DefaultDS</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> <res-sharing-scope>Shareable</res-sharing-scope> </resource-ref> <!--Error Page定义--> <error-page> <error-code>500</error-code> <location>/errors/error.jsp</location> </error-page> <error-page> <error-code>404</error-code> <location>/errors/404.jsp</location> </error-page> <error-page> <error-code>403</error-code> <location>/errors/403.jsp</location> </error-page> </web-app>
web.xml文件里面可以呈现出很多的信息。这个问题的切入点找对了吗？？这个系统运用了哪些框架呢，从管理框架来讲呢感觉有两层（spring MVC,Spring）为什么我又想到了
从管理框架层来讲呢，如果不管理会怎样呢？为什么会有spring 及spring 的MVC或者struts2呢？
spring管理了Dao层，manager 层既然是管理框架有什么好处呢（事务,对象注入，jdbc连接管理,I18N国际化配置,Hibernate、EJB配置,缓存处理，如果更麻烦系统还是事件监听、过滤、拦截等） 这里面面所涉及的东西应该是一个相对完整的系统不可缺少的。而且每一项都包含着独立领域的难点等。
spring MVC 管理了前端jsp界面Controller 用这个又有什么好处呢（安全认证、权限管理、jsp界面控制（真的系统我开始以为jsp很简单其实不然）、标签管理、I18N国际化配置）
spring MVC 及sping 可以管理一个轻量级的系统
那么什么是事务呢
<beans> <bean id="baseTxService" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" abstract="true"> <property name="transactionManager"> <ref bean="transactionManager" /> </property> <property name="proxyTargetClass"> <value>true</value> </property> <property name="transactionAttributes"> <props> <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop> <prop key="find*">PROPAGATION_REQUIRED,readOnly</prop> <prop key="load*">PROPAGATION_REQUIRED,readOnly</prop> <prop key="save*">PROPAGATION_REQUIRED,-BusinessException</prop> <prop key="update*">PROPAGATION_REQUIRED,-BusinessException</prop> <prop key="remove*">PROPAGATION_REQUIRED,-BusinessException</prop> <prop key="builderCalendar">PROPAGATION_REQUIRED,readOnly</prop> </props> </property> </bean> </beans>
这个是spring的事务配置。就是我在中间设立一个关卡，按照我的要求给你分配流的管道。AOP为什么说他是面象切面编程呢？它与spring的Ioc结合使用,更加体现了aop的强大功能所在.在讲它与spring结合使用之前先说几个难听,难懂的概念.它为什么不命名一些容易理解的概念了,因为aop很早就有人对它们命名了， 所以spring中讲的aop也不例外.在jboss,AspectJ...中都有aop这个概念.概念都一样的.看你怎样理解和运用了.我们简单的讲一下常用的几个概念.第一个: 切面(Aspect),这是中文的翻译,你可以把它翻译成方面,一部分...关于它的翻译太多,我们不关注这些,我们知道理解它是核心功能就OK了．切面简单的理解就是把那些不是核心业务应该处理的代码提取出来，进行封装成模块化．来处理那些附加的功能代码．（如日志，事务，安全验证）我们把这个模块的作用理解为一个切面，告诉我们它是一个功能模块．我们可以把它看成一个切面．说白了就是我们写一个类，在这个类中写一些处理在核心业务中起到同样效果的方法．这样大家应该明白了吧．专业的概念就是那么难理解．
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