J2EE三大框架配置文件管理示例

三大框架在整合时通常都是用spring管理hibernate和struts，配置文件一般也是采用spring的配置文件，这样一个spring的配置文件的内容多而且杂，观察起来很不清楚。现在将三大框架的配置文件分开，这样看起来就很清晰。
三大框架在web.xml中的配置：

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< span>xmlversion="1.0"encoding="UTF-8"?<
< span>web-appxmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"id="WebApp_ID"version="2.5"<
< span>display-name<STRUTS2display-name<
< span>welcome-file-list<
< span>welcome-file<index.htmlwelcome-file<
< span>welcome-file<index.htmwelcome-file<
< span>welcome-file<index.jspwelcome-file<
< span>welcome-file<default.htmlwelcome-file<
< span>welcome-file<default.htmwelcome-file<
< span>welcome-file<default.jspwelcome-file<
welcome-file-list<

< span>servlet<
< span>servlet-name<InitServletservlet-name<
< span>servlet-class<com.STRUTSFRAMEWORK2.common.init.InitServletservlet-class<
< span>init-param<
< span>param-name<log4jparam-name<
< span>param-value<WEB-INF/log4j.propertiesparam-value<
init-param<
< span>init-param<
< span>param-name<hibernateparam-name<
< span>param-value<WEB-INF/hibernate.cfg.xmlparam-value<
init-param<
< span>load-on-startup<1load-on-startup<
servlet<

< span>filter<
< span>filter-name<CharacterFilterfilter-name<
< span>filter-class<com.STRUTSFRAMEWORK2.common.filter.character.CharacterFilterfilter-class<
< span>init-param<
< span>param-name<encodingparam-name<
< span>param-value<UTF-8param-value<
init-param<
filter<
< span>filter-mapping<
< span>filter-name<CharacterFilterfilter-name<
< span>url-pattern</*url-pattern<
filter-mapping<

< span>filter<
< span>filter-name<struts2filter-name<
< span>filter-class<org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilterfilter-class<
filter<
< span>filter-mapping<
< span>filter-name<struts2filter-name<
< span>url-pattern</*url-pattern<
filter-mapping<

< span>listener<
< span>listener-class<org.springframework.web.context.ContextLoaderListenerlistener-class<
listener<
< span>context-param<
< span>param-name<contextConfigLocationparam-name<
< span>param-value<
classpath:/applicationContext.xml,

classpath:/com/STRUTSFRAMEWORK2/web/*/applicationContext*.xml

param-value<
context-param<
web-app<

其中InitServlet和CharacterFilter的代码如下：
InitServlet：

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package
com.STRUTSFRAMEWORK2.common.init;

import
javax.servlet.ServletConfig;
import
javax.servlet.ServletException;
import
javax.servlet.http.HttpServlet;

import
org.apache.log4j.PropertyConfigurator;

publicclass
InitServlet extends HttpServlet {

/*** serialVersionUID: ***/
privatestaticfinallong
serialVersionUID = -6389389969009997855L;

publicstaticfinal
String FILE_SEPARATOR = System.getProperties()
.getProperty("file.separator");

privatestatic
String contextPath;

privatestatic
String hibernatePath;

privatestatic
String serverConfig;

privatestatic
String classPath;

@Override
publicvoid
init(ServletConfig config) throws ServletException {

super.init(config);

String prefix = config.getServletContext().getRealPath("/");

InitServlet.contextPath = prefix;

if
(FILE_SEPARATOR.equals("\\")) {

// 获取内容服务器配置文件的路径
serverConfig = prefix +
"\\WEB-INF\\config.properties";

}
elseif
(FILE_SEPARATOR.equals("/")) {

serverConfig = prefix +
"/WEB-INF/config.properties";

}

// Log4J
String log4jFile = config.getInitParameter("log4j");

String log4jConfigPath = prefix + log4jFile;

PropertyConfigurator.configure(log4jConfigPath);

// Hibernate Path
hibernatePath = prefix + config.getInitParameter("hibernate");

classPath = Thread.currentThread().getContextClassLoader()

.getResource("").getPath();

}

@Override
publicvoid
destroy() {
super.destroy();

}

publicstaticfinal
String getContextPath() {
return
InitServlet.contextPath;
}

publicstaticfinal
String getHibernatePath() {
return
InitServlet.hibernatePath;
}

publicstaticfinal
String getServerConfig() {
return
serverConfig;
}

publicstaticfinal
String getClassPath() {
return
classPath;
}

}

CharacterFilter：

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package
com.STRUTSFRAMEWORK2.common.filter.character;

import
java.io.IOException;

import
javax.servlet.Filter;
import
javax.servlet.FilterChain;
import
javax.servlet.FilterConfig;
import
javax.servlet.ServletException;
import
javax.servlet.ServletRequest;
import
javax.servlet.ServletResponse;

publicclass
CharacterFilter implements Filter {

protected
String encoding = null;

protected
FilterConfig filterConfig = null;

protectedboolean
ignore = true;

@Override
publicvoid
destroy() {
this.encoding =
null;

this.filterConfig =
null;

}

@Override
publicvoid
doFilter(ServletRequest request, ServletResponse response,
FilterChain chain)
throws IOException, ServletException {

if
(ignore || (request.getCharacterEncoding() == null)) {

String encoding = selectEncoding(request);

if
(encoding != null) {

request.setCharacterEncoding(encoding);

}

}

chain.doFilter(request, response);

}

@Override
publicvoid
init(FilterConfig filterConfig) throws ServletException {

this.filterConfig = filterConfig;

this.encoding = filterConfig.getInitParameter("encoding");

String value = filterConfig.getInitParameter("ignore");

if
(value == null) {

this.ignore =
true;

}
elseif
(value.equalsIgnoreCase("true")) {

this.ignore =
true;

}
elseif
(value.equalsIgnoreCase("yes")) {

this.ignore =
true;

}
else {

this.ignore =
false;

}

}

protected
String selectEncoding(ServletRequest request) {
return
(this.encoding);

}

}

在src(源代码文件夹)下加入applicationContext.xml和struts.xml文件，这两个文件的角色是spring和struts的“总管家”
struts.xml文件：

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< span>xmlversion="1.0"encoding="UTF-8"?<

"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

"http://struts.apache.org/dtds/struts-2.0.dtd"<

< span>struts<

< span>constantname="struts.objectFactory"value="org.apache.struts2.spring.StrutsSpringObjectFactory"/<
< span>constantname="struts.multipart.maxSize"value="104857600"<constant<

< span>includefile="/com/STRUTSFRAMEWORK2/web/test/struts-test.xml"<include<
struts<

applicationContext.xml文件：

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< span>xmlversion="1.0"encoding="UTF-8"?<
< span>beansxmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd" default-autowire="autodetect"<

< span>aop:aspectj-autoproxyproxy-target-class="true"/<

< span>beanid="dao"class="com.STRUTSFRAMEWORK2.common.dao.impl.CommonDaoImpl"<
bean<
beans<

在web.xml文件中已经指定了spring的配置文件在classpath下的applicationContext.xml和com.STRUTSFRAMEWORK2.web包下(包括所有的子包)，spring会自动搜索。
贴上com.STRUTSFRAMEWORK2.web.test下(“test模块”的“管理文件”)struts-test.xml(在总管家注册)，applicationContext_test.xml(spring自动搜索)
struts-test.xml：

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< span>xmlversion="1.0"encoding="UTF-8"?<

"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

"http://struts.apache.org/dtds/struts-2.0.dtd"<
< span>struts<
< span>packagename="test"extends="struts-default"namespace="/sshframework/api"<
< span>actionname="testCheck"class="com.STRUTSFRAMEWORK2.web.test.action.TestAction"<
< span>resultname="success"</pages/testpages/success.jspresult<
< span>resultname="error"</pages/testpages/error.jspresult<
< span>resultname="fail"</pages/testpages/fail.jspresult<
action<
package<
struts<

applicationContext_test.xml：

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< span>xmlversion="1.0"encoding="UTF-8"?<
< span>beansxmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"<
beans<

这样的好处是每个模块的配置文件不会相互干扰，系统结构清晰，O(∩_∩)O哈哈~