公司有两条开发线，一条是老项目，使用的struts；一条线是新的项目开发，用的是spring，但是有一部分开发业务的开发是可以共有的，所以就有了下面的同一个项目里面既有stuts模块，又有spring的模块。
下面我们就来看一下是怎么实现的这一过程吧：
这张图是spring、struts所需要的代码部分
项目结构.pic_hd.jpg
我们再来看看web.xml是怎么加载的
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns: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_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>mybatis</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:spring/spring.xml,classpath*:spring/spring-mybatis.xml</param-value>
</context-param>
<filter>
<description>字符集过滤器</description>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<description>字符集编码</description>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/</url-pattern>
</filter-mapping>
<listener>
<description>spring监听器</description>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 防止spring内存溢出监听器 -->
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<!-- spring mvc servlet -->
<servlet>
<description>spring mvc servlet</description>
<servlet-name>springMvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<description>spring mvc 配置文件</description>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:spring/spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- struts -->
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>owen.struts.action.OwenJavaActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>3</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>3</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<!-- struts -->
<welcome-file-list>
<welcome-file>/index.jsp</welcome-file>
</welcome-file-list>
<!-- 配置session超时时间，单位分钟 -->
<session-config>
<session-timeout>15</session-timeout>
</session-config>
</web-app>
配置文件中有一个类owen.struts.action.OwenJavaActionServlet，这个类的作用是加载struts的配置文件
package owen.struts.action;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import javax.servlet.ServletException;
import javax.servlet.UnavailableException;
import org.apache.struts.action.ActionServlet;
import org.apache.struts.config.ForwardConfig;
import org.apache.struts.config.ModuleConfig;
import owen.utils.FileSearch;
public class OwenJavaActionServlet extends ActionServlet {
private static final long serialVersionUID = 1L;
public void init() throws ServletException {
try {
initInternal();
initOther();
initServlet();
getServletContext().setAttribute(
"org.apache.struts.action.ACTION_SERVLET", this);
initModuleConfigFactory();
ModuleConfig moduleConfig = initModuleConfig("", this.config);
initModuleMessageResources(moduleConfig);
initModuleDataSources(moduleConfig);
initModulePlugIns(moduleConfig);
moduleConfig.freeze();
String path = getServletContext().getRealPath("WEB-INF");
FileSearch obj = new FileSearch();
StringBuffer sb = new StringBuffer();
String start = "struts-config-";
String end = ".xml";
obj.getFilePath(sb, path, start, end);
String[] filePath = sb.toString().split(";");
String tmp = "";
Map map = new HashMap();
for (int i = 0; i < filePath.length; i++) {
if (filePath[i] == null || filePath[i].equals(""))
continue;
String tmpPath = "\\WEB-INF" + filePath[i].replace(path, "");
String prefix = tmpPath.substring(tmpPath.indexOf(start),
tmpPath.indexOf(end));
prefix = "/" + prefix.replace(start, "");
tmpPath = tmpPath.replace("\\", "/");
//System.out.println("prefix:"+prefix);
//System.out.println("prefix2:"+prefix.replace(start, ""));
//System.out.println("tmppath:"+tmpPath);
if (map.get(prefix) != null) {
tmp = String.valueOf(map.get(prefix));
map.put(prefix, tmp + "," + tmpPath);
} else {
map.put(prefix, tmpPath);
}
}
Entry entry = null;
Iterator iter = map.entrySet().iterator();
while (iter.hasNext()) {
entry = (Entry) iter.next();
log.info("load xml file " + entry.getValue().toString());
moduleConfig = initModuleConfig(String.valueOf(entry.getKey()),
String.valueOf(entry.getValue()));
initModuleMessageResources(moduleConfig);
initModuleDataSources(moduleConfig);
initModulePlugIns(moduleConfig);
moduleConfig.freeze();
}
initModulePrefixes(getServletContext());
destroyConfigDigester();
} catch (UnavailableException ex) {
throw ex;
} catch (Throwable t) {
t.printStackTrace();
log.error("Unable to initialize Struts "
+ "ActionServlet due to an "
+ "unexpected exception or error " + "thrown, so marking "
+ "the servlet as unavailable. "
+ "Most likely, this is due to an "
+ "incorrect or missing library dependency.", t);
throw new UnavailableException(t.getMessage());
}
}
}
主要是依赖这些配置文件
那如果想要了解整个源码，已经上传到git了，地址为：
https://gitee.com/toLeftBest/owen-java-spring-struts.git
项目运行之后的样子
struts和spring.pic_hd.jpg
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