隨筆檔案(496)

struts-<?xml:namespace prefix = st1 />2.0.6\lib中的的jar文件全部（為了后面的功能擴張）粘貼工程Struts2的lib目錄中。

二、???????????配置項目的web.xml??????

Struts2.0所有的配置被整合在一個Filter里面，該Filter位于org.apache.struts2.dispatcher.FilterDispatcher，因此，在web.xml中應該這樣聲明：

<filter>

???????<filter-name>struts</filter-name>

???????<filter-class>

???????????org.apache.struts2.dispatcher.FilterDispatcher

???????</filter-class>

????</filter>

????

????<filter-mapping>

???????<filter-name>struts</filter-name>

???????<url-pattern>/*</url-pattern>

</filter-mapping>

但是，該Filter一個問題，就是從頁面傳到后臺的中文經過這個過濾器后會變成亂碼，為了解決這個問題，需要重寫這個過濾器，最簡單的方法是寫一個類繼承FilterDispatcher，在src目錄下創建com.filter包，在包中建立NewFilterDispatcher類，繼承FilterDispatcher，代碼如下：

packagecom.filter;

importjava.io.IOException;

importjavax.servlet.FilterChain;

importjavax.servlet.FilterConfig;

importjavax.servlet.ServletException;

importjavax.servlet.ServletRequest;

importjavax.servlet.ServletResponse;

importorg.apache.struts2.dispatcher.FilterDispatcher;

publicclassNewFilterDispatcherextendsFilterDispatcher {

????privatestaticStringencoding="GB2312";

????????publicvoidinit(FilterConfig filterConfig)throwsServletException {

????????????super.init(filterConfig);

????????????String encodingParam = filterConfig.getInitParameter("encoding");

????????????if(encodingParam !=null&& encodingParam.trim().length() != 0) {

???????????????encoding= encodingParam;

????????????}

????????}

????????publicvoiddoFilter(ServletRequest request, ServletResponse response,

????????????????FilterChain chain)throwsIOException, ServletException {

????????????request.setCharacterEncoding(encoding);

????????????super.doFilter(request, response, chain);

????????}

????

}(待續)