package filters;
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;
import javax.servlet.UnavailableException;/*** <p>Example filter that sets the character encoding to be used in parsing the* incoming request, either unconditionally or only if the client did not* specify a character encoding. Configuration of this filter is based on* the following initialization parameters:</p>* <ul>* <li><strong>encoding</strong> - The character encoding to be configured* for this request, either conditionally or unconditionally based on* the <code>ignore</code> initialization parameter. This parameter* is required, so there is no default.</li>* <li><strong>ignore</strong> - If set to "true", any character encoding* specified by the client is ignored, and the value returned by the* <code>selectEncoding()</code> method is set. If set to "false,* <code>selectEncoding()</code> is called <strong>only</strong> if the* client has not already specified an encoding. By default, this* parameter is set to "true".</li>* </ul>** <p>Although this filter can be used unchanged, it is also easy to* subclass it and make the <code>selectEncoding()</code> method more* intelligent about what encoding to choose, based on characteristics of* the incoming request (such as the values of the <code>Accept-Language</code>* and <code>User-Agent</code> headers, or a value stashed in the current* user's session.</p>** @author Craig McClanahan* @version $Revision: 1.2 $ $Date: 2001/10/17 22:53:19 $*/public class SetCharacterEncodingFilter implements Filter {// ----------------------------------------------------- Instance Variables/*** The default character encoding to set for requests that pass through* this filter.*/protected String encoding = null;/*** The filter configuration object we are associated with. If this value* is null, this filter instance is not currently configured.*/protected FilterConfig filterConfig = null;/*** Should a character encoding specified by the client be ignored?*/protected boolean ignore = true;// --------------------------------------------------------- Public Methods/*** Take this filter out of service.*/public void destroy() {this.encoding = null;this.filterConfig = null;}/*** Select and set (if specified) the character encoding to be used to* interpret request parameters for this request.** @param request The servlet request we are processing* @param result The servlet response we are creating* @param chain The filter chain we are processing** @exception IOException if an input/output error occurs* @exception ServletException if a servlet error occurs*/public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain)throws IOException, ServletException {// Conditionally select and set the character encoding to be usedif (ignore || (request.getCharacterEncoding() == null)) {String encoding = selectEncoding(request);if (encoding != null)request.setCharacterEncoding(encoding);}// Pass control on to the next filterchain.doFilter(request, response);}/*** Place this filter into service.** @param filterConfig The filter configuration object*/public void init(FilterConfig filterConfig) throws ServletException {this.filterConfig = filterConfig;this.encoding = filterConfig.getInitParameter("encoding");String value = filterConfig.getInitParameter("ignore");if (value == null)this.ignore = true;else if (value.equalsIgnoreCase("true"))this.ignore = true;else if (value.equalsIgnoreCase("yes"))this.ignore = true;elsethis.ignore = false;}// ------------------------------------------------------ Protected Methods/*** Select an appropriate character encoding to be used, based on the* characteristics of the current request and/or filter initialization* parameters. If no character encoding should be set, return* <code>null</code>.* <p>* The default implementation unconditionally returns the value configured* by the <strong>encoding</strong> initialization parameter for this* filter.** @param request The servlet request we are processing*/protected String selectEncoding(ServletRequest request) {return (this.encoding);}}
<filter><filter-name>Set Character Encoding</filter-name><filter-class>filters.SetCharacterEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>UTF-8</param-value></init-param></filter><filter-mapping><filter-name>Set Character Encoding</filter-name><url-pattern>/*</url-pattern></filter-mapping>
#Application Resource for the logon.jsp
logon.jsp.title=登錄頁
logon.jsp.page.heading=歡迎 世界!
logon.jsp.prompt.username=用戶名:
logon.jsp.prompt.password=口令:
logon.jsp.prompt.submit=提交
logon.jsp.prompt.reset=復位#Application Resource for the main.jsp
main.jsp.title=主頁
main.jsp.welcome=歡迎:#Application Resource for the LogonAction.java
error.missing.username=<li><font color="red">沒有輸入用戶名</font></li>
error.missing.password=<li><font color="red">沒有輸入口令</font></li>#Application Resource for the UserInfoBo.java
error.noMatch=<li><font color="red">沒有匹配的用戶</font></li>#Application Resource for the UserInfoBo.java
error.logon.invalid=<li><font color="red">用戶名/口令是無效的</font></li>
error.removed.user=<li><font color="red">找不到該用戶</font></li>
error.unexpected=<li><font color="red">不可預期的錯誤</font></li>
#Application Resource for the logon.jsp
logon.jsp.title=\u767b\u5f55\u9875
logon.jsp.page.heading=\u6b22\u8fce \u4e16\u754c!
logon.jsp.prompt.username=\u7528\u6237\u540d:
logon.jsp.prompt.password=\u53e3\u4ee4:
logon.jsp.prompt.submit=\u63d0\u4ea4
logon.jsp.prompt.reset=\u590d\u4f4d#Application Resource for the main.jsp
main.jsp.title=\u4e3b\u9875
main.jsp.welcome=\u6b22\u8fce:#Application Resource for the LogonAction.java
error.missing.username=<li><font color="red">\u6ca1\u6709\u8f93\u5165\u7528\u6237\u540d</font></li>
error.missing.password=<li><font color="red">\u6ca1\u6709\u8f93\u5165\u53e3\u4ee4</font></li>#Application Resource for the UserInfoBo.java
error.noMatch=<li><font color="red">\u6ca1\u6709\u5339\u914d\u7684\u7528\u6237</font></li>#Application Resource for the UserInfoBo.java
error.logon.invalid=<li><font color="red">\u7528\u6237\u540d/\u53e3\u4ee4\u662f\u65e0\u6548\u7684</font></li>
error.removed.user=<li><font color="red">\u627e\u4e0d\u5230\u8be5\u7528\u6237</font></li>
error.unexpected=<li><font color="red">\u4e0d\u53ef\u9884\u671f\u7684\u9519\u8bef</font></li>
