我的全部给你 一个filter类 package cn.anycare.struts;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;/** * server.xml中加入=======================================URIEncoding="GB2312" * <Connector port="8081" maxThreads="150" minSpareThreads="25" maxSpareThreads="75" enableLookups="false" redirectPort="8443" acceptCount="100" debug="0" connectionTimeout="20000" disableUploadTimeout="true" URIEncoding="GB2312"/> * <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 $Revision$ $Date$ */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 used if (ignore || (request.getCharacterEncoding() == null)) { String encoding = selectEncoding(request); if (encoding != null) request.setCharacterEncoding(encoding); } // Pass control on to the next filter chain.doFilter(request, response); } public FilterConfig getFilterConfig() { return this.filterConfig; } public void setFilterConfig(FilterConfig filterConfig) { this.filterConfig = filterConfig; } /** * 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; else this.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); }}
web.xml中 <filter> <filter-name>Set Character Encoding</filter-name> <filter-class>cn.anycare.struts.SetCharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>GB2312</param-value> </init-param> </filter> <filter-mapping> <filter-name>Set Character Encoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
一个filter类
package cn.anycare.struts;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;/**
* server.xml中加入=======================================URIEncoding="GB2312"
* <Connector
port="8081" maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
debug="0" connectionTimeout="20000"
disableUploadTimeout="true" URIEncoding="GB2312"/>
* <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 $Revision$ $Date$
*/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 used
if (ignore || (request.getCharacterEncoding() == null)) {
String encoding = selectEncoding(request);
if (encoding != null)
request.setCharacterEncoding(encoding);
} // Pass control on to the next filter
chain.doFilter(request, response); } public FilterConfig getFilterConfig() {
return this.filterConfig;
} public void setFilterConfig(FilterConfig filterConfig) {
this.filterConfig = filterConfig;
} /**
* 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;
else
this.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>cn.anycare.struts.SetCharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>GB2312</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>Set Character Encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
* <Connector
port="8081" maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
debug="0" connectionTimeout="20000"
disableUploadTimeout="true" URIEncoding="GB2312"/>