Notice : Undefined index: HTTP_ACCEPT_ENCODING in C:\server\web\www.showyounger.com\s-system.php on line 2
写个filter,让你在哪怕是javabean中都可以随便读取http请求信息 | 小样儿(ShowYounger)
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package com.test.web.filter;
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.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class CommonFilter implements Filter {
private FilterConfig config = null ;
private String defaultEncode = "UTF-8" ;
private static final String CHARSET_ENCODE_PARAM_NAME= "Charset" ;
private static ThreadLocal<HttpServletRequest> requests = new ThreadLocal<HttpServletRequest>();
private static ThreadLocal<HttpServletResponse> responses = new ThreadLocal<HttpServletResponse>();
public static HttpServletRequest getRequest() {
return (HttpServletRequest) requests.get();
}
public static HttpServletResponse getResponse() {
return (HttpServletResponse) responses.get();
}
public static HttpSession getSession() {
return (HttpSession) getRequest().getSession();
}
public static HttpSession getSession( boolean create) {
return (HttpSession) getRequest().getSession(create);
}
public void init(FilterConfig config) throws ServletException {
this .config = config;
if ( this .config.getInitParameter(CHARSET_ENCODE_PARAM_NAME) != null ) {
defaultEncode = config.getInitParameter(CHARSET_ENCODE_PARAM_NAME);
}
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
ServletRequest srequest = request;
srequest.setCharacterEncoding(defaultEncode);
requests.set((HttpServletRequest) request);
responses.set((HttpServletResponse) response);
chain.doFilter(srequest, response);
}
public void destroy() {
this .config = null ;
}
}
<filter>
<filter-name>Common Filter</filter-name>
<filter- class >com.test.web.filter.CommonFilter</filter- class >
<init-param>
<param-name>Charset</param-name>
<param-value>UTF- 8 </param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>Common Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
logger.debug(CommonFilter.getRequest().getRemoteHost());