<!– session过滤filter –>
<filter>
<filter-name>SessionFilter</filter-name>
<filter-class>
com.iqbon.jcms.web.util.SessionFilter
</filter-class>
<init-param>
<param-name>excludedPages</param-name>
<param-value>/admin/login.do</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>SessionFilter</filter-name>
<url-pattern>/admin/*</url-pattern>
</filter-mapping>
可以看到url-pattern的设置里面过滤的url规则是/admin/*,如果要把/admin/login.do排除在过滤url之外。
可以结合init-param的初始化参数和HttpServletRequest的getServletPath()方法来判断。
首先加上初始化参数:
<init-param>
<param-name>excludedPages</param-name>
<param-value>/admin/login.do</param-value>
</init-param>
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
import org.apache.commons.lang3.StringUtils
import com.iqbon.jcms.util.KeyConstant
/**
* session过滤器
*/
public class SessionFilter implements Filter {
/**
* 需要排除的页面
*/
private String excludedPages
private String[] excludedPageArray
/**
* @see Filter#destroy()
*/
public void destroy() {
return
}
/**
* 对session进行判断当前访问是否有登录
*/
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
boolean isExcludedPage = false
for (String page : excludedPageArray) {//判断是否在过滤url之外
if(((HttpServletRequest) request).getServletPath().equals(page)){
isExcludedPage = true
break
}
}
if (isExcludedPage) {//在过滤url之外
chain.doFilter(request, response)
} else {//不在过滤url之外,判断session是否存在
HttpSession session = ((HttpServletRequest) request).getSession()
if (session == null || session.getAttribute(KeyConstant.SESSION_KEY_USER) == null) {
((HttpServletResponse) response).sendRedirect(“/login.htm”)
} else {
chain.doFilter(request, response)
}
}
}
/**
* 初始化函数,获取需要排除在外的url
*/
public void init(FilterConfig fConfig) throws ServletException {
excludedPages = fConfig.getInitParameter(“excludedPages”)
if (StringUtils.isNotEmpty(excludedPages)) {
excludedPageArray = excludedPages.split(“,”)
}
return
}
}
可以在<filter>的<init-param>中进行配置,然后在filter实现中获取配置的例外参数,并进行判断是否进行过滤 *** 作可以做形如下面的配置:
<init-param>
<param-name>exclusions</param-name>
<!-- 例外添加 不需要过滤 *** 作的接口 -->
<param-value>/login.jsp,login.action</param-value>
欢迎分享,转载请注明来源:内存溢出
评论列表(0条)