java - java过滤器类doFilter（）没有被调用

Question

您好，我创建了一个过滤器类并配置 web.xml，如下所示：

<filter>
    <filter-name>LoginFilter</filter-name>
    <filter-class>my.web.auth.LoginFilter</filter-class>
    <init-param>
        <param-name>test-param</param-name>
        <param-value>This param is for testing</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>LoginFilter</filter-name>
    <url-pattern>/html/test/*</url-pattern>
</filter-mapping>

当我访问 URL http://{myJBoss}/html/test/index.htm 时，会调用 LoginFilter 的 init() 但不会调用 doFilter()

这是我的过滤器类的摘录：

public void init(FilterConfig config) throws ServletException {
    log.debug("[201207bb] init");  //******This line can be seen in log file
    this.config = config;
    String testParam = config.getInitParameter("test-param");
    log.debug("test-param="+testParam);  //******* This is output correctly too
}

public void doFilter(ServletRequest req, ServletResponse res,
        FilterChain chain) throws IOException, ServletException {
    log.debug("[201207bb] doFilter");  //*****This line didn't appear in log file

    HttpServletRequest request = (HttpServletRequest) req;

    //Get the IP address of client machine.
    String ipAddress = request.getRemoteAddr();

    //Log the IP address and current timestamp.
    log.debug("IP "+ipAddress + ", Time "  + new Date().toString());
    chain.doFilter(req, res);
}

有谁知道为什么会这样？我也试过jsp，结果一样。

Answer 1

问题解决了。url-pattern 设置不正确。调用 init() 并不意味着正确设置了 url 模式。