当前位置：首页 > news >正文

springboot访问地址时404_SpringBoot配置一个过滤器获取远程地址、访问路径等信息

news 来源：原创 2024/9/22 19:37:35

第一步、编写一个过滤器。

package com.xiaop.zhanchi.filters;import org.apache.commons.lang.StringUtils;import javax.servlet.*;import javax.servlet.http.HttpServletRequest;import java.io.IOException;public class AddressFilter implements Filter{    public static final String COMMA = ",";    @Override    public void init(FilterConfig filterConfig) throws ServletException {        System.out.println("AddressFilter is init....");    }    @Override    public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException {        HttpServletRequest httpRequest = (HttpServletRequest) request;        String remoteAddr = getIpAddr(httpRequest);        String operation = httpRequest.getRequestURI();        System.out.println("remoteAddr:"+remoteAddr);        System.out.println("operation:"+operation);        filterChain.doFilter(request, response);    }    @Override    public void destroy() {        System.out.println("AddressFilter was destroyed....");    }    /**     * 获取IP地址     *     * 使用Nginx等反向代理软件， 则不能通过request.getRemoteAddr()获取IP地址     * 如果使用了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP地址，X-Forwarded-For中第一个非unknown的有效IP字符串，则为真实IP地址     *     * @param request     *            {@link HttpServletRequest}     * @return ipaddr     */    public static String getIpAddr(HttpServletRequest request) {        String ip = null;        String unkownStr = "unknown";        if (request == null) {            return "";        }        System.out.println("remote addr:"+request.getRemoteAddr());        try {            ip = request.getHeader("x-forwarded-for");            if (StringUtils.isEmpty(ip) || unkownStr.equalsIgnoreCase(ip)) {                ip = request.getHeader("Proxy-Client-IP");            }            if (StringUtils.isEmpty(ip) || ip.length() == 0 || unkownStr.equalsIgnoreCase(ip)) {                ip = request.getHeader("WL-Proxy-Client-IP");            }            if (StringUtils.isEmpty(ip) || unkownStr.equalsIgnoreCase(ip)) {                ip = request.getHeader("HTTP_CLIENT_IP");            }            if (StringUtils.isEmpty(ip) || unkownStr.equalsIgnoreCase(ip)) {                ip = request.getHeader("HTTP_X_FORWARDED_FOR");            }            if (StringUtils.isEmpty(ip) || unkownStr.equalsIgnoreCase(ip)) {                ip = request.getRemoteAddr();            }        } catch (Exception e) {            e.printStackTrace();        }        // //使用代理，则获取第一个IP地址        int ipLength = 15;        if (!StringUtils.isEmpty(ip) && ip.length() > ipLength) {            if (ip.indexOf(COMMA) > 0) {                ip = ip.substring(0, ip.indexOf(COMMA));            }        }        return ip;    }}

第二步，加载刚刚写好的过滤器

package com.xiaop.zhanchi.config;import com.xiaop.zhanchi.filters.AddressFilter;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import javax.servlet.Filter;@Configurationpublic class BeanConfig {    @Bean    public Filter addressFilterBean() {        AddressFilter filter = new AddressFilter();        return filter;    }}

最后，我们启动工程，访问了一个测试地址，可以看到过滤器已经生效了