package com.whyc.filter;
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import com.whyc.pojo.User;
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import lombok.extern.slf4j.Slf4j;
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import javax.servlet.*;
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import javax.servlet.annotation.WebFilter;
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import javax.servlet.annotation.WebInitParam;
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import javax.servlet.http.HttpServletRequest;
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import java.io.IOException;
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import java.io.PrintWriter;
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@Slf4j
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@WebFilter(filterName = "loginFilter",urlPatterns = "/*",initParams = {
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@WebInitParam(name = "exclusions",value = "*.css,*.js")
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})
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//@WebInitParam(name = "exclusions",value = "*.css,*.js")
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public class LoginFilter implements Filter {
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private String exclusions = "";
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public void destroy() {
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}
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public void doFilter(ServletRequest req, ServletResponse resp,
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FilterChain chain) throws IOException, ServletException {
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HttpServletRequest request=(HttpServletRequest)req;
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String URL=request.getRequestURI();
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String[] uri=request.getRequestURI().split("/");
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String source="";
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if(uri.length>0) {
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source = uri[uri.length - 1];
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}
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String suffix = source.substring(source.indexOf(".")+1);
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User user=(User)request.getSession().getAttribute("user");
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//不拦截swagger的资源请求,以及登录请求
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if(URL.indexOf("swagger-resources")>-1 ||URL.indexOf("swagger-ui")>-1 ||URL.indexOf("v2/api-docs")>-1||URL.indexOf("login")>-1){
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chain.doFilter(req,resp);
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}
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//不拦截静态资源css/js
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else if(exclusions.indexOf(suffix)>-1){
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chain.doFilter(req,resp);
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}
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else if(user!=null){
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chain.doFilter(req, resp);
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}else{
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PrintWriter out=resp.getWriter();
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out.print("<script charset='UTF-8'>window.location.href='index.html'</script>");
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}
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}
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public void init(FilterConfig config) throws ServletException {
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exclusions =config.getInitParameter("exclusions");
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}
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}
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