package cn.com.goldenwater.dcproj.config;

import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;

@Component
public class PdfHeaderInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if(request.getRequestURI().contains(".jsp") && request.getRequestURI().contains("/upload")){
            response.setCharacterEncoding("UTF-8");
            response.setContentType("application/json;charset=utf-8");
            PrintWriter printWriter = response.getWriter();
            printWriter.write("已被系统禁止！");
            return false;
        }
        if (request.getRequestURI().endsWith(".pdf") || request.getRequestURI().endsWith(".PDF")) {
            String filename = request.getRequestURI().substring(request.getRequestURI().lastIndexOf("/")+1);
            // 添加Header，例如：Content-Disposition: attachment; filename="download.pdf"
            response.setHeader("Content-Disposition", "attachment; filename="+filename);
        }
        return true;
    }
//
//    @Override
//    public void postHandle(HttpServletRequest request,
//                           HttpServletResponse response, Object handler,
//                           ModelAndView modelAndView) throws Exception {
//    }

//    @Override
//    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
//        // 检查请求的URL是否以.pdf结尾
//        if (request.getRequestURI().endsWith(".pdf") || request.getRequestURI().endsWith(".PDF")) {
//            String filename = request.getRequestURI().substring(request.getRequestURI().lastIndexOf("/")+1);
//            // 添加Header，例如：Content-Disposition: attachment; filename="download.pdf"
//            response.setHeader("Content-Disposition", "attachment; filename="+filename);
//        }
//    }
}