package com.zhanghp.filter;

import com.zhanghp.common.R;
import com.zhanghp.exception.GlobalExceptionHandler;
import com.zhanghp.util.ServletUtils;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;


/**
 * @author zhanghp
 * @date 2022-07-22 16:01
 */
@Component
@RequiredArgsConstructor
public class MyFilter extends OncePerRequestFilter {

    private final GlobalExceptionHandler globalExceptionHandler;

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws ServletException, IOException {
        try {
            System.out.println("123");
//            int i = 1/0;
        } catch (Exception e) {
            R<?> r = globalExceptionHandler.allExceptionHandler(e);
            ServletUtils.writeJson(response, r);
            return;
        }
        chain.doFilter(request, response);
    }
}