package io.dataease.filter;
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import io.dataease.result.ResultMessage;
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import io.dataease.utils.JsonUtil;
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import jakarta.servlet.*;
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import jakarta.servlet.FilterConfig;
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import jakarta.servlet.http.HttpServletResponse;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.core.Ordered;
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import org.springframework.http.HttpHeaders;
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import org.springframework.stereotype.Component;
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import java.io.IOException;
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@Component
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public class HtmlResourceFilter implements Filter, Ordered {
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@Value("${dataease.http.cache:false}")
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private Boolean httpCache;
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@Override
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public int getOrder() {
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return 99;
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}
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@Override
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public void init(FilterConfig filterConfig) throws ServletException {
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}
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@Override
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public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
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HttpServletResponse httpResponse = (HttpServletResponse) servletResponse;
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if(httpCache == null || !httpCache){
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// 禁用缓存
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httpResponse.setHeader(HttpHeaders.CACHE_CONTROL, "no-cache");
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httpResponse.setHeader("Cache", "no-cache");
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httpResponse.setHeader(HttpHeaders.PRAGMA, "no-cache");
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httpResponse.setHeader(HttpHeaders.EXPIRES, "0");
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}
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// 继续执行过滤器链
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try {
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filterChain.doFilter(servletRequest, httpResponse);
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}catch (Exception e){
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httpResponse.setContentType("application/json");
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httpResponse.setCharacterEncoding("UTF-8");
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httpResponse.setStatus(HttpServletResponse.SC_BAD_REQUEST);
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httpResponse.getWriter().write(JsonUtil.toJSONString(new ResultMessage(HttpServletResponse.SC_BAD_REQUEST,e.getMessage())).toString());
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}
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}
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@Override
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public void destroy() {
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Filter.super.destroy();
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}
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}
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