package org.jeecg.config.filter;
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import org.jeecg.common.constant.CommonConstant;
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import org.jeecg.config.sign.util.BodyReaderHttpServletRequestWrapper;
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import javax.servlet.*;
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import javax.servlet.http.HttpServletRequest;
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import java.io.IOException;
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/**
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* 针对post请求，将HttpServletRequest包一层 保留body里的参数
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* @Author taoYan
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* @Date 2022/4/25 19:19
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**/
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public class RequestBodyReserveFilter implements Filter {
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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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ServletRequest requestWrapper = null;
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if(servletRequest instanceof HttpServletRequest) {
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HttpServletRequest req = (HttpServletRequest) servletRequest;
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// POST请求类型，才获取POST请求体
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if(CommonConstant.HTTP_POST.equals(req.getMethod())){
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requestWrapper = new BodyReaderHttpServletRequestWrapper(req);
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}
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}
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if(requestWrapper == null) {
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filterChain.doFilter(servletRequest, servletResponse);
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} else {
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filterChain.doFilter(requestWrapper, servletResponse);
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}
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}
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}
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