初始化项目

唐耀东

2021-12-01 ac56d8fbfbe82096da31ed9f73bc29308284edfe

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package com.ruoyi.common.filter;
 
import cn.hutool.core.io.IoUtil;
 
import javax.servlet.ReadListener;
import javax.servlet.ServletInputStream;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
 
/**
 * 构建可重复读取inputStream的request
 *
 * @author ruoyi
 */
public class RepeatedlyRequestWrapper extends HttpServletRequestWrapper {
    private final byte[] body;
 
    public RepeatedlyRequestWrapper(HttpServletRequest request, ServletResponse response) throws IOException {
        super(request);
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
 
        body = IoUtil.readUtf8(request.getInputStream()).getBytes(StandardCharsets.UTF_8);
    }
 
    @Override
    public BufferedReader getReader() throws IOException {
        return new BufferedReader(new InputStreamReader(getInputStream()));
    }
 
    @Override
    public ServletInputStream getInputStream() throws IOException {
        final ByteArrayInputStream bais = new ByteArrayInputStream(body);
        return new ServletInputStream() {
            @Override
            public int read() throws IOException {
                return bais.read();
            }
 
            @Override
            public int available() throws IOException {
                return body.length;
            }
 
            @Override
            public boolean isFinished() {
                return false;
            }
 
            @Override
            public boolean isReady() {
                return false;
            }
 
            @Override
            public void setReadListener(ReadListener readListener) {
 
            }
        };
    }
}