com.itcoon.common.tracelog.component.RequestWrapper Maven / Gradle / Ivy

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package com.itcoon.common.tracelog.component;

import org.springframework.util.StreamUtils;

import javax.servlet.ReadListener;
import javax.servlet.ServletInputStream;
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.Charset;

/**
 *  
 * @since 2019-09-07
 */
public class RequestWrapper extends HttpServletRequestWrapper {
    private String body;
    private Charset charSet;

    public RequestWrapper(HttpServletRequest request) {
        super(request);
        try {
            String charSetStr = request.getCharacterEncoding();
            if (charSetStr == null) {
                charSetStr = "UTF-8";
            }
            charSet = Charset.forName(charSetStr);
            this.body = StreamUtils.copyToString(request.getInputStream(), charSet);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public String getRequestBody(){
        return this.body;
    }

    @Override
    public ServletInputStream getInputStream() {
        final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(body.getBytes(charSet));
        ServletInputStream servletInputStream = new ServletInputStream() {
            @Override
            public boolean isFinished() {
                return false;
            }

            @Override
            public boolean isReady() {
                return false;
            }

            @Override
            public void setReadListener(ReadListener readListener) {
            }

            @Override
            public int read() {
                return byteArrayInputStream.read();
            }
        };
        return servletInputStream;
    }

    @Override
    public BufferedReader getReader() {
        return new BufferedReader(new InputStreamReader(this.getInputStream()));
    }

}