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3 天以前 7f9e375391e30fd3c367cb5a080a609a6e25e524

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package com.zbkj.admin.filter;
 
 
import javax.servlet.ServletOutputStream;
import javax.servlet.WriteListener;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
 
/**
 * Response包装类
 */
public class ResponseWrapper extends HttpServletResponseWrapper {
 
    private ByteArrayOutputStream buffer;
 
    private ServletOutputStream out;
 
    public ResponseWrapper(HttpServletResponse httpServletResponse) {
        super(httpServletResponse);
        buffer = new ByteArrayOutputStream();
        out = new WrapperOutputStream(buffer);
    }
 
    @Override
    public ServletOutputStream getOutputStream() {
        return out;
    }
 
    @Override
    public void flushBuffer()
            throws IOException {
        if (out != null) {
            out.flush();
        }
    }
 
    public byte[] getContent()
            throws IOException {
        flushBuffer();
        return buffer.toByteArray();
    }
 
    static class WrapperOutputStream extends ServletOutputStream {
        private ByteArrayOutputStream bos;
 
        public WrapperOutputStream(ByteArrayOutputStream bos) {
            this.bos = bos;
        }
 
        @Override
        public void write(int b) {
            bos.write(b);
        }
 
        @Override
        public boolean isReady() {
            return false;
 
        }
 
        @Override
        public void setWriteListener(WriteListener arg0) {
 
        }
    }
}