修复业绩bug

jyy

2021-06-19 756e16e090b15c7fd8648f55f5451367face6abc

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package com.matrix.system.hive.plugin.util;
 
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
 
import javax.servlet.http.HttpServletResponse;
 
public class FileDownload {
 
    /**
     * @param response
     * @param filePath
     *            //文件完整路径(包括文件名和扩展名)
     * @param fileName
     *            //下载后看到的文件名
     * @return 文件名
     */
    public static void fileDownload(final HttpServletResponse response, String filePath, String fileName) throws Exception {
 
        byte[] data = toByteArray2(filePath);
        fileName = URLEncoder.encode(fileName, "UTF-8");
        response.reset();
        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
        response.addHeader("Content-Length", "" + data.length);
        response.setContentType("application/octet-stream;charset=UTF-8");
        OutputStream outputStream = new BufferedOutputStream(response.getOutputStream());
        outputStream.write(data);
        outputStream.flush();
        outputStream.close();
        response.flushBuffer();
 
    }
 
    /**
     * 读取到字节数组2
     * 
     * @param filePath
     * @return
     * @throws IOException
     */
    public static byte[] toByteArray2(String filePath) throws IOException {
 
        File f = new File(filePath);
        if (!f.exists()) {
            throw new FileNotFoundException(filePath);
        }
 
        FileChannel channel = null;
        FileInputStream fs = null;
        try {
            fs = new FileInputStream(f);
            channel = fs.getChannel();
            ByteBuffer byteBuffer = ByteBuffer.allocate((int) channel.size());
            while ((channel.read(byteBuffer)) > 0) {
            }
            return byteBuffer.array();
        } catch (IOException e) {
            e.printStackTrace();
            throw e;
        } finally {
            try {
                channel.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                fs.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
 
    public static String getClasspath() {
        String path = (String.valueOf(Thread.currentThread().getContextClassLoader())).replaceAll("file:/", "").replaceAll("%20", " ").trim();
        if (path.indexOf(":") != 1) {
            path = File.separator + path;
        }
        return path;
    }
}