Java 根据网络地址URL获取文件_java根据url获取文件流

一、功能需求

系统需要根据提供的文件地址URL获取该文件,代码实现如下:

二、解决办法

  /**
     * 根据URL地址获取文件
     * @param path URL网络地址
     * @return File
     */
    private static File getFileByHttpURL(String path){
        String newUrl = path.split("[?]")[0];
        String[] suffix = newUrl.split("/");
        //得到最后一个分隔符后的名字
        String fileName = suffix[suffix.length - 1];
        File file = null;
        InputStream inputStream = null;
        OutputStream outputStream = null;
        try{
            file = File.createTempFile("report",fileName);//创建临时文件
            URL urlFile = new URL(newUrl);
            inputStream = urlFile.openStream();
            outputStream = new FileOutputStream(file);

            int bytesRead = 0;
            byte[] buffer = new byte[8192];
            while ((bytesRead=inputStream.read(buffer,0,8192))!=-1) {
                outputStream.write(buffer, 0, bytesRead);
            }
        }catch (Exception e) {
            e.printStackTrace();
        }finally {
            try {
                if (null != outputStream) {
                    outputStream.close();
                }
                if (null != inputStream) {
                    inputStream.close();
                }

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return file;
    }
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