String inputStream file转化

最新推荐文章于 2022-03-16 16:57:02 发布

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最新推荐文章于 2022-03-16 16:57:02 发布

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原文链接：http://www.cnblogs.com/haogeBlogs/p/6008374.html

本文介绍了在Java中如何实现不同格式之间的文件流转换，包括String到InputStream、InputStream到String、File到InputStream、InputStream到File以及String到InputSource的转换方法。

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String --> InputStream
ByteArrayInputStream stream = new ByteArrayInputStream(str.getBytes());

InputStream --> String
String inputStream2String(InputStream is){
   BufferedReader in = new BufferedReader(new InputStreamReader(is));
   StringBuffer buffer = new StringBuffer();
   String line = "";
   while ((line = in.readLine()) != null){
     buffer.append(line);
   }
   return buffer.toString();
}

File --> InputStream

InputStream in = new FileInputStream(file);

InputStream --> File

public void inputstreamtofile(InputStream ins,File file){
   OutputStream os = new FileOutputStream(file);
   int bytesRead = 0;
   byte[] buffer = new byte[8192];
   while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {
      os.write(buffer, 0, bytesRead);
   }
   os.close();
   ins.close();
}

String--> InputSource

InputSource is=new InputSource(new StringReader(xmlStr))

转载于:https://www.cnblogs.com/haogeBlogs/p/6008374.html