学步园

import java.io.File;<br /> import java.io.FileInputStream;<br /> import java.io.FileOutputStream;<br /> import java.io.IOException;</p> <p>import sun.misc.BASE64Decoder;<br /> import sun.misc.BASE64Encoder;</p> <p>public class FileUtil {</p> <p> public static File saveFile(String fileContent, String filePath)<br /> throws IOException {</p> <p> if (fileContent == null) {<br /> return null;<br /> }<br /> BASE64Decoder decoder = new BASE64Decoder();<br /> byte[] picBinary = decoder.decodeBuffer(fileContent);<br /> File file = new File(filePath);<br /> FileOutputStream out = new FileOutputStream(file);<br /> out.write(picBinary);<br /> out.close();<br /> return file;<br /> }</p> <p> public static String readFile(String filePath) {</p> <p> try {<br /> BASE64Encoder encoder = new BASE64Encoder();<br /> File file = new File(filePath);<br /> FileInputStream in = new FileInputStream(file);<br /> byte[] b = new byte[(int) file.length()];<br /> in.read(b);<br /> String result = encoder.encode(b);<br /> in.close();<br /> return result;<br /> } catch (Exception e) {<br /> e.printStackTrace();<br /> }<br /> return null;<br /> }</p> <p> public static void deleteFile(String fileName) {</p> <p> File file = new File(fileName);<br /> if (file.exists() && file.isFile()) {<br /> file.delete();<br /> }<br /> }<br /> }