JAVA--將二進位流轉換成圖片檔案__JAVA

import java.io.ByteArrayInputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStream;/** * 將二進位流轉換成圖片檔案 * @author 晚風工作室 www.soservers.com * */public class ImgErToFileUtil {/** * 將接收的字串轉換成圖片儲存 * @param imgStr 二進位流轉換的字串 * @param imgPath 圖片的儲存路徑 * @param imgName 圖片的名稱 * @return  * 1：儲存正常 * 0：儲存失敗 */public static int saveToImgByStr(String imgStr,String imgPath,String imgName){try {System.out.println("===imgStr.length()====>" + imgStr.length()+ "=====imgStr=====>" + imgStr);} catch (Exception e) {e.printStackTrace();}int stateInt = 1;if(imgStr != null && imgStr.length() > 0){try {// 將字串轉換成二進位，用於顯示圖片  // 將上面產生的圖片格式字串 imgStr，還原成圖片顯示  byte[] imgByte = hex2byte( imgStr );  InputStream in = new ByteArrayInputStream(imgByte);File file=new File(imgPath,imgName);//可以是任何圖片格式.jpg,.png等FileOutputStream fos=new FileOutputStream(file);  byte[] b = new byte[1024];int nRead = 0;while ((nRead = in.read(b)) != -1) {fos.write(b, 0, nRead);}fos.flush();fos.close();in.close();} catch (Exception e) {stateInt = 0;e.printStackTrace();} finally {}}return stateInt;}/** * 將二進位轉換成圖片儲存 * @param imgStr 二進位流轉換的字串 * @param imgPath 圖片的儲存路徑 * @param imgName 圖片的名稱 * @return  * 1：儲存正常 * 0：儲存失敗 */public static int saveToImgByBytes(File imgFile,String imgPath,String imgName){int stateInt = 1;if(imgFile.length() > 0){try {File file=new File(imgPath,imgName);//可以是任何圖片格式.jpg,.png等FileOutputStream fos=new FileOutputStream(file);FileInputStream fis = new FileInputStream(imgFile);  byte[] b = new byte[1024];int nRead = 0;while ((nRead = fis.read(b)) != -1) {fos.write(b, 0, nRead);}fos.flush();fos.close();fis.close();} catch (Exception e) {stateInt = 0;e.printStackTrace();} finally {}}return stateInt;}/** * 二進位轉字串 * @param b * @return */public static String byte2hex(byte[] b) // 二進位轉字串{StringBuffer sb = new StringBuffer();String stmp = "";for (int n = 0; n < b.length; n++) {stmp = Integer.toHexString(b[n] & 0XFF);if (stmp.length() == 1) {sb.append("0" + stmp);} else {sb.append(stmp);}}return sb.toString();}/** * 字串轉二進位 * @param str 要轉換的字串 * @return  轉換後的位元組 */public static byte[] hex2byte(String str) { // 字串轉二進位if (str == null)return null;str = str.trim();int len = str.length();if (len == 0 || len % 2 == 1)return null;byte[] b = new byte[len / 2];try {for (int i = 0; i < str.length(); i += 2) {b[i / 2] = (byte) Integer.decode("0X" + str.substring(i, i + 2)).intValue();}return b;} catch (Exception e) {return null;}}}