- import java.io.ByteArrayInputStream;
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.FileOutputStream;
- import java.io.InputStream;
- /**
- * 将二进制流转换成图片文件
- */
- public class ImgErToFileUtil {
- /**
- * 将接收的字符串转换成图片保存
- * @param imgStr 二进制流转换的字符串
- * @param imgPath 图片的保存路径
- * @param imgName 图片的名称
- * @return
- * 1:保存正常
- * 0:保存失败
- */
- 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 {
- // 将字符串转换成二进制,用于显示图片
- // 将上面生成的图片格式字符串 imgStr,还原成图片显示
- byte[] imgByte = hex2byte( imgStr );
- InputStream in = new ByteArrayInputStream(imgByte);
- File file=new File(imgPath,imgName);//可以是任何图片格式.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;
- }
- /**
- * 将二进制转换成图片保存
- * @param imgStr 二进制流转换的字符串
- * @param imgPath 图片的保存路径
- * @param imgName 图片的名称
- * @return
- * 1:保存正常
- * 0:保存失败
- */
- public static int saveToImgByBytes(File imgFile,String imgPath,String imgName){
- int stateInt = 1;
- if(imgFile.length() > 0){
- try {
- File file=new File(imgPath,imgName);//可以是任何图片格式.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;
- }
- /**
- * 二进制转字符串
- * @param b
- * @return
- */
- public static String byte2hex(byte[] b) // 二进制转字符串
- {
- 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();
- }
- /**
- * 字符串转二进制
- * @param str 要转换的字符串
- * @return 转换后的二进制数组
- */
- public static byte[] hex2byte(String str) { // 字符串转二进制
- 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;
- }
- }
- }
- //该片段来自于http://www.codesnippet.cn/detail/040520149442.html
来源: http://www.codesnippet.cn/detail/040520149442.html