事例1：
package com.apexsoft.mobile.utils;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class ImgToString 
{
public static String getImageStr(String imgFile) {// 將圖片文件轉(zhuǎn)化為字節(jié)數(shù)組字符串，并對(duì)其進(jìn)行Base64編碼處理
// String imgFile = "d:\\111.jpg";// 待處理的圖片
InputStream in = null;
byte[] data = null;
// 讀取圖片字節(jié)數(shù)組
try {
in = new FileInputStream(imgFile);
data = new byte[in.available()];
in.read(data);
in.close();
} catch (IOException e) {
e.printStackTrace();
}
// 對(duì)字節(jié)數(shù)組Base64編碼
BASE64Encoder encoder = new BASE64Encoder();
return encoder.encode(data);// 返回Base64編碼過(guò)的字節(jié)數(shù)組字符串
}
/** *//**
* 將字符串轉(zhuǎn)為圖片
*
* @param imgStr
* @return
*/
public static boolean generateImage(String imgStr, String imgFile)
throws Exception {// 對(duì)字節(jié)數(shù)組字符串進(jìn)行Base64解碼并生成圖片
if (imgStr == null) // 圖像數(shù)據(jù)為空
return false;
BASE64Decoder decoder = new BASE64Decoder();
try {
// Base64解碼
byte[] b = decoder.decodeBuffer(imgStr);
for (int i = 0; i < b.length; ++i) {
if (b[i] < 0) {// 調(diào)整異常數(shù)據(jù)
b[i] += 256;
}
}
// 生成jpeg圖片
String imgFilePath = imgFile;// 新生成的圖片
OutputStream out = new FileOutputStream(imgFilePath);
out.write(b);
out.flush();
out.close();
return true;
} catch (Exception e) {
throw e;
}
}
public static void main(String[]args){
String imgStr = ImgToString.getImageStr("C:\\Users\\think\\Pictures\\打開(kāi)Intenet選項(xiàng)1.jpg");
System.out.println(imgStr);
try {
ImgToString.generateImage(imgStr, "D:\\3.jpg");
} catch (Exception e) {
e.printStackTrace();
}
}
}
事例2：
package com.apexsoft.mobile.utils;
import java.awt.image.BufferedImage;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.RandomAccessFile;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import javax.imageio.ImageIO;
public class ImgToString2 {
/** *//**
* @Title getImgeHexString
* @Description 網(wǎng)絡(luò)圖片轉(zhuǎn)換成二進(jìn)制字符串
* @param URLName 網(wǎng)絡(luò)圖片地址
* @param type 圖片類型
* @return String 轉(zhuǎn)換結(jié)果
* @throws
*/
/**//*
public static String getImgeHexString(String URLName,String type) {
String res = null;
try {
int HttpResult = 0; // 服務(wù)器返回的狀態(tài)
URL url = new URL(URLName); // 創(chuàng)建URL
URLConnection urlconn = url.openConnection(); // 試圖連接并取得返回狀態(tài)碼
urlconn.connect();
HttpURLConnection httpconn = (HttpURLConnection) urlconn;
HttpResult = httpconn.getResponseCode();
System.out.println(HttpResult);
if (HttpResult != HttpURLConnection.HTTP_OK) // 不等于HTTP_OK則連接不成功
System.out.print("fail");
else {
BufferedInputStream bis = new BufferedInputStream(urlconn.getInputStream());
BufferedImage bm = ImageIO.read(bis);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ImageIO.write(bm, type, bos);
bos.flush();
byte[] data = bos.toByteArray();
res = byte2hex(data);
bos.close();
}
} catch (Exception e) {
e.printStackTrace();
}
return res;
}*/
public static void main(String[]args){
String imgStr = ImgToString2.getImgeHexString("C:\\Users\\think\\Pictures\\打開(kāi)Intenet選項(xiàng)1.jpg");
System.out.println(imgStr);
}
public static String getImgeHexString(String imgFile) {
String res = null;
try {
InputStream in = null;
byte[] data = null;
// 讀取圖片字節(jié)數(shù)組
in = new FileInputStream(imgFile);
data = new byte[in.available()];
in.read(data);
in.close();
BufferedInputStream bis = new BufferedInputStream(in);
BufferedImage bm = ImageIO.read(bis);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ImageIO.write(bm, "jpg", bos);
bos.flush();
data = bos.toByteArray();
res = byte2hex(data);
bos.close();
} catch (Exception e) {
e.printStackTrace();
}
return res;
}
/** *//**
* @title 根據(jù)二進(jìn)制字符串生成圖片
* @param data 生成圖片的二進(jìn)制字符串
* @param fileName 圖片名稱(完整路徑)
* @param type 圖片類型
* @return
*/
public static void saveImage(String data, String fileName,String type) {
BufferedImage image = new BufferedImage(300, 300,BufferedImage.TYPE_BYTE_BINARY);
ByteArrayOutputStream byteOutputStream = new ByteArrayOutputStream();
try {
ImageIO.write(image, type, byteOutputStream);
// byte[] date = byteOutputStream.toByteArray();
byte[] bytes = hex2byte(data);
System.out.println("path:" + fileName);
RandomAccessFile file = new RandomAccessFile(fileName, "rw");
file.write(bytes);
file.close();
} catch (IOException e) {
e.printStackTrace();
}
}
/** *//**
* 反格式化byte
*
* @param s
* @return
*/
public static byte[] hex2byte(String s) {
byte[] src = s.toLowerCase().getBytes();
byte[] ret = new byte[src.length / 2];
for (int i = 0; i < src.length; i += 2) {
byte hi = src[i];
byte low = src[i + 1];
hi = (byte) ((hi >= 'a' && hi <= 'f') ? 0x0a + (hi - 'a')
: hi - '0');
low = (byte) ((low >= 'a' && low <= 'f') ? 0x0a + (low - 'a')
: low - '0');
ret[i / 2] = (byte) (hi << 4 | low);
}
return ret;
}
/** *//**
* 格式化byte
*
* @param b
* @return
*/
public static String byte2hex(byte[] b) {
char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A',
'B', 'C', 'D', 'E', 'F' };
char[] out = new char[b.length * 2];
for (int i = 0; i < b.length; i++) {
byte c = b[i];
out[i * 2] = Digit[(c >>> 4) & 0X0F];
out[i * 2 + 1] = Digit[c & 0X0F];
}
return new String(out);
}
}
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