【Java原生图片Base64转码与Base64解码】原文地址
import org.apache.commons.codec.binary.*;
import java.io.*;
import java.net.*;
/**
* 将file文件转换为Base64
* 将base64编码字符串解码成file
*
* @author朱永胜
*/
public class File2Base64Util {
/**
* 对字节数组字符串进行Base64解码并生成图片
*
* @param fileStr图片数据
* @param fileFilePath 保存图片全路径地址
*/
public static Boolean generateBase64StringToFile(String fileStr, String fileFilePath) {
if (fileStr == null) {
return false;
}
try {
byte[] b = Base64.decodeBase64(fileStr);
for (int i = 0;
i < b.length;
++i) {
if (b[i] < 0) {
b[i] += 256;
}
}
OutputStream out = new FileOutputStream(fileFilePath);
out.write(b);
out.flush();
out.close();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}/**
* 将文件转换成Base64编码
* 将文件转化为字节数组字符串，并对其进行Base64编码处理
*
* @param localFilePath 待处理图片
*/
public static String getFileBase64StrByLocalFile(String localFilePath) {
InputStream in = null;
byte[] data = https://www.it610.com/article/null;
//读取图片字节数组
try {
in = new FileInputStream(localFilePath);
data = new byte[in.available()];
in.read(data);
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (in != null) {
in.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
if (data == null || data.length == 0) {
return"";
}
return new String(Base64.encodeBase64(data));
}/**
* 将文件转换成Base64编码
* 将文件转化为字节数组字符串，并对其进行Base64编码处理
*
* @param fileUrl 待处理文件网络地址
*/
public static String getFileBase64StrByUrl(String fileUrl) {
BufferedInputStream in = null;
ByteArrayOutputStream out = null;
try {
URL ur = new URL(fileUrl);
in = new BufferedInputStream(ur.openStream());
out = new ByteArrayOutputStream(1024);
byte[] temp = new byte[1024];
int size = 0;
while ((size = in.read(temp)) != -1) {
out.write(temp, 0, size);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (in != null) {
in.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
if (out == null) {
return "";
}
byte[] content = out.toByteArray();
return new String(Base64.encodeBase64(content));
}public static void main(String[] args) {
//待读取图片地址
String imgFile = "d:\\source.png";
//待处理的图片
String sourceImage = getFileBase64StrByLocalFile(imgFile);
String destImagePath = "d:\\target.png";
//新生成的图片
if (generateBase64StringToFile(sourceImage, destImagePath)) {
System.out.println("生成成功！");
} else {
System.out.println("生成失败！");
}
}
}
