package com.byttersoft.hibernate.erp.cd_jianguoqc.testClient.test;
/**
* @author xuhw
* @Title
* @Description
* @date 2021/12/20 16:17
*/
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import org.apache.commons.codec.binary.Base64;
/**
* file <<>> Base64String
* 将file文件转换为Base64<br>
* 将base64编码字符串解码成file
* @author
*
*/
public class File2Base64Util {
public static void main(String[] args) {
String imgFile = "d:\\1.png";//待处理的图片
String imgbese=getFileBase64StrByLocalFile(imgFile);
System.out.println(imgbese.length());
System.out.println(imgbese);
String imgFilePath = "d:\\332.png";//新生成的图片
generateBase64StringToFile(imgbese,imgFilePath);
}
/**
* 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
* @return
*/
public static String getFileBase64StrByLocalFile(String localFilePath){
InputStream in = null;
byte[] data = null;
//读取图片字节数组
try
{
in = new FileInputStream(localFilePath);
data = new byte[in.available()];
in.read(data);
in.close();
}
catch (IOException e)
{
e.printStackTrace();
}
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
* @return
*/
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 {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
byte[] content = out.toByteArray();
return new String(Base64.encodeBase64(content));
}
/**
* 对字节数组字符串进行Base64解码并生成图片
// * @param imgStr 图片数据
// * @param imgFilePath 保存图片全路径地址
* @return
*/
public static boolean generateBase64StringToFile(String fileStr,String fileFilePath){
if (fileStr == null) //图像数据为空
return false;
try
{
//Base64解码
byte[] b = Base64.decodeBase64(fileStr);
for(int i=0;i<b.length;++i)
{
if(b[i]<0)
{//调整异常数据
b[i]+=256;
}
}
//生成jpeg图片
OutputStream out = new FileOutputStream(fileFilePath);
out.write(b);
out.flush();
out.close();
return true;
}
catch (Exception e)
{
return false;
}
}
}