//##########################################################//
String uploadDir = com.bstek.dorado.core.Configure.getString(
Constants.file_upload_config_path);
String filePath = uploadDir + "/" + emp.getPhoto();
//判断文件是否存在
File file = new File(filePath);
if(!file.exists()){
System.out.println("文件不存在," + filePath);
return "文件不存在" + filePath;
}
//读文件
BufferedInputStream bufferedInput = null;
byte[] buffer = new byte[1024*1024];
int bytesReadTotal = 0;
try {
//创建BufferedInputStream 对象
bufferedInput = new BufferedInputStream(new FileInputStream(filePath));
int bytesRead = 0;
//从文件中按字节读取内容,到文件尾部时read方法将返回-1
while ((bytesRead = bufferedInput.read(buffer)) != -1) {
bytesReadTotal += bytesRead;
}
} catch (Exception ex) {
ex.printStackTrace();
} finally {
//关闭 BufferedInputStream
try {
if (bufferedInput != null){
bufferedInput.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
//System.out.println("读文件成功,Size:" + bytesReadTotal);
//数组复制(BASE64编码 不能自动控制长度)
byte[] buffer2 = new byte[bytesReadTotal];
System.arraycopy(buffer, 0, buffer2, 0, bytesReadTotal);
//编码
BASE64Encoder base64En = new BASE64Encoder();
String fileStr = base64En.encode(buffer2);
//System.out.println("编码成功,Size:" + fileStr.length());
//##########################################################//
Java图片Base64编码
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转载自blog.csdn.net/tanzongbiao/article/details/82528689
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