public static void imgChangeBase64(String fromPath, String toPath) { try { Base64.Encoder en = Base64.getEncoder(); FileInputStream fi = new FileInputStream(fromPath); FileWriter fw = new FileWriter(toPath); int available = fi.available(); byte[] bytes = new byte[available]; fi.read(bytes); String base64str = en.encodeToString(bytes); fw.write(base64str); fw.flush(); fw.close(); fi.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }
填入文件路径,调用即可。
toPath路径文件内得到的编码,
<img src="data:image/jpg;base64,编码粘贴此处(什么格式都不加)" />
<img src="data:image/png;base64,编码粘贴此处(什么格式都不加)" />
即可显示。