技術標籤：javajava

檔案轉Base64字串及Base64字串轉檔案

    import org.apache.commons.codec.binary.Base64;
    /**    
     * @Description: 檔案轉為base64字串。filePath：檔案路徑
     * @Param: [filePath]
     * @return: java.lang.String
     * @Date: 2020/12/14
     */
    public static String fileToBase64(String filePath) throws IOException {
        File file = new File(filePath);
        FileInputStream inputFile = new FileInputStream(file);
        byte[] buffer = new byte[(int) file.length()];
        inputFile.read(buffer);
        inputFile.close();
        byte[] bs = Base64.encodeBase64(buffer);
        return new String(bs);
    }
 

/**
     * @Description: base64轉檔案.
     * @Param: [strBase64 檔案base64字串, outFile 輸入檔案路徑]
     * @return: boolean
     * @Date: 2020/12/14
     */
    public static boolean base64ToFile(String strBase64, File outFile) {
        try {
            // 解碼，然後將位元組轉換為檔案 // 將字串轉換為byte陣列
            byte[] bytes = java.util.Base64.getDecoder().decode(strBase64);
            return copyByte2File(bytes, outFile);
        } catch (Exception ioe) {
            ioe.printStackTrace();
            return false;
        }
    }