java工具类2-获取文件base64

import java.io.File;

import org.apache.commons.io.FileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.alibaba.druid.util.Base64;

public class FilesUtils {
    private static final Logger LOG = LoggerFactory.getLogger(FilesUtils.class);

    /**
     * 根据文件绝对地址返回该文件的base64编码
     * 
     * @param aFilePath 文件绝对路径
     * @return
     */
    public static String getBase64str(String aFilePath) {
        String re = null;
        try {
            File file = new File(aFilePath);
            if (file.exists()) {
                re = Base64.byteArrayToBase64(FileUtils.readFileToByteArray(file));
            }
        } catch (Exception e) {
            LOG.error("read file to byte error", e);
        }
        return re;
    }