package com.ruoyi.utils;
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import com.ruoyi.common.config.RuoYiConfig;
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import com.ruoyi.common.constant.Constants;
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import com.ruoyi.common.utils.DateUtils;
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import com.ruoyi.common.utils.StringUtils;
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import com.ruoyi.common.utils.file.FileUploadUtils;
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import com.ruoyi.common.utils.uuid.Seq;
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import org.apache.commons.codec.binary.Base64;
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import org.apache.commons.io.FilenameUtils;
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import javax.xml.bind.DatatypeConverter;
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import java.io.*;
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import java.net.URL;
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public class Base64Util {
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/**
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* @Description: 文件转为base64字符串。filePath：文件路径
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* @Param: [filePath]
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* @return: java.lang.String
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* @Date: 2020/12/25
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*/
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public static String fileToBase64(String filePath) throws IOException {
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File file = new File(filePath);
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FileInputStream inputFile = null;
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byte[] buffer = null;
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try {
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inputFile = new FileInputStream(file);
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buffer = new byte[(int) file.length()];
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inputFile.read(buffer);
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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if (null != inputFile) {
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inputFile.close();
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}
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}
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byte[] bs = Base64.encodeBase64(buffer);
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return new String(bs);
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}
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/**
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* base64字符串转文件
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* @param base64Str
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* @param targetFilePath
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* @return
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*/
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public static void base64ToFile(String base64Str, String targetFilePath) {
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byte[] buffer = Base64.decodeBase64(base64Str);
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FileOutputStream out = null;
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try {
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out = new FileOutputStream(targetFilePath);
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out.write(buffer);
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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} finally {
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if (null != out) {
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try {
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out.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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}
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/**
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* 将图片转化为base64
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* @param src
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* @return
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* @throws Exception
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*/
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public static String imgToBase64(String src) throws Exception {
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URL url = new URL(src);
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InputStream in = null;
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byte[] data = null;
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try {
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in = url.openStream();//远程文件
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data = new byte[in.available()];
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in.read(data);
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in.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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Base64 encoder = new Base64();
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return encoder.encodeToString(data);
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}
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/**
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* Base64转换为图片服务
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* targetPath 输出视频文件路径,不需要文件名
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* */
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public static void base64ToImg(String base64,String targetPath){
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File file = null;
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FileOutputStream fops = null;
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base64 = base64.replace("data:image/jpeg;base64,","");
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byte[] buff = DatatypeConverter.parseBase64Binary(base64);
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try {
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fops = new FileOutputStream(new File(targetPath));
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fops.write(buff);
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} catch (IOException e) {
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e.printStackTrace();
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}
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System.out.println("--------------------------------"+"图片转换完成"+"--------------------------------");
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}
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/**
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* Base64转换为图片存在服务器中
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* */
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public static String base64ToJpg(String base64,String name){
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//文件路径与存储路径
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String fileName = StringUtils.format("{}/{}_{}.jpg", DateUtils.datePath(), name, Seq.getId(Seq.uploadSeqType));
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String filePath = RuoYiConfig.getUploadPath() + "/" + fileName;
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int dirLastIndex = RuoYiConfig.getProfile().length() + 1;
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String currentDir = StringUtils.substring(RuoYiConfig.getUploadPath(), dirLastIndex);
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String url = Constants.RESOURCE_PREFIX + "/" + currentDir + "/" + fileName;
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// 参数avatar接收base64字符串
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// 1.截取掉base64开头的data:image/png;base64,
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base64 = base64.replace("data:image/jpeg;base64,","");
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// 2.base64转换为bytes类型
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byte[] buff = DatatypeConverter.parseBase64Binary(base64);
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// 3.创建一张图片，将bytes类型的数据写入图片中
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FileOutputStream fops = null;
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try {
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File desc = new File(filePath);
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if (!desc.exists()) {
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if (!desc.getParentFile().exists()) {
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desc.getParentFile().mkdirs();
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}
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}
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fops = new FileOutputStream(desc);
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fops.write(buff);
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} catch (IOException e) {
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e.printStackTrace();
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}
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return url;
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}
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}
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