图片base64转为File,并且存在指定本地路径

本文链接：https://blog.youkuaiyun.com/weixin_39507514/article/details/90770850

本文档详细介绍了如何将Base64编码的图像转换为File对象，并将其存储到指定的本地文件路径中，这对于处理网络传输的图像数据并在本地系统上进行操作至关重要。

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package com.yuantu.util;
import org.apache.commons.io.FileUtils;
import org.junit.Test;
import org.springframework.util.Base64Utils;

import java.io.File;


/**
 * @author Administrator
 * @Title: ImageBase64Upload
 * @ProjectName ytmonitor
 * @Description: TODO
 * @date 2019/6/411:53
 */

public class ImageBase64Upload {
    /**
      * @Description: 文件上传
      * @param  // 接收base64值（请求参数）；
      * @return
      * @MethodName
      * @Author chenglong
      * @date 2019/6/4 11:56
    　*/
    public Result ImageBase64UploadFile(String base64Data){
        String tempFileName="";
        try {
            String dataPrix = "";
            String data = "";
            if(base64Data == null || "".equals(base64Data)){
                throw new Exception("上传失败，上传图片数据为空");
            }else{
                String [] d = base64Data.split("base64,");
                if(d != null && d.length == 2){
                    dataPrix = d[0];
                    data = d[1];
                }else{
                    throw new Exception("上传失败，数据不合法");
                }
            }
            String suffix = "";
            if("data:image/jpeg;".equalsIgnoreCase(dataPrix)){//data:image/jpeg;base64,base64编码的jpeg图片数据
                suffix = ".jpg";
            } else if("data:image/x-icon;".equalsIgnoreCase(dataPrix)){//data:image/x-icon;base64,base64编码的icon图片数据
                suffix = ".ico";
            } else if("data:image/gif;".equalsIgnoreCase(dataPrix)){//data:image/gif;base64,base64编码的gif图片数据
                suffix = ".gif";
            } else if("data:image/png;".equalsIgnoreCase(dataPrix)){//data:image/png;base64,base64编码的png图片数据
                suffix = ".png";
            }else{
                throw new Exception("上传图片格式不合法");
            }
            tempFileName = RandomUtil.generateNumString(6) + suffix;
            //因为BASE64Decoder的jar问题，此处使用spring框架提供的工具包
            byte[] bs = Base64Utils.decodeFromString(data);
            try{
                //使用apache提供的工具类操作流
                FileUtils.writeByteArrayToFile(new File("D://image", tempFileName), bs);
            }catch(Exception ee){
                throw new Exception("上传失败，写入文件失败，"+ee.getMessage());
            }
            return Result.createSuccessResult(tempFileName+"文件上传成功！");
        } catch (Exception ex) {
            return Result.createFailResult(tempFileName+"文件上传失败，原因:"+ex.getMessage());
        }
    }
    @Test
    public void testUpload(){
        String images="data:image/jpeg;base64,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