vue项目base64字符串转图片的实现代码

data() {

  return {
    param:{ 
       id:"",
         customerHead: "",
    }
  }
}

let _this = this
let files = e.target.files[0]
if (files.size/(1024*1024) > 2) {
this.open('上传的图片不可大于2M！')
return false;
}
var reader = new FileReader();
reader.onload = function (e) {
var base64 = e.target.result;
_this.param.customerHead = base64
//console.log(base64)
}
if(files) {
reader.readAsDataURL(files);
}

@Value("${upload.image.path}")
private String filePath;
//base64字符串转化成图片 headerImgPath:http://+ip+:端口号 
  public String generateImage(String imgStr,String headerImgPath,String cusID)
  { //对字节数组字符串进行Base64解码并生成图片
    if (imgStr == null) //图像数据为空
      return "../picclife/static/custom.png";
    BASE64Decoder decoder = new BASE64Decoder();
    try
    {
      //判断是base64字符串还是图片路径
      if(imgStr.substring(0,5).equals("data:")){
        //Base64解码
        byte[] b = decoder.decodeBuffer(imgStr.substring(imgStr.indexOf(",") + 1));
        for(int i=0;i