node.js - gm convert unable to open file ...[NO such file or directory]

Question

Use gm to read the image, the path is correct,
Error report: gm convert unable to open file ...[NO such file or directory]

router.js

//path.join(__dirname,'../avatar/',filename)等价于
==c:\users\MrsH\Desktop\codeth\shuoshuo\router\avatar\uestcw.jpg
所以路径是没有问题，图片存在可以无法读取并修改

 gm(path.join(__dirname, '../avatar/', filename))
        .crop(w,h,x,y)
        .resize(100,100,"!")
        .write(path.join(__dirname, './avatar/', filename),function(err){
          if(err){
            console.log(err)
              res.send("-1");
              return;
          }
          res.send("1");
    });

The following is the document tree

Answer 1

//写成这样没错
gm(path.join(__dirname,'../models','pic08.jpg'))
    .crop(100,100,100,100)
    .resize(50,50,'!')
    .write('./a.jpg', (err)=>{
        if(err) console.log(err);
        console.log('finished');
    })
//当我把write的路径改为以下时，报错
path.join(__dirname,'./models','pic08.jpg')
//改成这样是对的
path.join(__dirname,'models','pic08.jpg')

So when path.join is used in the future, it means that files in the current directory should not be added ./