wx.compressImage重复压缩图片至指定大小，压一次后就没办法继续压 [图片] compressImage(src, limit) {         return new Promise((resolve, reject) => {             wx.compressImage({                 src: src,                 quality:70,                 success: (res) => {                     console.log('compress', res)                     wx.getFileSystemManager().getFileInfo({                         filePath: res.tempFilePath,                         success: (img) => {                             if(img.size<limit*1024){                                 console.log('img1',img)                                 return resolve({done:true, value:res})                             }else{                                 console.log('img2',img)                                 return resolve({done:false, value:res})                             }                         },                         fail: (img) => {                             console.log('img', img)                             reject(img)                         }                     })                 },                 fail: (res) => {                     console.log('error')                     reject(res)                 }             })         }).then((res) => {             if (res.done) {                 console.log('img1', res)                 return  Promise.resolve(res)             } else {                 console.log('img2', res)                     return this.compressImage(res.value.tempFilePath, limit)                              }         }).catch((err) => {             return Promise.reject(err)         })     },