Vue实现文件分片上传代码怎么写
时间: 2024-01-07 15:03:04 浏览: 26
以下是一个简单的 Vue 文件分片上传的代码示例:
```
<template>
<div>
<el-upload
class="upload-demo"
action="/upload"
:before-upload="beforeUpload"
:on-progress="onProgress"
:on-success="onSuccess"
:on-error="onError"
:headers="headers"
:data="{chunkIndex: chunkIndex, chunkTotal: chunkTotal, fileName: fileName}"
>
<el-button size="small" type="primary">选择文件</el-button>
</el-upload>
</div>
</template>
<script>
import axios from 'axios'
import { Message } from 'element-ui'
export default {
data() {
return {
file: null,
fileName: '',
chunkSize: 2 * 1024 * 1024, // 每个分片的大小
chunkIndex: 0, // 当前上传的分片索引
chunkTotal: 0, // 分片总数
progress: 0, // 上传进度
headers: {
'Content-Type': 'application/octet-stream' // 指定文件类型为二进制流
}
}
},
methods: {
// 选择文件
beforeUpload(file) {
this.file = file
this.fileName = file.name
this.chunkTotal = Math.ceil(file.size / this.chunkSize)
},
// 上传进度
onProgress(event) {
this.progress = Math.round((100 * event.loaded) / event.total)
},
// 上传成功
onSuccess(response) {
if (this.chunkIndex === this.chunkTotal - 1) {
// 如果上传的是最后一个分片,表示文件上传成功
Message.success('文件上传成功')
} else {
// 否则继续上传下一个分片
this.chunkIndex++
this.uploadChunk()
}
},
// 上传失败
onError(error) {
Message.error('文件上传失败')
},
// 上传分片
uploadChunk() {
const start = this.chunkIndex * this.chunkSize
const end = Math.min((this.chunkIndex + 1) * this.chunkSize, this.file.size)
const chunk = this.file.slice(start, end)
const formData = new FormData()
formData.append('file', chunk)
axios.post('/upload', formData, {
headers: {
'Content-Type': 'multipart/form-data'
},
params: {
chunkIndex: this.chunkIndex,
chunkTotal: this.chunkTotal,
fileName: this.fileName
}
})
.catch(() => {
Message.error('文件上传失败')
})
}
}
}
</script>
```
需要注意的是,上述代码仅为示例,具体实现需根据实际需求进行调整。