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<template>
<div class="app-upload-file-info">
<a class="app-upload-file-info__item" v-for="file in files" @click="() => onDownload(file)"><i class="el-icon-document"></i>{{file.name}}</a>
</div>
</template>
<script lang="ts">
import { Component, Vue, Prop, Watch } from 'vue-property-decorator';
import { AppServiceBase, Http } from 'ibiz-core';
@Component({
})
export default class AppUploadFileInfo extends Vue {
/**
* 初始化值
*
* @type {*}
* @memberof AppUploadFileInfo
*/
@Prop() public value?: any;
/**
* 数据值变化
*
* @param {*} newval
* @param {*} val
* @memberof AppUploadFileInfo
*/
@Watch('value')
onValueChange(newval: any, val: any) {
this.dataProcess();
}
/**
* 所属表单项名称
*
* @type {string}
* @memberof AppUploadFileInfo
*/
@Prop() public name!: string;
/**
* 上传文件路径
*
* @memberof AppUploadFileInfo
*/
public uploadUrl = AppServiceBase.getInstance().getAppEnvironment().BaseUrl + AppServiceBase.getInstance().getAppEnvironment().UploadFile;
/**
* 下载文件路径
*
* @memberof AppUploadFileInfo
*/
public downloadUrl = AppServiceBase.getInstance().getAppEnvironment().BaseUrl + AppServiceBase.getInstance().getAppEnvironment().ExportFile;
/**
* 文件列表
*
* @memberof AppUploadFileInfo
*/
public files = [];
/**
* 数据处理
*
* @private
* @memberof AppUploadFileInfo
*/
private dataProcess(): void {
if(this.value){
let files = JSON.parse(this.value);
if(files.length){
files.forEach((file: any) => {
let url = `${this.downloadUrl}/${file.id}`;
file.url = url;
});
}else{
files = []
}
this.files =files;
}
}
/**
* vue 生命周期
*
* @memberof AppUploadFileInfo
*/
public created() {
this.dataProcess();
}
/**
* 下载文件
*
* @param {*} file
* @memberof AppUploadFileInfo
*/
public onDownload(file: any) {
const url = `${this.downloadUrl}/${file.id}`;
this.DownloadFile(url,file);
}
/**
* 下载文件
*
* @param item 下载文件
* @memberof DiskFileUpload
*/
public DownloadFile(url: string,file: any) {
// 发送get请求
Http.getHttp()({
method: 'get',
url: url,
responseType: 'blob'
}).then((response: any) => {
if (!response || response.status != 200) {
this.$throw(this.$t('components.appfileupload.downloaderror'));
return;
}
// 请求成功，后台返回的是一个文件流
if (response.data) {
// 获取文件名
const filename = file.name;
const ext = '.' + filename.split('.').pop();
let filetype = this.calcFilemime(ext);
// 用blob对象获取文件流
let blob = new Blob([response.data], {type: filetype});
// 通过文件流创建下载链接
var href = URL.createObjectURL(blob);
// 创建一个a元素并设置相关属性
let a = document.createElement('a');
a.href = href;
a.download = filename;
// 添加a元素到当前网页
document.body.appendChild(a);
// 触发a元素的点击事件，实现下载
a.click();
// 从当前网页移除a元素
document.body.removeChild(a);
// 释放blob对象
URL.revokeObjectURL(href);
} else {
this.$throw(this.$t('components.appfileupload.downloaderror'));
}
}).catch((error: any) => {
console.error(error);
});
}
/**
* 计算文件mime类型
*
* @param filetype 文件后缀
* @memberof DiskFileUpload
*/
public calcFilemime(filetype: string): string {
let mime = "image/png";
switch(filetype) {
case ".wps":
mime = "application/kswps";
break;
case ".doc":
mime = "application/msword";
break;
case ".docx":
mime = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
break;
case ".txt":
mime = "text/plain";
break;
case ".zip":
mime = "application/zip";
break;
case ".png":
mime = "imgage/png";
break;
case ".gif":
mime = "image/gif";
break;
case ".jpeg":
mime = "image/jpeg";
break;
case ".jpg":
mime = "image/jpeg";
break;
case ".rtf":
mime = "application/rtf";
break;
case ".avi":
mime = "video/x-msvideo";
break;
case ".gz":
mime = "application/x-gzip";
break;
case ".tar":
mime = "application/x-tar";
break;
}
return mime;
}
}
</script>