elementUI vue upload完整示例

Posted 2021-02-12 yysbolg

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elementUI 和vue 还有axios +java的完整示例, 代码敲了很久, 累死了, 以后用就直接复制了 ,很值吧!!!

1.html

<!DOCTYPE html>
<html >
<head>
    <meta charset="UTF-8">
    <title>导入</title>
    <link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
</head>
<body>
<div id="myUpload">
<el-button type="primary" size="mini" @click="uploadFile">导入</el-button>
<!--上传-->
<el-dialog title="上传" width="40%" :visible.sync="uploadTemplateDialog">
    <el-row>
        <el-col :span="22">
            <el-upload class="upload-demo"
                       ref="upload"
                       action=""
                       :accept="acceptFileType"
                       :limit="1"
                       :on-exceed="handleExceed"
                       :before-upload="beforeUpload"
                       :on-preview="handlePreview"
                       :on-remove="handleRemove"
                       :file-list="fileList"
                       :auto-upload="false">
                <el-button slot="trigger" size="small" type="primary">选取Excel格式文件</el-button>
                <div slot="tip" class="el-upload_tip">只能上传.xls文件,且不超过1M</div>
            </el-upload>

        </el-col>
    </el-row>
    <span slot="footer" class="dialog-footer">
        <el-button @click="submitUpload" type="primary" size="mini" :loading="uploadLoading" > 确定上传</el-button>
        <el-button @click="uploadTemplateDialog=false" size="mini">取消</el-button>
    </span>

</el-dialog>



</div>


<script src="https://cdn.jsdelivr.net/npm/vue"></script>
<script src="https://unpkg.com/[email protected]/lib/index.js"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script >
    new Vue({
        el:‘#myUpload‘,
        data:function(){
            return{
                uploadTemplateDialog:false,
                fileList:[],
                uploadLoading:false,
                acceptFileType:‘.xls‘,
                downLoadLoading:‘‘,
            }
        },
        //钩子函数,页面加载执行
        created:function(){

        },
        //钩子函数,页面加载完成后执行
        mounted(){

        },
        //函数方法
        methods:{
            uploadFile(){
                this.uploadLoading=false;
                var that=this;
                this.fileList=[];
                this.uploadTemplateDialog=true;
                setTimeout(function(){
                    that.$refs.upload.clearFiles();
                },100);
            },
            handleExceed(files,fileList){
                this.$message.warning(‘只能选择1个文件!‘);
            },
            submitUpload(){
                this.uploadLoading=true;
                var that=this;
                setTimeout(function () {
                    if(that.$refs.upload.$children[0].fileList.length==1){
                        that.$refs.upload.submit();
                    }else{
                        that.uploadLoading=false;
                        that.$message({
                            type:‘error‘,
                            showClose:true,
                            duration:3000,
                            message:‘请选择文件!‘
                        });
                    };
                },100);
            },
            handleRemove(file,fileList){
                //console.log(file,fileList);
            },
            handlePreview(file){
                //console.log(file);
            },
            beforeUpload(file){
                var that=this;
                //文件类型
                var fileName=file.name.substring(file.name.lastIndexOf(‘.‘)+1);
                if(fileName!=‘xls‘){
                    that.uploadTemplateDialog=false;
                    that.$message({
                        type:‘error‘,
                        showClose:true,
                        duration:3000,
                        message:‘文件类型不是.xls文件!‘
                    });
                    return false;
                }
                //读取文件大小
                var fileSize=file.size;
                console.log(fileSize);
                if(fileSize>1048576){
                    that.uploadTemplateDialog=false;
                    that.$message({
                        type:‘error‘,
                        showClose:true,
                        duration:3000,
                        message:‘文件大于1M!‘
                    });
                    return false;
                }
                that.downloadLoading=that.$loading({
                    lock:true,
                    text:‘数据导入中...‘,
                    spinner:‘el-icon-loading‘,
                    background:‘rgba(0,0,0,0.7)‘
                });
                let fd=new FormData();
                fd.append(‘file‘,file);
                fd.append(‘_t1‘,new Date());
                axios({
                    method:‘post‘,
                    url:‘/upload/‘+new Date().getTime(),
                    data:fd,
                    headers:{"Content-Type":"multipart/form-data;boundary="+new Date().getTime()}
                }).then(rsp=>{
                    that.downloadLoading.close();
                    that.uploadLoading=false;
                    let resp=rsp.data
                    if(resp.resultCode==200){
                        that.uploadTemplateDialog=false;
                        that.$message.success(resp.resultMsg);
                        //that.queryData();//更新数据
                    }else{
                        that.uploadTemplateDialog=false;
                        that.$message({
                            type:‘error‘,
                            showClose:true,
                            duration:60000,
                            message:resp.resultMsg
                        });
                    }
                }).catch(error=> {
                    that.downloadLoading.close();
                    that.uploadLoading=false;
                    that.uploadTemplateDialog=false;
                    that.$message({
                        type:‘error‘,
                        showClose:true,
                        duration:60000,
                        message:‘请求失败! error:‘+error
                    });
                })
                return false;
            }
        }
    })
</script>
</body>
</html>

2.java

@RequestMapping(value="/upload/{time}",method={RequestMethod.POST})
@ResponseBody
public HttpResult upload(@PathVariable("time") String time,@RequestParam("file") MultipartFile file,HttpServlet request){
        String fileName=file.getOriginalFilename();
        String prefix=fileName.substring(filename.lastIndexOf(".")+1); // 后缀: "xls"
        String path=request.getServletContext().getRealPath(File.separator+"myFile");
        String date=String.valueOf(new Date().getTime());
        if(!new File(path).exists()){
            new File(path).mkdir();
        }
        File file2=new File(path+File.separator+date+"_"+fileName);
        file.transferTo(files);
        return HttpResult.ok();
}