由于最近都在做一个设备管理的模块,需要我上传设备图片,于是,就动手做了一个上传图片的组件,也不多说,直接上代码
<template>
<div class="component-upload-image">
<el-upload
:action="uploadImgUrl"
list-type="picture-card"
:on-success="handleUploadSuccess"
:before-upload="handleBeforeUpload"
:limit="limit"
:on-error="handleUploadError"
:on-exceed="handleExceed"
name="file"
:on-remove="handleRemove"
:show-file-list="true"
:headers="headers"
:file-list="fileList"
:on-preview="handlePictureCardPreview"
:class="{hide: this.fileList.length >= this.limit}"
>
<i class="el-icon-plus"></i>
</el-upload>
<!-- 上传提示 -->
<div class="el-upload__tip" slot="tip" v-if="showTip">
请上传
<template v-if="fileSize"> 大小不超过 <b style="color: #f56c6c">{{ fileSize }}MB</b> </template>
<template v-if="fileType"> 格式为 <b style="color: #f56c6c">{{ fileType.join("/") }}</b> </template>
的文件
</div>
<el-dialog
:visible.sync="dialogVisible"
title="预览"
width="800"
append-to-body
>
<img
:src="dialogImageUrl"
style="display: block; max-width: 100%; margin: 0 auto"
/>
</el-dialog>
</div>
</template>
<script>
import { getToken } from "@/utils/auth";
export default {
props: {
value: [String, Object, Array],
limit: {
type: Number,
default: 5,
},
fileSize: {
type: Number,
default: 5,
},
fileType: {
type: Array,
default: () => ["png", "jpg", "jpeg"],
},
isShowTip: {
type: Boolean,
default: true
}
},
data() {
return {
dialogImageUrl: "",
dialogVisible: false,
hideUpload: false,
baseUrl: process.env.VUE_APP_BASE_API,
uploadImgUrl: process.env.VUE_APP_BASE_API + '你自己的地址',
headers: {
Authorization: "Bearer " + getToken(),
},
fileList: []
};
},
watch: {
value: {
handler(val) {
if (val) {
const list = Array.isArray(val) ? val : this.value.split(',');
this.fileList = list.map(item => {
if (typeof item === "string") {
item = { name: item, url: item };
}
return item;
});
} else {
this.fileList = [];
return [];
}
},
deep: true,
immediate: true
}
},
computed: {
showTip() {
return this.isShowTip && (this.fileType || this.fileSize);
},
},
methods: {
handleRemove(file, fileList) {
const findex = this.fileList.map(f => f.name).indexOf(file.name);
if(findex > -1) {
this.fileList.splice(findex, 1);
this.$emit("input", this.listToString(this.fileList));
}
},
handleUploadSuccess(res) {
if (res.code == 200) {
this.fileList.push({ name: res.data.fileName, url: res.data.url });
this.$emit("input", this.listToString(this.fileList));
this.loading.close();
} else {
this.$message.error(res.msg);
this.loading.close();
}
},
handleBeforeUpload(file) {
let isImg = false;
if (this.fileType.length) {
let fileExtension = "";
if (file.name.lastIndexOf(".") > -1) {
fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
}
isImg = this.fileType.some((type) => {
if (file.type.indexOf(type) > -1) return true;
if (fileExtension && fileExtension.indexOf(type) > -1) return true;
return false;
});
} else {
isImg = file.type.indexOf("image") > -1;
}
if (!isImg) {
this.$message.error(
`文件格式不正确, 请上传${this.fileType.join("/")}图片格式文件!`
);
return false;
}
if (this.fileSize) {
const isLt = file.size / 1024 / 1024 < this.fileSize;
if (!isLt) {
this.$message.error(`上传头像图片大小不能超过 ${this.fileSize} MB!`);
return false;
}
}
this.loading = this.$loading({
lock: true,
text: "上传中",
background: "rgba(0, 0, 0, 0.7)",
});
},
handleExceed() {
this.$message.error(`上传文件数量不能超过 ${this.limit} 个!`);
},
handleUploadError(res) {
this.$message({
type: "error",
message: "上传失败",
});
this.loading.close();
},
handlePictureCardPreview(file) {
this.dialogImageUrl = file.url;
this.dialogVisible = true;
},
listToString(list, separator) {
let strs = "";
separator = separator || ",";
for (let i in list) {
strs += list[i].url + separator;
}
return strs != '' ? strs.substr(0, strs.length - 1) : '';
}
}
};
</script>
<style scoped lang="scss">
::v-deep.hide .el-upload--picture-card {
display: none;
}
::v-deep .el-list-enter-active,
::v-deep .el-list-leave-active {
transition: all 0s;
}
::v-deep .el-list-enter, .el-list-leave-active {
opacity: 0;
transform: translateY(0);
}
</style>