javascript
复制代码
//上传图片组件 定义文件imageUpload
<template>
<div class="component-upload-image">
<el-upload multiple :action="uploadImgUrl" list-type="picture-card" :on-success="handleUploadSuccess"
:before-upload="handleBeforeUpload" :limit="limit" :on-error="handleUploadError" :on-exceed="handleExceed"
ref="imageUpload" :on-remove="handleDelete" :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";
//接口api
import { serviceApi} from "@/utils/serviceApi";
export default {
props: {
value: [String, Object, Array],
// 图片数量限制
limit: {
type: Number,
default: 6,
},
// 大小限制(MB)
fileSize: {
type: Number,
default: 5,
},
// 文件类型, 例如['png', 'jpg', 'jpeg']
fileType: {
type: Array,
default: () => ["png", "jpg", "jpeg"],
},
// 是否显示提示
isShowTip: {
type: Boolean,
default: true
}
},
data () {
return {
number: 0,
uploadList: [],
dialogImageUrl: "",
dialogVisible: false,
hideUpload: false,
baseUrl: serviceApi(),
uploadImgUrl: serviceApi() + "/PicturesUpload", // 上传的图片服务器地址
headers: {
Authorization: "Bearer " + getToken(),
},
fileList: []
};
},
watch: {
value: {
handler (val) {
if (val) {
// 首先将值转为数组
const list = Array.isArray(val) ? val : this.value.split(',');
// 然后将数组转为对象数组
this.fileList = list.map(item => {
if (typeof item === "string") {
if (item.indexOf(this.baseUrl) === -1) {
item = { name: this.baseUrl + item, url: this.baseUrl + item };
} else {
item = { name: item, url: item };
}
}
return item;
});
} else {
this.fileList = [];
return [];
}
},
deep: true,
immediate: true
}
},
computed: {
// 是否显示提示
showTip () {
return this.isShowTip && (this.fileType || this.fileSize);
},
},
methods: {
// 上传前loading加载
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.$modal.msgError(`文件格式不正确, 请上传${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.$modal.msgError(`上传头像图片大小不能超过 ${this.fileSize} MB!`);
return false;
}
}
this.$modal.loading("正在上传图片，请稍候...");
this.number++;
},
// 文件个数超出
handleExceed () {
this.$modal.msgError(`上传文件数量不能超过 ${this.limit} 个!`);
},
// 上传成功回调
handleUploadSuccess (res, file) {
console.log(res, 'res');
if (res.code === 200) {
this.uploadList.push({ name: res.fileName, url: res.imgUrl });
this.uploadedSuccessfully();
} else {
this.number--;
this.$modal.closeLoading();
this.$modal.msgError(res.msg);
this.$refs.imageUpload.handleRemove(file);
this.uploadedSuccessfully();
}
},
// 删除图片
handleDelete (file) {
const findex = this.fileList.map(f => f.name).indexOf(file.name);
if (findex > -1) {
this.fileList.splice(findex, 1);
this.$emit("input", this.listToString(this.fileList));
}
},
// 上传失败
handleUploadError () {
this.$modal.msgError("上传图片失败，请重试");
this.$modal.closeLoading();
},
// 上传结束处理
uploadedSuccessfully () {
if (this.number > 0 && this.uploadList.length === this.number) {
this.fileList = this.fileList.concat(this.uploadList);
this.uploadList = [];
this.number = 0;
this.$emit("input", this.listToString(this.fileList));
this.$modal.closeLoading();
}
},
// 预览
handlePictureCardPreview (file) {
this.dialogImageUrl = file.url;
this.dialogVisible = true;
},
// 对象转成指定字符串分隔
listToString (list, separator) {
let strs = "";
separator = separator || ",";
for (let i in list) {
if (list[i].url) {
strs += list[i].url.replace(this.baseUrl, "") + separator;
}
}
return strs != '' ? strs.substr(0, strs.length - 1) : '';
}
}
};
</script>
<style scoped lang="scss">
// .el-upload--picture-card 控制加号部分
::v-deep.hide .el-upload--picture-card {
display: none;
}
// 去掉动画效果
::v-deep .el-list-enter-active,
::v-deep .el-list-leave-active {
transition: all 0s;
}
::v-deep .el-list-enter,
.el-list-leave-active {
opacity: 0;
transform: translateY(0);
}
</style>
javascript
复制代码
//详情展示图片组件 定义文件 ImagePreview
<template>
<div>
<el-image v-for="(item, index) in realSrc" :key="index" :src="`${baseUrl}` + item" fit="cover"
:style="`width:${realWidth};height:${realHeight};`" :preview-src-list="realSrcList">
<div slot="error" class="image-slot">
<i class="el-icon-picture-outline"></i>
</div>
</el-image>
</div>
</template>
<script>
import { isExternal } from "@/utils/validate";
import { serviceApi} from "@/utils/serviceApi";
export default {
name: "ImagePreview",
data () {
return {
baseUrl: serviceApi(),
}
},
props: {
src: {
type: String,
default: ""
},
width: {
type: [Number, String],
default: ""
},
height: {
type: [Number, String],
default: ""
}
},
computed: {
realSrc () {
if (!this.src) {
return;
}
let real_src = this.src.split(",");
if (isExternal(real_src)) {
return real_src;
}
return real_src;
},
realSrcList () {
if (!this.src) {
return;
}
let real_src_list = this.src.split(",");
let srcList = [];
real_src_list.forEach(item => {
if (isExternal(item)) {
return srcList.push(item);
}
return srcList.push(this.baseUrl + item);
});
return srcList;
},
realWidth () {
return typeof this.width == "string" ? this.width : `${this.width}px`;
},
realHeight () {
return typeof this.height == "string" ? this.height : `${this.height}px`;
}
},
};
</script>
<style lang="scss" scoped>
.el-image {
border-radius: 5px;
background-color: #ebeef5;
box-shadow: 0 0 5px 1px #ccc;
margin-left: 15px;
margin-top: 6px;
::v-deep .el-image__inner {
transition: all 0.3s;
cursor: pointer;
&:hover {
transform: scale(1.2);
}
}
::v-deep .image-slot {
display: flex;
justify-content: center;
align-items: center;
width: 100%;
height: 100%;
color: #909399;
font-size: 30px;
}
}
</style>