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前言

这里来完成修改用户头像的功能。

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一、界面搭建

<script setup>

import { Plus, Upload } from '@element-plus/icons-vue'
import {ref} from 'vue'
import avatar from '@/assets/default.png'

const uploadRef = ref()

//用户头像地址
const imgUrl= avatar

</script>

<template>
    <el-card class="page-container">
        <template #header>
            <div class="header">
                <span>更换头像</span>
            </div>
        </template>
        <el-row>
            <el-col :span="12">
                <el-upload 
                    ref="uploadRef"
                    class="avatar-uploader" 
                    :show-file-list="false"
                    >
                    <img v-if="imgUrl" :src="imgUrl" class="avatar" />
                    <img v-else :src="avatar" width="278" />
                </el-upload>
                <br />
                <el-button type="primary" :icon="Plus" size="large"  @click="uploadRef.$el.querySelector('input').click()">
                    选择图片
                </el-button>
                <el-button type="success" :icon="Upload" size="large">
                    上传头像
                </el-button>
            </el-col>
        </el-row>
    </el-card>
</template>

<style lang="scss" scoped>
.avatar-uploader {
    :deep() {
        .avatar {
            width: 278px;
            height: 278px;
            display: block;
        }

        .el-upload {
            border: 1px dashed var(--el-border-color);
            border-radius: 6px;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            transition: var(--el-transition-duration-fast);
        }

        .el-upload:hover {
            border-color: var(--el-color-primary);
        }

        .el-icon.avatar-uploader-icon {
            font-size: 28px;
            color: #8c939d;
            width: 278px;
            height: 278px;
            text-align: center;
        }
    }
}
</style>

二、头像回显

import useUserInfoStore from '@/stores/userInfo.js'

const uploadRef = ref()

//用户头像地址
const userInfoStore = useUserInfoStore()
const imgUrl= userInfoStore.getUserInfo().userPic?ref(userInfoStore.getUserInfo().userPic):avatar

三、头像上传

1. 自动上传

1.1 表单

<el-upload class="avatar-uploader" :auto-upload="true" action="/api/file/upload/avatar" :name="file" :headers="token" :before-upload="updateBefore" :on-success="uploadSuccess"
    :show-file-list="false">
    <img v-if="imgUrl" :src="imgUrl" class="avatar" />
    <img v-else :src="avatar" width="278" />
</el-upload>

1.2 事件

import {useTokenStore} from '@/stores/token.js'

//头像上传
const token=ref('')
const updateBefore=()=>{
    const tokenStore=useTokenStore()
    if(tokenStore.getToken()){
        token.value={'Authorization':'Bearer '+tokenStore.getToken()}
    }
}
const uploadSuccess=(response)=>{
    imgUrl.value=response.data
}

2. 更新用户头像

2.1 调用接口

export const userAvatarService = (avatar)=>{
    var params = new URLSearchParams()
    params.append('avatar', avatar)
    return request.patch('/user/avatar', params)
}

2.2 界面代码

<el-row>
  <el-col :span="12">
      <el-upload class="avatar-uploader" :auto-upload="true" action="/api/file/upload/avatar" :name="file" :headers="token" :before-upload="updateBefore" :on-success="uploadSuccess"
          :show-file-list="false">
          <img v-if="imgUrl" :src="'/avatar/'+imgUrl" class="avatar" />
          <img v-else :src="avatar" width="278" />
      </el-upload>
      <br />
      <el-button type="primary" :icon="Plus" size="large"  @click="uploadRef.$el.querySelector('input').click()">
          选择图片
      </el-button>
      <el-button type="success" :icon="Upload" size="large" @click="updateAvatar">
          上传头像
      </el-button>
  </el-col>
</el-row>

2.3 事件代码

import { userAvatarService } from '@/api/user.js'
import { ElMessage } from 'element-plus'

//更新用户头像
const updateAvatar=async()=>{
    const result = await userAvatarService(imgUrl.value)
    const message = result.message
    if (result.code == 0) {
        ElMessage.success(message ? message : '上传成功!')
        userInfoStore.userInfo.userPic=imgUrl.value
    } else {
        ElMessage.error(message ? message : '上传失败,请稍后重试!')
    }
}

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总结

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