废话不多说，直接上步骤。。。
一、首先建好一个mpvue模板（具体看mpvue文档）
二、引进iview weapp的组件库
（下载weapp链接：https://github.com/TalkingData/iview-weapp）
1、下载完了以后就得到了一个压缩包
2、解压后打开这个文件，看到一个dist文件夹
3、把dist文件夹内东西全部copy到你项目中的static的文件下的iview文件夹
（这里我新建个iview的子文件）
三、具体页面的main.json配置
{
"navigationBarTitleText": "首页",
"navigationBarBackgroundColor": "#000",
"usingComponents": {
"i-card": "../../../static/iview/card/index",
"i-steps": "../../../static/iview/steps/index",
"i-step": "../../../static/iview/step/index",
"i-button": "../../../static/iview/button/index",
"i-divider": "../../../static/iview/divider/index",
"i-panel": "../../../static/iview/panel/index",
"i-toast": "../../../static/iview/toast/index",
"i-message": "../../../static/iview/message/index",
"i-icon": "../../../static/iview/icon/index",
"i-cell-group": "../../../static/iview/cell-group/index",
"i-cell": "../../../static/iview/cell/index",
"i-grid": "../../../static/iview/grid/index",
"i-grid-item": "../../../static/iview/grid-item/index",
"i-grid-icon": "../../../static/iview/grid-icon/index",
"i-grid-label": "../../../static/iview/grid-label/index",
"i-row": "../../../static/iview/row/index",
"i-col": "../../../static/iview/col/index",
"i-tag": "../../../static/iview/tag/index",
"ec-canvas": "../../../static/ec-canvas/ec-canvas"
}
}
四、 在具体需要用到的页面就可以用iview weapp提供的标签组件了
<div class="followRecords">
<i-button @click="handleClick">默认按钮</i-button>
<i-button @click="handleClick" type="error" long="true">联通两边按钮</i-button>
<i-button @click="handleClick" type="primary">Primary</i-button>
<i-button @click="handleClick" type="ghost">Ghost</i-button>
<i-button @click="handleClick" type="info">Info</i-button>
<i-button @click="handleClick" type="success">Success</i-button>
<i-button @click="handleClick" type="warning">Warning</i-button>
<i-button @click="handleClick" type="error">Error</i-button>
</div>
五、重新执行npm run dev命令，然后就可以看到iview组件已生效。