VueJs 不显示 SVG

Question

我正在使用 VueJs 创建一个单页应用程序，但我遇到了一个问题，即我的所有 SVG 都没有被渲染。我正在使用 webpack-simple CLI，我正在使用 SLDS（Salesforce 闪电设计系统）作为 CSS 框架，它为我提供了我所有的 svgs。

这是我的组件之一，它没有显示 SVG：

export default {
        props: ['tabData']
    }

<template>
    <li class="slds-context-bar__item slds-context-bar__item_tab" role="presentation">
        <a href="javascript:void(0);" class="slds-context-bar__label-action" role="tab" title="Tab Item 2"
           aria-selected="false" tabindex="-1" aria-controls="context-tab-panel-3" id="context-tab-id-3">
            <div class="slds-icon_container" :title="tabData.tabName">
                <svg class="slds-icon slds-icon_small slds-icon-text-default" aria-hidden="true">
                    <use xmlns:xlink="http://www.w3.org/1999/xlink"
                         xlink:href="../../assets/lightning/assets/icons/standard-sprite/svg/symbols.svg#case"/>
                </svg>
            </div>
            <span class="slds-truncate" :title="tabData.tabName">{{ tabData.tabName }}</span>
        </a>
        
        <div class="slds-context-bar__icon-action slds-context-bar__dropdown-trigger slds-dropdown-trigger slds-dropdown-trigger_click slds-p-left_none slds-p-right_none">
            <button class="slds-button slds-button_icon slds-button_icon-container slds-button_icon-x-small"
                    aria-haspopup="true"
                    tabindex="-1">
                <svg class="slds-button__icon" aria-hidden="true">
                    <use xmlns:xlink="http://www.w3.org/1999/xlink"
                         xlink:href="../../assets/lightning/assets/icons/utility-sprite/svg/symbols.svg#chevrondown"/>
                </svg>
            </button>
        </div>
        
        <div class="slds-context-bar__icon-action slds-col_bump-left slds-p-left_none">
            <button class="slds-button slds-button_icon slds-button_icon-container slds-button_icon-x-small"
                    tabindex="-1" :title="'Fechar ' + tabData.tabName">
                <svg class="slds-button__icon" aria-hidden="true">
                    <use xmlns:xlink="http://www.w3.org/1999/xlink"
                         xlink:href="../../assets/lightning/assets/icons/utility-sprite/svg/symbols.svg#close"/>
                </svg>
            </button>
        </div>
    </li>
</template>

上面的这个组件在名为 GlobalNavigation 的其他组件中被调用：

import DashboardTab from '../navigation-tabs/DashboardTab.vue';
    import TabsContainer from '../navigation-tabs/TabsContainer.vue';
    import NavigationTab from '../navigation-tabs/NavigationTab.vue';
    
    export default {
        data() {
            return {
                navigationTabs: [
                    {
                        tabName: 'Organizações',
                        hasMenu: true
                    },
                    {
                        tabName: 'Contas',
                        hasMenu: false
                    }
                ]
            };
        },
        components: {
            ursusDashboardTab: DashboardTab,
            ursusTabsContainer: TabsContainer,
            ursusNavigationTab: NavigationTab
        }
    }

.slds-global-navigation {
        margin-top: 50px;
    }

<template>
    <div class="slds-global-navigation">
        <div class="slds-context-bar slds-context-bar_tabs">
            <div class="slds-context-bar__primary">
                <ursus-dashboard-tab></ursus-dashboard-tab>
            </div>
            <ursus-tabs-container>
                <ursus-navigation-tab
                        v-for="tab in navigationTabs"
                        :tabData="tab"/>
            </ursus-tabs-container>
        </div>
    </div>
</template>

最后在我的 App.vue 文件中调用了 GlobalNavigation

export default {
    data() {
        return {
            displayTrialBar: false,
            displayAlert: false
        }
    }
}

.slds-unscrollable-page {
        overflow: hidden;
    }

<template>
    <div class="slds-unscrollable-page">
        <ursus-trial-bar v-if="displayTrialBar"></ursus-trial-bar>
        <ursus-alert v-if="displayAlert"></ursus-alert>
        <ursus-global-header></ursus-global-header>
        <ursus-global-navigation></ursus-global-navigation>
        <ursus-main-area></ursus-main-area>
    </div>
</template>

在这里你可以查看我的 main.js

import Vue from 'vue';
import VueRouter from 'vue-router';
import VueResource from 'vue-resource';
import App from './App.vue';
import {routes} from './routes';
import { store } from './store';

import TrialBar from './components/global/TrialBar.vue';
import Alert from './components/global/Alert.vue';
import GlobalHeader from './components/global/GlobalHeader.vue';
import GlobalNavigation from './components/global/GlobalNavigation.vue';
import MainArea from './components/global/MainArea.vue';
import PageHeader from './components/page/PageHeader.vue';
import PageBody from './components/page/PageBody.vue';

Vue.use(VueRouter);
Vue.use(VueResource);

Vue.component('ursus-trial-bar', TrialBar);
Vue.component('ursus-alert', Alert);
Vue.component('ursus-global-header', GlobalHeader);
Vue.component('ursus-global-navigation', GlobalNavigation);
Vue.component('ursus-main-area', MainArea);
Vue.component('ursus-page-header', PageHeader);
Vue.component('ursus-page-body', PageBody);

const router = new VueRouter({
    routes,
    mode: 'history'
});

new Vue({
  el: '#app',
  store,
  router,
  render: h => h(App)
})

还有我的 webpack.config.js

var path = require('path')
var webpack = require('webpack')

module.exports = {
  entry: './src/main.js',
  output: {
    path: path.resolve(__dirname, './dist'),
    publicPath: '/dist/',
    filename: 'build.js'
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [
          'vue-style-loader',
          'css-loader'
        ],
      },
      {
        test: /\.scss$/,
        use: [
          'vue-style-loader',
          'css-loader',
          'sass-loader'
        ],
      },
      {
        test: /\.sass$/,
        use: [
          'vue-style-loader',
          'css-loader',
          'sass-loader?indentedSyntax'
        ],
      },
      {
        test: /\.vue$/,
        loader: 'vue-loader',
        options: {
          loaders: {
            // Since sass-loader (weirdly) has SCSS as its default parse mode, we map
            // the "scss" and "sass" values for the lang attribute to the right configs here.
            // other preprocessors should work out of the box, no loader config like this necessary.
            'scss': [
              'vue-style-loader',
              'css-loader',
              'sass-loader'
            ],
            'sass': [
              'vue-style-loader',
              'css-loader',
              'sass-loader?indentedSyntax'
            ]
          }
          // other vue-loader options go here
        }
      },
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        loader: 'file-loader',
        options: {
          name: '[name].[ext]?[hash]'
        }
      }
    ]
  },
  resolve: {
    alias: {
      'vue$': 'vue/dist/vue.esm.js'
    },
    extensions: ['*', '.js', '.vue', '.json']
  },
  devServer: {
    historyApiFallback: true,
    noInfo: true,
    overlay: true
  },
  performance: {
    hints: false
  },
  devtool: '#eval-source-map'
}

if (process.env.NODE_ENV === 'production') {
  module.exports.devtool = '#source-map'
  // http://vue-loader.vuejs.org/en/workflow/production.html
  module.exports.plugins = (module.exports.plugins || []).concat([
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: '"production"'
      }
    }),
    new webpack.optimize.UglifyJsPlugin({
      sourceMap: true,
      compress: {
        warnings: false
      }
    }),
    new webpack.LoaderOptionsPlugin({
      minimize: true
    })
  ])
}

Answer 1

您的浏览器调试显示什么？您的 svgs 有 <use> 个带有相对 url 的标签。这些将由浏览器解决，并且它们很可能没有指向您认为的位置。您的浏览器网络选项卡应该会告诉您发生了什么？

VueJs 不显示 SVG

VueJs not displaying SVGs

svg

vue.js

salesforce-lightning