springboot的fileinput-webjars的引入之bootstrap4不能使用字体图标（glyphicon）问题解决

引言
再网上看到bootstrap-fileinput这个项目可以轻松的写出漂亮的文件输入样式，而该项目低版本与bootstrap的兼容性不是很好，搞版本却使用了bootstrap-4，bootstrap-4不再支持字体图标，fileinput中却使用了字体图标。以下将介绍找的的解决方案。

解决思路

	下载bootstrap-3的字体图标放在本地，自定义写bootstrap-icon.css文件。

pom文件的内容如下

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0modelVersion>

    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>2.2.7.RELEASEversion>
        <relativePath/>
    parent>

    <groupId>com.footprintgroupId>
    <artifactId>webdemoartifactId>
    <version>1.0-SNAPSHOTversion>
    <name>webDemoname>
    <description>A simple webdescription>

    <properties>
        <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
        <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
        <java.version>1.8java.version>
        <bootstrap-fileinput.version>4.4.8bootstrap-fileinput.version>
    properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starterartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintagegroupId>
                    <artifactId>junit-vintage-engineartifactId>
                exclusion>
            exclusions>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>

        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-thymeleafartifactId>
        dependency>

        
        <dependency>
            <groupId>org.webjars.bowergroupId>
            <artifactId>bootstrap-fileinputartifactId>
            <version>${bootstrap-fileinput.version}version>
        dependency>
        
    dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-maven-pluginartifactId>
            plugin>
        plugins>
    build>
project>

文件夹目录

bootstrap-inco.css的内容

@font-face {
    font-family: 'Glyphicons Halflings';

    src: url('fonts/glyphicons-halflings-regular.eot');
    src: url('fonts/glyphicons-halflings-regular.eot?#iefix') format('embedded-opentype'), url('fonts/glyphicons-halflings-regular.woff') format('woff'), url('fonts/glyphicons-halflings-regular.ttf') format('truetype'), url('fonts/glyphicons-halflings-regular.svg#glyphicons_halflingsregular') format('svg');
}
.glyphicon {
    position: relative;
    top: 1px;
    display: inline-block;
    font-family: 'Glyphicons Halflings';
    font-style: normal;
    font-weight: normal;
    line-height: 1;

    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.glyphicon-asterisk:before {
    content: "\2a";
}
.glyphicon-plus:before {
    content: "\2b";
}
.glyphicon-euro:before,
.glyphicon-eur:before {
    content: "\20ac";
}
.glyphicon-minus:before {
    content: "\2212";
}
.glyphicon-cloud:before {
    content: "\2601";
}
.glyphicon-envelope:before {
    content: "\2709";
}
.glyphicon-pencil:before {
    content: "\270f";
}
.glyphicon-glass:before {
    content: "\e001";
}
.glyphicon-music:before {
    content: "\e002";
}
.glyphicon-search:before {
    content: "\e003";
}
.glyphicon-heart:before {
    content: "\e005";
}
.glyphicon-star:before {
    content: "\e006";
}
.glyphicon-star-empty:before {
    content: "\e007";
}
.glyphicon-user:before {
    content: "\e008";
}
.glyphicon-film:before {
    content: "\e009";
}
.glyphicon-th-large:before {
    content: "\e010";
}
.glyphicon-th:before {
    content: "\e011";
}
.glyphicon-th-list:before {
    content: "\e012";
}
.glyphicon-ok:before {
    content: "\e013";
}
.glyphicon-remove:before {
    content: "\e014";
}
.glyphicon-zoom-in:before {
    content: "\e015";
}
.glyphicon-zoom-out:before {
    content: "\e016";
}
.glyphicon-off:before {
    content: "\e017";
}
.glyphicon-signal:before {
    content: "\e018";
}
.glyphicon-cog:before {
    content: "\e019";
}
.glyphicon-trash:before {
    content: "\e020";
}
.glyphicon-home:before {
    content: "\e021";
}
.glyphicon-file:before {
    content: "\e022";
}
.glyphicon-time:before {
    content: "\e023";
}
.glyphicon-road:before {
    content: "\e024";
}
.glyphicon-download-alt:before {
    content: "\e025";
}
.glyphicon-download:before {
    content: "\e026";
}
.glyphicon-upload:before {
    content: "\e027";
}
.glyphicon-inbox:before {
    content: "\e028";
}
.glyphicon-play-circle:before {
    content: "\e029";
}
.glyphicon-repeat:before {
    content: "\e030";
}
.glyphicon-refresh:before {
    content: "\e031";
}
.glyphicon-list-alt:before {
    content: "\e032";
}
.glyphicon-lock:before {
    content: "\e033";
}
.glyphicon-flag:before {
    content: "\e034";
}
.glyphicon-headphones:before {
    content: "\e035";
}
.glyphicon-volume-off:before {
    content: "\e036";
}
.glyphicon-volume-down:before {
    content: "\e037";
}
.glyphicon-volume-up:before {
    content: "\e038";
}
.glyphicon-qrcode:before {
    content: "\e039";
}
.glyphicon-barcode:before {
    content: "\e040";
}
.glyphicon-tag:before {
    content: "\e041";
}
.glyphicon-tags:before {
    content: "\e042";
}
.glyphicon-book:before {
    content: "\e043";
}
.glyphicon-bookmark:before {
    content: "\e044";
}
.glyphicon-print:before {
    content: "\e045";
}
.glyphicon-camera:before {
    content: "\e046";
}
.glyphicon-font:before {
    content: "\e047";
}
.glyphicon-bold:before {
    content: "\e048";
}
.glyphicon-italic:before {
    content: "\e049";
}
.glyphicon-text-height:before {
    content: "\e050";
}
.glyphicon-text-width:before {
    content: "\e051";
}
.glyphicon-align-left:before {
    content: "\e052";
}
.glyphicon-align-center:before {
    content: "\e053";
}
.glyphicon-align-right:before {
    content: "\e054";
}
.glyphicon-align-justify:before {
    content: "\e055";
}
.glyphicon-list:before {
    content: "\e056";
}
.glyphicon-indent-left:before {
    content: "\e057";
}
.glyphicon-indent-right:before {
    content: "\e058";
}
.glyphicon-facetime-video:before {
    content: "\e059";
}
.glyphicon-picture:before {
    content: "\e060";
}
.glyphicon-map-marker:before {
    content: "\e062";
}
.glyphicon-adjust:before {
    content: "\e063";
}
.glyphicon-tint:before {
    content: "\e064";
}
.glyphicon-edit:before {
    content: "\e065";
}
.glyphicon-share:before {
    content: "\e066";
}
.glyphicon-check:before {
    content: "\e067";
}
.glyphicon-move:before {
    content: "\e068";
}
.glyphicon-step-backward:before {
    content: "\e069";
}
.glyphicon-fast-backward:before {
    content: "\e070";
}
.glyphicon-backward:before {
    content: "\e071";
}
.glyphicon-play:before {
    content: "\e072";
}
.glyphicon-pause:before {
    content: "\e073";
}
.glyphicon-stop:before {
    content: "\e074";
}
.glyphicon-forward:before {
    content: "\e075";
}
.glyphicon-fast-forward:before {
    content: "\e076";
}
.glyphicon-step-forward:before {
    content: "\e077";
}
.glyphicon-eject:before {
    content: "\e078";
}
.glyphicon-chevron-left:before {
    content: "\e079";
}
.glyphicon-chevron-right:before {
    content: "\e080";
}
.glyphicon-plus-sign:before {
    content: "\e081";
}
.glyphicon-minus-sign:before {
    content: "\e082";
}
.glyphicon-remove-sign:before {
    content: "\e083";
}
.glyphicon-ok-sign:before {
    content: "\e084";
}
.glyphicon-question-sign:before {
    content: "\e085";
}
.glyphicon-info-sign:before {
    content: "\e086";
}
.glyphicon-screenshot:before {
    content: "\e087";
}
.glyphicon-remove-circle:before {
    content: "\e088";
}
.glyphicon-ok-circle:before {
    content: "\e089";
}
.glyphicon-ban-circle:before {
    content: "\e090";
}
.glyphicon-arrow-left:before {
    content: "\e091";
}
.glyphicon-arrow-right:before {
    content: "\e092";
}
.glyphicon-arrow-up:before {
    content: "\e093";
}
.glyphicon-arrow-down:before {
    content: "\e094";
}
.glyphicon-share-alt:before {
    content: "\e095";
}
.glyphicon-resize-full:before {
    content: "\e096";
}
.glyphicon-resize-small:before {
    content: "\e097";
}
.glyphicon-exclamation-sign:before {
    content: "\e101";
}
.glyphicon-gift:before {
    content: "\e102";
}
.glyphicon-leaf:before {
    content: "\e103";
}
.glyphicon-fire:before {
    content: "\e104";
}
.glyphicon-eye-open:before {
    content: "\e105";
}
.glyphicon-eye-close:before {
    content: "\e106";
}
.glyphicon-warning-sign:before {
    content: "\e107";
}
.glyphicon-plane:before {
    content: "\e108";
}
.glyphicon-calendar:before {
    content: "\e109";
}
.glyphicon-random:before {
    content: "\e110";
}
.glyphicon-comment:before {
    content: "\e111";
}
.glyphicon-magnet:before {
    content: "\e112";
}
.glyphicon-chevron-up:before {
    content: "\e113";
}
.glyphicon-chevron-down:before {
    content: "\e114";
}
.glyphicon-retweet:before {
    content: "\e115";
}
.glyphicon-shopping-cart:before {
    content: "\e116";
}
.glyphicon-folder-close:before {
    content: "\e117";
}
.glyphicon-folder-open:before {
    content: "\e118";
}
.glyphicon-resize-vertical:before {
    content: "\e119";
}
.glyphicon-resize-horizontal:before {
    content: "\e120";
}
.glyphicon-hdd:before {
    content: "\e121";
}
.glyphicon-bullhorn:before {
    content: "\e122";
}
.glyphicon-bell:before {
    content: "\e123";
}
.glyphicon-certificate:before {
    content: "\e124";
}
.glyphicon-thumbs-up:before {
    content: "\e125";
}
.glyphicon-thumbs-down:before {
    content: "\e126";
}
.glyphicon-hand-right:before {
    content: "\e127";
}
.glyphicon-hand-left:before {
    content: "\e128";
}
.glyphicon-hand-up:before {
    content: "\e129";
}
.glyphicon-hand-down:before {
    content: "\e130";
}
.glyphicon-circle-arrow-right:before {
    content: "\e131";
}
.glyphicon-circle-arrow-left:before {
    content: "\e132";
}
.glyphicon-circle-arrow-up:before {
    content: "\e133";
}
.glyphicon-circle-arrow-down:before {
    content: "\e134";
}
.glyphicon-globe:before {
    content: "\e135";
}
.glyphicon-wrench:before {
    content: "\e136";
}
.glyphicon-tasks:before {
    content: "\e137";
}
.glyphicon-filter:before {
    content: "\e138";
}
.glyphicon-briefcase:before {
    content: "\e139";
}
.glyphicon-fullscreen:before {
    content: "\e140";
}
.glyphicon-dashboard:before {
    content: "\e141";
}
.glyphicon-paperclip:before {
    content: "\e142";
}
.glyphicon-heart-empty:before {
    content: "\e143";
}
.glyphicon-link:before {
    content: "\e144";
}
.glyphicon-phone:before {
    content: "\e145";
}
.glyphicon-pushpin:before {
    content: "\e146";
}
.glyphicon-usd:before {
    content: "\e148";
}
.glyphicon-gbp:before {
    content: "\e149";
}
.glyphicon-sort:before {
    content: "\e150";
}
.glyphicon-sort-by-alphabet:before {
    content: "\e151";
}
.glyphicon-sort-by-alphabet-alt:before {
    content: "\e152";
}
.glyphicon-sort-by-order:before {
    content: "\e153";
}
.glyphicon-sort-by-order-alt:before {
    content: "\e154";
}
.glyphicon-sort-by-attributes:before {
    content: "\e155";
}
.glyphicon-sort-by-attributes-alt:before {
    content: "\e156";
}
.glyphicon-unchecked:before {
    content: "\e157";
}
.glyphicon-expand:before {
    content: "\e158";
}
.glyphicon-collapse-down:before {
    content: "\e159";
}
.glyphicon-collapse-up:before {
    content: "\e160";
}
.glyphicon-log-in:before {
    content: "\e161";
}
.glyphicon-flash:before {
    content: "\e162";
}
.glyphicon-log-out:before {
    content: "\e163";
}
.glyphicon-new-window:before {
    content: "\e164";
}
.glyphicon-record:before {
    content: "\e165";
}
.glyphicon-save:before {
    content: "\e166";
}
.glyphicon-open:before {
    content: "\e167";
}
.glyphicon-saved:before {
    content: "\e168";
}
.glyphicon-import:before {
    content: "\e169";
}
.glyphicon-export:before {
    content: "\e170";
}
.glyphicon-send:before {
    content: "\e171";
}
.glyphicon-floppy-disk:before {
    content: "\e172";
}
.glyphicon-floppy-saved:before {
    content: "\e173";
}
.glyphicon-floppy-remove:before {
    content: "\e174";
}
.glyphicon-floppy-save:before {
    content: "\e175";
}
.glyphicon-floppy-open:before {
    content: "\e176";
}
.glyphicon-credit-card:before {
    content: "\e177";
}
.glyphicon-transfer:before {
    content: "\e178";
}
.glyphicon-cutlery:before {
    content: "\e179";
}
.glyphicon-header:before {
    content: "\e180";
}
.glyphicon-compressed:before {
    content: "\e181";
}
.glyphicon-earphone:before {
    content: "\e182";
}
.glyphicon-phone-alt:before {
    content: "\e183";
}
.glyphicon-tower:before {
    content: "\e184";
}
.glyphicon-stats:before {
    content: "\e185";
}
.glyphicon-sd-video:before {
    content: "\e186";
}
.glyphicon-hd-video:before {
    content: "\e187";
}
.glyphicon-subtitles:before {
    content: "\e188";
}
.glyphicon-sound-stereo:before {
    content: "\e189";
}
.glyphicon-sound-dolby:before {
    content: "\e190";
}
.glyphicon-sound-5-1:before {
    content: "\e191";
}
.glyphicon-sound-6-1:before {
    content: "\e192";
}
.glyphicon-sound-7-1:before {
    content: "\e193";
}
.glyphicon-copyright-mark:before {
    content: "\e194";
}
.glyphicon-registration-mark:before {
    content: "\e195";
}
.glyphicon-cloud-download:before {
    content: "\e197";
}
.glyphicon-cloud-upload:before {
    content: "\e198";
}
.glyphicon-tree-conifer:before {
    content: "\e199";
}
.glyphicon-tree-deciduous:before {
    content: "\e200";
}

html页面的引入

<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>考试题库整合title>

    <link rel="stylesheet" type="text/css" th:href="@{/css/bootstrap-icon.css}">

    <link rel="stylesheet" th:href="@{/webjars/bootstrap/4.5.0/dist/css/bootstrap.min.css}">
    <link rel="stylesheet" th:href="@{/webjars/bootstrap-fileinput/4.4.8/css/fileinput.min.css}">
    <script th:src="@{/webjars/jquery/3.5.1/dist/jquery.min.js}">script>
    <script th:src="@{/webjars/bootstrap/4.5.0/dist/js/bootstrap.min.js}">script>
    <script th:src="@{/webjars/bootstrap-fileinput/4.4.8/js/fileinput.min.js}">script>
    <script th:src="@{/webjars/bootstrap-fileinput/4.4.8/js/locales/zh.js}">script>
head>
<body>

<div class="row">
    <div class="col">
        <div class="file-loading">
            <input id="select-file" class="file"  name="file"  type="file"  data-show-preview="true" data-language="zh">
        div>
    div>
div>

body>
html>

注意事项

@font-face {
    font-family: 'Glyphicons Halflings';

    src: url('fonts/glyphicons-halflings-regular.eot');
    src: url('fonts/glyphicons-halflings-regular.eot?#iefix') format('embedded-opentype'), url('fonts/glyphicons-halflings-regular.woff') format('woff'), url('fonts/glyphicons-halflings-regular.ttf') format('truetype'), url('fonts/glyphicons-halflings-regular.svg#glyphicons_halflingsregular') format('svg');
}

css文件中的url地址，没有使用bootstrap.css的原文件，其余内容为原文件。