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A brief discussion on how to upload images in Bootstrap

青灯夜游forward: 2021-06-24 11:47:434343browse

Bootstrap中如何上传图片？本篇文章通过示例给大家介绍一下bootstrap上传界面，并介绍一下使用Bootstrap-fileinput插件进行上传图片的方法。

【相关推荐：《bootstrap教程》】

BootStrap上传需要用到Bootstrap-fileinput插件

先来看看bootstrap上传的界面

前台界面代码

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<link href="bootstrap-fileinput/css/bootstrap.min.css" rel="stylesheet">
<link href="bootstrap-fileinput/css/fileinput.css" media="all" rel="stylesheet" type="text/css"/>
<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" media="all" rel="stylesheet" type="text/css"/>
<link href="bootstrap-fileinput/themes/explorer-fa/theme.css" media="all" rel="stylesheet" type="text/css"/>
<script src="bootstrap-fileinput/js/jquery.js"></script>
<script src="bootstrap-fileinput/js/plugins/sortable.js" type="text/javascript"></script>
<script src="bootstrap-fileinput/js/fileinput.js" type="text/javascript"></script>
    <script src="bootstrap-fileinput/js/locales/fr.js" type="text/javascript"></script>
    <script src="bootstrap-fileinput/js/locales/es.js" type="text/javascript"></script>
     <script src="bootstrap-fileinput/themes/explorer-fa/theme.js" type="text/javascript"></script>
    <script src="bootstrap-fileinput/themes/fa/theme.js" type="text/javascript"></script>
    <script src="bootstrap-fileinput/js/bootstrap.min.js" type="text/javascript"></script>
    <script src="bootstrap-fileinput/js/locales/zh.js"></script>
</head>
<body>
     <form enctype="multipart/form-data" action="uploadSuccess.do" >
     <div class="container">
        <label>图片上传</label>
        <div class="file-loading">
            <input id="file-fr" name="file" type="file" multiple>
        </div>
        <!-- <hr style="border: 2px dotted">
        <label>Spanish Input</label>
            <div class="file-loading">
                <input id="file-es" name="file-es[]" type="file" multiple>
            </div> -->
           <div>
           <input type="text" id="userImage" name="userImage" value=""/>
               <input type="submit" class="btn btn-success" value="提交"></input>
           </div>
           </div>
    </form>
</body>
<script>
    $(&#39;#file-fr&#39;).fileinput({
        theme: &#39;fa&#39;,
        language: &#39;zh&#39;,
        uploadAsync: true,//异步上传
        uploadUrl: &#39;upload.do&#39;,
        allowedFileExtensions: [&#39;jpg&#39;, &#39;png&#39;, &#39;gif&#39;,&#39;mp4&#39;],
        maxFileSize:0,
        maxFileCount:10
    }).on("fileuploaded", function(event,data) { //异步上传成功结果处理
        alert(data.response.src);
    $("#userImage").val(data.response.src);
     })
</script>
</html>

二、Controller层代码

package com.llh.controller;

import java.io.File;
import java.io.IOException;
import java.util.Date;
import java.util.Random;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import com.llh.service.UploadService;

/**
 *
 * @author Administrator
 *
 */
@Controller
@Scope("prototype")

public class UploadController {

    @Resource
    private UploadService uploadService;

    @RequestMapping(value="upload")
    public @ResponseBody String upload(HttpServletRequest request,MultipartFile file) throws IllegalStateException, IOException{
        String name= file.getOriginalFilename();
        String path = request.getServletContext().getRealPath("/upload/");//上传保存的路径
        String fileName = changeName(name);
        String rappendix = "upload/" + fileName;
        fileName = path + "\\" + fileName;
        File file1 = new File(fileName);
        file.transferTo(file1);
        String str = "{\"src\":\"" + rappendix + "\"}";
        return str;
    }
    public static String changeName(String oldName){
        Random r = new Random();
        Date d = new Date();
        String newName = oldName.substring(oldName.indexOf(&#39;.&#39;));
        newName = r.nextInt(99999999) + d.getTime() + newName;
        return newName;
    }

}

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