使用Vue+Spring Boot实现Excel上传功能

时间:2021-05-19

1.使用Vue-Cli创建前端项目

运用vue-cli工具可以很轻松地构建前端项目,当然,使用WebStorm来构建会更加简洁(如图)。本文推荐使用WebStorm,因为在后续开发中,IDE会使我们的开发更加简洁。部分配置如图:

2.Navbar编写

作为一个WebApp,Navbar作为应用的导航栏是必不可少的。在本项目中,笔者引入了bootstrap对Navbar进行了轻松地构建。在vue中我们需要在components文件夹中将我们的组件加进去,对于本工程来说,Navbar是我们要加入的第一个组件,他独立于router之外,一直固定在网页上方。

2.1 首先,我们使用npm来安装vue,vue-cli,bootstrap

npm install vuenpm install -g vue-clinpm install --save bootstrap jquery popper.js

2.2 接下来我们在components目录下new一个vue组件,并且在main.js中引入bootstrap依赖:

import 'bootstrap/dist/css/bootstrap.min.css'import 'bootstrap/dist/js/bootstrap.min'

2.3 下面就可以开始写代码了,由于本文只关注table相关的功能,所以导航栏中除了Script意外的元素都已经disable,代码如下:

<template> <nav class="navbar navbar-expand-lg navbar-dark bg-dark"> <span class="navbar-brand mb-0 h1">Vue-SpringBoot</span> <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="collapse navbar-collapse" id="navbarNav"> <ul class="navbar-nav"> <li class="nav-item"> <router-link class="nav-link" to="/home">Home</router-link> </li> <li class="nav-item active"> <router-link to="/" class="nav-link">Script</router-link> </li> <li class="nav-item"> <router-link to="/history" class="nav-link">History</router-link> </li> </ul> </div> </nav></template><script> export default { name: "MyNavbar" }</script><style scoped></style>

2.3 在App.vue中引入MyNavbar

3.Script Table编写

作为自动化工具,必不可少的一部分就是引入Script,我们希望用户能够自由地使用H5界面进行Script的编写,因此在这里使用了vue的数据双向绑定进行Table CRUD。

3.1 新建一个vue组件ScriptTable,代码如下:

<template> <div class="container-fluid" id="scriptTable"> <h3>My Script</h3> <form style="margin-top: 1rem"> <input type="file" @change="getFile($event)" class="" multiple/> <input type="button" value="upload" @click="submit($event)" class="btn btn-dark"> </form> <table class="table table-hover text-center table-bordered" style="word-break: break-all; word-wrap: break-word;margin-top: 1rem;"> <thead> <th>#</th> <th>Platform</th> <th>Action</th> <th>Path</th> <th>Value</th> <th>Wait</th> <th>Screenshot</th> <th>Change</th> </thead> <tbody> <tr v-cloak v-for="(item, index) in steps"> <th>{{index+1}}</th> <td>{{item.platform}}</td> <td>{{item.action}}</td> <td>{{item.path}}</td> <td>{{item.value}}</td> <td>{{item.wait}}</td> <td>{{item.screenshot}}</td> <td><a href="#" v-on:click="edit(item)">Edit</a> | <a href="#" v-on:click='aaa(index)'>Delete</a> </td> </tr> <tr> <th></th> <td><select class="form-control" v-model="stepstemp.platform"> <option>Web</option> <option>Android</option> </select></td> <td><select class="form-control" v-model="stepstemp.action"> <option>click</option> <option>get</option> <option>input</option> <option>swipe</option> </select></td> <td><input class="form-control" v-model="stepstemp.path" placeholder="Enter the xPath"></td> <td><input class="form-control" v-model="stepstemp.value" placeholder="Enter the input value"></td> <td><input class="form-control" v-model="stepstemp.wait" placeholder="Waiting seconds"></td> <td><select class="form-control" v-model="stepstemp.screenshot"> <option>yes</option> <option>no</option> </select></td> <td> <button class="btn btn-sm btn-dark" v-on:click='save' v-if="isNotEdit">Save</button> <button class="btn btn-sm btn-primary" v-on:click='saveEdit' v-else>SaveEdit</button> </td> </tr> </tbody> </table> <hr/> </div></template><script> import Vue from 'vue' import axios from 'axios' export default { name: "ScriptTable", data() { return ({ steps: [], stepstemp: { platform: '', action: '', path: '', value: '', wait: '', screenshot: '' }, isNotEdit: true }); }, methods: { save: function () { this.steps.push(this.stepstemp); this.stepstemp = { platform: '', action: '', path: '', value: '', wait: '', screenshot: '' }; }, aaa: function (index) { this.steps.splice(index, 1) }, edit: function (item) { this.isNotEdit = false; this.stepstemp = item; }, saveEdit: function () { this.isNotEdit = true; this.stepstemp = { platform: '', action: '', path: '', value: '', wait: '', screenshot: '' }; } } }</script><style scoped></style>

3.3 运行dev,打开localhost:8080

npm run dev

前端页面效果如下:

至此,本文相关的纯前端部分完成地差不多了,加上mock的数据后,我们可以开始进行后端的开发了。

4.使用Spring Initializr创建后端项目

为了更轻松地构建工程,构建RESTful API以及更轻松地配置请求处理,笔者选择了Spring Boot作为后端框架。

4.1 首先我们使用IDEA集成的Spring Initializr来构建项目,部分配置如图:


4.2 接下来在pom.xml中引入poi依赖,点击import change。如下所示:

<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>4.0.0</version> </dependency>

4.3 接下来我们在application.properties中配置server.port=8088,与前端项目分开

5.pojo类Step的编写

下面是对pojo类的编写,本文所需的pojo只有Step一种,与前端的table相对应,代码如下:

import lombok.Data;@Datapublic class Step { private String platform; private String action; private String path; private String value; private int wait; private String screenshot;}

6.UploadController的编写

接下来是对前端Post请求的Handler(Controller)进行编写,我们将上传这个Post请求与"/uploadfile"相对应,注意加入@CrossOrigin注解实现跨域,代码如下:

package com.daniel.vuespringbootuploadbe;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.CrossOrigin;import org.springframework.web.bind.annotation.PostMapping;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.multipart.MultipartFile;import java.io.File;import java.io.IOException;import java.nio.file.Files;import java.nio.file.Path;import java.nio.file.Paths;import java.util.List;@Controller@CrossOrigin@ResponseBodypublic class UploadController { private static String UPLOADED_FOLDER = "src/main/resources/static/temp/"; @Autowired private LoadService loadService; @PostMapping("/upload") public List<Step> singleFileUpload(MultipartFile file) { try { // Get the file and save it somewhere byte[] bytes = file.getBytes(); Path path = Paths.get(UPLOADED_FOLDER + file.getOriginalFilename()); Files.write(path, bytes); } catch (IOException e) { e.printStackTrace(); } // Print file data to html List<Step> result = loadService.castToStep(new File(UPLOADED_FOLDER + file.getOriginalFilename())); return result; }}

7.LoadService的编写

下面该编写Service来读取请求中传送的文件了,简单地来说只有一个步骤,将Excel中的Script转换为pojo的链表并在Controller中作为ResponseBody返回.

7.1 首先创建Service接口,代码如下:

package com.daniel.vuespringbootuploadbe;import org.springframework.stereotype.Service;import java.io.File;import java.util.List;@Servicepublic interface LoadService { List<Step> castToStep(File file);}

7.2 接下来创建Service实现类,代码如下:

package com.daniel.vuespringbootuploadbe;import org.apache.poi.openxml4j.exceptions.InvalidFormatException;import org.apache.poi.ss.usermodel.Row;import org.apache.poi.ss.usermodel.Sheet;import org.apache.poi.ss.usermodel.Workbook;import org.apache.poi.xssf.usermodel.XSSFWorkbook;import org.springframework.stereotype.Service;import java.io.File;import java.io.IOException;import java.util.ArrayList;import java.util.List;@Servicepublic class LoadServiceImpl implements LoadService { @Override public List<Step> castToStep(File file) { List<Step> steps = new ArrayList<>(); Workbook workbook = null; try { workbook = new XSSFWorkbook(file); } catch (IOException e) { e.printStackTrace(); } catch (InvalidFormatException e) { e.printStackTrace(); } Sheet sheet = workbook.getSheetAt(0); int num = sheet.getLastRowNum() - sheet.getFirstRowNum(); //Read steps for (int i = 0; i < num; i++) { Row row = sheet.getRow(i+1); Step step = new Step(); step.setPlatform(row.getCell(0).getStringCellValue()); step.setAction(row.getCell(1).getStringCellValue()); step.setPath(row.getCell(2).getStringCellValue()); step.setValue(row.getCell(3).getStringCellValue()); step.setWait((int) row.getCell(4).getNumericCellValue()); step.setScreenshot(row.getCell(5).getStringCellValue()); steps.add(step); } try { workbook.close(); } catch (IOException e) { e.printStackTrace(); } return steps; }}

8.搭建简单的RESTful API

文章临近尾声,现在前后端的独立代码基本开发完毕,是时候搭建RESTful了,本文中的API非常简单,就是对上传做出响应,并将返回的json写入界面上的Table中,完成Script导入,npm安装axios后,在ScriptTable组件中加入如下代码:

getFile: function (event) { this.file = event.target.files[0]; console.log(this.file); }, submit: function (event) { event.preventDefault(); let formData = new FormData(); formData.append("file", this.file); axios.post('http://localhost:8088/upload', formData) .then(function (response) { for (let i = 0; i < response.data.length; i++) { var tempData = { platform: response.data[i].platform, action: response.data[i].action, path: response.data[i].path, value: response.data[i].value, wait: response.data[i].wait, screenshot: response.data[i].screenshot }; this.steps.push(tempData); } }.bind(this)) .catch(function (error) { alert("Fail"); console.log(error); }); }

9.运行服务,编写Script并上传

接下来我们创建一个Excel,按如图格式编写简单Script,运行前后端服务,实现上传:

运行后,Excel文件会上传到后端工程的static的temp目录中

总结

以上所述是小编给大家介绍的使用Vue+Spring Boot实现Excel上传功能,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对网站的支持!

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