使用Vue+Spring Boot實現Excel上傳功能

這篇文章主要介紹了使用Vue+Spring Boot實現Excel上傳,需要的朋友可以參考下

1.使用Vue-Cli創建前端項目

運用vue-cli工具可以很輕鬆地構建前端項目,當然,使用WebStorm來構建會更加簡潔(如圖)。本文推薦使用WebStorm,因爲在後續開發中,IDE會使我們的開發更加簡潔。部分配置如圖:

2.Navbar編寫

作爲一個WebApp,Navbar作爲應用的導航欄是必不可少的。在本項目中,筆者引入了bootstrap對Navbar進行了輕鬆地構建。在vue中我們需要在components文件夾中將我們的組件加進去,對於本工程來說,Navbar是我們要加入的第一個組件,他獨立於router之外,一直固定在網頁上方。

2.1 首先,我們使用npm來安裝vue,vue-cli,bootstrap

npm install vue
npm install -g vue-cli
npm install --save bootstrap jquery popper.js

2.2 接下來我們在components目錄下new一個vue組件,並且在main.js中引入bootstrap依賴:

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

2.3 下面就可以開始寫代碼了,由於本文只關注table相關的功能,所以導航欄中除了Script意外的元素都已經disable,代碼如下:

<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編寫

作爲自動化工具,必不可少的一部分就是引入Script,我們希望用戶能夠自由地使用H5界面進行Script的編寫,因此在這裏使用了vue的數據雙向綁定進行Table CRUD。

3.1 新建一個vue組件ScriptTable,代碼如下:

<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 運行dev,打開localhost:8080

npm run dev

前端頁面效果如下:

至此,本文相關的純前端部分完成地差不多了,加上mock的數據後,我們可以開始進行後端的開發了。

4.使用Spring Initializr創建後端項目

爲了更輕鬆地構建工程,構建RESTful API以及更輕鬆地配置請求處理,筆者選擇了Spring Boot作爲後端框架。

4.1 首先我們使用IDEA集成的Spring Initializr來構建項目,部分配置如圖:


4.2 接下來在pom.xml中引入poi依賴,點擊import change。如下所示:

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

4.3 接下來我們在application.properties中配置server.port=8088,與前端項目分開

5.pojo類Step的編寫

下面是對pojo類的編寫,本文所需的pojo只有Step一種,與前端的table相對應,代碼如下:

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

6.UploadController的編寫

接下來是對前端Post請求的Handler(Controller)進行編寫,我們將上傳這個Post請求與"/uploadfile"相對應,注意加入@CrossOrigin註解實現跨域,代碼如下:

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
@ResponseBody
public 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的編寫

下面該編寫Service來讀取請求中傳送的文件了,簡單地來說只有一個步驟,將Excel中的Script轉換爲pojo的鏈表並在Controller中作爲ResponseBody返回.

7.1 首先創建Service接口,代碼如下:

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

7.2 接下來創建Service實現類,代碼如下:

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;
@Service
public 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.搭建簡單的RESTful API

文章臨近尾聲,現在前後端的獨立代碼基本開發完畢,是時候搭建RESTful了,本文中的API非常簡單,就是對上傳做出響應,並將返回的json寫入界面上的Table中,完成Script導入,npm安裝axios後,在ScriptTable組件中加入如下代碼:

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.運行服務,編寫Script並上傳

接下來我們創建一個Excel,按如圖格式編寫簡單Script,運行前後端服務,實現上傳:

運行後,Excel文件會上傳到後端工程的static的temp目錄中

總結

以上所述是小編給大家介紹的使用Vue+Spring Boot實現Excel上傳功能,希望對大家有所幫助,如果大家有任何疑問請給我留言,小編會及時回覆大家的。在此也非常感謝大家對神馬文庫網站的支持!

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