评论

收藏

[Java] 使用Vue+Spring Boot实现Excel上传功能

编程语言 编程语言 发布于:2021-10-07 11:36 | 阅读数:474 | 评论:0

这篇文章主要介绍了使用Vue+Spring Boot实现Excel上传,需要的朋友可以参考下
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:
DSC0000.jpg

DSC0001.jpg

DSC0002.jpg DSC0003.jpg 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 vue
npm install -g vue-cli
npm 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>
 <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:
DSC0004.jpg

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:
DSC0005.jpg

DSC0006.jpg
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;
@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
@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;
@service
public 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;
@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:
DSC0007.jpg

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CodeAE代码之家网站的支持!
原文链接:https://juejin.im/post/5bff4a1851882516eb5625a1

关注下面的标签,发现更多相似文章