EasyExcel优势
<!-- easyexcel 主要依赖 这一个基本上就够了--> <dependency> <groupId>com.alibaba</groupId> <artifactId>easyexcel</artifactId> <version>2.1.4</version> </dependency> <!-- servlet-api --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>4.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.47</version> </dependency>
/** * EasyExcel 导入监听 */ public class ExcelListener extends AnalysisEventListener { //可以通过实例获取该值 private List<Object> datas = new ArrayList<Object>(); @Override public void invoke(Object o, AnalysisContext analysisContext) { datas.add(o);//数据存储到list,供批量处理,或后续自己业务逻辑处理。 doSomething(o);//根据自己业务做处理 } private void doSomething(Object object) { //1、入库调用接口 } public List<Object> getDatas() { return datas; } public void setDatas(List<Object> datas) { this.datas = datas; } @Override public void doAfterAllAnalysed(AnalysisContext analysisContext) { // datas.clear();//解析结束销毁不用的资源 } }
try { //获取文件名 String filename = file.getOriginalFilename(); //获取文件流 InputStream inputStream = file.getInputStream(); //实例化实现了AnalysisEventListener接口的类 ExcelListener listener = new ExcelListener(); //传入参数 ExcelReader excelReader = new ExcelReader(inputStream, ExcelTypeEnum.XLS, null, listener); //读取信息 excelReader.read(new Sheet(1, 0, Test.class)); //获取数据 List<Object> list = listener.getDatas(); if (list.size() > 1) { for (int i = 0; i < list.size(); i++) { Testobj = (Test) list.get(i); JSONObject jo = new JSONObject(); } } } catch (Exception e) { System.out.println(e.getMessage()); }
try { String filenames = "111111"; String userAgent = request.getHeader("User-Agent"); if (userAgent.contains("MSIE") || userAgent.contains("Trident")) { filenames = URLEncoder.encode(filenames, "UTF-8"); } else { filenames = new String(filenames.getBytes("UTF-8"), "ISO-8859-1"); } response.setContentType("application/vnd.ms-exce"); response.setCharacterEncoding("utf-8"); response.addHeader("Content-Disposition", "filename=" + filenames + ".xlsx"); EasyExcel.write(response.getOutputStream(), Test.class).sheet("sheet").doWrite(testList); } catch (Exception e) { }
List<Test> testList = new ArrayList<>(); try { String strUrl = "C:\\Users\\Administrator\\Desktop\\json.xlsx"; File multipartFile = new File(strUrl); InputStream inputStream = new FileInputStream(multipartFile); //实例化实现了AnalysisEventListener接口的类 ExcelListener listener = new ExcelListener(); //传入参数 ExcelReader excelReader = new ExcelReader(inputStream, ExcelTypeEnum.XLS, null, listener); //读取信息 excelReader.read(new Sheet(1, 0, Test.class)); //获取数据 List<Object> list = listener.getDatas(); if (list.size() > 1) { for (int i = 0; i < list.size(); i++) { Testobj = (Test) list.get(i); } } } catch (Exception e) { System.out.println(e.getMessage()); } try { String strUrl = "C:\\Users\\Administrator\\Desktop\\json"+System.currentTimeMillis()+".xlsx"; EasyExcel.write(strUrl,Test.class).sheet("sheet").doWrite(testList); } catch (Exception e) { }
以上就是EasyExcel的基础使用过程,欢迎点赞关注交流。