引入依赖

   <dependency><groupId>com.alibaba</groupId><artifactId>easyexcel</artifactId><version>2.2.6</version></dependency>

编写模板

编写代码

public class FillData {private String name;private Double number;public FillData(String name, Double number) {this.name = name;this.number = number;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Double getNumber() {return number;}public void setNumber(Double number) {this.number = number;}
}

注意：列表填充一定要用实体对象，不能用map

    @RequestMapping("/test")public void test() {// 模板注意 用{} 来表示你要用的变量，{.}表示列表 如果本来就有"{","}" 特殊字符 用"\{","\}"代替String templateFileName = "D:\\tools\\code\\excel\\demofillsimple.xlsx";String fileName = "D:\\tools\\code\\excel\\simpleFill" + System.currentTimeMillis() + ".xlsx";List<FillData> list = new ArrayList<>();FillData s1 = new FillData("张三", 20.0);FillData s2 = new FillData("李四", 50.0);list.add(s1);list.add(s2);FillConfig fillConfig = FillConfig.builder().forceNewRow(true).build();ExcelWriter writer = EasyExcel.write(fileName).withTemplate(templateFileName).build();WriteSheet sheet1 = EasyExcel.writerSheet().sheetName("1").build();// 这里 会填充到第一个sheet页为名称为 1， writer.fill(list,fillConfig,sheet1);WriteSheet sheet2 = EasyExcel.writerSheet().sheetName("2").build();// 这里 会填充到第一个sheet页为名称为 2， writer.fill(list,fillConfig, sheet2);writer.finish();}

验证