之前使用word作为文件模板，添加变量生成word文件，现在需要使用Excel作为文件模板填充变量生成Excel，首先考虑使用国产的esayExcel进行填充生成，easyExcel官网地址

https://easyexcel.opensource.alibaba.com/docs/current/

 下面看一下我这里需要制作的模板信息，这里包含普通变量，表格循环和图片展示，模板文件信   息如下

 生成后的文件截图

具体代码如下，这里需要注意表格循环后面还有变量的话，填充的配置一定要是这个

FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build();

 会自动换行

package com.example.demo.util;

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelWriter;
import com.alibaba.excel.enums.WriteDirectionEnum;
import com.alibaba.excel.write.metadata.WriteSheet;
import com.alibaba.excel.write.metadata.fill.FillConfig;
import com.alibaba.excel.write.metadata.fill.FillWrapper;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author qiankun.hu
 * @version 1.0.0
 * @createTime 2022年07月26日 13:47:00
 * @Description easyExcel模板填充
 */
public class EasyExcelUtil {

    public static void main(String[] args) throws MalformedURLException {

        List<Map<String, Object>> paramValueMapListNew = new ArrayList<>();
        for (int i = 0; i < 2; i++) {
            Map<String, Object> cmap = new HashMap<>();
            cmap.put("id", i);
            cmap.put("name", "药品" + i);
            cmap.put("guige",  i +"ml" );
            paramValueMapListNew.add(cmap);
        }

        long begin = System.currentTimeMillis();
        //设置输出流和模板信息
        ExcelWriter excelWriter = EasyExcel.write("D:\\workSpace\\66.xlsx").withTemplate("D:\\workSpace\\easy模板1.xlsx").build();
        WriteSheet writeSheet0 = EasyExcel.writerSheet(0).build();
        //开启自动换行,自动换行表示每次写入一条list数据是都会重新生成一行空行,此选项默认是关闭的,需要提前设置为true
        FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build();
        excelWriter.fill(new FillWrapper("user", paramValueMapListNew), fillConfig, writeSheet0);
        excelWriter.fill(new FillWrapper("site", paramValueMapListNew), fillConfig, writeSheet0);

        FillConfig fillConfig2 = FillConfig.builder().direction(WriteDirectionEnum.HORIZONTAL).build();
        excelWriter.fill( paramValueMapListNew, fillConfig2, writeSheet0);

        Map<String, Object> map = new HashMap<>();
        map.put("title", "药品回收记录单");
        map.put("total", 1000);
        map.put("time", "2022年07月22日13:28:28");
        map.put("image", new URL("https://image.baidu.com/search/down?tn=download&ipn=dwnl&word=download&ie=utf8&fr=result&url=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%253A%252F%252Fimg.jj20.com%252Fup%252Fallimg%252F4k%252Fs%252F02%252F2109242306111155-0-lp.jpg%26refer%3Dhttp%253A%252F%252Fimg.jj20.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Dauto%3Fsec%3D1661051088%26t%3D66856c9f40dffe887a63f02f856d8637&thumburl=https%3A%2F%2Fimg0.baidu.com%2Fit%2Fu%3D3798217922%2C3880088897%26fm%3D253%26fmt%3Dauto%26app%3D120%26f%3DJPEG%3Fw%3D889%26h%3D500"));
        excelWriter.fill(map, writeSheet0);
        excelWriter.finish();
        System.out.println(System.currentTimeMillis() - begin);

    }
}

 easyExcel maven版本

        <!--easyExcel-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>easyexcel</artifactId>
            <version>3.1.0</version>
        </dependency>

 如果是多个sheet页制作，需要多个  WriteSheet 信息

WriteSheet writeSheet0 = EasyExcel.writerSheet(0).build();   信息，改变其中的数字既可，多个sheet页参数信息不公用，

代码如下

        WriteSheet writeSheet0 = EasyExcel.writerSheet(0).build();
        //开启自动换行,自动换行表示每次写入一条list数据是都会重新生成一行空行,此选项默认是关闭的,需要提前设置为true
        FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build();
        FillConfig fillConfig2 = FillConfig.builder().direction(WriteDirectionEnum.HORIZONTAL).build();
        //excelWriter.fill(paramValueMapListNew, fillConfig, writeSheet);
        excelWriter.fill(new FillWrapper("user", paramValueMapListNew), fillConfig, writeSheet0);
        excelWriter.fill(new FillWrapper("site", paramValueMapListNew), fillConfig, writeSheet0);
        excelWriter.fill( paramValueMapListNew, fillConfig2, writeSheet0);

        Map<String, Object> map1 = new HashMap<>();
        map1.put("title", "药品回收记录单");
        map1.put("total", 1000);
        map1.put("time", "2022年07月22日13:28:28");
        map1.put("image", new URL("https://image.baidu.com/search/down?tn=download&ipn=dwnl&word=download&ie=utf8&fr=result&url=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%253A%252F%252Fimg.jj20.com%252Fup%252Fallimg%252F4k%252Fs%252F02%252F2109242306111155-0-lp.jpg%26refer%3Dhttp%253A%252F%252Fimg.jj20.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Dauto%3Fsec%3D1661051088%26t%3D66856c9f40dffe887a63f02f856d8637&thumburl=https%3A%2F%2Fimg0.baidu.com%2Fit%2Fu%3D3798217922%2C3880088897%26fm%3D253%26fmt%3Dauto%26app%3D120%26f%3DJPEG%3Fw%3D889%26h%3D500"));
        excelWriter.fill(map1, writeSheet0);


        WriteSheet writeSheet1 = EasyExcel.writerSheet(1).build();
        excelWriter.fill(new FillWrapper("user", paramValueMapListNew), fillConfig, writeSheet1);
        excelWriter.fill(new FillWrapper("site", paramValueMapListNew), fillConfig, writeSheet1);
        excelWriter.fill( paramValueMapListNew, fillConfig2, writeSheet1);
        map1.put("image", new URL("https://image.baidu.com/search/down?tn=download&ipn=dwnl&word=download&ie=utf8&fr=result&url=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%253A%252F%252Fimg.jj20.com%252Fup%252Fallimg%252F4k%252Fs%252F02%252F2109242306111155-0-lp.jpg%26refer%3Dhttp%253A%252F%252Fimg.jj20.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Dauto%3Fsec%3D1661051088%26t%3D66856c9f40dffe887a63f02f856d8637&thumburl=https%3A%2F%2Fimg0.baidu.com%2Fit%2Fu%3D3798217922%2C3880088897%26fm%3D253%26fmt%3Dauto%26app%3D120%26f%3DJPEG%3Fw%3D889%26h%3D500"));
        excelWriter.fill(map1, writeSheet1);