这篇文章主要介绍了使用jxl简化poi代码，实现导出Excel多sheet页功能，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧。以下代码就是一个小demo，大家可以直接自己创建maven项目然后跟着步骤来学习，步骤相对来说是比较全面的。
<dependencies>
<dependency>
<groupId>org.apache.xmlbeans</groupId>
<artifactId>xmlbeans</artifactId>
<version>2.6.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-jexl</artifactId>
<version>2.1.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>net.sf.jxls</groupId>
<artifactId>jxls-core</artifactId>
<version>1.0.3</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>net.sf.jxls</groupId>
<artifactId>jxls-reader</artifactId>
<version>1.0.3</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.9</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.9</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.9</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>1.3.2</version>
</dependency>
</dependencies>
package com.gzl.util;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import net.sf.jxls.transformer.XLSTransformer;
import org.apache.commons.io.FilenameUtils;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.usermodel.Workbook;
public class ExcelUtil {
public static void writeExcel(Workbook workBook, String targetFilePath) throws IOException {
OutputStream os = new FileOutputStream(targetFilePath);
workBook.write(os);
os.flush();
os.close();
}
public static void createAndWriteExcelMultipleSheets(Map<String, Object> dataParam, List<?> data, List<?> sheets, String tag, String templateFilePath, String targetFilePath) throws InvalidFormatException, IOException {
checkFileExtension(templateFilePath, targetFilePath);
InputStream is = new FileInputStream(templateFilePath);
XLSTransformer transformer = new XLSTransformer();
Workbook workbook = transformer.transformMultipleSheetsList(is, data, sheets, tag, dataParam, 0);
writeExcel(workbook, targetFilePath);
}
private static void checkFileExtension(String templateFilePath, String targetFilePath) {
if (!Objects.equals(FilenameUtils.getExtension(templateFilePath),
FilenameUtils.getExtension(templateFilePath)))
throw new IllegalArgumentException("模板后缀跟要保存的Excel文件后缀不一样");
}
}
这个测试方法当中我们是直接导出doctorVillage模板，在现实项目当中，有时候会多处存在导出表格功能，一般模板名称让前台来传，然后根据传的参数来控制他需要执行的方法，以及所对应的模板。
package com.gzl.util;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
public class Test2 {
public static void main(String[] args) throws InvalidFormatException, IOException {
String path = Test1.class.getResource("/template/")
.getPath();
// getResource对中文进行了编码，需要调用decode解码
path = java.net.URLDecoder.decode(path, "utf-8");
String fileNames = "";
//模板全路径
String templateFilePath = path + "doctorVillage" + ".xls";
//判断是否是windows，这些代码相当于找临时存储路径，我们要自己设置的话，这个就可以忽略掉
boolean flag = System.getProperty("os.name").contains("Window");
String fileName = UUID.randomUUID().toString();
String targetFilePath = "";
if(flag) {
//获取系统临时目录
targetFilePath = System.getProperty("java.io.tmpdir") + fileName + ".xls";
} else {
targetFilePath = System.getProperty("java.io.tmpdir")+ File.separator + fileName + ".xls";
}
//模拟数据
List<List<Map<String, Object>>> list = getList();
//这个list代表分为两个sheet页,并且这个sheet页名称也是我们所设置的
List<String> listSheetNames = new ArrayList<String>();
listSheetNames.add("湘潭市");
listSheetNames.add("河南省");
//list存放数据的map，listSheetNames代表sheet页，templateFilePath模板全路径，targetFilePath存放临时路径
ExcelUtil.createAndWriteExcelMultipleSheets(
new HashMap<String, Object>(), list, listSheetNames, "result",
templateFilePath, targetFilePath);
//知道了位置，然后下载的时候直接找这个路径下载即可
System.out.println(targetFilePath);
}
//实战当中这个方法应该是从数据库当中查的
public static List<List<Map<String, Object>>> getList() {
//每一个list代表一个sheet页的数据
List<List<Map<String, Object>>> list2 = new ArrayList();
//这里我们用map为例，这个是用什么都可以的。
List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
Map<String, Object> map1 = new HashMap<String, Object>();
map1.put("rownums", Integer.valueOf(1));
map1.put("cityName", "湘潭市");
map1.put("countyName", "湘潭县");
map1.put("townName", "中路铺镇");
Map<String, Object> map2 = new HashMap<String, Object>();
map2.put("rownums", Integer.valueOf(2));
map2.put("cityName", "湘潭市");
map2.put("countyName", "雨湖区");
map2.put("townName", "基建营");
list.add(map1);
list.add(map2);
list2.add(list);
List<Map<String, Object>> list1 = new ArrayList<Map<String, Object>>();
Map<String, Object> map3 = new HashMap<String, Object>();
map3.put("rownums", Integer.valueOf(1));
map3.put("cityName", "河南省");
map3.put("countyName", "安阳市");
map3.put("townName", "林州市");
Map<String, Object> map4 = new HashMap<String, Object>();
map4.put("rownums", Integer.valueOf(2));
map4.put("cityName", "河南省");
map4.put("countyName", "安阳市");
map4.put("townName", "汤阴县");
list1.add(map3);
list1.add(map4);
list2.add(list1);
return list2;
}
}
