1.pom.xml配置依赖包
org.apache.poi
poi
3.17
org.apache.poi
poi-ooxml
3.17
com.alibaba
easyexcel
1.1.2-beta5
2.编写excel导入对应实体类
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.metadata.BaseRowModel;
public class TestModel extends BaseRowModel {
@ExcelProperty(value = "姓名", index = 0)
private String xm;
@ExcelProperty(value = "微信号", index = 1)
private String wxh;
@ExcelProperty(value = "手机号", index = 2)
private String sjh;
public String getXm() {
return xm;
}
public void setXm(String xm) {
this.xm = xm;
}
public String getWxh() {
return wxh;
}
public void setWxh(String wxh) {
this.wxh = wxh;
}
public String getSjh() {
return sjh;
}
public void setSjh(String sjh) {
this.sjh = sjh;
}
}
3.编写导入监听类
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.alibaba.excel.metadata.ExcelHeadProperty;
public class ExcelListener extends AnalysisEventListener {
//自定义用于暂时存储data
private List datas = new ArrayList<>();
//导入表头
private String importHeads = "";
//模版表头
private String modelHeads = "";
/**
* 通过 AnalysisContext 对象还可以获取当前 sheet，当前行等数据
*/
@Override
public void invoke(Object o, AnalysisContext analysisContext) {
Integer currentRowNum = analysisContext.getCurrentRowNum();
//获取导入表头，默认第一行为表头
if(currentRowNum == 0){
try {
Map m = objToMap(o);
for (Object v : m.values()) {
importHeads += String.valueOf(v).trim() + ",";
}
} catch (Exception e) {
e.printStackTrace();
}
}else{
datas.add(o);
}
}
/**
* 读取完之后的操作
*/
@Override
public void doAfterAllAnalysed(AnalysisContext analysisContext) {
//获取模版表头
ExcelHeadProperty ehp = analysisContext.getExcelHeadProperty();
for(List s : ehp.getHead()){
modelHeads += s.get(0) + ",";
}
}
public List getDatas() {
return datas;
}
public void setDatas(List datas) {
this.datas = datas;
}
public String getImportHeads() {
return importHeads;
}
public void setImportHeads(String importHeads) {
this.importHeads = importHeads;
}
public String getModelHeads() {
return modelHeads;
}
public void setModelHeads(String modelHeads) {
this.modelHeads = modelHeads;
}
//Object转换为Map
public Map objToMap(Object obj) throws Exception{
Map map = new LinkedHashMap();
Field[] fields = obj.getClass().getDeclaredFields();
for(Field field : fields){
field.setAccessible(true);
map.put(field.getName(), field.get(obj));
}
return map;
}
}
4.编写导入工具类
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import org.springframework.web.multipart.MultipartFile;
import com.alibaba.excel.ExcelReader;
import com.alibaba.excel.metadata.BaseRowModel;
import com.alibaba.excel.metadata.Sheet;
public class EasyExcelUtil {
/**
* 读取某个 sheet 的 Excel
*
* @param excel 文件
* @param rowModel 实体类映射，继承 BaseRowModel 类
* @param sheetNo sheet 的序号 从1开始
* @return Excel 数据 list
*/
public static List readExcel(MultipartFile excel, BaseRowModel rowModel) throws IOException {
return readExcel(excel, rowModel, 1, 1);
}
/**
* 读取某个 sheet 的 Excel
* @param excel 文件
* @param rowModel 实体类映射，继承 BaseRowModel 类
* @param sheetNo sheet 的序号 从1开始
* @return Excel 数据 list
*/
public static Map readExcel(MultipartFile excel, BaseRowModel rowModel, int sheetNo) throws IOException {
Map result = new HashMap<>();
ExcelListener excelListener = new ExcelListener();
ExcelReader reader = getReader(excel, excelListener);
if (reader == null) {
return null;
}
reader.read(new Sheet(sheetNo, 0, rowModel.getClass()));
//校验表头
Boolean flag = false;
if(excelListener.getImportHeads().equals(excelListener.getModelHeads())){
flag = true;
}
result.put("flag", flag);
result.put("datas", excelListener.getDatas());
return result;
}
/**
* 读取某个 sheet 的 Excel
* @param excel 文件
* @param rowModel 实体类映射，继承 BaseRowModel 类
* @param sheetNo sheet 的序号 从1开始
* @param headLineNum 表头行数，默认为1
* @return Excel 数据 list
*/
public static List readExcel(MultipartFile excel, BaseRowModel rowModel, int sheetNo, int headLineNum) throws IOException {
ExcelListener excelListener = new ExcelListener();
ExcelReader reader = getReader(excel, excelListener);
if (reader == null) {
return null;
}
reader.read(new Sheet(sheetNo, headLineNum, rowModel.getClass()));
return excelListener.getDatas();
}
/**
* 读取指定sheetName的Excel(多个 sheet)
* @param excel 文件
* @param rowModel 实体类映射，继承 BaseRowModel 类
* @return Excel 数据 list
* @throws IOException
*/
public static List readExcel(MultipartFile excel, BaseRowModel rowModel,String sheetName) throws IOException {
ExcelListener excelListener = new ExcelListener();
ExcelReader reader = getReader(excel, excelListener);
if (reader == null) {
return null;
}
for (Sheet sheet : reader.getSheets()) {
if (rowModel != null) {
sheet.setClazz(rowModel.getClass());
}
//读取指定名称的sheet
if(sheet.getSheetName().contains(sheetName)){
reader.read(sheet);
break;
}
}
return excelListener.getDatas();
}
/**
* 返回 ExcelReader
* @param excel 需要解析的 Excel 文件
* @param excelListener new ExcelListener()
* @throws IOException
*/
private static ExcelReader getReader(MultipartFile excel,ExcelListener excelListener) throws IOException {
String filename = excel.getOriginalFilename();
if(filename != null && (filename.toLowerCase().endsWith(".xls") || filename.toLowerCase().endsWith(".xlsx"))){
InputStream is = new BufferedInputStream(excel.getInputStream());
return new ExcelReader(is, null, excelListener, false);
}else{
return null;
}
}
} 5.业务层调用
//导入excel
@RequestMapping(value = "excelImport", method = {RequestMethod.GET, RequestMethod.POST })
public String excelImport(HttpServletRequest request,Model model,@RequestParam("uploadFile") MultipartFile[] files) throws Exception {
if(files != null && files.length > 0){
MultipartFile file = files[0];
Map result = EasyExcelUtil.readExcel(file, new TestModel(),1);
Boolean flag = (Boolean) result.get("flag");
if(flag){
List list = (List) result.get("datas");
if(list != null && list.size() > 0){
for(Object o : list){
TestModel xfxx = (TestModel) o;
System.out.println(xfxx.getXm()+"/"+xfxx.getSjh()+"/"+xfxx.getSjh());
}
}
}else{
System.out.println("表头格式错误");
}
}
return "index";
}
