java读取excel中的数据存到数据库

1.导入jar包

<dependency>
           <groupId>org.apache.poi</groupId>
           <artifactId>poi</artifactId>
           <version>3.11</version>
       </dependency>

<dependency>
           <groupId>org.apache.poi</groupId>
           <artifactId>poi-examples</artifactId>
           <version>3.17</version>
       </dependency>

<dependency>
           <groupId>org.apache.poi</groupId>
           <artifactId>poi-excelant</artifactId>
           <version>3.17</version>
       </dependency>

2.配置下载模板

在controller中写下载模板接口：

@Controller
@RequestMapping(value = "/excelModel")
public class PoiExpExcel {

@RequestMapping(value = "/importExcelModel", method = RequestMethod.GET, produces = "application/json; charset=utf-8")
@ResponseBody
public ModelAndView exportExcel()throws Exception{
ModelAndView mv = new ModelAndView();
Map<String,Object> dataMap = new HashMap<String,Object>();
List<String> titles = new ArrayList<String>();
titles.add("油站编号");
titles.add("所属省份");
titles.add("所属城市");
titles.add("所属片区");
titles.add("非油品编码");
titles.add("油站名");
titles.add("油站类型");
titles.add("具体位置");
titles.add("电话（含区号）");
titles.add("营业时间");
titles.add("营业/关停");
titles.add("是否有充值业务");
titles.add("是否有便利店");
titles.add("经度");
titles.add("纬度");
titles.add("92#");
titles.add("95#");
titles.add("98#");
titles.add("0#");
dataMap.put("titles", titles);
ObjectExcelView erv = new ObjectExcelView();
mv = new ModelAndView(erv,dataMap);
return mv; }

}

在接口中使用了工具类ObjectExcelView：

public class ObjectExcelView extends AbstractExcelView{

@Override
protected void buildExcelDocument(Map<String, Object> model,
HSSFWorkbook workbook, HttpServletRequest request,
HttpServletResponse response) throws Exception {
// TODO Auto-generated method stub
Date date = new Date();
String filename = Tools.date2Str(date, "yyyyMMddHHmmss");
HSSFSheet sheet;
HSSFCell cell;
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition", "attachment;filename="+filename+".xls");
sheet = workbook.createSheet("sheet1");

List<String> titles = (List<String>) model.get("titles");
int len = titles.size();
HSSFCellStyle headerStyle = workbook.createCellStyle(); //标题样式
headerStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
headerStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
HSSFFont headerFont = workbook.createFont(); //标题字体
headerFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
headerFont.setFontHeightInPoints((short)11);
headerStyle.setFont(headerFont);
short width = 20,height=25*20;
sheet.setDefaultColumnWidth(width);
HSSFRow row=sheet.createRow(0);
for(int i=0; i<len; i++){ //设置标题
String title = titles.get(i);
if(title.equals("模板使用教程")) {
HSSFCell createCell = row.createCell(i);
//createCell.setCellValue("模板使用说明: 在油站类型列 1-中石油，2-中石化，3-其它加油站"+"\n");
createCell.setCellValue("模板使用说明: 在油站类型列 1-中石油，2-中石化，3-其它加油站");
HSSFCellStyle style=workbook.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);//水平居中
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);//垂直居中
style.setWrapText(true);//自动换行
style.setIndention((short)3);//缩进
HSSFFont font = workbook.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

font.setColor(Font.COLOR_RED);//设置字体颜色
style.setFont(font);
createCell.setCellStyle(style);
//设置合并单元格，第一个参数：起始行号；第二个参数：结束行号；第三个参数：起始列号；第四个参数：结束列号；
CellRangeAddress region=new CellRangeAddress(0, 3, i, i+1);
sheet.addMergedRegion(region);

}else {
cell = getCell(sheet, 0, i);
cell.setCellStyle(headerStyle);
setText(cell,title);
}
/*if(title.equals("车辆类型")) {
CellRangeAddressList regions = new CellRangeAddressList(1, 65535,i, i);
DVConstraint constraint =DVConstraint.createExplicitListConstraint(new String[] { "轿车","货运", "客车","工程车","卡车","SUV","MVP","油品运输车","燃气运输车"});
HSSFDataValidation dataValidate = new HSSFDataValidation(regions,constraint);
sheet.addValidationData(dataValidate);
}
if(title.equals("油品类型")) {
CellRangeAddressList regions = new CellRangeAddressList(1, 65535,i, i);
DVConstraint constraint =DVConstraint.createExplicitListConstraint(new String[] {"92#", "95#","98#", "5#","0#","-10#","-20#"});
HSSFDataValidation dataValidate = new HSSFDataValidation(regions,constraint);
sheet.addValidationData(dataValidate);
}
if(title.equals("车辆等级")) {
CellRangeAddressList regions = new CellRangeAddressList(1, 65535,i, i);
DVConstraint constraint =DVConstraint.createExplicitListConstraint(new String[] { "黑卡","钻石卡", "白金卡","黄金卡","白银卡","普通卡"});
HSSFDataValidation dataValidate = new HSSFDataValidation(regions,constraint);
sheet.addValidationData(dataValidate);
}*/

}
sheet.getRow(0).setHeight(height);
HSSFCellStyle contentStyle = workbook.createCellStyle(); //内容样式
contentStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);

List<PageData> varList = (List<PageData>) model.get("varList");
if(varList!=null) {
int varCount = varList.size();
for(int i=0; i<varCount; i++){
PageData vpd = varList.get(i);
for(int j=0;j<len;j++){
String varstr = vpd.getString("var"+(j+1)) != null ? vpd.getString("var"+(j+1)) : "";
cell = getCell(sheet, i+1, j);
cell.setCellStyle(contentStyle);
setText(cell,varstr);
}

} }

}

}

3.配置工具类ObjectExcelView引用的PageData工具类：

@SuppressWarnings("all")
public class PageData extends HashMap implements Map{

private static final long serialVersionUID = 1L;

Map map = null;
HttpServletRequest request;

public PageData(HttpServletRequest request){
this.request = request;
Map properties = request.getParameterMap();

Map returnMap = new HashMap();
Iterator entries = properties.entrySet().iterator();
Map.Entry entry;
String name = "";
String value = "";
while (entries.hasNext()) {
entry = (Map.Entry) entries.next();
name = (String) entry.getKey();
System.out.println(name);
Object valueObj = entry.getValue();
if(null == valueObj){
value = "";
}else if(valueObj instanceof String[]){
String[] values = (String[])valueObj;
for(int i=0;i<values.length;i++){
value = values[i] + ",";
}
value = value.substring(0, value.length()-1);
}else{
value = valueObj.toString();
}
returnMap.put(name, value);
}
map = returnMap;
}

public PageData() {
map = new HashMap();
}

@Override
public Object get(Object key) {
Object obj = null;
if(map.get(key) instanceof Object[]) {
Object[] arr = (Object[])map.get(key);
obj = request == null ? arr:(request.getParameter((String)key) == null ? arr:arr[0]);
} else {
obj = map.get(key);
}
return obj;
}

public String getString(Object key) {
return (String)get(key);
}

@Override
public Object put(Object key, Object value) {
return map.put(key, value);
}

@Override
public Object remove(Object key) {
return map.remove(key);
}

public void clear() {
map.clear();
}

public boolean containsKey(Object key) {
return map.containsKey(key);
}

public boolean containsValue(Object value) {
return map.containsValue(value);
}

public Set entrySet() {
return map.entrySet();
}

public boolean isEmpty() {
return map.isEmpty();
}

public Set keySet() {
return map.keySet();
}

@SuppressWarnings("unchecked")
public void putAll(Map t) {
map.putAll(t);
}

public int size() {
return map.size();
}

public Collection values() {
return map.values();
}
}

4.配置工具类ReadExcel读取excel中的内容：

@Component
public class ReadExcel {
//总行数
private int totalRows = 0;
//总条数
private int totalCells = 0;
//错误信息接收器
private String errorMsg;
//构造方法
public ReadExcel(){}
//获取总行数
public int getTotalRows() { return totalRows;}
//获取总列数
public int getTotalCells() { return totalCells;}
//获取错误信息
public String getErrorInfo() { return errorMsg; }
// @Value("${PICTURE_ADDR}")
// public String PICTURE_ADDR;

/**
* 验证EXCEL文件
* @param filePath
* @return
*/
public boolean validateExcel(String filePath){
if (filePath == null || !(WDWUtil.isExcel2003(filePath) || WDWUtil.isExcel2007(filePath))){
errorMsg = "文件名不是excel格式";
return false;
}
return true;
}

/**
* 读EXCEL文件，获取客户信息集合
* @param fielName
* @return
*/

public List<OilStation> getExcelInfo(String fileName,MultipartFile Mfile){

//把spring文件上传的MultipartFile转换成CommonsMultipartFile类型
CommonsMultipartFile cf= (CommonsMultipartFile)Mfile; //获取本地存储路径
File file = new File("D:\\fileupload");
//创建一个目录（它的路径名由当前 File 对象指定，包括任一必须的父路径。）
if (!file.exists()) file.mkdirs();
//新建一个文件
File file1 = new File("D:\\fileupload" + new Date().getTime() + ".xlsx");
//将上传的文件写入新建的文件中
try {
cf.getFileItem().write(file1);
} catch (Exception e) {
e.printStackTrace();
}

//初始化客户信息的集合
List<OilStation> oilStationList=new ArrayList<OilStation>();
//初始化输入流
InputStream is = null;
try{
//验证文件名是否合格
if(!validateExcel(fileName)){
return null;
}
//根据文件名判断文件是2003版本还是2007版本
boolean isExcel2003 = true;
if(WDWUtil.isExcel2007(fileName)){
isExcel2003 = false;
}
//根据新建的文件实例化输入流
is = new FileInputStream(file1);
//根据excel里面的内容读取客户信息
oilStationList = (List<OilStation>) getExcelInfo(is, isExcel2003);
is.close();
}catch(Exception e){
e.printStackTrace();
} finally{
if(is !=null)
{
try{
is.close();
}catch(IOException e){
is = null;
e.printStackTrace();
}
}
}
return oilStationList;
}
/**
* 根据excel里面的内容读取客户信息
* @param is 输入流
* @param isExcel2003 excel是2003还是2007版本
* @return
* @throws IOException
*/
public List<OilStation> getExcelInfo(InputStream is,boolean isExcel2003){
List<OilStation> oilStationList=null;
try{
/** 根据版本选择创建Workbook的方式 */
Workbook wb = null;
//当excel是2003时
if(isExcel2003){
wb = new HSSFWorkbook(is);
}
else{//当excel是2007时
wb = new XSSFWorkbook(is);
}
//读取Excel里面客户的信息
oilStationList=(List<OilStation>) readExcelValue(wb);
}
catch (IOException e) {
e.printStackTrace();
}
return oilStationList;
}
/**
* 读取Excel里面客户的信息
* @param wb
* @return
*/
private List<OilStation> readExcelValue(Workbook wb){
//得到第一个shell
Sheet sheet=wb.getSheetAt(0);

//得到Excel的行数
this.totalRows=sheet.getPhysicalNumberOfRows();

//得到Excel的列数(前提是有行数)
if(totalRows>=1 && sheet.getRow(0) != null){
this.totalCells=sheet.getRow(0).getPhysicalNumberOfCells();
}

List<OilStation> oilStationList=new ArrayList<OilStation>();
OilStation oilStation;
//循环Excel行数,从第二行开始。标题不入库
for(int r=1;r<totalRows;r++){
Row row = sheet.getRow(r);
if (row == null) continue;
oilStation = new OilStation();

//循环Excel的列
for(int c = 0; c <this.totalCells; c++){
Cell cell = row.getCell(c);
//System.out.println("c======:"+c+"cell:"+cell);
if(null != cell) {
cell.setCellType(Cell.CELL_TYPE_STRING);
}
if(cell!=null && !cell.equals("")) {
if(c==0){
oilStation.setStationCode(cell.getStringCellValue());//
}else if(c==1){
oilStation.setProvince(cell.getStringCellValue());//
}else if(c==2){
oilStation.setCity(cell.getStringCellValue());//
}else if(c==3){
oilStation.setArea(cell.getStringCellValue());
}else if(c==4){
oilStation.setNotOilCode(cell.getStringCellValue());
}else if(c==5){
oilStation.setName(cell.getStringCellValue());
}else if(c==6){
if(cell.getStringCellValue() != null && cell.getStringCellValue() != ""
&& !cell.getStringCellValue().equals("")) {
oilStation.setStationType(Integer.valueOf(cell.getStringCellValue()));
}
}else if(c==7){
oilStation.setAddress(cell.getStringCellValue());
}else if(c==8){
oilStation.setTelephone(cell.getStringCellValue());
}else if(c==9){//营业时间
if(StringUtil.isNotEmpty(cell.getStringCellValue())) {
oilStation.setBusinessHours(cell.getStringCellValue());
}
}else if(c==10){//营业状态
String s = cell.getStringCellValue();
if(s.contains("营业")) {
oilStation.setWorkStatus(1);
}else {
oilStation.setWorkStatus(2);
}

}else if(c==11){
String s = cell.getStringCellValue();
if(s.contains("是")) {
oilStation.setAddMoney(1);
}else {
oilStation.setAddMoney(2);
}
}else if(c==12){
String s = cell.getStringCellValue();
if(s.contains("是")) {
oilStation.setMarket(1);
}else {
oilStation.setMarket(2);
}
}else if(c==13){
oilStation.setLongitude(cell.getStringCellValue());
}else if(c==14){
oilStation.setDimension(cell.getStringCellValue());
}else if(c==15) {
String s = cell.getStringCellValue();
oilStation.setSecond(Double.parseDouble("".equals(s.toString())?"0.00":s.toString()));
}else if(c==16) {
String s = cell.getStringCellValue();
oilStation.setFive(Double.parseDouble("".equals(s.toString())?"0.00":s.toString()));
}else if(c==17) {
String s = cell.getStringCellValue();
oilStation.setEight(Double.parseDouble("".equals(s.toString())?"0.00":s.toString()));
}else if(c==18) {
String s = cell.getStringCellValue();
oilStation.setZero(Double.parseDouble("".equals(s.toString())?"0.00":s.toString()));
}else if(c==19) {
String s = cell.getStringCellValue();
if(s.contains("是")) {
oilStation.setCameraNumber("1");
}else {
oilStation.setCameraNumber("2");
}

}else if(c==20) {
oilStation.setRemark(cell.getStringCellValue());
}

}}
//添加客户
oilStationList.add(oilStation);
}
return oilStationList;
}

}

5.配置工具类ReadExcel引用的WDWUtil工具类，来判断excel的版本：

public class WDWUtil {

// @描述：是否是2003的excel，返回true是2003
public static boolean isExcel2003(String filePath) {
return filePath.matches("^.+\\.(?i)(xls)$");
}

//@描述：是否是2007的excel，返回true是2007
public static boolean isExcel2007(String filePath) {
return filePath.matches("^.+\\.(?i)(xlsx)$");
}
}

6.配置读取excel文件内容的接口，并添加到数据库中：

@RequestMapping(value = "/batchAddOilStation", method = RequestMethod.POST, produces = "application/json; charset=utf-8")
public Map<String, Object> batchAddOilStation(@RequestParam(value = "filename") MultipartFile file,HttpServletRequest request) throws FileNotFoundException {
Map<String, Object> map = new HashMap<>();
try {

String name = file.getOriginalFilename();
ReadExcel read =new ReadExcel();
List<OilStation> excelInfo = read.getExcelInfo(name, file);
boolean flag = oilStationService.batchOwners(excelInfo);
map.put("code", 200);
map.put("msg", "");
map.put("count", 1);
map.put("data", flag);
} catch (CodeException ce) {
LOGGER.error(ce.getCode() + ":" + ce.getMessage());
}
return map;
}

7.在jsp中需要配置：

<form>

<div class="row cl">
                   <label class="form-label col-xs-4 col-sm-2">导入车辆模板：</label>
                   <div class="formControls col-xs-8 col-sm-10">
                       <span class="btn-upload form-group">
                       <input class="input-text upload-url" type="text" name="uploadfile"
                           id="uploadfile" readonly="" nullmsg="请添加附件！">
                           <a href=" " class="btn btn-primary radius upload-btn">
                           <i class="Hui-iconfont" style="width: 150px"></i> 浏览文件</a>
                           <input type="file" multiple="" name="filename" id="filename" class="input-file">
                       </span>
                       <label class="btn btn-primary radius " οnclick="importExcel();" style="width: 150px">下载导入模板</label>
                   </div>
               </div>

</form>

8.在js中：

function importExcel(){
window.location.href = "/upload/uploadExcelModel/";
}

submitHandler: function(form) {
           var formData = new FormData($( "#form-add" )[0])
           $.ajax({
               type: "post",
               url: contextPath + "/owners/add",
               data: formData,
               cache: false,
           contentType: false,
           processData: false,
               dataType: "json",
               success: function(data) {
                   },
               error: function(XMLHttpRequest, textStatus, errorThrown) {
                   //alert(errorThrown);
                   return false;
               }
           });
           return false;
       }