文件上传、POI

数据导出：

getResponse().setHeader("Content-Disposition","attachment; filename=ce_remove_mml_list.csv");

  getResponse().setContentType("application/vnd.ms-csv;CHARSET=gbk");

  getResponse().setCharacterEncoding("gbk");

  Writer sw = getResponse().getWriter();

  CSVWriter writer = new CSVWriter(sw);

 

  final String[] header = new String[]{

    "更新批次标识","BSC名称","基站编号","生成的MML命令"

    ,"CE增量","SPUO框号","SPUO槽号"

    ,"DO当前配置CE数","DO周最大使用CE数","DO准备修改的CE数"

    ,"DO物理最大CE数"

    ,"执行时间","类型"

  };

  writer.writeNext(header);

writer.writeNext(csvValue);

   if(count % 100 == 0){

    writer.flush();

   }

   count++;

  }

   writer.close();

数据导入：

public void doPost(HttpServletRequest request, HttpServletResponse response)
  throws IOException, ServletException {
 try {
  File tempfile = new File(System.getProperty("java.io.tmpdir"));//采用系统临时文件目录       
  DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();
  diskFileItemFactory.setSizeThreshold(4096);  // 设置缓冲区大小，这里是4kb
  diskFileItemFactory.setRepository(tempfile);  //设置缓冲区目录
  ServletFileUpload fu = new ServletFileUpload(diskFileItemFactory);
  fu.setSizeMax(41943040);
  List fileItems = fu.parseRequest(request);
  Iterator i = fileItems.iterator();
  while (i.hasNext()) {
   FileItem fi = (FileItem) i.next();
if (!fi.isFormField()){
   String fileName = fi.getName();
   if (fileName != null) {
   namepath = uploadPath+"/"+ fi.getName();
   File f = new File(namepath);
   fi.write(f);
   }
}else{//不是的话
     request.setAttribute(fi.getFieldName(), fi.getString());//这里就是获取他的元素名称和值放在request.Attribute中,这样当你要使用的时候直接用 request.getAttribute("form表单元素名称") 就行了
}
  }
  
File file = new File(namepath);
String sqlsStr = FileUtils.readFileToString(file, "utf-8");
String[] sqls = DbHelper.splitSqls(sqlsStr);
Map<String, Database> databases = (Map<String, Database>) request.getSession().getServletContext().getAttribute("databases");
String dbId = (String) request.getAttribute("dbId");
Database db = databases.get(dbId);


Session session = db.openSession();
session.executeBatch(sqls);
session.close();
  System.out.println("upload succeed");
  String msg = "导入成功";
  request.setAttribute("msg", msg);
 } catch (Exception e) {
  e.printStackTrace();
  throw new RuntimeException(e.getMessage(),e);
 }
 
 request.getRequestDispatcher("/database/batchImportSql.jsp").forward(request, response);
}

EXCEL.java

package com.yuqiaotech.report;


import java.io.File;
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.math.BigDecimal;
import java.sql.SQLException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;


import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
import org.apache.poi.hssf.usermodel.HSSFRichTextString;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.Region;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.util.CellRangeAddress;
/**
 * Excel操作类。
 * 本类提供了简单的获取指定cell给指定cell添加内容的方法。
 * 
 * 注意遵照java的习惯，row从0开始算，不过excel对单元格标注的习惯是从1开始算，这个需要留意。
 * 
 */
public class Excel {
private static final Log log = LogFactory.getLog(Excel.class);
HSSFWorkbook wb;
private final static SimpleDateFormat fullTimeFmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
private final static SimpleDateFormat fullDateFmt = new SimpleDateFormat("yyyy-MM-dd");
public Excel(InputStream is){
   POIFSFileSystem fs;
try {
fs = new POIFSFileSystem(is);
wb = new HSSFWorkbook(fs);
} catch (FileNotFoundException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
} 
}
public Excel(){
wb = new HSSFWorkbook();
}
public Excel(String filePath){
   POIFSFileSystem fs;
try {
fs = new POIFSFileSystem(new FileInputStream(filePath));
wb = new HSSFWorkbook(fs);
} catch (FileNotFoundException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
} 
}
class Point{
public Point(String cellPositionStr){
char[] chars = cellPositionStr.toCharArray();
int i = 0;
for (; i < chars.length; i++) {
if(Character.isDigit(chars[i])){
break;
}
}
row = Integer.parseInt(cellPositionStr.substring(i))-1;
col = cellNumStr2Int(cellPositionStr.substring(0, i));
}
public Point(String colStr,int row){
col = cellNumStr2Int(colStr);
this.row = row;
}
int row;
int col;
}
/**
* 获取sheet数目。
* @return
*/
public int getSheetCnt(){
return this.wb.getNumberOfSheets();
}
/**
* 给Excel中的某个sheet的某个单元格赋值。
* 
* @param cellPositionStr 位置参数如A12表示A列，12行。
* @param sheetNo
* @param v
* @return
*/
public HSSFCell setCellValue(String cellPositionStr, int sheetNo, Object v){
Point p = new Point(cellPositionStr);
return setCellValue( p,  sheetNo,  v);
}
public HSSFCell setCellValue(String cellPositionStr, Object v){
Point p = new Point(cellPositionStr);
return setCellValue( p,  0,  v);
}
/**
* 给Excel中的某个sheet的某个单元格赋值。
* 
* @param colNumStr 哪一列
* @param rowNum
* @param sheetNo
* @param v
* @return
*/
public HSSFCell setCellValue(String colNumStr, int rowNum, int sheetNo, Object v){
Point p = new Point(colNumStr,rowNum);
return setCellValue( p,  sheetNo,  v);
}
public HSSFCell setCellValue(Point p, int sheetNo, Object v){
return setCellValue( p.col,  p.row,  sheetNo,  v);
}
/**
* 给Excel中的某个sheet的某个单元格赋值。
* 
* @param colNum
* @param rowNum 从0开始。
* @param sheetNo 从0开始。
* @param v
* @return
*/
public HSSFCell setCellValue(int colNum, int rowNum, int sheetNo, Object v){
HSSFCell cell = this.getCell(colNum, rowNum, sheetNo);
if(v == null){
cell.setCellValue(new HSSFRichTextString(""));//TODO 添加的值是以单元格格式为准，还是以数据类型为准？
return cell;
}
if(v.getClass() == Boolean.class){
cell.setCellValue((Boolean)v);
}else if(v.getClass() == Integer.class){
cell.setCellValue((Integer)v);
}else if(v.getClass() == Double.class){
cell.setCellValue((Double)v);
}else if(v.getClass() == Float.class){
cell.setCellValue((Float)v);
}else if(v.getClass() == BigDecimal.class){
cell.setCellValue(((BigDecimal)v).doubleValue());
}else if(v instanceof Date){
cell.setCellValue(new HSSFRichTextString(fullTimeFmt.format((Date)v)));//TODO 权益之计
}else if(v instanceof oracle.sql.TIMESTAMP){
oracle.sql.TIMESTAMP vx = (oracle.sql.TIMESTAMP)v;
try {
cell.setCellValue(new HSSFRichTextString(fullTimeFmt.format(vx.timestampValue())));
} catch (SQLException e) {
throw new RuntimeException(e.getMessage(),e);
}
}else if(v.getClass() == String.class){
String cellStr = (String)v;
if( cellStr.length() >= 32766 ){
cellStr = cellStr.substring(0, 32765);
if(log.isWarnEnabled()){
log.warn("str has been substring(0, 32765) for cell ("+sheetNo+","+rowNum+","+colNum+")");
}
}
cell.setCellValue(new HSSFRichTextString( cellStr ) );
}else{
cell.setCellValue(new HSSFRichTextString(v.toString()));
}
return cell;
}

/**
* 根据指定行列和sheet获取单元。
* 
* @param rowNum
* @param cellNum
* @param sheetNo
* @return
*/
public HSSFCell getCell(int colNum,int rowNum,int sheetNo){
HSSFRow row = getRow(rowNum,sheetNo);
HSSFCell cell = row.getCell(colNum);
if(cell == null)cell = row.createCell(colNum);
return cell;
}
public HSSFCell getCell(String colNumStr, int rowNum, int sheetNo){
int colNum = cellNumStr2Int(colNumStr);
return getCell(colNum,rowNum,sheetNo);
}
public HSSFCell getCell(String cellPositionStr,int sheetNo){
Point p = new Point(cellPositionStr);
return getCell(p.col,p.row,sheetNo);
}
public HSSFSheet getSheetAt(int num){
return wb.getSheetAt(num);
}
/**
* 合并。
* @param sheetNum
* @param firstRow
* @param lastRow
* @param firstCol
* @param lastCol
*/
public void addMergedRegion(int sheetNum, int firstRow, int lastRow, int firstCol, int lastCol ){
HSSFSheet sheet = getSheetAt(sheetNum);
sheet.addMergedRegion(new CellRangeAddress(firstRow, lastRow, firstCol, lastCol));//指定合并区域
}
/**
* 获取某一行。
* 
* @param rowNum
* @param sheetNo
* @return
*/
public HSSFRow getRow(int rowNum,int sheetNo){
HSSFSheet sheet = null;
if(sheetNo >= wb.getNumberOfSheets()){
sheet = wb.createSheet("sheet-"+sheetNo);
}else{
sheet = wb.getSheetAt(sheetNo);
}
HSSFRow row = sheet.getRow(rowNum);
if(row == null)
row = sheet.createRow(rowNum);
return row;
}
/**
* 将列的名称转换为数字。
* 
* @param cellNumStr
* @return
*/
private static int cellNumStr2Int(String cellNumStr){
cellNumStr = cellNumStr.toLowerCase();
int cellNum = 0;
char[] chars = cellNumStr.toCharArray();
int j = 0;
for(int i = chars.length-1; i >=0 ; i--){
cellNum += (chars[i]-'a'+1)*Math.pow(26, j);
j++;
}
return cellNum-1;
}
public static String cellNumIntToStr(int colNum){
String colName = "";
// for(int i=0;i<colNum/26+1;i++){
// char c = (char)(colNum%26+'a'-i);
// colName = c + colName;
// colNum = colNum/26;
// }
//colNum++;
do{
char c = (char)(colNum%26+'A');
colName = c + colName;
colNum = colNum/26-1;
}while(colNum >= 0);
return colName;
}
/**
* 将excel写入到某个输出流中。
* 
* @param out
*/
public void write(OutputStream out){
try {
wb.write(out);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public void save(String filePath){
try {
OutputStream out = new FileOutputStream(new File(filePath));
write(out);
out.flush();
out.close();
} catch (FileNotFoundException e) {
throw new RuntimeException(e.getMessage(),e);
} catch (IOException e) {
throw new RuntimeException(e.getMessage(),e);
}
}
/**
* 获取某个单元格的值，并做一定的类型判断。
* 
* @param cell
* @return
*/
public Object getCellValue(HSSFCell cell){
Object value = null;
if(cell != null){
int cellType = cell.getCellType();
HSSFCellStyle style = cell.getCellStyle();
short format = style.getDataFormat();
switch(cellType){
case HSSFCell.CELL_TYPE_NUMERIC:
double numTxt =  cell.getNumericCellValue();
if(format == 22 || format == 14)value = HSSFDateUtil.getJavaDate(numTxt);
else value = numTxt;
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
boolean booleanTxt =  cell.getBooleanCellValue();
value = booleanTxt;
break;
case HSSFCell.CELL_TYPE_BLANK:
value = null;
break;
case HSSFCell.CELL_TYPE_FORMULA:
HSSFFormulaEvaluator eval=new HSSFFormulaEvaluator((HSSFWorkbook) wb);
eval.evaluateInCell(cell);
value = getCellValue(cell);
break;
case HSSFCell.CELL_TYPE_STRING:
HSSFRichTextString rtxt = cell.getRichStringCellValue();
if(rtxt == null){
break;
}
String txt = rtxt.getString();
value = txt; 
break;
default:
//System.out.println(cell.getColumnIndex()+" col cellType="+cellType);
}
}
return value;

}
public static interface CellCallback{
public void handler(HSSFCell cell);
}
/**
* 遍历所有的单元格。
* @param callback
* @param sheetNo
*/
public void iterator(CellCallback callback,int sheetNo){
   HSSFSheet sheet = wb.getSheetAt(sheetNo);
   if(sheet == null)return;
   int firstRowNum = sheet.getFirstRowNum();
   int lastRowNum = sheet.getLastRowNum();
   for (int i = firstRowNum; i <= lastRowNum; i++) {
    HSSFRow row = sheet.getRow(i);
    if(row == null)continue;
    for (int j = row.getFirstCellNum(); j < row.getLastCellNum(); j++) {
    HSSFCell cell = row.getCell(j);
    callback.handler(cell);
}
}
}


/**
* 读取某个excel，然后将其转化为List的List。
* 
* @param source
* @return
* @throws FileNotFoundException
* @throws IOException
*/
public List<List> excelToListList(int sheetNo){
//首先是讲excel的数据读入，然后根据导入到的数据库的结构和excel的结构来决定如何处理。

   HSSFSheet sheet = wb.getSheetAt(sheetNo);
   int firstRowNum = sheet.getFirstRowNum();
   int lastRowNum = sheet.getLastRowNum();
   List rows = new ArrayList();
   for (int i = firstRowNum; i <= lastRowNum; i++) {
    HSSFRow row = sheet.getRow(i);
    List cellList = new ArrayList();
    for (int j = row.getFirstCellNum(); j < row.getLastCellNum(); j++) {
    Object value = null;
    HSSFCell cell = row.getCell(j);
    value = getCellValue(cell);


    cellList.add(value);
   
}
    rows.add(cellList);
}
   return rows;
}
/**把excel转换成List<Map>格式
* @param sheetNo 需要转换的数据所在的sheet次序号(0,1,2...n)
* @return
*/
public List<Map> excelToMapList(int sheetNo)
 {
   HSSFSheet sheet = this.wb.getSheetAt(sheetNo);
   int firstRowNum = sheet.getFirstRowNum();
   return excelToMapList(sheetNo, firstRowNum, firstRowNum + 1);
 }


 /**把excel转换成List<Map>格式
* @param sheetNo需要转换的数据所在的sheet次序号(0,1,2...n)
* @param keyRowNo 作为key的行号 （0,1,2...n）
* @param dataStartRowNo第一行数据的行号 （1,2...n）
* @return
*/
public List<Map> excelToMapList(int sheetNo, int keyRowNo, int dataStartRowNo)
 {
   return excelToMapList( sheetNo,  keyRowNo, keyRowNo,  dataStartRowNo);
 }
/**
* 标题从多行进行合并得到。
* @param sheetNo
* @param keyRowNoFrom
* @param keyRowNoTo
* @param dataStartRowNo
* @return
*/
public List<Map> excelToMapList(int sheetNo, int keyRowNoFrom, int keyRowNoTo, int dataStartRowNo)
 {
   HSSFSheet sheet = this.wb.getSheetAt(sheetNo);
   List rowMapList = new ArrayList();
   String[] keyList = new String[200];
   for (int i = keyRowNoFrom; i <=keyRowNoTo ; i++) {
    HSSFRow mapKeyRow = sheet.getRow(i);
    String lstKey = null;
    for (int j = mapKeyRow.getFirstCellNum(); j < mapKeyRow.getLastCellNum(); j++) {
    HSSFCell col = mapKeyRow.getCell(j);
    String key = col.getRichStringCellValue().getString();
    String keyx  = keyList[j];
    if(key == null){
    key = keyx;
    }else if(keyx != null)key = keyx+key;
   
    if(key == null || "".equals(key)){
    key = lstKey;
    }
    lstKey = key;
   
    keyList[j] = key;
}
}
   int lastRowNum = sheet.getLastRowNum();
   for (int i = dataStartRowNo; i <= lastRowNum; ++i) {
     HSSFRow dataRow = sheet.getRow(i);
     if (dataRow == null) continue;
     Map rowMap = new HashMap();
     for (int j = dataRow.getFirstCellNum(); j < dataRow.getLastCellNum(); ++j) {
       String key = keyList[j];
       if(key == null || key.equals("")){
        continue;
       }
       Object value = getCellValue(dataRow.getCell(j));
       rowMap.put(key, value);
     }
     rowMapList.add(rowMap);
   }
   return rowMapList;
 }
public void mapListToExcel(Excel excel,List<Map> rs, Iterator it){

}
/**
* 复制srcRowNum，然后在targetRowNum处添加一行。
* @param srcRowNum
* @return
*/
public HSSFRow createRow(int srcRowNum){
HSSFSheet sheet = wb.getSheetAt(0);
int targetRowNum = sheet.getLastRowNum();
return createRow(sheet,sheet,srcRowNum, targetRowNum);
}
/**
* 复制srcRowNum，然后在targetRowNum处添加一行。
* @param srcRowNum
* @param targetRowNum
* @return
*/
public HSSFRow createRow(int srcRowNum, int targetRowNum){
HSSFSheet sheet = wb.getSheetAt(0);
return createRow(sheet,sheet,srcRowNum, targetRowNum);
}
/**
* 复制srcRowNum，然后在targetRowNum处添加一行。
* @param sheet
* @param srcRowNum
* @param targetRowNum
* @return
*/
public HSSFRow createRow(HSSFSheet srcSheet,HSSFSheet targetSheet,int srcRowNum, int targetRowNum){
HSSFRow srcRow = srcSheet.getRow(srcRowNum);
HSSFRow newRow = targetSheet.createRow(targetRowNum);
newRow.setHeight(srcRow.getHeight());
int i = 0;
for (Iterator<Cell> cit = srcRow.cellIterator(); cit.hasNext(); ) {
Cell hssfCell = cit.next();
//HSSFCell中的一些属性转移到Cell中
HSSFCell cell = newRow.createCell(i++);
CellStyle s = hssfCell.getCellStyle();
cell.setCellStyle(hssfCell.getCellStyle());
}
return newRow;
}


public void deleteRow(int rowNum){
deleteRow(0,rowNum);
}
public void deleteRow(int sheetNo,int rowNum){
HSSFSheet sheet = wb.getSheetAt(sheetNo);
sheet.shiftRows(rowNum, sheet.getLastRowNum(), -1);
}
/**
* 拷贝行粘帖到指定位置。
* @param sheet
* @param srcRow
* @param rowNum
* @return
*/
public HSSFRow copyAndInsertRow(HSSFSheet sheet, HSSFRow srcRow,int targetRowNum){
sheet.shiftRows(targetRowNum, sheet.getLastRowNum(), 1);
HSSFRow newRow = sheet.getRow(targetRowNum);
newRow.setHeight(srcRow.getHeight());
int j = 0;
for (Iterator<Cell> cit = srcRow.cellIterator(); cit.hasNext(); ) {
Cell hssfCell = cit.next();
//HSSFCell中的一些属性转移到Cell中
HSSFCell cell = newRow.createCell(j++);
cell.setCellStyle(hssfCell.getCellStyle());
}
for( int i = 0; i < sheet.getNumMergedRegions(); i++ ){
CellRangeAddress s = null;s.getFirstColumn();
CellRangeAddress region = sheet.getMergedRegion(i);
if(region.getFirstRow() == srcRow.getRowNum()
&& region.getLastRow() == region.getFirstRow()
){
sheet.addMergedRegion(new  CellRangeAddress(targetRowNum,region.getFirstColumn(),
targetRowNum,region.getLastColumn()));
}
}
return newRow;
}
public HSSFRow copyAndInsertRow(int sheetNo,int fromRowNum,int targetRowNum){
HSSFSheet sheet = wb.getSheetAt(sheetNo);
HSSFRow srcRow = sheet.getRow(fromRowNum);
return copyAndInsertRow( sheet,  srcRow, targetRowNum);
}
public HSSFRow copyAndInsertRow(int fromRowNum,int targetRowNum){
return copyAndInsertRow(0, fromRowNum, targetRowNum);
}
public HSSFWorkbook getWb() {
return wb;
}
public void setWb(HSSFWorkbook wb) {
this.wb = wb;
}
public void setForceFormulaRecalculation(boolean v){
wb.getSheetAt(0).setForceFormulaRecalculation(v);
}
public static void main(String[] args) throws ParseException, FileNotFoundException, IOException {


//if(true)return;
Excel excel = new Excel("f:/antennaxxx.xls");//如果你用的是2007的话，保存时选择97~2003的格式
List<Map> rs = excel.excelToMapList(0);
for (Map map : rs) {
String log = (String)map.get("F_OPERATION_LOG");
System.out.println("Excel.main()"+log);
}



}
}