POI操做EXCEL之導出Excel（設置有效性，下拉列表引用）

時間 2019-12-07

原文原文鏈接

本人使用的是poi-bin-3.10-FINAL-20140208.zip 版本的poi
如下是程序關鍵代碼：java

//須要引用的類

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.apache.poi.hssf.usermodel.DVConstraint;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFDataValidation;
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.ss.usermodel.DataValidation;
import org.apache.poi.ss.usermodel.DataValidationConstraint;
import org.apache.poi.ss.usermodel.DataValidationHelper;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.util.CellRangeAddressList;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

//主方法

public static String writeExcel(String str,List mList,String path) throws IOException {
Date dt = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
String temp_str = "";
temp_str = sdf.format(dt);
//System.out.println(InExcel.class.getClassLoader().getResource("/").getPath());
// String path = request.getSession().getServletContext().getRealPath("/");
//System.out.println(path+"00000000000000");
String pathname=path+"upload\\"+str+temp_str+".xls";
String pathname1="upload\\"+str+temp_str+".xls";
File file=new File(pathname);
String fileName = file.getName();
String extension = fileName.lastIndexOf(".") == -1 ? "" : fileName
.substring(fileName.lastIndexOf(".") + 1);

//判斷文件類型

if ("xls".equals(extension)) {
WriteIn(file,"xls");
String[][] data=check(str);
write2003Excel(file.getPath(),mList,data,str);
return pathname1;

} else if ("xlsx".equals(extension)) {
String[][] data=check(str);
// write2007Excel(file.getPath(),mList,data);

} else {

throw new IOException("不支持的文件類型");

}
return "error";

}

//寫入excel方法
         public static String WriteIn(File file,String extension) throws IOException{
             //2003xls文件建立模式
               FileOutputStream fileOut = new FileOutputStream(file.getAbsolutePath());
             if ("xls".equals(extension)) {
                HSSFWorkbook wb = new HSSFWorkbook();
                HSSFSheet sheet1 = wb.createSheet("Sheet1");
                HSSFSheet sheet2 = wb.createSheet("Sheet2");
                HSSFSheet sheet3 = wb.createSheet("Sheet3");
                wb.write(fileOut);
             }else if ("xlsx".equals(extension)){
                 //2007模式的寫法
                 XSSFWorkbook wb = new XSSFWorkbook();
                    XSSFSheet sheet1 = wb.createSheet("Sheet1");
                    XSSFSheet sheet2 = wb.createSheet("Sheet2");
                    XSSFSheet sheet3 = wb.createSheet("Sheet3");
                    wb.write(fileOut);
            }
                
                fileOut.close();
             return "success";
         }

/**
* 協查有效性和標題篩選
* @param str
* @return
*/
public static String[][] check(String str){
if("00201".equals(str)){
//標題 ： 姓名 性別 身份證號碼 死亡時間
String[] bzbt={"姓名","性別 ","身份證號碼","救助業務名稱","救助證號","救助金額","救助開始時間 ","救助結束時間"};
//有效性 ： 0-未知的性別,1-男性,2-女性,9-未說明的性別
String[] bzdata2={ "0-未知的性別","1-男性","2-女性","9-未說明的性別"};
//01-救災救濟,02-城市社會救助,03-雙擁、優撫、安置,04-社會事務與社會福利,05-慈善事業
String[] bzdata3={ "01-救災救濟","02-城市社會救助","03-雙擁、優撫、安置","04-社會事務與社會福利","05-慈善事業"};
//行有效性
String [] bzdatarow={"1","3"};
String[][] a ={bzbt,bzdata2,bzdata3,bzdatarow};
return a;
}

return null;

}

//下拉列表元素不少的狀況

private static HSSFDataValidation SetDataValidation(String strFormula,int firstRow,int firstCol,int endRow,int endCol)
{
//String formula = "Sheet2!$A$2:$A$59" ;// 表示Z列1-N行做爲下拉列表來源數據
// HSSFDataValidation dataValidation = new HSSFDataValidation((short) 1,
// (short) 1, (short) 300, (short) 1); //原順序爲 起始行 起始列 終止行 終止列
// dataValidation.setDataValidationType(HSSFDataValidation.DATA_TYPE_LIST);
// dataValidation.setFirstFormula(formula);
// dataValidation.setSecondFormula(null);
CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
// CellRangeAddressList regions = new CellRangeAddressList( firstRow,
// (short) 300, (short) 1, (short) 1);//add 新順序爲 起始行 終止行 起始列 終止列
DVConstraint constraint = DVConstraint.createFormulaListConstraint(strFormula);//add
HSSFDataValidation dataValidation = new HSSFDataValidation(regions,constraint);//add

dataValidation.createErrorBox("Error", "Error");
dataValidation.createPromptBox("", null);

return dataValidation;
}
//255之內的下拉
public static DataValidation setDataValidation(Sheet sheet,String[] textList, int firstRow, int endRow, int firstCol, int endCol) {

DataValidationHelper helper = sheet.getDataValidationHelper();
// 加載下拉列表內容
DataValidationConstraint constraint = helper.createExplicitListConstraint(textList);
// DVConstraint constraint = new DVConstraint();
constraint.setExplicitListValues(textList);

// 設置數據有效性加載在哪一個單元格上。
// 四個參數分別是：起始行、終止行、起始列、終止列
CellRangeAddressList regions = new CellRangeAddressList((short) firstRow, (short) endRow, (short) firstCol, (short) endCol);

// 數據有效性對象
DataValidation data_validation = helper.createValidation(constraint, regions);
//DataValidation data_validation = new DataValidation(regions, constraint);

return data_validation;
}

//write 2003Excel
         public static void write2003Excel(String filePath,List list,String[][] data,String str) {

            try {
                if(list.size()<=60000){
               //建立excel文件對象   

               HSSFWorkbook wb = new HSSFWorkbook(new FileInputStream(filePath));
                //建立一個張表   
               HSSFSheet sheet;
               //建立行對象
               HSSFRow row = null;

               //建立表格對象

               HSSFCell cell = null;
               
            
                           sheet = wb.getSheetAt(0);
                          
                         //   sheet.addValidationData(setDataValidation(sheet,data[1], 1,list.size(), 1, 1));
                            String[] num=data[data.length-1];
                            System.out.println(num.length);
                            if (data.length>1) {
                                 for(int i=0;i<num.length;i++){
                                        int rowdata=Integer.parseInt(num[i]);
                                        sheet.addValidationData(setDataValidation(sheet,data[i+1], 1,list.size(),rowdata , rowdata));
                                        System.out.println("我出現"+rowdata);
                                    }
                            }
                            if("00301".equals(str)){
                                 String strFormula = "Sheet2!$A$2:$A$59" ;
                                 sheet.addValidationData(SetDataValidation(strFormula, 1, 5, list.size(), 5));
                             }
                           
                       row=sheet.createRow(0);
                       for (int i = 0; i < data[0].length; i++) {
                           cell=row.createCell(i);
                           
                           cell.setCellValue(data[0][i]);
                    }
                       
                       //循環行
                       for (int i=1; i <=list.size(); i++) {
                          row = sheet.createRow(i);
                          //循環列
                          
                          for (int j=0; j<data[0].length; j++) {
                             cell = row.createCell(j);//建立單元格
                             String m=String.valueOf(list.get(i-1)).replace("[", "").replace("]", "");
                            String[] a=m.split(",");
                             cell.setCellValue(a[j]);//賦值
                           //  cell.setCellFormula("Sheet2!$A$2:$A$59");

                          }
                      }
                       //select Ahd010401,Ahd010405,Ahd010404,Ahd010409,Ahd010410,Ahd010406,Ahd010408,Ahd010416 from res_00301
                       if("00301".equals(str)){
                           String[] bzdata4={"民族","01-漢族","02-蒙古族","03-回族","04-藏族","05-維吾爾族","06-苗族","07-彝族","08-壯族","09-布依族","10-朝鮮族","11-滿族","12-侗族","13-瑤族","14-白族","15-土家族","16-哈尼族","17-哈薩克族","18-傣族","19-黎族","20-傈僳族","21-佤族","22-畲族","23-高山族","24-拉祜族","25-水族","26-東鄉族","27-納西族","28-景頗族","29-柯爾克孜族","30-土族","31-達斡爾族","32-仫佬族","33-羌族","34-布朗族","35-撒拉族","36-毛難族","37-仡佬族","38-錫伯族","39-阿昌族","40-普米族","41-塔吉克族","42-怒族","43-烏孜別克族","44-俄羅斯族","45-鄂溫克族","46-德昂族","47-保安族","48-裕固族","49-京族","50-塔塔爾族","51-獨龍族","52-鄂倫春族","53-赫哲族","54-門巴族","55-珞巴族","56-基諾族","98-外國血統","99-其餘"};
                           sheet=wb.getSheetAt(1);
                           for (int i = 0; i < bzdata4.length; i++) {
                            row=sheet.createRow(i);
                            cell=row.createCell(0);
                            cell.setCellValue(bzdata4[i]);
                        }
                       }  
           
               FileOutputStream out = new FileOutputStream(filePath);

               wb.write(out);

               out.close();
                 }else {
                     throw new IOException("超出excel的可寫範圍，可寫爲60000行");
                 }

            } catch (Exception e) {

               e.printStackTrace();

            }

         }