POI操作EXCEL之导出Excel（设置有效性，下拉列表引用）

本人使用的是poi-bin-3.10-FINAL-20140208.zip 版本的poi
以下是程序关键代码：

 

//需要引用的类



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);



//判断文件类型



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("不支持的文件类型");



}

return "error";



}

//写入excel方法

         public static String WriteIn(File file,String extension) throws IOException{

             //2003xls文件创建模式

               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模式的写法

                 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";

         }

/**

* 协查有效性和标题筛选

* @param str

* @return

*/

public static String[][] check(String str){

if("00201".equals(str)){

//标题 ： 姓名 性别 身份证号码 死亡时间

String[] bzbt={"姓名","性别 ","身份证号码","救助业务名称","救助证号","救助金额","救助开始时间 ","救助结束时间"};

//有效性 ： 0-未知的性别,1-男性,2-女性,9-未说明的性别

String[] bzdata2={ "0-未知的性别","1-男性","2-女性","9-未说明的性别"};

//01-救灾救济,02-城市社会救助,03-双拥、优抚、安置,04-社会事务与社会福利,05-慈善事业

String[] bzdata3={ "01-救灾救济","02-城市社会救助","03-双拥、优抚、安置","04-社会事务与社会福利","05-慈善事业"};

//行有效性

String [] bzdatarow={"1","3"};

String[][] a ={bzbt,bzdata2,bzdata3,bzdatarow};

return a;

}



return null;



}

//下拉列表元素很多的情况



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行作为下拉列表来源数据

// HSSFDataValidation dataValidation = new HSSFDataValidation((short) 1,

// (short) 1, (short) 300, (short) 1); //原顺序为 起始行 起始列 终止行 终止列

// 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 新顺序为 起始行 终止行 起始列 终止列

DVConstraint constraint = DVConstraint.createFormulaListConstraint(strFormula);//add

HSSFDataValidation dataValidation = new HSSFDataValidation(regions,constraint);//add



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

dataValidation.createPromptBox("", null);



return dataValidation;

}

//255以内的下拉

public static DataValidation setDataValidation(Sheet sheet,String[] textList, int firstRow, int endRow, int firstCol, int endCol) {



DataValidationHelper helper = sheet.getDataValidationHelper();

// 加载下拉列表内容

DataValidationConstraint constraint = helper.createExplicitListConstraint(textList);

// DVConstraint constraint = new DVConstraint();

constraint.setExplicitListValues(textList);



// 设置数据有效性加载在哪个单元格上。

// 四个参数分别是：起始行、终止行、起始列、终止列

CellRangeAddressList regions = new CellRangeAddressList((short) firstRow, (short) endRow, (short) firstCol, (short) endCol);



// 数据有效性对象

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){

               //创建excel文件对象   



               HSSFWorkbook wb = new HSSFWorkbook(new FileInputStream(filePath));

                //创建一个张表   

               HSSFSheet sheet;

               //创建行对象

               HSSFRow row = null;



               //创建表格对象



               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("我出现"+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]);

                    }

                       

                       //循环行

                       for (int i=1; i <=list.size(); i++) {

                          row = sheet.createRow(i);

                          //循环列

                          

                          for (int j=0; j<data[0].length; j++) {

                             cell = row.createCell(j);//创建单元格

                             String m=String.valueOf(list.get(i-1)).replace("[", "").replace("]", "");

                            String[] a=m.split(",");

                             cell.setCellValue(a[j]);//赋值

                           //  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-汉族","02-蒙古族","03-回族","04-藏族","05-维吾尔族","06-苗族","07-彝族","08-壮族","09-布依族","10-朝鲜族","11-满族","12-侗族","13-瑶族","14-白族","15-土家族","16-哈尼族","17-哈萨克族","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-东乡族","27-纳西族","28-景颇族","29-柯尔克孜族","30-土族","31-达斡尔族","32-仫佬族","33-羌族","34-布朗族","35-撒拉族","36-毛难族","37-仡佬族","38-锡伯族","39-阿昌族","40-普米族","41-塔吉克族","42-怒族","43-乌孜别克族","44-俄罗斯族","45-鄂温克族","46-德昂族","47-保安族","48-裕固族","49-京族","50-塔塔尔族","51-独龙族","52-鄂伦春族","53-赫哲族","54-门巴族","55-珞巴族","56-基诺族","98-外国血统","99-其他"};

                           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的可写范围，可写为60000行");

                 }



            } catch (Exception e) {



               e.printStackTrace();



            }



         }