Java-list<Object>形式客户端保存为excel文件

package com.HeiBeiEDU.test2;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.lang.reflect.Method;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.swing.JOptionPane;

import org.apache.poi.hssf.usermodel.HSSFCell;
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;

public class ListToExcel {

    /**
     *
     * @param name
     *            Excel保存的主题名
     * @param data
     *            里边有Map和List Map存放字段对应关系(ziDuan,字段的第一个字符是序号)
     *            List存放对象数据(listData)
     * @return [0]是fileName [1]是filePath
     */
    public static String[] objListToExcel(String name, Map data, String path) {
        Map<String, String> ziDuan = (Map<String, String>) data.get("ziDuan");
        List listData = (List) data.get("listData");
        Object[] keys = ziDuan.keySet().toArray();
        String[] ziDuanKeys = new String[keys.length];
        for (int k = 0; k < keys.length; k++) {
            String temp = keys[k].toString();
            int xuHao = Integer.valueOf(temp.substring(0, 1));
            ziDuanKeys[xuHao] = temp.substring(1);
        }
        try {
            File newFile = new File(path);

            if (newFile.exists()) {
                int ii = JOptionPane.showConfirmDialog(null, "文件已存在，你确定要覆盖吗？", "文件已存在", JOptionPane.YES_NO_OPTION);
                if (ii == 0) {// 确定
                    newFile.createNewFile();
                    System.out.println("创建文件成功：" + path);
                    HSSFWorkbook wb = new HSSFWorkbook();
                    HSSFSheet sheet = wb.createSheet();

                    for (int i = 0; i < listData.size(); i++) {
                        HSSFRow row = sheet.createRow(i);
                        Object obj = listData.get(i);
                        for (int j = 0; j < ziDuanKeys.length; j++) {
                            HSSFCell cell = row.createCell(j);
                            if (i == 0) {
                                sheet.setColumnWidth(j, 6000);
                                cell.setCellValue(new HSSFRichTextString(ziDuan.get(j + ziDuanKeys[j])));
                            } else {
                                String ziDuanName = (String) ziDuanKeys[j];
                                System.out.println(ziDuanName);
                                ziDuanName = ziDuanName.replaceFirst(ziDuanName.substring(0, 1),
                                        ziDuanName.substring(0, 1).toUpperCase());
                                ziDuanName = "get" + ziDuanName;
                                Class clazz = Class.forName(obj.getClass().getName());
                                Method[] methods = clazz.getMethods();
                                Pattern pattern = Pattern.compile(ziDuanName);
                                Matcher mat = null;
                                for (Method m : methods) {
                                    mat = pattern.matcher(m.getName());
                                    if (mat.find()) {
                                        Object shuXing = m.invoke(obj, null);
                                        if (shuXing != null) {
                                            cell.setCellValue(shuXing.toString());// 这里可以做数据格式处理
                                        } else {
                                            cell.setCellValue("");
                                        }
                                        break;
                                    }
                                }
                            }
                        }
                    }
                    OutputStream out = new FileOutputStream(path);
                    wb.write(out);// 写入File
                    out.flush();
                    out.close();
                }
            } else {
                newFile.createNewFile();
                System.out.println("创建文件成功：" + path);
                HSSFWorkbook wb = new HSSFWorkbook();
                HSSFSheet sheet = wb.createSheet();

                for (int i = 0; i < listData.size(); i++) {
                    HSSFRow row = sheet.createRow(i);
                    Object obj = listData.get(i);
                    for (int j = 0; j < ziDuanKeys.length; j++) {
                        HSSFCell cell = row.createCell(j);
                        if (i == 0) {
                            sheet.setColumnWidth(j, 6000);
                            cell.setCellValue(new HSSFRichTextString(ziDuan.get(j + ziDuanKeys[j])));
                        } else {
                            String ziDuanName = (String) ziDuanKeys[j];
                            System.out.println(ziDuanName);
                            ziDuanName = ziDuanName.replaceFirst(ziDuanName.substring(0, 1),
                                    ziDuanName.substring(0, 1).toUpperCase());
                            ziDuanName = "get" + ziDuanName;
                            Class clazz = Class.forName(obj.getClass().getName());
                            Method[] methods = clazz.getMethods();
                            Pattern pattern = Pattern.compile(ziDuanName);
                            Matcher mat = null;
                            for (Method m : methods) {
                                mat = pattern.matcher(m.getName());
                                if (mat.find()) {
                                    Object shuXing = m.invoke(obj, null);
                                    if (shuXing != null) {
                                        cell.setCellValue(shuXing.toString());// 这里可以做数据格式处理
                                    } else {
                                        cell.setCellValue("");
                                    }
                                    break;
                                }
                            }
                        }
                    }
                }
                OutputStream out = new FileOutputStream(path);
                wb.write(out);// 写入File
                out.flush();
                out.close();
            }

            return null;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

}

               测试代码为：

try {
                            List listData = new ArrayList();   //---------此处应遍历真正的list，但是现在没有办法测试webservice，所以先写测试代码-----------------------------
                            for (int i = 0; i < 6; i++) {
                                CheckPerson person = new CheckPerson();
                                person.setDHHM("145647583486");
                                person.setGMSFHM("13546876874786643");
                                person.setMZ("MZ");
                                person.setXM("XM");
                                person.setXZ("XZ");

                                listData.add(person);
                            }

                            Map<String, String> ziDuan = new HashMap<String, String>();
                            ziDuan.put("0DHHM", "电话号码");//属性前边的数字代表字段的先后顺序。
                            ziDuan.put("1MZ", "暂定");//最好将源码中判别顺序的格式改为"序号-字段"。
                            ziDuan.put("2XM", "姓名");
                            ziDuan.put("3XZ", "住址");
                            Map data = new HashMap();
                            data.put("listData", listData);
                            data.put("ziDuan", ziDuan);
                            ListToExcel.objListToExcel("爆破作业人员查询结果名单", data,path);
                     }catch(Exception e3){
                         e3.printStackTrace();
                     }