csv文件生成及删除目录下的所有文件

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.beanutils.BeanUtils;

/** 
 * 文件操作 
 * @author  
 * @version $Id: CSVUtils.java, v 0.1 
        2014年7月22日 下午2:19:59 Exp $ 
 */  
public class CSVUtils {  
  
    /** 
     * 生成为CVS文件  
     * @param exportData 
     *              源数据List 
     * @param map 
     *              csv文件的列表头map 
     * @param outPutPath 
     *              文件路径 
     * @param fileName 
     *              文件名称 
     * @return 
     */  
    @SuppressWarnings("rawtypes")  
    public static File createCSVFile(List exportData, LinkedHashMap map, String outPutPath,  
                                     String fileName) {  
        File csvFile = null;  
        BufferedWriter csvFileOutputStream = null;  
        try {  
            File file = new File(outPutPath);  
            if (!file.exists()) {  
                file.mkdir();  
            }  
            //定义文件名格式并创建  
            System.out.println("=="+fileName);
            csvFile = new File(outPutPath + fileName + ".csv");
            File parent = csvFile.getParentFile();
            if (parent != null && !parent.exists()) {
                parent.mkdirs();
            }
            csvFile.createNewFile();
            //csvFile = File.createTempFile(fileName, ".csv", new File(outPutPath)); 
            System.out.println("csvFile：" + csvFile);  
            // UTF-8使正确读取分隔符","    
            csvFileOutputStream = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(  
                    csvFile), "GBK"), 1024);
            System.out.println("csvFileOutputStream：" + csvFileOutputStream);  
            // 写入文件头部    
            for (Iterator propertyIterator = map.entrySet().iterator(); propertyIterator.hasNext();) {  
                java.util.Map.Entry propertyEntry = (java.util.Map.Entry) propertyIterator.next();  
                csvFileOutputStream.write((String) propertyEntry.getValue() != null ? new String(  
                    ((String) propertyEntry.getValue()).getBytes("GBK"), "GBK") : "");  
                if (propertyIterator.hasNext()) {  
                    csvFileOutputStream.write(",");  
                }  
                System.out.println(new String(((String) propertyEntry.getValue()).getBytes("GBK"),  
                    "GBK"));  
            }  
            csvFileOutputStream.write("\r\n");  
            // 写入文件内容    
            for (Iterator iterator = exportData.iterator(); iterator.hasNext();) {  
                Object row = (Object) iterator.next();  
                for (Iterator propertyIterator = map.entrySet().iterator(); propertyIterator  
                    .hasNext();) {  
                    java.util.Map.Entry propertyEntry = (java.util.Map.Entry) propertyIterator  
                        .next();  
                    csvFileOutputStream.write((String) BeanUtils.getProperty(row,  
                        ((String) propertyEntry.getKey()) != null? (String) propertyEntry.getKey()  
                            : ""));  
                    if (propertyIterator.hasNext()) {  
                        csvFileOutputStream.write(",");  
                    }  
                }  
                if (iterator.hasNext()) {  
                    csvFileOutputStream.write("\r\n");  
                }  
            }  
            csvFileOutputStream.flush();  
        } catch (Exception e) {  
            e.printStackTrace();  
        } finally {  
            try {  
                csvFileOutputStream.close();  
            } catch (IOException e) {  
                e.printStackTrace();  
            }  
        }  
        return csvFile;  
    }  
  
    public static boolean delAllFile(String path) {
        boolean flag = false;
        File file = new File(path);
        if (!file.exists()) {
          return flag;
        }
        if (!file.isDirectory()) {
          return flag;
        }
        String[] tempList = file.list();
        File temp = null;
        for (int i = 0; i < tempList.length; i++) {
           if (path.endsWith(File.separator)) {
              temp = new File(path + tempList[i]);
           } else {
               temp = new File(path + File.separator + tempList[i]);
           }
           if (temp.isFile()) {
              temp.delete();
           }
           if (temp.isDirectory()) {
              delAllFile(path + "/" + tempList[i]);//先删除文件夹里面的文件
             // delFolder(path + "/" + tempList[i]);//再删除空文件夹
              flag = true;
           }
        }
        return flag;
      }

  
 
    /** 
     * 测试数据 
     * @param args 
     */  
    @SuppressWarnings("unchecked")
	public static void main(String[] args) {  
    	CSVUtils.delAllFile("F:\\download\\aa");//删除目录下的所有文件
        System.out.println("deleted");
        @SuppressWarnings("rawtypes")
		List exportData = new ArrayList<Map>();  
        @SuppressWarnings("rawtypes")
		Map row1 = new LinkedHashMap<String, String>();  
        row1.put("1", "流水号");  
        row1.put("2", "外部流水号(账单号) ");  
        row1.put("3", "支付时间");  
        row1.put("4", "金额");  
        row1.put("5", "备注");  
        row1.put("6", "勾兑结果"); 
        row1.put("7", "");
        row1.put("8", "");
        row1.put("9", "");
        row1.put("10", "");
        row1.put("11", "");
        row1.put("12", "");
        exportData.add(row1);  
        row1 = new LinkedHashMap<String, String>();  
        row1.put("1", "20130411000052060000000200023031");  
        row1.put("2", "1000030001");  
        row1.put("3", "2013/04/11 20:17");  
        row1.put("4", "10000");  
        row1.put("5", ",xxx");  
        row1.put("6", "success"); 
        row1.put("7", "");
        row1.put("8", "");
        row1.put("9", "");
        row1.put("10", "");
        row1.put("11", "");
        row1.put("12", "");
        exportData.add(row1);  
        @SuppressWarnings("rawtypes")
		LinkedHashMap map = new LinkedHashMap();  
        map.put("1", "总数");  
        map.put("2", "11");  
        map.put("3", "总金额");  
        map.put("4", "50000");  
        map.put("5", "成功笔数");  
        map.put("6", "4"); 
        map.put("7", "成功金额"); 
        map.put("8", "40000"); 
        map.put("9", "失败笔数"); 
        map.put("10", "1"); 
        map.put("11", "失败金额"); 
        map.put("12", "10000"); 
  
        String path = "F:\\download\\";  
        String fileName = "test";  
        File file = CSVUtils.createCSVFile(exportData, map, path, fileName);  
        String fileName2 = file.getName();  
        System.out.println("文件名称：" + fileName2);  
    }  
}