Java 寫 CSV文件

package com.ericsson.jigsaw.test.management.quality.util;

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.log4j.Logger;


public class CsvUtils {
    private static Logger logger = Logger.getLogger(CsvUtils.class);

    public static File createCSVFile(List exportData, LinkedHashMap rowMapper,
            String outPutPath, String filename) {
    	
        File csvFile = null;
        BufferedWriter csvFileOutputStream = null;
        try {
            csvFile = new File(outPutPath + filename + ".csv");
            // csvFile.getParentFile().mkdir();
            File parent = csvFile.getParentFile();
            if (parent != null && !parent.exists()) {
                parent.mkdirs();
            }
            csvFile.createNewFile();

            // GB2312浣挎紜邋殮","
            csvFileOutputStream = new BufferedWriter(new OutputStreamWriter(
                    new FileOutputStream(csvFile), "GB2312"), 1024);
            // 邋ユ浠跺ご楱
            for (Iterator propertyIterator = rowMapper.entrySet().iterator(); propertyIterator
                    .hasNext();) {
                java.util.Map.Entry propertyEntry = (java.util.Map.Entry) propertyIterator
                        .next();
                csvFileOutputStream.write("\""
                        + propertyEntry.getValue().toString() + "\"");
                if (propertyIterator.hasNext()) {
                    csvFileOutputStream.write(",");
                }
            }
            csvFileOutputStream.newLine();
            // 邋ユ浠跺瀹?
            for (Iterator iterator = exportData.iterator(); iterator.hasNext();) {
                Map row = (Map) iterator.next();
                for (Iterator propertyIterator = rowMapper.entrySet()
                        .iterator(); propertyIterator.hasNext();) {
                    java.util.Map.Entry propertyEntry = (java.util.Map.Entry) propertyIterator
                            .next();
                    csvFileOutputStream.write("\""
                    		+ row.get(propertyEntry.getKey().toString())
                    		+"\"");
//                            + BeanUtils.getProperty(row,
//                                    propertyEntry.getKey().toString())
//                    		+propertyEntry.getValue().toString() + "\"");
                    if (propertyIterator.hasNext()) {
                        csvFileOutputStream.write(",");
                    }
                }
                if (iterator.hasNext()) {
                    csvFileOutputStream.newLine();
                }
            }
            csvFileOutputStream.flush();
        } catch (Exception e) {
            logger.error("Exception", e);
        } finally {
            try {
                csvFileOutputStream.close();
            } catch (IOException e) {
                logger.error("IOException", e);
            }
        }
        return csvFile;
    }

    public static void main(String[] args) {
        List exportData = new ArrayList<Map>();
        Map row1 = new LinkedHashMap<String, String>();
        row1.put("1", "11");
        row1.put("2", "12");
        row1.put("3", "13");
        row1.put("4", "14");
        exportData.add(row1);
        row1 = new LinkedHashMap<String, String>();
        row1.put("1", "21");
        row1.put("2", "22");
        row1.put("3", "23");
        row1.put("4", "24");
        exportData.add(row1);
        List propertyNames = new ArrayList();
        LinkedHashMap map = new LinkedHashMap();
        map.put("1", "Row1");
        map.put("2", "Row2");
        map.put("3", "Row3");
        map.put("4", "Row4");
        CsvUtils.createCSVFile(exportData, map, "./", "tmp");
    	
    	
    }
}