JAvaエクスポートcsvファイル
4086 ワード
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
public class CSVUtil {
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 ","
csvFileOutputStream = new BufferedWriter(new OutputStreamWriter(
new FileOutputStream(csvFile), "GB2312"), 1024);
//
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();
//
for (Iterator iterator = exportData.iterator(); iterator.hasNext();) {
// Object row = (Object) iterator.next();
LinkedHashMap row = (LinkedHashMap) iterator.next();
System.out.println(row);
for (Iterator propertyIterator = row.entrySet().iterator(); propertyIterator.hasNext();) {
java.util.Map.Entry propertyEntry = (java.util.Map.Entry) propertyIterator.next();
// System.out.println( BeanUtils.getProperty(row, propertyEntry.getKey().toString()));
csvFileOutputStream.write("\""
+ propertyEntry.getValue().toString() + "\"");
if (propertyIterator.hasNext()) {
csvFileOutputStream.write(",");
}
}
if (iterator.hasNext()) {
csvFileOutputStream.newLine();
}
}
csvFileOutputStream.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
csvFileOutputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return csvFile;
}
public static void main(String[] args) {
List exportData = new ArrayList