android之csv导出

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.List;

import android.os.Environment;
/**
* CSV操作(导出和导入)
*
*/
public class CSVUtil {
public static void testExportCsv(){
List<String> dataList=new ArrayList<String>();
dataList.add("1,黄忠,男");
dataList.add("2,汪倩,女");
dataList.add("3,黄球,女");
dataList.add("4,黄燕,女");
String path=Environment.getExternalStorageDirectory().getPath()+"/students.csv";
exportCsv(path, dataList);
}
/**
* 导出
*
* @param file csv文件(路径+文件名)，csv文件不存在会自动创建
* @param dataList 数据
* @return
*/
public static boolean exportCsv(String path, List<String> dataList){
File file =new File(path);
boolean isSucess=false;
FileOutputStream out=null;
OutputStreamWriter osw=null;
BufferedWriter bw=null;
try {
out = new FileOutputStream(file);
osw = new OutputStreamWriter(out);
bw =new BufferedWriter(osw);
if(dataList!=null && !dataList.isEmpty()){
for(String data : dataList){
bw.append(data).append("\r\n");
}
}
isSucess=true;
} catch (Exception e) {
isSucess=false;
}finally{
if(bw!=null){
try {
bw.close();
bw=null;
} catch (IOException e) {
e.printStackTrace();
}
}
if(osw!=null){
try {
osw.close();
osw=null;
} catch (IOException e) {
e.printStackTrace();
}
}
if(out!=null){
try {
out.close();
out=null;
} catch (IOException e) {
e.printStackTrace();
}
}
}
return isSucess;
}

/**
* 导入
*
* @param file csv文件(路径+文件)
* @return
*/
public static List<String> importCsv(File file){
List<String> dataList=new ArrayList<String>();
BufferedReader br=null;
try {
br = new BufferedReader(new FileReader(file));
String line = "";
while ((line = br.readLine()) != null) {
dataList.add(line);
}
}catch (Exception e) {
}finally{
if(br!=null){
try {
br.close();
br=null;
} catch (IOException e) {
e.printStackTrace();
}
}
}

return dataList;
}
}