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假如E:/phsftp/evdokey目录下有个evdokey_201103221556.txt文件，
现在对evdokey_201103221556.txt文件进行写入或读取操作，并解决写入或读取出现的乱码问题。
文件内容如：
zhangsan, 23 ,福建
lisi, 30 ,上海
wangwu, 43 ,北京
laolin, 21 ,重庆
ximenqing, 67 ,贵州
代码如下：
/**
* 一行一行读取文件，适合字符读取，若读取中文字符时会出现乱码
*
* 流的关闭顺序：先打开的后关，后打开的先关，
* 否则有可能出现java.io.IOException: Stream closed异常
*
* @throws IOException
*/
@Test
public void readFile01() throws IOException {
FileReader fr = new FileReader( " E:/phsftp/evdokey/evdokey_201103221556.txt " );
BufferedReader br = new BufferedReader(fr);
String line = "" ;
String[] arrs = null ;
while ((line = br.readLine()) != null ) {
arrs = line.split( " , " );
System.out.println(arrs[ 0 ] + " : " + arrs[ 1 ] + " : " + arrs[ 2 ]);
}
br.close();
fr.close();
}
/**
* 一行一行读取文件，解决读取中文字符时出现乱码
*
* 流的关闭顺序：先打开的后关，后打开的先关，
* 否则有可能出现java.io.IOException: Stream closed异常
*
* @throws IOException
*/
@Test
public void readFile02() throws IOException {
FileInputStream fis = new FileInputStream( " E:/phsftp/evdokey/evdokey_201103221556.txt " );
InputStreamReader isr = new InputStreamReader(fis, " UTF-8 " );
BufferedReader br = new BufferedReader(isr);
// 简写如下
// BufferedReader br = new BufferedReader(new InputStreamReader(
// new FileInputStream("E:/phsftp/evdokey/evdokey_201103221556.txt"), "UTF-8"));
String line = "" ;
String[] arrs = null ;
while ((line = br.readLine()) != null ) {
arrs = line.split( " , " );
System.out.println(arrs[ 0 ] + " : " + arrs[ 1 ] + " : " + arrs[ 2 ]);
}
br.close();
isr.close();
fis.close();
}
/**
* 一行一行写入文件，适合字符写入，若写入中文字符时会出现乱码
*
* 流的关闭顺序：先打开的后关，后打开的先关，
* 否则有可能出现java.io.IOException: Stream closed异常
*
* @throws IOException
*/
@Test
public void writeFile01() throws IOException {
String[] arrs = {
" zhangsan,23,FuJian " ,
" lisi,30,ShangHai " ,
" wangwu,43,BeiJing " ,
" laolin,21,ChongQing " ,
" ximenqing,67,GuiZhou "
};
FileWriter fw = new FileWriter( new File( " E:/phsftp/evdokey/evdokey_201103221556.txt " ));
// 写入中文字符时会出现乱码
BufferedWriter bw = new BufferedWriter(fw);
// BufferedWriter bw=new BufferedWriter(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File("E:/phsftp/evdokey/evdokey_201103221556.txt")), "UTF-8")));
for (String arr:arrs){
bw.write(arr + " \t\n " );
}
bw.close();
fw.close();
}
/**
* 一行一行写入文件，解决写入中文字符时出现乱码
*
* 流的关闭顺序：先打开的后关，后打开的先关，
* 否则有可能出现java.io.IOException: Stream closed异常
*
* @throws IOException
*/
@Test
public void writeFile02() throws IOException {
String[] arrs = {
" zhangsan,23,福建 " ,
" lisi,30,上海 " ,
" wangwu,43,北京 " ,
" laolin,21,重庆 " ,
" ximenqing,67,贵州 "
};
// 写入中文字符时解决中文乱码问题
FileOutputStream fos = new FileOutputStream( new File( " E:/phsftp/evdokey/evdokey_201103221556.txt " ));
OutputStreamWriter osw = new OutputStreamWriter(fos, " UTF-8 " );
BufferedWriter bw = new BufferedWriter(osw);
// 简写如下：
// BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
// new FileOutputStream(new File("E:/phsftp/evdokey/evdokey_201103221556.txt")), "UTF-8"));
for (String arr:arrs){
bw.write(arr + " \t\n " );
}
// 注意关闭的先后顺序，先打开的后关闭，后打开的先关闭
bw.close();
osw.close();
fos.close();
}
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