java读取utf8类型的文件

　　源文件为utf-8格式，且里面包含中文，如：

　　in ('133','153','180','189') then '电信'

　　in ('130','131','132','145','155','156','183','185','186') then '联通'

　　1,不加转码的时候中文会乱码：

　　Java代码

　　1.public static void main(String[] args) throws Exception {

　　2. File f = new File("http://www.cos120.com");

　　3. InputStreamReader insReader = new InputStreamReader(new FileInputStream(f));

　　4. BufferedReader bufReader = new BufferedReader(insReader);

　　5. String line = new String();

　　6. while ((line = bufReader.readLine()) != null) {

　　7. System.out.println(line);

　　8. }

　　9. bufReader.close();

　　10.}

　　public static void main(String[] args) throws Exception {

　　File f = new File("D:/youni_insert_youni_file_transfer_ft.pl");

　　InputStreamReader insReader = new InputStreamReader(new FileInputStream(f));

　　BufferedReader bufReader = new BufferedReader(insReader);

　　String line = new String();

　　while ((line = bufReader.readLine()) != null) {

　　System.out.println(line);

　　}

　　bufReader.close();

　　}

　　Java代码

　　1.in ('133','153','180','189') then '鐢典俊'

　　2.in ('130','131','132','145','155','156','183','185','186') then '鑱旈?'

　　in ('133','153','180','189') then '鐢典俊'

　　in ('130','131','132','145','155','156','183','185','186') then '鑱旈?'

　　2,如果对string进行utf-8编码，某些中文加单引号会导致乱码：

　　Java代码

　　1.public static void main(String[] args) throws Exception {

　　2. //String charsetName = "UTF-8";

　　3. File f = new File("D:/youni_insert_youni_file_transfer_ft.pl");

　　4. InputStreamReader insReader = new InputStreamReader(new FileInputStream(f));

　　5. BufferedReader bufReader = new BufferedReader(insReader);

　　6. String line = new String();

　　7. while ((line = bufReader.readLine()) != null) {

　　8. System.out.println(new String(line.getBytes()，"utf-8"));

　　9. }

　　10. bufReader.close();

　　11. }

　　public static void main(String[] args) throws Exception {

　　//String charsetName = "UTF-8";

　　File f = new File("D:/youni_insert_youni_file_transfer_ft.pl");

　　InputStreamReader insReader = new InputStreamReader(new FileInputStream(f));

　　BufferedReader bufReader = new BufferedReader(insReader);

　　String line = new String();

　　while ((line = bufReader.readLine()) != null) {

　　System.out.println(new String(line.getBytes()，"utf-8"));

　　}

　　bufReader.close();

　　}

　　Java代码

　　1.in ('133','153','180','189') then '电信'

　　2.in ('130','131','132','145','155','156','183','185','186') then '联??'

　　in ('133','153','180','189') then '电信'

　　in ('130','131','132','145','155','156','183','185','186') then '联??'

　　3,读文件时候用utf8编码读，则不会有问题了：

　　Java代码

　　1.public static void main(String[] args) throws Exception {

　　2. String charsetName = "UTF-8";

　　3. File f = new File("D:/youni_insert_youni_file_transfer_ft.pl");

　　4. InputStreamReader insReader = new InputStreamReader(new FileInputStream(f)， charsetName);

　　5. BufferedReader bufReader = new BufferedReader(insReader);

　　6. String line = new String();

　　7. while ((line = bufReader.readLine()) != null) {

　　8. System.out.println(line);

　　9. }

　　10. bufReader.close();

　　11. }

　　public static void main(String[] args) throws Exception {

　　String charsetName = "UTF-8";

　　File f = new File("D:/youni_insert_youni_file_transfer_ft.pl");

　　InputStreamReader insReader = new InputStreamReader(new FileInputStream(f)， charsetName);

　　BufferedReader bufReader = new BufferedReader(insReader);

　　String line = new String();

　　while ((line = bufReader.readLine()) != null) {

　　System.out.println(line);

　　}

　　bufReader.close();

　　}

　　Java代码

　　1.in ('133','153','180','189') then '电信'

　　2.in ('130','131','132','145','155','156','183','185','186') then '联通'