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000010001
000020001
000030003
000040004
000050005
000060006
000010001
000020002
000030003
000040004
000050005
000060006
fc = (FileConnection) Connector.open(filePath);
OutputStream out=fc.openOutputStream(bytesize);//bytesize为000010001所在行的字节数
byte[] b=content.toString().getBytes("UTF-8");
out.write(b);