Java IO相关

package com.inspur.rail;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.OutputStreamWriter;public class RailChinaSql {    public static void main(String[] args) {        try{        /*从D:\test.txt下读取数据，将结果输出到D:\test_result中。加“\”是防止转义 */            InputStream is=new FileInputStream("D:\\test.txt");            OutputStream os=new FileOutputStream("D:\\test_result.txt");            BufferedReader reader=new BufferedReader(new InputStreamReader(is));            BufferedWriter writer=new BufferedWriter(new OutputStreamWriter(os));            String str=null;            String[] arrs=null;            while((str=reader.readLine())!=null){                arrs=str.split(" ");                writer.write("update necur_scene_c set longitude="+arrs[0]+", latitude="+arrs[1]                        +"   "+"where oid='"+arrs[2]+"';"+"\r\n");                //System.out.println("update necur_scene_c set longitude="+arrs[0]+", latitude="+arrs[1]                //      +"   "+"where oid='"+arrs[2]+"';");            }            is.close();            os.close();        }catch(IOException e){            e.printStackTrace();        }    }}

说明：源程序要实现的功能是：依次读取文件中的每行中用分号隔开的数据，将其加工成sql语句。