对文档内容处理后再写入另一个文档

来源：互联网发布：网络配置异常怎么修复编辑：程序博客网时间：2024/05/16 05:27

首先将处理定义成一个接口

public interface DealLine {     public String deal(String lineString, int line, int maxLine);        //需要处理的字符串行，当前是第几行及总共多少行}

实现处理接口

public class AddSelectDealLine implements DealLine {    public String deal(String lineString, int line, int maxLine){        int countNum = 3;        if (line % countNum == 0 || line == 1) {            lineString = "insert into tmp_clear_user(province,msisdn,service_id)\r\n"                     + "select " + "'"                    + lineString.replaceAll("\\s", "','") + "'"                    + " from dual union";                //每3行数据组成一个oracle sql语句，最后不足3行的数据也组成一个sql语句        }else if((line + 1) % countNum == 0 || line == (maxLine - 1)){            lineString = "select " + "'"                    + lineString.replaceAll("\\s", "','") + "'"                    + " from dual;";        }else{            lineString = "select " + "'"                    + lineString.replaceAll("\\s", "','") + "'"                    + " from dual union";        }        return lineString;    }}

读写中引入处理接口

public class FileReadAndFileWrite {    public static void readFileByLinesAndWriteFileByLines(String openFileName, String saveFileName, DealLine dl) {        BufferedReader reader = null;        BufferedWriter writer = null;        String tempString = null;        int line = 1;        int maxLine = 1;        try {            reader = new BufferedReader(new InputStreamReader(new FileInputStream(openFileName), "utf-8"));            writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(saveFileName), "utf-8"));            //get maxLine            while ((tempString = reader.readLine()) != null) {                maxLine++;            }            reader.close();            reader = new BufferedReader(new InputStreamReader(new FileInputStream(openFileName), "utf-8"));            //dealLine            while ((tempString = reader.readLine()) != null) {                writer.write(dl.deal(tempString, line, maxLine));                writer.newLine();                line++;            }            reader.close();            writer.close();        } catch (IOException e) {            e.printStackTrace();        } finally {            if (reader != null) {                try {                    reader.close();                } catch (IOException e1) {                }            }            if (writer != null) {                try {                    writer.close();                } catch (IOException e2) {                }            }        }    }       public static void createFile(String fileName) {        File file = new File(fileName);        try {            if (!file.exists()) {                file.createNewFile();            }        } catch (Exception e) {            e.printStackTrace();        }    }    public static void main(String[] args) {        DealLine dl = new AddSelectDealLine();        //DealLine dl = new QueryUrlDealLine();        readFileByLinesAndWriteFileByLines("d:/新建文本文档.txt", "d:/测试.txt", dl);                //每次有新的处理时只要实现接口，再在main重新定义一个接口类型指向新实现接口即可    }}

0 0