1 package com.csii.pweb.query.action; 2 3 import java.io.BufferedReader; 4 import java.io.FileNotFoundException; 5 import java.io.FileReader; 6 import java.io.IOException; 7 import java.util.ArrayList; 8 import java.util.List; 9 10 11 public class JavaFile { 12 public static void main(String[] args) { 13 try { 14 // read file content from file 15 StringBuffer sb= new StringBuffer(""); 16 17 FileReader reader = new FileReader("D:/t/workflow.sql"); 18 BufferedReader br = new BufferedReader(reader); 19 20 String str = null; 21 final String markStart = "CREATE TABLE"; 22 List<String> tableNames = new ArrayList<String>(); 23 while((str = br.readLine()) != null) { 24 str = str.toUpperCase().trim(); //转为大写并去除两端空格 25 if(str.startsWith(markStart) && !str.startsWith("--")) { //非注释之建表语句 26 str = str.substring(markStart.length()).replace(‘(‘, ‘ ‘); //取表名 27 tableNames.add("DROP TABLE " + str.trim()+";"); 28 // System.out.println(str); 29 } 30 } 31 32 br.close(); 33 reader.close(); 34 //倒序 35 for(int i=tableNames.size()-1; i>=0;i--) { 36 String name = tableNames.get(i); 37 sb.append(name).append("\n"); 38 } 39 System.out.println("--------------start---------------"); 40 System.out.println(sb); 41 System.out.println("--------------end---------------"+tableNames.size()); 42 43 // write string to file 44 // FileWriter writer = new FileWriter("c://test2.txt"); 45 // BufferedWriter bw = new BufferedWriter(writer); 46 // bw.write(sb.toString()); 47 // 48 // bw.close(); 49 // writer.close(); 50 } 51 catch(FileNotFoundException e) { 52 e.printStackTrace(); 53 } 54 catch(IOException e) { 55 e.printStackTrace(); 56 } 57 } 58 }
原文地址:https://www.cnblogs.com/listened/p/9457155.html
时间: 2024-11-03 22:18:16