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  • 42.替换文本文件内容

    import java.io.BufferedReader;
    import java.io.BufferedWriter;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileOutputStream;
    import java.io.FileReader;
    import java.io.FileWriter;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.nio.charset.Charset;
    
    import org.omg.CORBA.Environment;
    
    public class ReaderAndWriterFile {
    
         public void replaceFile(String file1,String file2) {   
               BufferedReader reader = null;
               BufferedWriter writer = null;
             try {
                //创建 FileReader对象和FileWriter对象.
                 //中文内容编码问题
                //FileReader fr  = new FileReader(file1);  
                 FileInputStream fis=new FileInputStream(file1);
                InputStreamReader isr=new InputStreamReader(fis,"utf-8");
                
                FileWriter fw = new FileWriter(file2);
                //创建 输入、输入出流对象.
                reader = new BufferedReader(isr);
                writer = new BufferedWriter(fw);
                String line = null;
                StringBuffer sbf=new StringBuffer();  
                //循环读取并追加字符
                while ((line = reader.readLine()) != null) {
                    sbf.append(line);  
                }
                System.out.println("替换前:"+sbf);
                /*替换内容*/
                String newString=sbf.toString().replace("{name}", "欧欧");
                newString = newString.replace("{type}", "狗狗");
                newString = newString.replace("{master}", "李伟");
                System.out.println("替换后:"+newString);
                writer.write(newString);  //写入文件       
            } catch (IOException e) {
                e.printStackTrace();
            }finally{
                //关闭 reader 和 writer.
                try {
                    if(reader!=null)
                        reader.close();
                    if(writer!=null)
                        writer.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        public static void main(String[] args) {
            ReaderAndWriterFile obj = new ReaderAndWriterFile();
            obj.replaceFile("c:\pet.template", "C:\myDoc\pet.txt");   
            System.out.println(Charset.defaultCharset());
        }
    }
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  • 原文地址:https://www.cnblogs.com/xiaotaoxu/p/5536582.html
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