Java通过BufferedWriter追加内容到文件末尾的几种常用方法

 import java.io.BufferedWriter;                                                     
 import java.io.FileOutputStream;                                                   
 import java.io.FileWriter;                                                         
 import java.io.IOException;                                                        
 import java.io.OutputStreamWriter;                                                 
 import java.io.RandomAccessFile;                                                   
                                                                                    
                                                                                    
 public class WriteStreamAppend {                                                   
                                                                                    
     public static void method1(String file, String conent) {                       
         BufferedWriter out = null;                                                 
         try {                                                                      
              out = new BufferedWriter(new OutputStreamWriter(                      
                     new FileOutputStream(file, true)));                            
              out.write(conent);                                                    
          } catch (Exception e) {                                                   
              e.printStackTrace();                                                  
          } finally {                                                               
             try {                                                                  
                  out.close();                                                      
              } catch (IOException e) {                                             
                  e.printStackTrace();                                              
              }                                                                     
          }                                                                         
      }                                                                             
                                                                                    
                                                                                    
     public static void method2(String fileName, String content) {                  
         try {                                                                      
             // 打开一个写文件器，构造函数中的第二个参数true表示以追加形式写文件    
              FileWriter writer = new FileWriter(fileName, true);                   
              writer.write(content);                                                
              writer.close();                                                       
          } catch (IOException e) {                                                 
              e.printStackTrace();                                                  
          }                                                                         
      }                                                                             
                                                                                    
                                                                                    
     public static void method3(String fileName, String content) {                  
         try {                                                                      
             // 打开一个随机访问文件流，按读写方式                                  
              RandomAccessFile randomFile = new RandomAccessFile(fileName, "rw");   
             // 文件长度，字节数                                                    
             long fileLength = randomFile.length();                                 
             // 将写文件指针移到文件尾。                                            
              randomFile.seek(fileLength);                                          
              randomFile.writeBytes(content);                                       
              randomFile.close();                                                   
          } catch (IOException e) {                                                 
              e.printStackTrace();                                                  
          }                                                                         
      }                                                                             
                                                                                    
     public static void main(String[] args) {                                       
          System.out.println("start");                                              
          method1("c:/test.txt", "追加到文件的末尾");                               
          System.out.println("end");                                                
      }                                                                             

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1 楼 liuyong19832011 2015-11-12  

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