Java开发网 - 关于读取整个文件字符串的问题，急，在线等

Topic: 关于读取整个文件字符串的问题，急，在线等

1.关于读取整个文件字符串的问题，急，在线等	Copy to clipboard
Posted by: mrs_cadbary Posted on: 2005-12-02 08:55 我用readline读文本文件，总是遇到第一个换行符就停止了，用哪个方法可以读整个文件呢，而且希望读出来直接是字符串形式，因为我想用 split方法把这个文件分开。哪位高人指点我一下，谢谢了

2.Re:关于读取整个文件字符串的问题，急，在线等 [Re: mrs_cadbary]	Copy to clipboard
Posted by: abc__abc1 Posted on: 2005-12-02 09:19 请具体说明一下，把代码放出来！

3.Re:关于读取整个文件字符串的问题，急，在线等 [Re: mrs_cadbary]

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Posted by: mrs_cadbary
Posted on: 2005-12-02 09:36

比如说这一段，其实我并不是只想读取一行，而是想读取整个文件，然后把这个文件作为字符串以\r为分隔符用split切开。
BufferedReader p=new BufferedReader(new InputStreamReader(new FileInputStream("d:\\Jfiles\\printname2.txt"))); //读取文档
String a=p.readLine();
String[] aa = a.split("\r",0);

4.Re:关于读取整个文件字符串的问题，急，在线等 [Re: mrs_cadbary]	Copy to clipboard
Posted by: mrs_cadbary Posted on: 2005-12-02 09:41 或者循环使用readline把文件分成一个一个字符串也行，但是语句我就不会了

5.Re:关于读取整个文件字符串的问题，急，在线等 [Re: mrs_cadbary]	Copy to clipboard
Posted by: abc__abc1 Posted on: 2005-12-02 09:50 printname2.txt文件上传给我

6.Re:关于读取整个文件字符串的问题，急，在线等 [Re: mrs_cadbary]

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Posted by: abc__abc1
Posted on: 2005-12-02 10:05

不知道有没有帮助，仅供参考


import java.io.*;

public class ReadfileQ {
  
  public ReadfileQ () {
    
    try{
    
      BufferedReader p=new BufferedReader(new InputStreamReader(new FileInputStream("data.txt"))); //读取文档    
      StringBuffer ab = new StringBuffer();
      String a=null;
      do{
        a = p.readLine();
        System.out.println("read data="+a);  
        if(a != null)
        ab.append(a);
      }while(a != null);
      System.out.println(ab.toString());      
    }
    catch(Exception e){
      
        e.printStackTrace();
    }
  }
  
  public static void main(String[] args) {
  
    ReadfileQ rfq = new ReadfileQ();
  }  
}

7.Re:关于读取整个文件字符串的问题，急，在线等 [Re: mrs_cadbary]

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Posted by: mrs_cadbary
Posted on: 2005-12-03 19:20

上面的循环挺有用，不过我要实现的是从一个名为printname的文件中查找ip地址为192.168.0.120的机器上程序运行的信息，我的java程序代码如下


import java.io.*;
import java.lang.*;
class Printname2
{  public static void main(String args[])throws IOException{                                                      //@1 @2
    BufferedReader p=new BufferedReader(new InputStreamReader(new FileInputStream("d:\\Jfiles\\printname2.txt")));          //读取文档
    String a=p.readLine();
    String[] aa = a.split("\\..",0);                                                 //以“#”为分隔符将文档分割为 b[]
    //File print=new File("d:\\Jfiles\\print.txt");     //输出到文件
    for (int i = 0 ; i <aa.length ; i++ ) 
    { String[] b=aa[i].split(" ",0);                                             //以空格为分隔符将b[i]分割        @3
       String string1=b[5];
       String string2="submitted";
       if(string1.equals(string2)==true)                //当b[i]中包含submitted字段时执行以下程序
          { String[] c=b[8].split(":",0);                                               //@4
             String string3=c[0];
             String string4="<192.168.0.120";  
              if (string3.equals(string4)==true)                             //当b[i]中包含要求的ip地址时执行以下程序
               {String string5=b[1];                                                    //@5
                 System.out.println(aa[i]);                                     //输出此程序的请求信息
                 //PrintStream p1=new PrintStream(new FileOutputStream(print),true);
                 //p1.println(aa[i]);
                 for (int j = i+1 ; j <aa.length ; j++ )
                 {String[] d=aa[j].split(" ",0);                                        //@6
                   String string6=d[1];
                   if (string6.equals(string5)==true)                        //以b[i]中第二字符串即进程号为筛选以下信息的关键字
                    {String string7=d[5];                                               //@7
                      String string8="executing";
                      if(string7.equals(string8)==true)
                        {System.out.println(aa[j]);                                //输出此程序的收到信息             @8
                           //PrintStream p2=new PrintStream(new FileOutputStream(print),true);
                            //p2.println(aa[j]);
                            for (int n = j+1 ; n <aa.length ; n++ )
                            {String[] e=aa[n].split(" ",0);                             //@9
                               String string9=e[1];
                               if (string9.equals(string5)==true)
                               {System.out.println(aa[n]);                         //输出此程序的执行信息          @10
                                 //PrintStream p3=new PrintStream(new FileOutputStream(print),true);
                                 //p3.println(aa[n]);
                                 continue;
                               }                                                                 //@10
                            }                                                                    //@9
                        }                                                                        //@8
                      
                     }                                                                           //@7
                   // else return;
                  }                                                                              //@6
                
               }                                                                                 //@5
            
           }                                                                                     //@4
       // else return;
    
      }                                                                                          //@3
   }                                                                                             //@2
}

如果我用readline的循环该怎么返回ip地址呢

printname.txt的内容如下（包含换行符）


000 (277.000.000) 11/04 20:51:40 Job submitted from host: <192.168.0.121:1027>
..
001 (277.000.000) 11/04 20:51:44 Job executing on host: <192.168.0.121:1026>
..
005 (277.000.000) 11/04 20:51:45 Job terminated.
  (1) Normal termination (return value 0)
    Usr 0 00:00:00, Sys 0 00:00:00  -  Run Remote Usage
    Usr 0 00:00:00, Sys 0 00:00:00  -  Run Local Usage
    Usr 0 00:00:00, Sys 0 00:00:00  -  Total Remote Usage
    Usr 0 00:00:00, Sys 0 00:00:00  -  Total Local Usage
  203  -  Run Bytes Sent By Job
  96  -  Run Bytes Received By Job
  203  -  Total Bytes Sent By Job
  96  -  Total Bytes Received By Job
..
000 (278.000.000) 11/04 20:53:12 Job submitted from host: <192.168.0.120:1027>
..
000 (279.000.000) 11/04 20:53:12 Job submitted from host: <192.168.0.120:1027>
..
000 (280.000.000) 11/04 20:53:13 Job submitted from host: <192.168.0.121:1027>
..
001 (278.000.000) 11/04 20:53:16 Job executing on host: <192.168.0.120:1026>
..
005 (278.000.000) 11/04 20:53:16 Job terminated.
  (1) Normal termination (return value 0)
    Usr 0 00:00:00, Sys 0 00:00:00  -  Run Remote Usage
    Usr 0 00:00:00, Sys 0 00:00:00  -  Run Local Usage
    Usr 0 00:00:00, Sys 0 00:00:00  -  Total Remote Usage
    Usr 0 00:00:00, Sys 0 00:00:00  -  Total Local Usage
  203  -  Run Bytes Sent By Job
  96  -  Run Bytes Received By Job
  203  -  Total Bytes Sent By Job
  96  -  Total Bytes Received By Job
..
001 (279.000.000) 11/04 20:53:19 Job executing on host: <192.168.0.120:1026>
..
005 (279.000.000) 11/04 20:53:19 Job terminated.
  (1) Normal termination (return value 0)
    Usr 0 00:00:00, Sys 0 00:00:00  -  Run Remote Usage
    Usr 0 00:00:00, Sys 0 00:00:00  -  Run Local Usage
    Usr 0 00:00:00, Sys 0 00:00:00  -  Total Remote Usage
    Usr 0 00:00:00, Sys 0 00:00:00  -  Total Local Usage
  203  -  Run Bytes Sent By Job
  96  -  Run Bytes Received By Job
  203  -  Total Bytes Sent By Job
  96  -  Total Bytes Received By Job
..
001 (280.000.000) 11/04 20:53:21 Job executing on host: <192.168.0.121:1026>
..
005 (280.000.000) 11/04 20:53:21 Job terminated.
  (1) Normal termination (return value 0)
    Usr 0 00:00:00, Sys 0 00:00:00  -  Run Remote Usage
    Usr 0 00:00:00, Sys 0 00:00:00  -  Run Local Usage
    Usr 0 00:00:00, Sys 0 00:00:00  -  Total Remote Usage
    Usr 0 00:00:00, Sys 0 00:00:00  -  Total Local Usage
  203  -  Run Bytes Sent By Job
  96  -  Run Bytes Received By Job
  203  -  Total Bytes Sent By Job
  96  -  Total Bytes Received By Job
..