用於2個或更多文本文件比較的JAVA程序

Question

我想比較2個或更多文本文件來查找重複條目。 O/P應該說這些文件中的行匹配或不匹配。

我想用文件的所有行，比較各文件1條線2（即，文件1的行1比較文件2中的所有行）。 當我運行下面的代碼時，比較文件1的第1行和文件2的所有行，然後程序終止。

注意：我試過Danail阿列克謝耶夫的想法（一看便知），但循環無限運行，（還沒有上升到2行文件1，在文件1的第1行無限循環的所有生產線文件2）

文件的下面

文件1：內容

21321sc231231a23d1a32df1adfsdfsdfsd 
fsdfs4dfs 
dfsdf 
3sd1f 
sdfs4df3s 
df0 
sd4f 
sdf 
sdf1 
3sdf 
sdfs4df6s 
fs1df 
3sdfsd 
fs.d1f 
s3d1 
sdf1s 
df1 
sdf1sdf 

文件2：內容

21321sc231231a23d1a32df1adfsdfsdfsd 
fsdfs4dfs 
dfsdf 
3sd1f 
sdfs4df3s 
df0 
sd4f 
sdf 
sdf1 
3sdf 
sdfs4df6s 
fs1df 
3sdfsd 
fs.d1f 
s3d1 
sdf1s 
df1 
sdf1sdf 

代碼：

while ((sCurrentLine1 =file1.readLine()) != null) 
{ 
    while ((sCurrentLine2 =file2.readLine()) != null) 
    { 
    if(sCurrentLine1.equalsIgnoreCase(sCurrentLine2)) 
    { 
     System.out.println("=---Matched----=" + sCurrentLine1 + " -->" + sCurrentLine2); 
    } 
    else 
    { 
     System.out.println("=---Not Matched----=" + sCurrentLine1 + " -->" + sCurrentLine2); 
    } 
    } 
    } 

O/P：

= --- ----匹配= 1321sc231231a23d1a32df1adfsdfsdfsd - > 1321sc231231a23d1a32df1adfsdfsdfsd = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > fsdfs4dfs = ---不匹配---- = 1321sc231231a23d1a32df1adf sdfsdfsd - > dfsdf = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > 3sd1f = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > sdfs4df3s = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > DF0 = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > sd4f = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > SDF = ---不匹配--- - = 1321sc231231a23d1a32df1adfsdfsdfsd - > SDF1 = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > 3sdf = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > sdfs4df6s = ---未Matched-- - = 1321sc231231a23d1a32df1adfsdfsdfsd - > fs1df = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > 3sdfsd = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > fs.d1f = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > s3d1 = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - - > sdf1s = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > DF1 = ---不匹配---- = 1321sc231231a23d1a32df1adfsdfsdfsd - > sdf1sdf

Answer 1

public void CompareFileMain() 
{ 
    /*int tempvar = 0; 
    int tempvar1 =0 ;*/ 
    String Tlines1[] = new String [100]; 
    String Tlines2[] = new String [100]; 
    String tempstring1 = null; 
    String tempstring2 = null; 
    int file1lines; 
    int file2lines ; 
    System.out.println(file1lines = linesOffile1()); 
    System.out.println(file2lines = linesOffile2()); 
    try { 
    file1 = new BufferedReader(new FileReader(SOAPFile)); 
    file2 = new BufferedReader(new FileReader(RestFile)); 
    int oplines = 1; 
    while ((sCurrentLine1 =file1.readLine()) != null) 
    { 
     tempstring1 = sCurrentLine1; 
     while ((sCurrentLine2 =file2.readLine()) != null) 
     { 
       tempstring2 = sCurrentLine2; 
       } 
     if ((sCurrentLine2 =file2.readLine()) == null) 
     { 
      System.out.println("File 1 --> line# "+oplines +"\t"); 
      CompareFileSub(tempstring1, tempstring2); 
     } 
     oplines = oplines+1; 
    } 
     } catch (IOException e) { 
     e.printStackTrace(); 
     } 
} 
public void CompareFileSub(String t1, String t2) throws IOException // reading file 2 
{ 
    file2 = new BufferedReader(new FileReader(RestFile)); 
    int oplines = 1; 
    while ((sCurrentLine2 =file2.readLine()) != null) 
    { 
    t2 = sCurrentLine2; 
    if((t1.contains(t2) && (t2.contains(t1)))) 
    { 
      System.out.print(t1+"-->"+t2+"---->matched \t"); 
      System.out.println("File 2 --> line# "+oplines +"\n"); 
    } 
    else 
    { 
      System.out.print(t1+"-->"+t2+"---->not matched \t"); 
      System.out.println("File 2 --> line# "+oplines +"\n"); 
    } 
       oplines = oplines+1; 
} 
} 

public int linesOffile1() //Count file 1 lines 
{ 
    try { 
    while ((sCurrentLine1 =file1.readLine()) != null) 
    { 
     //System.out.println("Taken line sCurrentLine1 "+sCurrentLine1); 
     //System.out.println("Taken line sCurrentLine1 "+i); 
     i=i+1; 
    }         
     } catch (IOException e) { 
      e.printStackTrace(); 
      } 
    finally { 
    try { 
      if (file1 == null)file1.close(); 
     } catch (IOException ex) { 
       ex.printStackTrace(); 
       } 
    } 
    return i; 

}  
public int linesOffile2() //Count file 2 lines 
{ 
    try { 
    while ((sCurrentLine2 =file2.readLine()) != null) 
    { 
    //System.out.println("Taken line sCurrentLine2 "+sCurrentLine2); 
    //System.out.println("Taken line sCurrentLine2 "+j); 
    j=j+1; 
    } 
     } catch (IOException e) { 
      e.printStackTrace(); 
      } 
    finally { 
    try { 
     if (file2 == null)file1.close(); 
    } catch (IOException ex) { 
      ex.printStackTrace(); 
      } 
    } 
return j; 
}  

輸入：

File1中：

java 
c++ 

test 
stack 
test 
overflow 
extraLine 

文件2：

stack 
overflow 
test 
java 
c++ 

test 

輸出繼電器

8 
7 
File 1 --> line# 1 
java-->stack---->not matched File 2 --> line# 1 

java-->overflow---->not matched  File 2 --> line# 2 

java-->test---->not matched  File 2 --> line# 3 

java-->java---->matched  File 2 --> line# 4 

java-->c++---->not matched File 2 --> line# 5 

java-->---->not matched  File 2 --> line# 6 

java-->test---->not matched  File 2 --> line# 7 

File 1 --> line# 2 
c++-->stack---->not matched  File 2 --> line# 1 

c++-->overflow---->not matched File 2 --> line# 2 

c++-->test---->not matched File 2 --> line# 3 

c++-->java---->not matched File 2 --> line# 4 

c++-->c++---->matched File 2 --> line# 5 

c++-->---->not matched File 2 --> line# 6 

c++-->test---->not matched File 2 --> line# 7 

File 1 --> line# 3 
-->stack---->not matched File 2 --> line# 1 

-->overflow---->not matched  File 2 --> line# 2 

-->test---->not matched  File 2 --> line# 3 

-->java---->not matched  File 2 --> line# 4 

-->c++---->not matched File 2 --> line# 5 

-->---->matched  File 2 --> line# 6 

-->test---->not matched  File 2 --> line# 7 

File 1 --> line# 4 
test-->stack---->not matched File 2 --> line# 1 

test-->overflow---->not matched  File 2 --> line# 2 

test-->test---->matched  File 2 --> line# 3 

test-->java---->not matched  File 2 --> line# 4 

test-->c++---->not matched File 2 --> line# 5 

test-->---->not matched  File 2 --> line# 6 

test-->test---->matched  File 2 --> line# 7 

File 1 --> line# 5 
stack-->stack---->matched File 2 --> line# 1 

stack-->overflow---->not matched File 2 --> line# 2 

stack-->test---->not matched File 2 --> line# 3 

stack-->java---->not matched File 2 --> line# 4 

stack-->c++---->not matched  File 2 --> line# 5 

stack-->---->not matched File 2 --> line# 6 

stack-->test---->not matched File 2 --> line# 7 

File 1 --> line# 6 
test-->stack---->not matched File 2 --> line# 1 

test-->overflow---->not matched  File 2 --> line# 2 

test-->test---->matched  File 2 --> line# 3 

test-->java---->not matched  File 2 --> line# 4 

test-->c++---->not matched File 2 --> line# 5 

test-->---->not matched  File 2 --> line# 6 

test-->test---->matched  File 2 --> line# 7 

File 1 --> line# 7 
overflow-->stack---->not matched File 2 --> line# 1 

overflow-->overflow---->matched  File 2 --> line# 2 

overflow-->test---->not matched  File 2 --> line# 3 

overflow-->java---->not matched  File 2 --> line# 4 

overflow-->c++---->not matched File 2 --> line# 5 

overflow-->---->not matched  File 2 --> line# 6 

overflow-->test---->not matched  File 2 --> line# 7 

File 1 --> line# 8 
extraLine-->stack---->not matched File 2 --> line# 1 

extraLine-->overflow---->not matched File 2 --> line# 2 

extraLine-->test---->not matched File 2 --> line# 3 

extraLine-->java---->not matched File 2 --> line# 4 

extraLine-->c++---->not matched  File 2 --> line# 5 

extraLine-->---->not matched File 2 --> line# 6 

extraLine-->test---->not matched File 2 --> line# 7 

得到了解決，謝謝大家

Answer 2

您正在比較的每一行第二個文件分配給第一個文件的每一行。

爲了做正確的比較，你必須檢查匹配的行號。

更改您while循環：

while (((sCurrentLine1 = file1.readLine()) != null) && ((sCurrentLine2 = file2.readLine()) != null) { 
    // your comparison 
} 

一定要包括檢查，以檢測其中的文件有不同的行數的情況。

編輯：

從OP澄清之後，我想我知道這個問題。

您正在嘗試讀取文件。當比較File1的第一行和File2的所有行時，嵌套的while循環將停止，因爲您已經讀取了文件中的所有行，並且readLine()每次都會返回null。

要解決此問題，需要事先讀取File2中的所有行，然後使用它們與File1的行進行比較。