java 回车替换换行

   
   
  
  
 
   
 
    
 
     
 
    
 
    
 
     
 
      //第一种方式 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      import java.util.regex.Pattern; 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      import java.util.regex.Matcher; 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       ... 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      // 4 different combinaisons 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       Pattern CRLF = Pattern.compile( 
      "(\r\n|\r|\n|\n\r)"); 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       Matcher m = CRLF.matcher(myString); 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      if (m.find()) { 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       newString = m.replaceAll( 
      "<br>"); 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       } 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      //第二种方式 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       newString = myString.replaceAll( 
      "(\r\n|\r|\n|\n\r)", 
      "<br>"); 
     
 
    
 
  
  
  
 
 

测试

   
   
  
  
 
   
 
    
 
     
 
    
 
    
 
     
 
      import java.util.regex.Matcher; 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      import java.util.regex.Pattern; 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      public 
      class StringTest { 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      public static String sss(String myString){ 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       String newString= 
      null; 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       Pattern CRLF = Pattern.compile( 
      "(\r\n|\r|\n|\n\r)"); 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       Matcher m = CRLF.matcher(myString); 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      if (m.find()) { 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       newString = m.replaceAll( 
      "<br>"); 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       } 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      return newString; 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       } 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      /** 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
       * @param args 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
       */ 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      public static void main(String[] args) { 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       String aaa= 
      "sdfsfdsfsdf\r\n,dsfsdfsdf\r\n"; 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
      //aaa.replace("s", "x"); 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       String newStr=sss(aaa); 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       System.out.println(newStr); 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       } 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     
 
     
 
    
 
   
 
    
 
     
 
    
 
    
 
     

       }