1、比如下面这个用rdf3x处理过后的TTL文档片段：

注意缩进的是两个空格

      
       
       
        .
         
          
          
           ; 
           
             "CHEMBL_BS_2659"; 
            
              "CHEMBL_BS_2659"; 
              
              
               ; 
               
                 "30S ribosomal protein S1".
                 
                  
                  
                    , 
                   
                    .
                     
                      
                      
                       ; 
                       
                         "CHEMBL_BS_2623"; 
                        
                          "CHEMBL_BS_2623"; 
                          
                          
                           ; 
                           
                             "16S/23S ribosomal RNA interface".
                             
                              
                              
                               ; 
                               
                                 "CHEMBL_BS_2624"; 
                                
                                  "CHEMBL_BS_2624"; 
                                  
                                  
                                   ; 
                                   
                                     "23S ribosomal RNA".
                                     
                                      
                                      
                                       .
                                      
                                     
                                    
                                   
                                  
                                 
                                
                               
                              
                             
                            
                           
                          
                         
                        
                       
                      
                     
                    
                   
                  
                 
                
               
              
             
            
           
          
         
        
       
      
     

2、Java编写的正则表达式代码

代码里注释的部分和上面那行是输出三种所需的不同结果

package com.jena;import java.io.BufferedReader;import java.io.FileReader;import java.util.regex.Matcher;import java.util.regex.Pattern;public class rdfReader3 {    static String url="";        public static void main(String[] args) {        FileReader fr=null;        BufferedReader br=null;        try{            fr=new FileReader("C:/Users/Don/workspace/Jena/src/com/jena/bindingsite");            br=new BufferedReader(fr);            String s=" ";            StringBuffer str=new StringBuffer();            while((s=br.readLine())!=null){                Pattern p= Pattern.compile("<([^<>]*)>");    //匹配所有尖括号里的内容//                Pattern p= Pattern.compile("^\n*<([^<>]*)>");    //匹配每一个主语，开头匹配“除了空格所有字符”，后面匹配"<>里的所有内容，内容为非尖括号"//                Pattern p= Pattern.compile("  <([^<>]*)>");        //匹配“两个空格开头”，后面匹配"<>里的所有内容，内容为非尖括号"                Matcher m=p.matcher(s);                              while(m.find()){                    System.out.println(m.group(1));                }            }                    }catch(Exception e){            System.out.println(e.getMessage());        }                    }        }

(1)匹配所有尖括号里的内容

运行结果

http://rdf.ebi.ac.uk/resource/chembl/target/CHEMBL2363853http://rdf.ebi.ac.uk/terms/chembl#hasBindingSitehttp://rdf.ebi.ac.uk/resource/chembl/binding_site/CHEMBL_BS_2622http://rdf.ebi.ac.uk/resource/chembl/binding_site/CHEMBL_BS_2659http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://rdf.ebi.ac.uk/terms/chembl#BindingSitehttp://www.w3.org/2000/01/rdf-schema#labelhttp://rdf.ebi.ac.uk/terms/chembl#chemblIdhttp://rdf.ebi.ac.uk/terms/chembl#hasTargethttp://rdf.ebi.ac.uk/resource/chembl/target/CHEMBL2363965http://rdf.ebi.ac.uk/terms/chembl#bindingSiteNamehttp://rdf.ebi.ac.uk/resource/chembl/target/CHEMBL2363965http://rdf.ebi.ac.uk/terms/chembl#hasBindingSitehttp://rdf.ebi.ac.uk/resource/chembl/binding_site/CHEMBL_BS_2659http://rdf.ebi.ac.uk/resource/chembl/binding_site/CHEMBL_BS_2623http://rdf.ebi.ac.uk/resource/chembl/binding_site/CHEMBL_BS_2623http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://rdf.ebi.ac.uk/terms/chembl#BindingSitehttp://www.w3.org/2000/01/rdf-schema#labelhttp://rdf.ebi.ac.uk/terms/chembl#chemblIdhttp://rdf.ebi.ac.uk/terms/chembl#hasTargethttp://rdf.ebi.ac.uk/resource/chembl/target/CHEMBL2363965http://rdf.ebi.ac.uk/terms/chembl#bindingSiteNamehttp://rdf.ebi.ac.uk/resource/chembl/binding_site/CHEMBL_BS_2624http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://rdf.ebi.ac.uk/terms/chembl#BindingSitehttp://www.w3.org/2000/01/rdf-schema#labelhttp://rdf.ebi.ac.uk/terms/chembl#chemblIdhttp://rdf.ebi.ac.uk/terms/chembl#hasTargethttp://rdf.ebi.ac.uk/resource/chembl/target/CHEMBL2364022http://rdf.ebi.ac.uk/terms/chembl#bindingSiteNamehttp://rdf.ebi.ac.uk/resource/chembl/target/CHEMBL2364022http://rdf.ebi.ac.uk/terms/chembl#hasBindingSitehttp://rdf.ebi.ac.uk/resource/chembl/binding_site/CHEMBL_BS_2624

(2)匹配每一个主语，即开头不是两个空格的那一行数据的第一对尖括号里的内容

 

运行结果

http://rdf.ebi.ac.uk/resource/chembl/target/CHEMBL2363853http://rdf.ebi.ac.uk/resource/chembl/binding_site/CHEMBL_BS_2659http://rdf.ebi.ac.uk/resource/chembl/target/CHEMBL2363965http://rdf.ebi.ac.uk/resource/chembl/binding_site/CHEMBL_BS_2623http://rdf.ebi.ac.uk/resource/chembl/binding_site/CHEMBL_BS_2624http://rdf.ebi.ac.uk/resource/chembl/target/CHEMBL2364022

 

 

(3)匹配“两个空格开头”，后面匹配"<>里的所有内容，内容为非尖括号"

 

http://www.w3.org/2000/01/rdf-schema#labelhttp://rdf.ebi.ac.uk/terms/chembl#chemblIdhttp://rdf.ebi.ac.uk/terms/chembl#hasTargethttp://rdf.ebi.ac.uk/terms/chembl#bindingSiteNamehttp://www.w3.org/2000/01/rdf-schema#labelhttp://rdf.ebi.ac.uk/terms/chembl#chemblIdhttp://rdf.ebi.ac.uk/terms/chembl#hasTargethttp://rdf.ebi.ac.uk/terms/chembl#bindingSiteNamehttp://www.w3.org/2000/01/rdf-schema#labelhttp://rdf.ebi.ac.uk/terms/chembl#chemblIdhttp://rdf.ebi.ac.uk/terms/chembl#hasTargethttp://rdf.ebi.ac.uk/terms/chembl#bindingSiteName

 

 匹配前面两个空格开始的数据时，在前面直接输入两个空格即可

Pattern p= Pattern.compile("  <([^<>]*)>");