Java - 将管道和逗号分隔文件转换为xml

Question

我想将管道和逗号两个分隔文件转换为xml。在分隔的文件我期待转换的格式为：

UUID | Location | Name | Age, UUID | Location | Name | Age 
    123 | Bangalore | Paras | 23, 234 | Bangalore | Varun | 25 

我期待将其转换为：

<data> 
    <UUID>123</UUID> 
    <location>Bangalore</location> 
    <name> Paras </name> 
    <age> 23</age> 
</data> 
<data> 
    <UUID>234</UUID> 
    <location>Bangalore</location> 
    <name> Paras </name> 
    <age> 23</age> 
</data> 

Answer 1

您需要仔细分析你输入的字符串。下面的示例将帮助你开始。

import java.io.BufferedOutputStream; 
import java.io.FileReader; 
import java.io.IOException; 
import java.io.LineNumberReader; 
import java.io.OutputStreamWriter; 
import java.util.ArrayList; 
import java.util.List; 

import com.thoughtworks.xstream.XStream; 
import com.thoughtworks.xstream.io.xml.PrettyPrintWriter; 
import com.thoughtworks.xstream.io.xml.StaxDriver; 



class Data { 
    String UUID; 
    String location; 
    String name; 
    String age; 

    public Data(String[] elements){ 
     int i = 0; 
     UUID = elements[i++].trim(); 
     location = elements[i++].trim(); 
     name = elements[i++].trim(); 
     age = elements[i++].trim(); 
    } 

} 

和转换

public class Convert { 

    static final String[] headers = {"UUID","location","name","age"}; 


    public static void main(String[] args) throws IOException { 

     List<Data> dataList = new ArrayList<Data>(); 
     LineNumberReader r = new LineNumberReader(new FileReader("test.csv")); 

     String line = r.readLine(); 
     while(line != null){ 
      String[] dataArray = line.split(","); 
      for(String record:dataArray){ 
       String[] elements = record.split("\\|"); 
       Data data = new Data(elements); 
       //If you dont want to accumulate data then you can stream xml out. 
       dataList.add(data); 
      } 
      line = r.readLine(); 
     } 
     r.close(); 

     // now use your favorite xml library to stream out. I use xstream. in your case even direct constructing xml seems ok too. 
     XStream xstream = new XStream(new StaxDriver()); 
     xstream.alias("data", Data.class); 
     xstream.toXML(dataList, System.out); 

     //if you want formatted xml then use PrettyPrintWriter.. 
/*  BufferedOutputStream stdout = new BufferedOutputStream(System.out); 
     PrettyPrintWriter p = new PrettyPrintWriter(new OutputStreamWriter(stdout)); 
     xstream.marshal(dataList, p); 
*/  
    } 

} 

我的样本CSV文件

123| Bangalore | Paras | 23 , 234 | Bangalore | Varun | 25 
456| Mumbai | xyz | 30 , 999 | Ahmedabad | abc | 28 

和输出

<list> 
    <data> 
    <UUID>123</UUID> 
    <location>Bangalore</location> 
    <name>Paras</name> 
    <age>23</age> 
    </data> 
    <data> 
    <UUID>234</UUID> 
    <location>Bangalore</location> 
    <name>Varun</name> 
    <age>25</age> 
    </data> 
    <data> 
    <UUID>456</UUID> 
    <location>Mumbai</location> 
    <name>xyz</name> 
    <age>30</age> 
    </data> 
    <data> 
    <UUID>999</UUID> 
    <location>Ahmedabad</location> 
    <name>abc</name> 
    <age>28</age> 
    </data> 
</list>