CSV 到自定义 XML 和 Java/Javascript

Question

我想使用 Java/Javascript 从 CSV 转换为 XML。

例如我的 CSV 文件是这样的 table:

|编号 | OLO |

| 12345 |薄层色谱 |

| 12345 | VPN |

| 67890 |薄层色谱 |

我想要一个这样的 XML 文件：

<?xml version='1.0' encoding='UTF-8'?>
<Custom name="Custom_ListaOLO">
  <Attributes>
    <Map>
      <entry key="12345">
        <value>
          <List>
            <String>TLC</String>
            <String>VPN</String>
          </List>
        </value>
      </entry>
      <entry key="67890">
        <value>
          <List>
            <String>TLC</String>
          </List>
        </value>
      </entry>
    </Map>
  </Attributes>
</Custom>

或：

<?xml version='1.0' encoding='UTF-8'?>
<Custom name="Custom_ListaOLO">
  <Attributes>
    <Map>
      <entry key="12345">
        <value>
          <List>
            <String>TLC</String>
            <String>VPN</String>
          </List>
        </value>
      </entry>
      <entry key="67890", value="TLC />
    </Map>
  </Attributes>
</Custom>

你能帮帮我吗？

Answer 1

您可以使用 JAXB 编组和 MOXy 实现来满足上述要求。

JAXB Java XML 绑定架构 (JAXB) 是一个软件框架，它提供了将 Java 类映射到 XML 表示的方法。 for more info

JAXB 编组 将 java 对象转换为 xml。 for more info

MOXy 使开发人员能够处理复杂的 XML 结构。 for more info

首先读取 csv 文件并创建 java 个对象，然后使用带有 moxy 实现的 jaxb 封送处理将 java 个对象转换为 xml。

尝试以下解决方案，

为 [=65= 的代表 <Custom> 和 <entry> 元素创建两个 java pojo 类（Custom 和 Entry） ] 文件，

Custom.java

import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlRootElement;

import org.eclipse.persistence.oxm.annotations.XmlPath;

@XmlRootElement(name="Custom")
public class Custom {

    private String name;
    private List<Entry> entry;

    public String getName() {
        return name;
    }

    @XmlAttribute
    public void setName(String name) {
        this.name = name;
    }

    public Custom() {
        entry = new ArrayList<Entry>();
    }

    @XmlPath("Attributes/Map/entry")
    public List<Entry> getEntry() {
        return entry;
    }

    public void setEntry(List<Entry> entry) {
        this.entry = entry;
    }
}

Entry.java

import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.annotation.XmlAttribute;
import org.eclipse.persistence.oxm.annotations.XmlPath;

public class Entry {

    private String key;
    private List<String> string;

    public Entry() {
        string = new ArrayList<String>();
    }

    @XmlAttribute
    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }

    @XmlPath("value/List/String/text()")
    public List<String> getString() {
        return string;
    }

    public void setString(List<String> string) {
        this.string = string;
    }
}

读取csv文件，创建java个对象并将其转换为xml，

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;

import org.eclipse.persistence.jaxb.JAXBContextFactory;
import org.eclipse.persistence.jaxb.xmlmodel.ObjectFactory;

public class Demo {

    public static void main(String[] args) throws JAXBException {
        String line;
        String key = null;
        Custom custom = new Custom();
        Entry entry = null;
        int index = 0;

        try {
            BufferedReader br = new BufferedReader(new FileReader("inputCSV.csv")); //get csv file
            while ((line = br.readLine()) != null) {    //get every single line individually in csv file
                if(index > 0){  //skip the column's names (first line of csv file)
                    String[] value = line.split(",");   //collect the comma separated values (ID and OLO) into array
                    if(key == null || !key.equals(value[0])){   //first line of the csv file and when find the new key value, then create new entry
                        if(entry != null){
                            custom.getEntry().add(entry);   //add entry object into entry list of custom
                        }
                        key = value[0]; //assign the key value to variable (String key) for identify the new entry
                        entry = new Entry();    //create a new entry
                        entry.setKey(value[0]); //assign the key value to entry
                        entry.getString().add(value[1]);    //add string value String list of entry with new key
                    }else{
                        entry.getString().add(value[1]);    //add string value String list of entry under the same key
                    }
                }
                index++;
            }
            custom.setName("Custom_ListaOLO");  //set value to name attribute of custom element
            custom.getEntry().add(entry);   //add last entry into entry list of custom
        } catch (IOException e) {
            e.printStackTrace();
        }

        //marshaling with JAXB
        JAXBContext jaxbContext = JAXBContextFactory.createContext(new Class[]{Custom.class, ObjectFactory.class}, null);
        Marshaller marshaller = jaxbContext.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(custom, new File("output.xml")); //generate the output xml file
        marshaller.marshal(custom, System.out);
    }
}

inputCSV.csv

ID,OLO
12345,TLC
12345,VPN
67890,TLC

output.xml

<?xml version="1.0" encoding="UTF-8"?>
<Custom name="Custom_ListaOLO">
   <Attributes>
      <Map>
         <entry key="12345">
            <value>
               <List>
                  <String>TLC</String>
                  <String>VPN</String>
               </List>
            </value>
         </entry>
         <entry key="67890">
            <value>
               <List>
                  <String>TLC</String>
               </List>
            </value>
         </entry>
      </Map>
   </Attributes>
</Custom>

CSV 到自定义 XML 和 Java/Javascript

CSV to Custom XML with Java/Javascript

javascript

java

xml

csv

export-to-xml

|编号 | OLO |