XML转换为json格式

最新推荐文章于 2025-06-16 09:19:33 发布

原创最新推荐文章于 2025-06-16 09:19:33 发布 · 2k 阅读

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文章标签：

#json #xml #string #encoding #file #import

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一、java源码

import java.io.File;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

public class xml2json
{
  public static void main(String[] arge)throws ParserConfigurationException, SAXException, IOException
  {
    File f = new File("D:\\321.xml");
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document doc = builder.parse(f);
    NodeList nl = doc.getElementsByTagName("city");
    StringBuffer res = new StringBuffer();
    res.append("{\"maps\":{\"version\":[");

    for (int i = 0; i < nl.getLength(); i++) {
      String name = doc.getElementsByTagName("name").item(i).getFirstChild()
        .getNodeValue();
      String pinyin = doc.getElementsByTagName("pinyin").item(i)
        .getFirstChild().getNodeValue();
      String durl = doc.getElementsByTagName("durl").item(i).getFirstChild()
        .getNodeValue();
      String size = doc.getElementsByTagName("size").item(i).getFirstChild()
        .getNodeValue();
      if (i == nl.getLength() - 1)
        res.append("{\"name\":\"" + name + "\",\"pinyin\":\"" + pinyin + "\",\"durl\":\"" + durl + "\",\"size\":\"" + size + "\"}");
      else {
        res.append("{\"name\":\"" + name + "\",\"pinyin\":\"" + pinyin + "\",\"durl\":\"" + durl + "\",\"size\":\"" + size + "\"},");
      }

    }

    res.append("]}}");
    System.out.println(res);
  }
}

二、xml文件

<?xml version="1.0" encoding="UTF-8"?>
<maps>
  <version>
    <city code="010">
      <name>北京</name>
      <pinyin>BeiJing</pinyin>
      <durl>http://114.247.50.22:8081/mapdown/citys/BeiJing.zip</durl>
      <size>24736893</size>
    </city>
    <city code="021">
      <name>上海</name>
      <pinyin>ShangHai</pinyin>
      <durl>http://114.247.50.22:8081/mapdown/citys/ShangHai.zip</durl>
      <size>42637020</size>
    </city>
  </version>
</maps>

三、json结果

  {"maps":{"version":[{"name":"北京","pinyin":"BeiJing","durl":"http://114.247.50.
                       22:8081/mapdown/citys/BeiJing.zip","size":"24736893"},
                      {"name":"上海","pinyin":"ShangHai","durl":"http://114.247.50.
                       22:8081/mapdown/citys/ShangHai.zip","size":"42637020"}
                     ]
           }
   }