XML到JSON在Java中使用xml属性进行转换 [英] XML to JSON Conversion in java with xml attributes

问题描述

我有一个xml和xml属性，如下所示。现在，当我将这个XML转换为JSON时，它失败了，因为BvdState中存在一个属性。我不知道如何处理这个？

 <州> 
< Number> 3< / Number> 
<名称> MotherBIG< / Name> 
< BvdState i：nil =true/> 
< HistoryState> 3< / HistoryState> 
< / State> 
  

解决方案

你可以用这种方式处理这个属性 - / p>

  inputStream = XMLtoJsonConverter.class.getClassLoader（）。getResourceAsStream（simple.xml）; 
 String xml = IOUtils.toString（inputStream）; 
 System.out.println（org.json.XML.toJSONObject（xml）.toString（4））; 
  

如果您想深入xml以查看json序列化，请查看此 。在使用这个时，你只是想创建一个pojo类的xml结构，而不仅限于此。

请看下面的代码 -

$ b JacksonDeserializer.java -

  import com.fasterxml.jackson.databind.DeserializationFeature; 
 import com.fasterxml.jackson.databind.module.SimpleModule; 
 import com.fasterxml.jackson.dataformat.xml.XmlMapper; 
 import java.io.IOException; 
 import java.net.URL; 
 import java.util.List; 
 
 
公共类JacksonDeserializer {
 
私人列表<项目>项目; 
 private XmlMapper xmlMapper = null; 
 private SimpleModule module = null; 
私人频道ch = null; 
 
公共列表<项目> getItem（）{
 return item; 
} 
 
 public void setItem（List< Item> item）{
 this.item = item; 
} 
 
 public void readXML（）throws IOException {
 xmlMapper = new XmlMapper（）; 
 module = new SimpleModule（）; 
 ch =新频道（）; 
 module.addDeserializer（List.class，ch.new ChannelDeserializer（））; 
 xmlMapper.registerModule（module）; 
 xmlMapper.configure（DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES，false）; 
 URL url =新的URL（url上的一些xml数据）; 
 Rss rss = xmlMapper.readValue（url，Rss.class）; //你也可以提供xml文件
 Channel channel = rss.getChannel（）; 
 JacksonDeserializer obj = new JacksonDeserializer（）; 
 item = channel.getItem（）; 
 obj.setItem（item）; 
} 
} 
  

Rss.java -

 公共类Rss {
 
私人频道频道; 
 
 public Rss（）{
} 
 
公共频道getChannel（）{
 return channel; 
} 
 
 public void setChannel（Channel channel）{
 this.channel = channel; 
} 
} 
  

Channel.java -

  import com.fasterxml.jackson.core.JsonParser; 
 import com.fasterxml.jackson.core.JsonProcessingException; 
 import com.fasterxml.jackson.databind.DeserializationContext; 
 import com.fasterxml.jackson.databind.JsonDeserializer; 
 import com.fasterxml.jackson.databind.JsonNode; 
 import java.io.IOException; 
 import java.util.ArrayList; 
 import java.util.List; 
 
公开课频道{
 
私人列表<项目> item = new ArrayList（）; 
 
公共频道（）{
} 
 
公共列表<项目> getItem（）{
 return item; 
} 
 
 public void setItem（List< Item> item）{
 this.item = item; 
} 
 
公共类ChannelDeserializer扩展了JsonDeserializer< List< Item>> {
 
 @Override 
 public List< Item> deserialize（JsonParser jp，DeserializationContext arg1）抛出IOException，JsonProcessingException {
 JsonNode jsonNode = jp.getCodec（）。readTree（jp）; 
 
 String title = jsonNode.get（title）。asText（）; 
 String link = jsonNode.get（link）。asText（）; 
 String description = jsonNode.get（description）。asText（）; 
 String pubDate = jsonNode.get（pubDate）。asText（）; 
 String source = jsonNode.get（source）。path（）。asText（）; 
 Item i = new Item（title，link，description，pubDate，source）; 
 item.add（i）; 
退货项目; 
} 
} 
} 
  

Item.java -

  public class Item {
 
 private String title; 
私有字符串链接; 
私有字符串描述; 
 private String pubDate; 
私人字符串来源; 
 $ b $ public Item（）{
} 
 
 public Item（String title，String link，String description，String pubDate，String source）{
 this .title = title; 
 this.link = link; 
 this.description = description; 
 this.pubDate = pubDate; 
 this.source = source; 
} 
 
 public String getTitle（）{
 return title; 
} 
 
 public void setTitle（String title）{
 this.title = title; 
} 
 
 public String getLink（）{
 return link; 
} 
 
 public void setLink（String link）{
 this.link = link; 
} 
 
 public String getSource（）{
 return source; 
} 
 
 public void setSource（String source）{
 this.source = source; 
} 
 
 public String getDescription（）{
 return description; 
} 
 
 public void setDescription（String description）{
 this.description = description; 
} 
 
 public String getPubDate（）{
 return pubDate; 
} 
 
 public void setPubDate（String pubDate）{
 this.pubDate = pubDate; 
} 
} 
  

I have one xml with xml attributes as below. Now when i convert this xml to JSON it fails because of an attribute present into BvdState. I dont know how to deal with this ?

<State>
    <Number>3</Number>
    <Name>MotherBIG</Name>
    <BvdState i:nil="true"/>
    <HistoryState>3</HistoryState>
</State>

解决方案

You can deal with this attribute in this way -

inputStream = XMLtoJsonConverter.class.getClassLoader().getResourceAsStream("simple.xml");
String xml = IOUtils.toString(inputStream);
System.out.println(org.json.XML.toJSONObject(xml).toString(4));

If you want to go into depth of xml to json serialization look at this. while using this, you just want to create a pojo classes of xml structure nothing more than that.

Take a look at below code -

JacksonDeserializer.java -

import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import java.io.IOException;
import java.net.URL;
import java.util.List;


public class JacksonDeserializer {

    private List<Item> item;
    private XmlMapper xmlMapper = null;
    private SimpleModule module = null;
    private Channel ch = null;

    public List<Item> getItem() {
        return item;
    }

    public void setItem(List<Item> item) {
        this.item = item;
    }

    public void readXML() throws IOException {
        xmlMapper = new XmlMapper();
        module = new SimpleModule();
        ch = new Channel();
        module.addDeserializer(List.class, ch.new ChannelDeserializer());
        xmlMapper.registerModule(module);
        xmlMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        URL url = new URL("some xml data available on url");
        Rss rss = xmlMapper.readValue(url, Rss.class);//you can provide xml file also
        Channel channel = rss.getChannel();
        JacksonDeserializer obj = new JacksonDeserializer();
        item = channel.getItem();
        obj.setItem(item);
    }
}

Rss.java -

public class Rss {

    private Channel channel;

    public Rss() {
    }

    public Channel getChannel() {
        return channel;
    }

    public void setChannel(Channel channel) {
        this.channel = channel;
    }
}

Channel.java -

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonNode;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class Channel {

    private List<Item> item = new ArrayList();

    public Channel() {
    }

    public List<Item> getItem() {
        return item;
    }

    public void setItem(List<Item> item) {
        this.item = item;
    }

    public class ChannelDeserializer extends JsonDeserializer<List<Item>> {

        @Override
        public List<Item> deserialize(JsonParser jp, DeserializationContext arg1) throws IOException, JsonProcessingException {
            JsonNode jsonNode = jp.getCodec().readTree(jp);

            String title = jsonNode.get("title").asText();
            String link = jsonNode.get("link").asText();
            String description = jsonNode.get("description").asText();
            String pubDate = jsonNode.get("pubDate").asText();
            String source = jsonNode.get("source").path("").asText();
            Item i = new Item(title, link, description, pubDate, source);
            item.add(i);
            return item;
        }
    }
}

Item.java -

public class Item {

    private String title;
    private String link;
    private String description;
    private String pubDate;
    private String source;

    public Item() {
    }

    public Item(String title, String link, String description, String pubDate, String source) {
        this.title = title;
        this.link = link;
        this.description = description;
        this.pubDate = pubDate;
        this.source = source;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getLink() {
        return link;
    }

    public void setLink(String link) {
        this.link = link;
    }

    public String getSource() {
        return source;
    }

    public void setSource(String source) {
        this.source = source;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getPubDate() {
        return pubDate;
    }

    public void setPubDate(String pubDate) {
        this.pubDate = pubDate;
    }
}

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