XML字符串转换为Json字符串和XML字符串转换为Java对象

谁践踏了优雅 2024-04-23 02:46 127阅读 0赞

**记录**：384

**场景**：把XML字符串转换为Json字符串。把XML字符串转换为Java对象。

**版本：**JDK 1.8

**1.XML转换为JSON字符串**

**1.1引用Jar**

Jar包：hutool-all-5.8.12.jar

类位置：cn.hutool.json.XML

**1.2自定义封装方法**

public static String parseXml2JSONString(String xmlStr){
      JSONObject jsonObject = XML.toJSONObject(xmlStr);
      return jsonObject.toString();
    }

**2.XML字符串转换为Java对象**

**2.1引用Jar**

Jar包：rt.jar，jdk 1.8自带包。

类位置：

javax.xml.bind.JAXBContext

javax.xml.bind.Unmarshaller

**2.2自定义封装方法**

public static <T> T parseXml2Object(String xmlStr,Class<T> targetClass){
      JAXBContext jaxbContext = null;
      try {
        jaxbContext = JAXBContext.newInstance(targetClass);
        Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
        return (T) unmarshaller.unmarshal(new StringReader(xmlStr));
      } catch (JAXBException e) {
        e.printStackTrace();
      }
      return null;
    }

**3.测试main方法**

**3.1.main方法**

在main方法做测试验证。

public static void main(String[] args) throws JAXBException {
      String xml01 = getXml01();
      String xml02 = getXml02();
      //1.测试xml字符串转换为JSON字符串
      log.info("xml01转换为Json字符串:");
      log.info(parseXml2JSONString(xml01).toString());
      log.info("xml02转换为Json字符串:");
      log.info(parseXml2JSONString(xml02).toString());
      //2.测试xml字符串转换为Java对象
      log.info("xml01转换为Java对象:");
      DataDTO dataDTO =parseXml2Object(xml01,DataDTO.class);
      log.info(dataDTO.toString());
      log.info("xml02转换为Java对象:");
      DataListDTO dataListDTO =parseXml2Object(xml01,DataListDTO.class);
      log.info(dataListDTO.toString());
    }

**3.2.XML字符串**

**(1)字符串一**

**(2)字符串二**

<province>
      <provinceId>1</provinceId>
      <provinceName>浙江省</provinceName>
      <landArea>105500</landArea>
      <population>6577</population>
      <gross>7.77</gross>
      <city>
         <cityId>1</cityId>
         <cityName>杭州</cityName>
         <landArea>16850</landArea>
         <population>1237</population>
         <gross>1.81</gross>
         <cityDescribe>杭州是一个好城市</cityDescribe>
         <dataYear>2021</dataYear>
         <updateTime>2023-03-12 15:58:59</updateTime>
      </city>
      <city>
        <cityId>2</cityId>
        <cityName>杭州</cityName>
        <landArea>16850</landArea>
        <population>1237</population>
        <gross>1.88</gross>
        <cityDescribe>杭州是一个好城市</cityDescribe>
        <dataYear>2022</dataYear>
        <updateTime>2023-03-12 15:58:59</updateTime>
      </city>
    </province>

**4.支撑对象和数据**

**4.1获取数据方法getXml01()**

public static String getXml01(){
     return "<province>\n" +
        "    <provinceId>1</provinceId>\n" +
        "    <provinceName>浙江省</provinceName>\n" +
        "    <landArea>105500</landArea>\n" +
        "    <population>6577</population>\n" +
        "    <gross>7.77</gross>\n" +
        "    <city>\n" +
        "        <cityId>1</cityId>\n" +
        "        <cityName>杭州</cityName>\n" +
        "        <landArea>16850</landArea>\n" +
        "        <population>1237</population>\n" +
        "        <gross>1.88</gross>\n" +
        "        <cityDescribe>杭州是一个好城市</cityDescribe>\n" +
        "        <dataYear>2022</dataYear>\n" +
        "\t\t<updateTime>2023-03-12 15:58:59</updateTime>\n" +
        "    </city>\n" +
        "</province>";
    }

**4.2获取数据方法getXml02()**

public static String getXml02(){
     return "<province>\n" +
         "    <provinceId>1</provinceId>\n" +
         "    <provinceName>浙江省</provinceName>\n" +
         "    <landArea>105500</landArea>\n" +
         "\t<population>6577</population>\n" +
         "    <gross>7.77</gross>\n" +
         "    <city>\n" +
         "        <cityId>1</cityId>\n" +
         "        <cityName>杭州</cityName>\n" +
         "        <landArea>16850</landArea>\n" +
         "        <population>1237</population>\n" +
         "        <gross>1.81</gross>\n" +
         "        <cityDescribe>杭州是一个好城市</cityDescribe>\n" +
         "        <dataYear>2021</dataYear>\n" +
         "\t\t<updateTime>2023-03-12 15:58:59</updateTime>\n" +
         "    </city>\n" +
         "\t<city>\n" +
         "        <cityId>2</cityId>\n" +
         "        <cityName>杭州</cityName>\n" +
         "        <landArea>16850</landArea>\n" +
         "        <population>1237</population>\n" +
         "        <gross>1.88</gross>\n" +
         "        <cityDescribe>杭州是一个好城市</cityDescribe>\n" +
         "        <dataYear>2022</dataYear>\n" +
         "\t\t<updateTime>2023-03-12 15:58:59</updateTime>\n" +
         "    </city>\n" +
         "</province>";
    }

**4.3 DataListDTO对象**

@Data
    @XmlAccessorType(XmlAccessType.FIELD)
    @XmlRootElement(name = "province")
    @XmlType( propOrder ={"provinceId","provinceName","landArea","population","gross","city"})
    public class DataListDTO implements Serializable {
      private Long provinceId;
      private String provinceName;
      private Double landArea;
      private Long population;
      private Double gross;
      private List<CityDTO> city;
    }

**4.4DataDTO对象**

@Data
    @XmlAccessorType(XmlAccessType.FIELD)
    @XmlRootElement(name = "province")
    @XmlType( propOrder ={"provinceId","provinceName","landArea","population","gross","city"})
    public class DataDTO implements Serializable {
      private Long provinceId;
      private String provinceName;
      private Double landArea;
      private Long population;
      private Double gross;
      private CityDTO city;
    }

**4.5CityDTO对象**

@Data
    public class CityDTO implements Serializable {
      private Long cityId;
      private String cityName;
      private Double landArea;
      private Long population;
      private Double gross;
      private String cityDescribe;
      private String dataYear;
      private String updateTime;
    }

以上，感谢。

2023年3月12日