Question

我试图用Jackson xml在POJO中反序列化那个奇怪的（格式错误的？）xml：

<module id="1">
    <field id="1">
      <title>test</title>
      <value>test value</value>
    </field>
    <field id="6">
      <title>test2</title>
      <value>first value</value>
      <value checked="false">second value</value>
    </field>
</module>

这是我到目前为止使用的模型：

public class Field{

    @JacksonXmlProperty(isAttribute = true)
    private String id;

    @JacksonXmlProperty(localName = "title")
    private String title;

    @JsonDeserialize(as=Value.class)
    private Value value;
}


public class Value{

    @JacksonXmlProperty(isAttribute = true)
    private String checked;

    @JacksonXmlText(value = true)
    private String value;
}

到目前为止，除了“value”标签之外，我几乎可以阅读所有内容。如果只有一个“value”标签，我可以拥有它，但是一旦有多个“value”标签，我只能得到最后一个！当然，我需要得到一切。

我也尝试过放置一个Value类数组，但看起来它已经崩溃了。

任何帮助都将非常感谢^^ 谢谢！

Answer 1

将值作为列表或数组，并使用@JacksonXmlElementWrapper注释。试试这个。

import java.io.File;
import java.util.List;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlElementWrapper;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlText;

@JacksonXmlRootElement
class Module {
    @JacksonXmlProperty(isAttribute = true)
    private String id;

    @JacksonXmlProperty(localName = "field")
    @JacksonXmlElementWrapper(useWrapping=false)
    List<Field> field;

    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    public List<Field> getField() {
        return field;
    }
    public void setField(List<Field> field) {
        this.field = field;
    }
    @Override
    public String toString() {
        return "Module [id=" + id + ", " + field + "]";
    }
}

class Field {

    @JacksonXmlProperty(isAttribute = true)
    private String id;

    @JacksonXmlProperty(localName = "title")
    private String title;

    @JacksonXmlProperty(localName = "value")
    @JacksonXmlElementWrapper(useWrapping=false)
    private List<Value> value;

    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public List<Value> getValue() {
        return value;
    }
    public void setValue(List<Value> value) {
        this.value = value;
    }
    @Override
    public String toString() {
        return "Field [id=" + id + ", title=" + title + ", value=" + value
                + "]";
    }
}

class Value{

    @JacksonXmlProperty(isAttribute = true)
    private String checked;

    @JacksonXmlText(value = true)
    private String value;

    public String getChecked() {
        return checked;
    }
    public void setChecked(String checked) {
        this.checked = checked;
    }
    public String getValue() {
        return value;
    }
    public void setValue(String value) {
        this.value = value;
    }
    @Override
    public String toString() {
        return "Value [checked=" + checked + ", " + value + "]";
    }
}

public class JacksonXmlParser {

    public static void main(String[] args) throws Exception {
        ObjectMapper xmlMapper = new XmlMapper();
        Module obj = xmlMapper.readValue(new File("module.xml"), Module.class);
        System.out.println(obj);
    }

}

Answer 2

你的类字段存在缺陷，它应该包含一个Value列表而不是一个值，替换

 <html>
 <body>
 <table class="calc" cellpadding=2> 
 <tr>
        <td><input type="button" class="calc" id="screen1" value="0"></td>
        <td><input type="button" class="calc" id="screen2" value="0"></td>
        <td><input type="button" class="calc" id="screen3" value="0"></td>
        </tr>
    </table>
    <table class="calc" cellpadding=2>
    <tr> 
        <td><button type="button" onclick="pushButton(1)" value="Call2Functions">1</td>
        <td><button type="button" onclick="pushButton(2)" value="Call2Functions">2</td>
        <td><button type="button" onclick="pushButton(3)" value="Call2Functions">3</td>
    </tr>
    <tr>
      <td><input type="radio" id="Check1" name="radio" onclick="check(1)">button1</td>
      <td><input type="radio" id="Check2" name="radio" onclick="check(2)">button2</td>
      <td><input type="radio" id="Check3" name="radio" onclick="check(3)">button3</td>
    </tr>
   </table>


        <script> 
        function check(value){
          if(document.getElementById("Check"+value).checked)
          {
            buttonValue = value;
          }
        }
            function pushButton(addValue) {
    if (buttonValue == 'C') {
        document.getElementById('screen').value = '0';
    }
    else {//this is where most changes occured
        var x= document.getElementById('screen'+buttonValue).value 
        x =parseInt(x)+ parseInt(addValue);
        document.getElementById('screen'+buttonValue).value=x;
        localStorage.setItem('answer', x);
    }
}

    function calculate(equation) {
        var answer = eval(equation);
        document.getElementById('screen'+buttonValue).value = answer;
    }
                         </script>
                         </body>
                         </html>

带

private Value value;

并且在您的xml中，您有一个名为private List<Value> values;的标记，而在字段中存在与<title>..</title>不匹配的标记

juste replace

titre

带

@JacksonXmlProperty(localName = "titre")

杰克逊奇怪的XML反序列化

2 个答案: