简单XML序列化+构建器模式

Question

我在构造函数中有一个带有10+参数的类，我想实现一个生成器模式。同时，我希望使用简单的XML序列化从XML文件构建对象。有什么方法可以做到这一点吗？

import org.simpleframework.xml.*;

public class Example {

    @Element(name = "field-1", required = false)
    private final int field1;
    @Element(name = "field-2")
    private final int field2;
    [...]

    public simpleXMLConstructor(
            @Element(name = "field-1", required = false) int field1,
            @Element(name = "field-2") int field2,
            [...]) {
        this.field1 = field1;
        this.field2 = field2;
        [...]
    }

}

Answer 1

据我所知，对于任何XML库，您都没有任何特定的选择。我推荐使用GitHub上提供的Scilca XML Progression (SXP)包。为了编写对象序列化的代码(您知道要创建哪个对象)，下面是一个简单的实现，

import org.scilca.sxp.*; 
import org.scilca.sxp.exceptions.*;

public class main{
    class XmlSerialization{.....} // We'll serialize this and
    class XmlS2 {}

    public static void main(String[] args){
        // Write Data
        Node rootNode = new XMLNode("ObjectSerializationData");

        XMLNode firstObject = rootNode.add("XmlSerialization");
        firstObject.add("IntField1").setValue("1");
        firstObject.add("StringField2").setValue("strObject");

        XMLNode secondObject = rootNode.add("XmlS2");
        secondObject.add("IntField1").setValue("2"); // Added a element with a value
        secondObject.add("BoolField2").setValue("false");

        XMLNode thirdObject = rootNode.add("XmlSerialization");
        thirdObject.add("IntField1").setValue("@null");
        thirdObject.add("StringField2").setValue("str");

        Document XmlDocument = new Document(rootNode);
        Writer w = (Writer) XmlDocument.getWriter();
        w.saveXML("D:/file.txt");

        System.gc();

        // Read and Deserialize

        XMLReader xr = new XMLReader("D:/file.txt");
        Document newXml = xr.parseDocument();

        List<Node> XmlS1Nodes = newXml.searchMatches("XmlSerialization");
        List<Node> XmlS2Nodes = newXml.searchMatches("XmlS2");


        Node firstObject = XmlS1Nodes.get(0);
        int field1 = (int) Double.parseDouble(firstObject.getAllChildren().get(0));

        // Like this get all field and construct objects

        }

}