java的msgpack反序列化包 java xml反序列化

JAXB对简单类型组成的纯数据对象的XML序列化和反序列化支持很好，对嵌套类对象的支持也同样简单明晰：

嵌套类对象的代码如下：

public class NestedObject
{
   public NestedObject()
   {
   }

   public PureDataObject pdo;
   public String groupName;
}

演示代码如下：

import javax.xml.bind.JAXB;

public class XmlSerialize
{
   public XmlSerialize()
   {
   }

   public void runJAXBNestedObject()
   {
      String xmlFile = ".\\jaxb4nested.xml";
      NestedObject no4Out = new NestedObject();
      no4Out.groupName = "Nested Object";
      no4Out.pdo = new PureDataObject(127, "Hello, Nested !", 3.3333, true);
      JAXB.marshal(no4Out, xmlFile);

      NestedObject no4In = JAXB.unmarshal(xmlFile, no4Out.getClass());
      System.out.println("group name: " + no4In.groupName);
      System.out.println("id: " + no4In.pdo.id);
      System.out.println("name: " + no4In.pdo.name);
      System.out.println("value: " + no4In.pdo.value);
      System.out.println("valid: " + no4In.pdo.valid);
   }

   public static void main(String[] args)
   {
      XmlSerialize xs = new XmlSerialize();
      xs.runJAXBNestedObject();
   }

}

创建的XML文件内容如下：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<nestedObject>
    <pdo>
        <id>127</id>
        <name>Hello, Nested !</name>
        <value>3.3333</value>
        <valid>true</valid>
    </pdo>
    <groupName>Nested Object</groupName>
</nestedObject>

屏幕上输出结果如下：

group name: Nested Object
id: 127
name: Hello, Nested !
value: 3.3333
valid: true

可见，对于嵌套对象，JAXB同样支持得很好。

JAXB真是好东西！