摘要：将Java对象序列化成XML格式，将XML反序列化还原为Java对象。

一：创建Maven工程，引入xstream依赖：

<!--xstream--><dependency><groupId>com.thoughtworks.xstream</groupId><artifactId>xstream</artifactId><version>1.4.4</version></dependency>

二：创建Java序列化为XML格式、XML反序列化为Java对象的类：

package cn.micai.base.io;import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;import java.io.IOException;/*** @Auther: zhaoxinguo* @Date: 2018/8/23 10:48* @Description: 将Java对象序列化成XML格式，将XML反序列化还原为Java对象*/
public class XmlSerializeDeserializeMain {/*** 将Java对象序列化成XML格式* @param employee* @return* @throws IOException*/public static String serialize(Employee employee){// 将employee对象序列化为XMLXStream xStream = new XStream(new DomDriver());// 设置employee类的别名xStream.alias("employee", Employee.class);String personXml = xStream.toXML(employee);return personXml;}/*** 将XML反序列化还原为Java对象* @param personXml* @return*/public static Employee deserialize(String personXml) {// 将employee对象序列化为XMLXStream xStream = new XStream(new DomDriver());Employee employee = (Employee) xStream.fromXML(personXml);return employee;}public static void main(String [] args) {Employee employee = new Employee();employee.setEmployeeId(1);employee.setEmployeeName("赵新国");employee.setDepartment("软件工程师");// 序列化String serialize = serialize(employee);System.out.println(serialize);// 反序列化Employee deserialize = deserialize(serialize);System.out.println(deserialize.toString());}}

三：创建Employee实体对象

package cn.micai.base.io;import java.io.Serializable;/*** 描述：* <p>**     transient使用小结*     1.一旦变量被transient修饰，变量将不再是对象持久化的一部分，该变量内容在序列化后无法获得访问。*     2.transient关键字只能修饰变量，而不能修饰方法和类。注意，本地变量是不能被transient关键字修饰的。变量如果是用户自定义类变量，则该类需要实现Serializable接口。*     3.被transient关键字修饰的变量不再能被序列化，一个静态变量不管是否被transient修饰，均不能被序列化。** @author: 赵新国* @date: 2018/6/7 12:10*/
public class Employee implements Serializable {private static final long serialVersionUID = 1L;private int employeeId;private String employeeName;/*** 使用transient关键字，表示该字段不序列化*/private transient String department;public int getEmployeeId() {return employeeId;}public void setEmployeeId(int employeeId) {this.employeeId = employeeId;}public String getEmployeeName() {return employeeName;}public void setEmployeeName(String employeeName) {this.employeeName = employeeName;}public String getDepartment() {return department;}public void setDepartment(String department) {this.department = department;}@Overridepublic String toString() {return "Employee{" +"employeeId=" + employeeId +", employeeName='" + employeeName + '\'' +", department='" + department + '\'' +'}';}
}

四：运行测试：

五：异常提醒：

上面的异常信息说明了，在解析XML的时候，找不到对应的实体对象，所以会报上面的错误，那我们就在解析的时候，告诉xStream，是解析那个对象，修改解析XML代码如下：

/*** 将XML反序列化还原为Java对象* @param personXml* @return*/public static Employee deserialize(String personXml) {// 将employee对象序列化为XMLXStream xStream = new XStream(new DomDriver());xStream.alias("employee", Employee.class);Employee employee = (Employee) xStream.fromXML(personXml);return employee;}

六：最终运行结果：