1.Xstream介绍
官网:https://x-stream.github.io/tutorial.html
介绍:XStream 对象序列化和反序列化为 XML的一个JAVA类库。JDK 1.4以上适用。
PS:与JAXB相比,Xstream更好用一些,像XStreamImplicit这种注解,我在JAXB没找到
2.Xstream注解使用说明
@XStreamAlias(“message”) 别名注解
作用目标: 类,字段
@XStreamImplicit 隐式集合
@XStreamImplicit(itemFieldName=“part”)
作用目标: 集合字段
@XStreamConverter(SingleValueCalendarConverter.class) 注入转换器
作用目标: 对象
@XStreamAsAttribute 转换成属性
作用目标: 字段
@XStreamOmitField 忽略字段
作用目标: 字段
使用注解时需要开启:
xstream.autodetectAnnotations(true);
3.使用教程
<!--xml报文组装、解析;最新版本1.4.20已修复反序列化漏洞-->
<dependency>
<groupId>com.thoughtworks.xstream</groupId>
<artifactId>xstream</artifactId>
<version>1.4.20</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
@AllArgsConstructor
@XStreamAlias("Class")
@Data
public class Class {
@XStreamAlias("NUM")
private int num;
@XStreamImplicit
private List<Student> StudentList;
}
@AllArgsConstructor
@XStreamAlias("Student")
@Data
public class Student {
@XStreamAlias("Name")
private String name;
@XStreamAlias("Age")
private String age;
}
@Slf4j
public class xmlUtils {
public static String objToXML(Object xmlData) {
String postDataXML;
try {
//指定解析编码为UTF-8,并解决XStream对出现双下划线的bug
XStream xStreamForReqData = new XStream(new DomDriver("UTF-8", new
XmlFriendlyNameCoder("-_", "_")));
//开启当前将被序列化为XML的类的注解
xStreamForReqData.processAnnotations(xmlData.getClass());
//将要提交给API的数据对象转换成XML格式数据Post给API
String postDataXMLOld = xStreamForReqData.toXML(xmlData);
postDataXML = postDataXMLOld.replace(""", "\"");
//为Bean转换后的XML加上头信息
//postDataXML = XML_TAG + postDataXML;
} catch (Exception e) {
log.error("Object converts into XML go wrong", e);
throw e;
}
return postDataXML;
}
public static void main(String[] args) {
List<Student> studentList = new ArrayList<>();
studentList.add(new Student("小虎", "18"));
studentList.add(new Student("小华", "18"));
studentList.add(new Student("小李", "19"));
Class aClass = new Class(studentList.size(),studentList);
System.out.println(objToXML(aClass));
}
}
最后的结果:
<Class>
<NUM>3</NUM>
<Student>
<Name>小虎</Name>
<Age>18</Age>
</Student>
<Student>
<Name>小华</Name>
<Age>18</Age>
</Student>
<Student>
<Name>小李</Name>
<Age>19</Age>
</Student>
</Class>