特点
简化的API;
无映射文件;
高性能,低内存占用;
整洁的XML;
不需要修改对象，支持内部私有字段；
不需要setter/getter方法,final字段;
提供序列化接口;
自定义转换类型策略;
详细的错误诊断;
Xstream常用注解
@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
示例
1. 解析XML工具类
import com.thoughtworks.xstream.XStream;import com.thoughtworks.xstream.io.xml.DomDriver;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import java.io.*;public class XmlUtil { private static final Logger logger = LoggerFactory. getLogger(XmlUtil.class); public static String toXml(Object obj) { //XStream xstream=new XStream(); //默认使用xpp解析器 //指定编码解析器 XStream xstream = new XStream(new DomDriver("utf-8")); //启用注解识别 xstream.processAnnotations(obj.getClass()); return xstream.toXML(obj); } public static T toBean(String xmlStr, Class cls) { XStream xstream = new XStream(); xstream.processAnnotations(cls); T obj = (T) xstream.fromXML(xmlStr); return obj; } public static boolean toXMLFile(Object obj, String absPath, String fileName) { String strXml = toXml(obj); String filePath = absPath + fileName; File file = new File(filePath); if (!file.exists()) { try { file.createNewFile(); } catch (IOException e) { logger.error("file creation failed, cause is {}", e); return false; } } OutputStream ous = null; try { ous = new FileOutputStream(file); ous.write(strXml.getBytes()); ous.flush(); } catch (Exception e1) { logger.error("file write failed, cause is {}", e1); return false; } finally { if (ous != null) try { ous.close(); } catch (IOException e) { e.printStackTrace(); } } return true; } public static T toBeanFromFile(String absPath, String fileName, Class cls) throws Exception { String filePath = absPath + fileName; InputStream ins = null; try { ins = new FileInputStream(new File(filePath)); } catch (Exception e) { throw new Exception("read {" + filePath + "} file failed！", e); } XStream xstream = new XStream(); xstream.processAnnotations(cls); T obj = null; try { obj = (T) xstream.fromXML(ins); } catch (Exception e) { throw new Exception("parse {" + filePath + "} file failed！", e); } if (ins != null) ins.close(); return obj; }} 2. 编写Teacher类
import com.thoughtworks.xstream.annotations.XStreamAlias;import com.thoughtworks.xstream.annotations.XStreamAsAttribute;import com.thoughtworks.xstream.annotations.XStreamImplicit;import java.util.List;@XStreamAlias(value = "teacher")public class Teacher { @XStreamAsAttribute private String name; @XStreamAsAttribute private String phone; @XStreamAsAttribute private int age; @XStreamImplicit(itemFieldName = "student") private List students; public Teacher() { } public Teacher(String name, String phone, int age, List students) { this.name = name; this.phone = phone; this.age = age; this.students = students; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPhone() { return phone; } public void setPhone(String phone) { this.phone = phone; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public List getStudents() { return students; } public void setStudents(List students) { this.students = students; }} 3. 编写Student类
import com.thoughtworks.xstream.annotations.XStreamAlias;import com.thoughtworks.xstream.annotations.XStreamAsAttribute;@XStreamAlias(value = "student")public class Student { @XStreamAsAttribute private String name; @XStreamAsAttribute private int age; @XStreamAsAttribute private String address; public Student() { } public Student(String name, int age, String address) { this.name = name; this.age = age; this.address = address; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; }}4. Test测试类
import java.util.ArrayList;import java.util.List;public class Test { public static void main(String[] args) { Student student1 = new Student("Aaron", 24, "广州"); Student student2 = new Student("Abel", 23, "北京"); List students = new ArrayList<>(); students.add(student1); students.add(student2); Teacher teacher = new Teacher("Dave", "020-123456", 46, students); String xml = XmlUtil.toXml(teacher); System.out.println(xml); }} 5. 运行结果
以上就是xml解析工具包 Xstream的示例代码详解的详细内容，更多请关注考高分网其它相关文章！
