xstream实现xml和java bean 互相转换

news2024/11/17 23:54:06

pom引用

		<dependency>
			<groupId>com.thoughtworks.xstream</groupId>
			<artifactId>xstream</artifactId>
			<version>1.4.20</version>
		</dependency>

java bean 类

import com.thoughtworks.xstream.annotations.XStreamAlias;
import lombok.Data;
import lombok.ToString;

import java.util.List;

@Data
@ToString
@XStreamAlias("person")
public class Person {

    private String name;
    private int age;

    private List<String> hobbies;

    private List<Person> family;

}

XML 转换工具类

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
import com.thoughtworks.xstream.security.AnyTypePermission;
import lombok.extern.slf4j.Slf4j;

@Slf4j
public class XMLUtil {
    private XMLUtil() {
    }

    public static Object convertFromXML(Class<?> clazz, String xml) {

        XStream xStream = new XStream(new DomDriver());
        // 避免 com.thoughtworks.xstream.security.ForbiddenClassException异常
        xStream.addPermission(AnyTypePermission.ANY);
        // 处理注解
        xStream.processAnnotations(clazz);
        // 将XML字符串转为bean对象
        return xStream.fromXML(xml);
    }

    public static String convertToXml(Object obj) {
        XStream xs = new XStream(new DomDriver());
        xs.processAnnotations(obj.getClass());
        return xs.toXML(obj);
    }
}

测试类

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import will.tools.model.Person;
import will.tools.util.XMLUtil;

import java.util.ArrayList;
import java.util.List;

@SpringBootTest
public class XMLUtilTests {
    @Test
    public void test() {
        Person p2 = getPerson();
        String xml = XMLUtil.convertToXml(p2);
        System.out.println("对象转xml");
        System.out.println(xml);

//        String xml =
//
//                "<person>\n" +
//                "  <name>黄蓉</name>\n" +
//                "  <age>18</age>\n" +
//                "  <hobbies>\n" +
//                "    <string>sing</string>\n" +
//                "    <string>dance</string>\n" +
//                "  </hobbies>\n" +
//                "  <family>\n" +
//                "    <person>\n" +
//                "      <name>郭靖</name>\n" +
//                "      <age>20</age>\n" +
//                "      <hobbies>\n" +
//                "        <string>射箭</string>\n" +
//                "        <string>爬山</string>\n" +
//                "      </hobbies>\n" +
//                "    </person>\n" +
//                "  </family>\n" +
//                "</person>";

        Person p = (Person) XMLUtil.convertFromXML(Person.class, xml);
        System.out.println("xml转对象");
        System.out.println(p.toString());
    }

    private static Person getPerson() {
        Person p1 = new Person();
        p1.setAge(20);
        p1.setName("郭靖");
        List<String> lst = new ArrayList<>();
        lst.add("射箭");
        lst.add("爬山");
        p1.setHobbies(lst);

        Person p2 = new Person();
        p2.setAge(18);
        p2.setName("黄蓉");
        List<String> hobbyList = new ArrayList<>();
        hobbyList.add("sing");
        hobbyList.add("dance");
        p2.setHobbies(hobbyList);

        List<Person> list = new ArrayList<>();
        list.add(p1);
        p2.setFamily(list);
        return p2;
    }
}

执行结果

对象转xml
<person>
  <name>黄蓉</name>
  <age>18</age>
  <hobbies>
    <string>sing</string>
    <string>dance</string>
  </hobbies>
  <family>
    <person>
      <name>郭靖</name>
      <age>20</age>
      <hobbies>
        <string>射箭</string>
        <string>爬山</string>
      </hobbies>
    </person>
  </family>
</person>

xml转对象

Person(name=黄蓉, age=18, hobbies=[sing, dance], family=[Person(name=郭靖, age=20, hobbies=[射箭, 爬山], family=null)])