XSTREAM framework use skills and common questions answers

The XSTREAM framework is an open source framework for mutual conversion between Java objects and XML.It provides a simple and powerful API, allowing developers to quickly sequence the Java object to XML, or to sequence of XML to the Java object.This article will introduce some use skills of some XSTREAM frameworks and answer some common questions. 1. Use skills 1. Add dependencies To use the XSTREAM framework, we need to add related dependencies to the project.You can build the following relying on the pom.xml of the project through the construction tools such as Maven: <dependency> <groupId>com.thoughtworks.xstream</groupId> <artifactId>xstream</artifactId> <version>1.4.17</version> </dependency> 2. Create xstream objects To use the XSTREAM framework in the code, you first need to create an XSTream object.You can directly instantiated `com.thoughtworks.xstream.xstream` class, or it can be created by the factory class of the factory class through the` com.thoughtworks.xstreamfactory`. import com.thoughtworks.xstream.XStream; // Directly regularized XStream xstream = new XStream(); // Create through the factory class XStream xstream = XStreamFactory.getXStream(); 3. Serialization Java object is XML It is very simple to sequence the Java object to XML with the XSTREAM framework.Just call the `toxml` method of the XSTREAM object and pass it into the serialized Java object. String xml = xstream.toXML(object); 4. Reverse serialization XML is Java object It is also easy to transform XML's back serving to Java objects.Just call the `Fromxml` method of the XSTREAM object, and pass it into the existing XML strings to be serialized. Object object = xstream.fromXML(xml); 5. Customized object alias If you want to make the generated XML more easy to read or follow specific naming specifications, you can set aliases for the Java object.Alias will be used in the generated XML to indicate the name of the Java class. xstream.alias("alias", ClassName.class); 6. Customized property name The attributes of the class will be represented by its name.If you want to make the attribute names in XML different from the attribute names in the Java class, you can set aliases for the attribute. xstream.aliasField("alias", ClassName.class, "fieldName"); 7. Ignore attributes If you don't want to contain certain attributes in the generated XML, you can ignore these attributes. xstream.omitField(ClassName.class, "fieldName"); 8. Processing collection object The XSTREAM framework provides the API that processs the collection object.You can use the method of `addimplicitCollection` to tell XSTREAM how to handle the set attribute. xstream.addImplicitCollection(ClassName.class, "collectionName"); 9. Processing date When the date attribute sequences to XML, you can use the `registerConverter` method to set a specific converter for the date attribute. xstream.registerConverter(new DateConverter("yyyy-MM-dd", new String[]{"yyyy-MM-dd"})); 2. Frequent questions and answers 1. How to deal with the problem of cycle reference? By default, the XSTREAM framework does not support the problem of processing cycle reference.However, you can use the `CircularReferenceHandler` interface to process the cycle reference, which defines the method of customized processing cycle reference. xstream.setCircularReferenceHandler(new YourCircularReferenceHandler()); 2. How to deal with instances of different types of names? If the element name in XML does not match the Java class when the XML is not matched, it can be processed by implementing the `Mapper` interface or using the`@xstreamalias' annotation. @XStreamAlias("elementName") public class ClassName { // ... } // or xstream.setMapper(new YourMapper()); 3. How to use the XSTREAM framework to handle the CDATA mark? By default, the XSTREAM framework does not automatically handle the CDATA mark.But you can use `@xstreamcdata` annotations. public class ClassName { @XStreamCDATA private String cdataContent; } In summary, the XSTREAM framework is a very practical Java object and XML interoperability tool.Through the above use skills and common questions, I believe you can better use the XSTREAM framework to achieve mutual conversion between Java objects and XML.If you need more help, you can check the official documentation of the XSTREAM framework or access related development communities.