Apache Commons Digestter to implement data verification and processing skills

Apache Commons Digest is a popular Java library that is used to resolve XML documents as Java objects.It provides a simple and powerful way to analyze and process XML data.In this article, we will introduce some techniques to implement data verification and processing using Apache Commons Digerster. 1. Configure the DIGESTER object: First of all, we need to create a DIGESTER object and configure it to meet our needs.You can use some methods to call the DIGESTER class to achieve configuration, such as setting XML rules files, setting basic paths, etc. Digester digester = new Digester(); DIGESTER.SETVALIDATING (TRUE); // Enable the verification disaster.seterrorhandler (new myerrorhandler ()); // Set custom error processor DIGESTER.AddObjectCreate ("root", myObject.class); // Create root objects 2. Create root objects: Use the `addObjectCreate ()` method to specify the root elements and create the corresponding Java object. 3. Set the attribute: Use the method of `addsetproperties ()` to easily set the attributes of the XML element to the Java object. DIGESTER.ADDSETPROPERTIES ("root", "name", "name"); // Set the name properties 4. Analyze the sub -element: Use the `addcallMethod ()` method to analyze the XML element and call the corresponding Java method for processing. digester.addCallMethod("root/child", "addChild", 2); DIGESTER.ADDCALLPARAM ("Root/Child", 0, "ID"); // Pass the ID parameter digestter.addcallparam ("root/child", 1, "value"); // pass the value parameter 5. Start analysis: Use the `PARSE ()` method to analyze the XML document as the Java object. MyObject myObject = (MyObject) digester.parse(xmlFile); 6. Custom error processing: You can create a custom error processor by implementing the `organic. public class MyErrorHandler implements ErrorHandler { public void error(SAXParseException e) throws SAXException { // Error processing logic } // Implement other methods } Through the above steps, we can use Apache Commons Digerster to easily achieve data verification and processing.It provides a flexible and simple way to analyze and process XML data so that we can focus on the realization of business logic. Hope this article helps you help you use Apache Commons Digerster for data verification and processing!