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EasyPoXmlGenerator.java - Generate XML from Java Objects
How to write Java program to generate XML document from Java data type objects using XMLBeans? I have the XML Schema compiled as Java data types.
✍: FYIcenter.com
If you have your XML schema compiled as Java data types, you can following these suggestions to write a Java program to generate an XML document from Java data objects:
1. Use the Factory sub class generated from the "scomp" tool or the SchemaCompiler class code to create a new empty XML document object:
PurchaseOrderDocument poDoc = PurchaseOrderDocument.Factory.newInstance(); PurchaseOrderDocument.PurchaseOrder po = PurchaseOrderDocument.PurchaseOrder.Factory.newInstance();
2. Use Factory sub classes of complex element types to create new empty XML element objects:
Customer c = Customer.Factory.newInstance(); Shipper s = Shipper.Factory.newInstance();
2. For repeating elements, use the insertNew*() methods of the parent object to create new empty XML element objects:
LineItem l = po.insertNewLineItem(0); LineItem m = po.insertNewLineItem(1);
3. Use set*() methods to assign new primitive values to simple elements and attributes:
c.setName("Frank Y. Ivy"); c.setAddress("Anywhere, EU"); c.setAge(18);
4. Some simple element types require special Java data type classes:
l.setPerUnitOunces(new BigDecimal(9.0)); l.setPrice(new BigDecimal(499.99)); l.setQuantity(new BigInteger("1"));
5. Use set*() methods assign sub elements to parent elements. Make sure to complete sub elements before assigning them to the parent.
po.setCustomer(c); po.setDate(d); po.setShipper(s); poDoc.setPurchaseOrder(po);
6. Use toString() method to generate the XML document from the root element object:
System.out.println("\r\neEasyPO xml: \r\n"+poDoc.toString());
Below is the entire sample Java program that generate an XML document into objects of data type classes generated by XMLBeans:
// Copyright (c) FYIcenter.com import java.util.Calendar ; import java.math.*; import org.apache.xmlbeans.*; import org.openuri.easypo.PurchaseOrderDocument; import org.openuri.easypo.Customer; import org.openuri.easypo.LineItem; import org.openuri.easypo.Shipper; public class EasyPoXmlGenerator { public static void main(String[] args) throws Exception { // Create an empty instance of an XMLBeans type. PurchaseOrderDocument poDoc = PurchaseOrderDocument.Factory.newInstance(); PurchaseOrderDocument.PurchaseOrder po = PurchaseOrderDocument.PurchaseOrder.Factory.newInstance(); Customer c = Customer.Factory.newInstance(); c.setName("Frank Y. Ivy"); c.setAddress("Anywhere, EU"); c.setAge(18); po.setCustomer(c); Calendar d = Calendar.getInstance(); d.set(1970,1,1); po.setDate(d); LineItem l = po.insertNewLineItem(0); l.setDescription("Google Phone"); l.setPerUnitOunces(new BigDecimal(9.0)); l.setPrice(new BigDecimal(499.99)); l.setQuantity(new BigInteger("1")); LineItem m = po.insertNewLineItem(1); m.setDescription("Phone Battery"); m.setPerUnitOunces(new BigDecimal(3.0)); m.setPrice(new BigDecimal(9.99)); m.setQuantity(new BigInteger("1")); Shipper s = Shipper.Factory.newInstance(); s.setName("FastShipper"); s.setPerOunceRate(new BigDecimal(0.99)); po.setShipper(s); poDoc.setPurchaseOrder(po); System.out.println("\r\nEasyPO xml: \r\n"+poDoc.toString()); } }
Compile and run it with Java SE 8 JDK:
\fyicenter\xmlbeans-2.6.0>\fyicenter\jdk-1.8.0\bin\javac -cp .\lib\xbean.jar;easypo.jar EasyPoXmlGenerator.java \fyicenter\xmlbeans-2.6.0>\fyicenter\jdk-1.8.0\bin\java -cp .;.\lib\xbean.jar;easypo.jar EasyPoXmlGenerator EasyPO xml: <purchase-order xmlns="http://openuri.org/easypo"> <customer age="18"> <name>Frank Y. Ivy</name> <address>Anywhere, EU</address> </customer> <date>1970-02-01T19:42:53.812-05:00</date> <line-item> <description>Google Phone</description> <per-unit-ounces>9</per-unit-ounces> <price>499.990000000000009094947017729282379150390625</price> <quantity>1</quantity> </line-item> <line-item> <description>Phone Battery</description> <per-unit-ounces>3</per-unit-ounces> <price>9.9900000000000002131628207280300557613372802734375</price> <quantity>1</quantity> </line-item> <shipper> <name>FastShipper</name> <per-ounce-rate>0.9899999999999999911182158029987476766109466552734375</per-ounce-rate> </shipper> </purchase-order>
⇒ FAQ for Apache XMLBeans JAR Library
⇐ EasyPoXmlParser.java - Parse XML to Java Objects
2017-07-07, 1916🔥, 0💬
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