{"id":4987,"date":"2017-05-29T12:43:56","date_gmt":"2017-05-29T12:43:56","guid":{"rendered":"http:\/\/putridparrot.com\/blog\/?p=4987"},"modified":"2017-05-29T12:43:56","modified_gmt":"2017-05-29T12:43:56","slug":"creating-java-classes-from-an-xml-schema","status":"publish","type":"post","link":"https:\/\/putridparrot.com\/blog\/creating-java-classes-from-an-xml-schema\/","title":{"rendered":"Creating Java classes from an XML schema"},"content":{"rendered":"

This is actually part of a set of three posts taking an XSD (XML Schema), generating the Java classes for it, then we’ll create a server using CXF that will support both JSON and XML responses, finally we’ll create a client that can switch between the two. <\/p>\n

Step 1<\/strong><\/p>\n

Step 1 is the easy bit – so we have an xsd (we’ll use a Sample XSD<\/a> recreated below)<\/p>\n

\r\n<xsd:schema xmlns:xsd="http:\/\/www.w3.org\/2001\/XMLSchema"   \r\n           xmlns:tns="http:\/\/tempuri.org\/PurchaseOrderSchema.xsd"   \r\n           targetNamespace="http:\/\/tempuri.org\/PurchaseOrderSchema.xsd"   \r\n           elementFormDefault="qualified">  \r\n <xsd:element name="PurchaseOrder" type="tns:PurchaseOrderType"\/>  \r\n <xsd:complexType name="PurchaseOrderType">  \r\n  <xsd:sequence>  \r\n   <xsd:element name="ShipTo" type="tns:USAddress" maxOccurs="2"\/>  \r\n   <xsd:element name="BillTo" type="tns:USAddress"\/>  \r\n  <\/xsd:sequence>  \r\n  <xsd:attribute name="OrderDate" type="xsd:date"\/>  \r\n <\/xsd:complexType>  \r\n  \r\n <xsd:complexType name="USAddress">  \r\n  <xsd:sequence>  \r\n   <xsd:element name="name"   type="xsd:string"\/>  \r\n   <xsd:element name="street" type="xsd:string"\/>  \r\n   <xsd:element name="city"   type="xsd:string"\/>  \r\n   <xsd:element name="state"  type="xsd:string"\/>  \r\n   <xsd:element name="zip"    type="xsd:integer"\/>  \r\n  <\/xsd:sequence>  \r\n  <xsd:attribute name="country" type="xsd:NMTOKEN" fixed="US"\/>  \r\n <\/xsd:complexType>  \r\n<\/xsd:schema>  \r\n<\/pre>\n
I’ve saved this as sample.xsd. <\/p>\n
Now from a command prompt run<\/p>\n
\r\nxjc -p com.putridparrot.sample sample.xsd\r\n<\/pre>\n
XJC will generate Java source code in the package (-p) com.putridparrot.sample, so you should see four files. Two are our complexTypes, one is package-info.java which allows us to apply package level annotations and the final one is ObjectFactory.java which is a utility class\/factory for creating types and (as it says in the comments within the file) <\/p>\n
“allows you to programatically construct new instances of the Java representation for XML content”<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"
This is actually part of a set of three posts taking an XSD (XML Schema), generating the Java classes for it, then we’ll create a server using CXF that will support both JSON and XML responses, finally we’ll create a client that can switch between the two. Step 1 Step 1 is the easy bit […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[161],"tags":[],"class_list":["post-4987","post","type-post","status-publish","format-standard","hentry","category-java"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/posts\/4987","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/comments?post=4987"}],"version-history":[{"count":4,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/posts\/4987\/revisions"}],"predecessor-version":[{"id":5017,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/posts\/4987\/revisions\/5017"}],"wp:attachment":[{"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/media?parent=4987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/categories?post=4987"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/putridparrot.com\/blog\/wp-json\/wp\/v2\/tags?post=4987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}