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POHow to translate JSON to XML in Java
 

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  1. POHow to translate JSON to XML in Java
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    <p>I wrote some Java code that is supposed to translate a JSON input file into an equivalent XML file. I used some answers from other questions on stackoverflow. However, I get an error:</p> <pre><code>[Fatal Error] :1:123: The markup in the document following the root element must be well-formed. Exception in thread "main" org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 123; The markup in the document following the root element must be well-formed. at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:251) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:300) at TranslateJSONtoXML.stringToDom(TranslateJSONtoXML.java:34) at TranslateJSONtoXML.main(TranslateJSONtoXML.java:43) </code></pre> <p>Why this error? I assume the JSON input is well-formed. So, here's the code:</p> <pre><code>import java.io.File; import java.io.IOException; import java.util.Scanner; import org.json.JSONObject; import org.json.XML; import java.io.*; import javax.xml.parsers.*; import org.w3c.dom.*; import org.xml.sax.*; public class TranslateJSONtoXML { public static String readFile(String pathname) throws IOException { File file = new File(pathname); StringBuilder fileContents = new StringBuilder((int)file.length()); Scanner scanner = new Scanner((Readable) new BufferedReader(new FileReader(file))); String lineSeparator = System.getProperty("line.separator"); try { while(scanner.hasNextLine()) { fileContents.append(scanner.nextLine()).append(lineSeparator); } return fileContents.toString(); } finally { scanner.close(); } } public static Document stringToDom(String xmlSource) throws SAXException, ParserConfigurationException, IOException { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); return builder.parse(new InputSource(new StringReader(xmlSource))); } public static void main(String[] args) throws SAXException, ParserConfigurationException, IOException { String jsonString = readFile("/Users/monicamarcus/Downloads/Attachments_20131023/edl.json"); JSONObject o = new JSONObject(jsonString); String xml = org.json.XML.toString(o); System.out.println(xml); Document doc = stringToDom(xml); System.out.println(doc.getDocumentURI()); } } </code></pre> <p>The error comes from line return builder.parse(new InputSource(new StringReader(xmlSource)));</p> <p>Here's the XML I get. It is clearly not well formed, but I don't know why I get this:</p> <pre><code>&lt;javascript&gt;function textCounterEval(e,t){var n=t;var r=n.length;if(r&amp;gt;=e){return true}else{return false}}&lt;/javascript&gt; &lt;title&gt;Request Conversion&lt;/title&gt; &lt;configParams&gt;param1&lt;/configParams&gt; &lt;configParams&gt;param2&lt;/configParams&gt; &lt;instructions&gt;** Fields with an asterisk are required.&lt;/instructions&gt; &lt;name&gt;RequestJSON.eDoc.Form&lt;/name&gt; &lt;createInstructions&gt;** Fields with an asterisk are required.&lt;/createInstructions&gt; &lt;eventNotificationURL&gt;http://localhost:8080/xx-xxx/xxx.jsp&lt;/eventNotificationURL&gt; &lt;fieldDefs&gt; &lt;attributeName&gt;RequestChange.eDoc.isUrgent.RuleAttribute&lt;/attributeName&gt; &lt;title&gt;URGENT&lt;/title&gt; &lt;validation&gt;&lt;message&gt;Please Select a Campus.&lt;/message&gt; &lt;customValidator&gt;function addEvent(e,t,n,r){if(e.addEventListener){e.addEventListener(t,n,r);return true}else if(e.attachEvent){var i=e.attachEvent(&amp;apos;on&amp;apos;+t,n);return i}else{e[&amp;apos;on&amp;apos;+t]=n}}&lt;/customValidator&gt; &lt;regex&gt;[^Select]&lt;/regex&gt; &lt;required&gt;true&lt;/required&gt; &lt;/validation&gt;&lt;name&gt;isUrgent&lt;/name&gt; &lt;value&gt;no&lt;/value&gt; &lt;display&gt; &lt;values&gt; &lt;title&gt;--- Select ---&lt;/title&gt; &lt;/values&gt; &lt;values&gt; &lt;title&gt;Group1&lt;/title&gt; &lt;value&gt;sampleGroup1&lt;/value&gt; &lt;/values&gt; &lt;values&gt; &lt;title&gt;Group2&lt;/title&gt; &lt;value&gt;sampleGroup2&lt;/value&gt; &lt;/values&gt; &lt;valuesGroup&gt; &lt;values&gt; &lt;title&gt;NO&lt;/title&gt; &lt;value&gt;NO&lt;/value&gt; &lt;/values&gt; &lt;values&gt; &lt;title&gt;YES&lt;/title&gt; &lt;value&gt;YES&lt;/value&gt; &lt;/values&gt; &lt;dependsOn&gt; &lt;field&gt; &lt;name&gt;abc&lt;/name&gt; &lt;value&gt;XYZ&lt;/value&gt; &lt;/field&gt; &lt;/dependsOn&gt; &lt;/valuesGroup&gt; &lt;type&gt;select&lt;/type&gt; &lt;meta&gt; &lt;name&gt;cols&lt;/name&gt; &lt;value&gt;60&lt;/value&gt; &lt;/meta&gt; &lt;/display&gt; &lt;lookup&gt; &lt;fieldConversions&gt;conversions&lt;/fieldConversions&gt; &lt;businessObjectClassName&gt;org.xxx.xxxx&lt;/businessObjectClassName&gt; &lt;/lookup&gt; &lt;/fieldDefs&gt; &lt;fieldDefs&gt; &lt;title&gt;Date and Time for Change: MM/DD/YYYY&lt;/title&gt; &lt;validation&gt; &lt;message&gt;Enter a valid date in the format mm/dd/yyyy.&lt;/message&gt; &lt;regex&gt;^[0-1]?[0-9](/|-)[0-3]?[0-9](/|-)[1-2][0-9][0-9][0-9]$&lt;/regex&gt; &lt;required&gt;true&lt;/required&gt; &lt;/validation&gt; &lt;name&gt;dateOfChange&lt;/name&gt; &lt;display&gt; &lt;type&gt;text&lt;/type&gt; &lt;/display&gt; &lt;/fieldDefs&gt; &lt;fieldDefs&gt; &lt;title&gt;Description of the Change&lt;/title&gt; &lt;validation&gt; &lt;message&gt;Enter a description of the change.&lt;/message&gt; &lt;required&gt;true&lt;/required&gt; &lt;/validation&gt; &lt;name&gt;descriptionOfChange&lt;/name&gt; &lt;display&gt; &lt;type&gt;textarea&lt;/type&gt; &lt;meta&gt; &lt;name&gt;rows&lt;/name&gt; &lt;value&gt;5&lt;/value&gt; &lt;/meta&gt; &lt;meta&gt; &lt;name&gt;cols&lt;/name&gt; &lt;value&gt;60&lt;/value&gt; &lt;/meta&gt; &lt;/display&gt; &lt;/fieldDefs&gt;&lt; validations&gt; &lt;message&gt;If Request is OTHER, please enter Other Request.&lt;/message&gt; &lt;expression&gt;(wf:field(&amp;apos;reason&amp;apos;) = &amp;apos;Other&amp;apos; and not(wf:empty(wf:field(&amp;apos;otherDescription&amp;apos;)))) or (wf:field(&amp;apos;reason&amp;apos;) != &amp;apos;Other&amp;apos; and wf:empty(wf:field(&amp;apos;otherDescription&amp;apos;))) &lt;/expression&gt; &lt;/validations&gt; &lt;attributes&gt; &lt;name&gt;NetworkIdRole1Attribute&lt;/name&gt; &lt;fields&gt; &lt;attributeField&gt;user1Id&lt;/attributeField&gt; &lt;edlField&gt;RoleAdHoc&lt;/edlField&gt; &lt;/fields&gt; &lt;/attributes&gt; &lt;attributes&gt; &lt;name&gt;NetworkIdRole2Attribute&lt;/name&gt; &lt;fields&gt; &lt;attributeField&gt;user2Id&lt;/attributeField&gt; &lt;edlField&gt;RoleAdHoc&lt;/edlField&gt; &lt;/fields&gt; &lt;/attributes&gt; &lt;security&gt;Defines security for the edl document &lt;/security&gt; </code></pre> <p>I post also the JSON file. It looks well-formed, though.</p> <pre><code>{ "name": "RequestJSON.eDoc.Form", "title": "Request Conversion", "configParams": [ "param1", "param2" ], "security": "Defines security for the edl document", "eventNotificationURL": "http://localhost:8080/xx-xxx/xxx.jsp", "createInstructions": "** Fields with an asterisk are required.", "instructions": "** Fields with an asterisk are required.", "validations": [ { "expression": "(wf:field('reason') = 'Other' and not(wf:empty(wf:field('otherDescription')))) or (wf:field('reason') != 'Other' and wf:empty(wf:field('otherDescription')))", "message": "If Request is OTHER, please enter Other Request." } ], "attributes": [ { "name": "NetworkIdRole1Attribute", "fields": [ { "attributeField": "user1Id", "edlField": "RoleAdHoc" } ] }, { "name": "NetworkIdRole2Attribute", "fields": [ { "attributeField": "user2Id", "edlField": "RoleAdHoc" } ] } ], "javascript": "function textCounterEval(e,t){var n=t;var r=n.length;if(r&gt;=e){return true}else{return false}}", "fieldDefs": [ { "attributeName": "RequestChange.eDoc.isUrgent.RuleAttribute", "name": "isUrgent", "title": "URGENT", "value": "no", "display": { "type": "select", "meta": [ { "name": "cols", "value": "60" } ], "values": [ { "title": "--- Select ---" }, { "title": "Group1", "value": "sampleGroup1" }, { "title": "Group2", "value": "sampleGroup2" } ], "valuesGroup": { "dependsOn": { "field": { "name": "abc", "value": "XYZ" } }, "values": [ { "title": "NO", "value": "NO" }, { "title": "YES", "value": "YES" } ] } }, "lookup": { "businessObjectClassName": "org.xxx.xxxx", "fieldConversions": "conversions" }, "validation": { "required": "true", "regex": "[^Select]", "customValidator": "function addEvent(e,t,n,r){if(e.addEventListener){e.addEventListener(t,n,r);return true}else if(e.attachEvent){var i=e.attachEvent('on'+t,n);return i}else{e['on'+t]=n}}", "message": "Please Select a Campus." } }, { "name": "dateOfChange", "title": "Date and Time for Change: MM/DD/YYYY", "display": { "type": "text" }, "validation": { "required": "true", "regex": "^[0-1]?[0-9](/|-)[0-3]?[0-9](/|-)[1-2][0-9][0-9][0-9]$", "message": "Enter a valid date in the format mm/dd/yyyy." } }, { "name": "descriptionOfChange", "title": "Description of the Change", "display": { "type": "textarea", "meta": [ { "name": "rows", "value": "5" }, { "name": "cols", "value": "60" } ] }, "validation": { "required": "true", "message": "Enter a description of the change." } } ] } </code></pre>
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    1. COThanks for editing javaBeginner. Did you vote it down? Why?
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    2. COAdd generated xml into question, or try yo use some xml validator on generated xml.
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    3. COI added the XML.
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