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PORecursively parsing a json file using Jackson Json parser
 

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    <p>I'm trying to recursively parse a sample Json file that has many sets of complex elements. And the code that i'm trying is this : </p> <pre><code>public class Jsonex { public static void main(String argv[]) { try { Jsonex jsonExample = new Jsonex(); jsonExample.testJackson(); } catch (Exception e){ System.out.println("Exception " + e); } } public static void testJackson() throws IOException { JsonFactory factory = new JsonFactory(); // System.out.println("hello"); ObjectMapper mapper = new ObjectMapper(factory); File from = new File("D://albumList.txt"); TypeReference&lt;HashMap&lt;String,Object&gt;&gt; typeRef = new TypeReference&lt;HashMap&lt;String,Object&gt;&gt;() {}; HashMap&lt;String,Object&gt; o= mapper.readValue(from, typeRef); // System.out.println("" + o); Iterator it = o.entrySet().iterator(); while (it.hasNext()) { Map.Entry pairs = (Map.Entry)it.next(); System.out.println(pairs.getKey() + " = " + pairs.getValue()); HashMap&lt;String,Object&gt; o1=mapper.readValue(pairs.getValue().toString(),typeRef); System.out.println("hey"+o1); Iterator it1 = o1.entrySet().iterator(); while (it1.hasNext()) { Map.Entry pairs1 = (Map.Entry)it.next(); System.out.println(pairs1.getKey() + " = " + pairs1.getValue()); it1.remove(); // avoids a ConcurrentModificat } } }} </code></pre> <p>and i get this exception : </p> <p>Exception org.codehaus.jackson.JsonParseException: Unexpected character ('i' (code 105)): was expecting double-quote to start field name at [Source: java.io.StringReader@2de7753a; line: 1, column: 3]</p> <p><strong>Actually what im trying to do is, parse the file and get list of name object pairs, and take the object which inturn has name-object pairs. - but the problem is that the parser is expecting "" before strings !</strong></p>
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    1. COCould you show some JSON? Why is it not valid? At least for field names you can configure [JsonParser.Feature ALLOW_UNQUOTED_FIELD_NAMES](http://fasterxml.github.com/jackson-core/javadoc/2.1.0/com/fasterxml/jackson/core/JsonParser.Feature.html#ALLOW_UNQUOTED_FIELD_NAMES) on the ObjectMapper.
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    2. CO{"menu": { "id": "file", "value": "File", "popup": { "menuitem": [ {"value": "New", "onclick": "CreateNewDoc()"}, {"value": "Open", "onclick": "OpenDoc()"}, {"value": "Close", "onclick": "CloseDoc()"} ] } }} Thanks so much, that worked but there is a new exception.It says Exception org.codehaus.jackson.JsonParseException: Unexpected character ('=' (code 61)): was expecting a colon to separate field name and value at [Source: java.io.StringReader@2de7753a; line: 1, column: 5] now. please help me @nutlike
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    3. COWhen I asked for JSON I meant **your** JSON and not from http://json.org/example.html ... please update your question accordingly. Beyond that (once again): Why is your JSON not valid? Where do you get it from?
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