JSON : what is the java Map equivalent in c#

Question

I am facing the problem that using JSON to pass an object to C# and C# pass a string back to Java and then java deserialize it to a Map BTW, the .net version is 3.5

Here is the problem

the java map JSON string is in this format:

{"key1":"value1","key2":"value2"}

but in C#, the dictionary is seralized to

[{"Key":"key1","Value":"value1"},{"Key":"key2","Value":"value2"}]

I just want find a way to do this:

for java Map JSON format, C# could deseralize it
for C#, find a way to seralize it to a java understandable format

Thanks

Which serializer are you using? JavaScriptSerializer or DataContractJsonSerializer? (or a third-party serializer) — Thomas Levesque
– Thomas Levesque, Commented Feb 3, 2012 at 22:16

Thomas Levesque · Accepted Answer · 2012-02-03 22:23:38Z

5

Try to use JavaScriptSerializer instead of DataContractJsonSerializer:

var dict = new Dictionary<string, string>
{
    { "key1", "value1" },
    { "key2", "value2" }
};
var jss = new JavaScriptSerializer();
string json = jss.Serialize(dict); // {"key1":"value1","key2":"value2"}

answered Feb 3, 2012 at 22:23

Thomas Levesque

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Comments

Jakobus · Accepted Answer · 2012-02-03 22:28:27Z

-1

I wrote an extension method for Dictionary to serialize it to JSON:

public static string SerializeToJson(this IDictionary<string, object> dict)
{
  var sb = new StringBuilder();

  sb.Append("{");

  foreach (string key in dict.Keys)
  {
    sb.AppendFormat("\"{0}\": \"{1}\"", key, dict[key]);
    sb.Append(key != dict.Keys.Last() ? ", " : String.Empty);
  }

  sb.Append("}");

  return sb.ToString();
}

So you can write:

var jsonString = myDict.SerializeToJson();

answered Feb 3, 2012 at 22:28

Jakobus

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1 Comment

L.B Over a year ago

What if dict[key] contains "? Or worse something like haha","key666":"value666

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