For the first step, we need to parse our original String. The Gson is an open-source library to deal with JSON in Java programs. I am assuming you omit quote marks in the string because you had put it inside an HTML tag’s attribute and didn’t want to escape quotes. Using JsonParser The first approach we'll examine for converting a JSON String to a JsonObject is a two-step process that uses the JsonParser class. Basically you’d have to rewrite JSON.js and JSON2.js to support malformed JSON.Īlso consider the following option, which is still bad I admit, but marginally better then sticking JSON inside an HTML tag’s attribute. It is perfect where the memory constraint environment is important. The advantage of the JSON-Simple library is its small size. String str g.toJson (p) Using JSON-Simple Library It is another open-source Java library used for converting JSON String to JSON Object. You can convert JSON String to Java object in just 2 lines by using Gson as shown below : Gson g new Gson () Player p g.fromJson (jsonString, Player. It comes from none other than Google, which is also behind Guava, a common purpose library for Java programmers. The maven dependency that is required for this library is given below. It can also be used to convert Java string to its equivalent JSON Object.
Convert string to json object code#
The above code will become a lot more complex when you start nesting objects and arrays. We can also convert JSON Object to JSON String by using the toJson () method. The Gson is an open-source library to deal with JSON in Java programs. Use Google Gson to Convert a String to JSON Object in Java Google Gson is a java library to serialize/deserialize Java Objects to JSON or vice-versa.
Here is an example: var myJSONString = '") You just need to include that file, remove its first line, and use the native JSON parser, and if it’s not present json2 would do the work.
Native JSON parser is already available in:Īnd Crockford has made a safe fallback in javascript, called json2.js, which is an adaption of the eval() approach, with some security bits added and with the native JSON parsers API. I think that the best way of doing this, as Douglas Crockford (one of the biggests gurus of JavaScript) suggests in here is using the JSON native parser, as it is not only faster than the eval(), it’s also more secure.
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