How to avoid quotes around string values while creating JSONObject

Question

I am trying to create JSON query string for MongoDB, In order to support regular expression I need to create JSON string that has values without quotes. How do accomplish this in java,

Here is the example of what I am trying to do,

  JSONObject obj= new JSONObject();
  String title = "gro";
  obj.put("title", "/.*" + title + ".*/");

Result is

   {"title ":"/.*gro.*/"}

Above is no longer treated as a regular expression by MongoDB. What i wanted is,

   {"title ":/.*gro.*/}

So that MongoDB treats it as a regular expression. Is there any way to accomplish this in java?

{"title ":/.*gro.*/} is not valid JSON, so I doubt you'll find any JSON parser/marshaller that will generate that. — JB Nizet
– JB Nizet, Commented Mar 8, 2013 at 15:27
This would result in invalid JSON. What library are you using and what do you want to accomplish? [For what do you need the regular expression?] — nutlike
– nutlike, Commented Mar 8, 2013 at 15:27

JohnnyHK · Accepted Answer · 2013-03-08 15:30:29Z

1

The / delimited regular expression syntax is a JavaScript construct. In Java you have to use java.util.regex.Pattern like this:

BasicDBObject query = new BasicDBObject("title", Pattern.compile(".*gro.*"));

answered Mar 8, 2013 at 15:30

JohnnyHK

313k70 gold badges632 silver badges479 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Sudhakar · Accepted Answer · 2013-03-08 15:47:49Z

0

Try this,

  JSONObject obj= new JSONObject();
  String title = "gro";
  String startExpr = "/.*";
  String endExpr = ".*/";

  obj.put("title", startExpr  + title + endExpr );

answered Mar 8, 2013 at 15:47

Sudhakar

4,8832 gold badges37 silver badges42 bronze badges

Collectives™ on Stack Overflow

How to avoid quotes around string values while creating JSONObject

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related