How to convert a BasicDBList or BasicDBOject

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KNC
KNC 2017-4-1
回答： Jayaram Theegala 2017-4-5
Hi,
i have a cell array from a MongoDB Json that I would like to convert to a matrix or vektor. The problem is that some of those cells are a "BasicDBList" or "BasicDBObject" containing multiple cells from the original Json. Is there a possibility to convert "BasicDBList"/"BasicDBObject" to double or a string array?
Thanks in advance

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回答（1 个）

Jayaram Theegala
Jayaram Theegala 2017-4-5
You can import the necessary MongoDB jars to MATLAB and then call the "toString" method of "BasicDBObject"/"BasicDBList", by doing this you can get the result in Java String type. Then you can convert the Java String to MATLAB char array as shown below:
str = java.lang.String('hello');
res = str.toCharArray'
If you want to convert the Java String to MATLAB string type, you can do it as shown below:
str = java.lang.String('hello');
res = string(str);
Please note that above shown conversion does not work on MATLAB R2016b and earlier versions. I hope this helps!

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