Java JsonPath Tutorial: Parse JSON Data

1 year ago
Sophia Anderson
1 minute

In Java, you can use the third-party library json-path to parse JSON data. Here is a simple example:

import com.jayway.jsonpath.JsonPath;

public class JsonPathExample {
    public static void main(String[] args) {
        String json = "{\"name\": \"Alice\", \"age\": 30, \"pets\": [\"dog\", \"cat\"]}";

        String name = JsonPath.read(json, "$.name");
        int age = JsonPath.read(json, "$.age");
        String pet1 = JsonPath.read(json, "$.pets[0]");
        String pet2 = JsonPath.read(json, "$.pets[1]");

        System.out.println("Name: " + name);
        System.out.println("Age: " + age);
        System.out.println("Pet 1: " + pet1);
        System.out.println("Pet 2: " + pet2);
    }
}

In the example above, first import the json-path library, then parse the JSON data using the JsonPath.read method. You can use path expressions like $.name to get specific field values in the JSON, or use $.pets[0] to retrieve elements in an array. Finally, output the parsed result.

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