How to use the "JSON In Java" framework in the Java class library

How to use the "JSON In Java" framework in the Java class library Overview: The "JSON in Java" framework is a popular Java class library for processing and parsing of JSON data.JSON is a lightweight data exchange format that is widely used in data transmission and storage between Web applications.This article will introduce how to generate and analyze JSON data with the "JSON in Java" framework. Generate JSON data: It is very simple to generate JSON data with the "JSON in Java" framework.The following is an example code to demonstrate how to use this framework to generate a JSON object that contains names and age: import org.json.JSONObject; public class JsonGenerator { public static void main(String[] args) { // Create a JSONObject object JSONObject jsonObject = new JSONObject(); // Add key value and go to JSONObject jsonObject.put ("name", "Zhang San"); jsonObject.put("age", 28); // Print jsonObject as JSON string System.out.println(jsonObject.toString()); } } In the above example, we first introduced the "ORG.JSON.JSONObject" class, which provides the function of generating and operating JSON objects.Then, we created a JSONObject object called "JSONObject", and used the "PUT" method to add the key value pair of name and age.Finally, we converted JSONObject to JSON string and printed. Analyze JSON data: Similar to generating JSON data, it is also simple to use the "JSON in Java" framework to analyze JSON data.The following is an example code to demonstrate how to use this framework to analyze a JSON string containing names and age: import org.json.JSONObject; public class JsonParser { public static void main(String[] args) { // json string String jsonstring = "{\" name \ ": \" Zhang San \ ", \" Age \ ": 28}"; // Create a JSONObject object JSONObject jsonObject = new JSONObject(jsonString); // Get the key value pair from JSONObject String name = jsonObject.getString("name"); int age = jsonObject.getInt("age"); // Print name and age System.out.println ("Name:" + Name); System.out.println ("age:" + Age); } } In the above example, we first assigned the name and age JSON string to a variable named "JSONSTRING".Then, we created a JSONObject object and passed the JSON string to the constructor for parsing.Next, we use the "GetString" and "Getint" methods to get the names and age from the JSONObject and print it out. Summarize: The "JSON in Java" framework can easily generate and analyze JSON data.By importing the "Org.json.jsonObject" class, we can create the JSONObject object and use the "PUT" method to add key values to generate JSON data.The analysis of the JSON data is to pass the JSON string into the jsonObject constructor, and then use the corresponding method to obtain the value pair value.The above is the basic method of using the "JSON in Java" framework.