1.pom.xml配置

    	
     
      com.googlecode.json-simple
     	
     
      json-simple
     	
     
      1.1
     
    

2.准备JSON数据文件jsonTestFile.json

{  "id": 1,  "firstname": "Katerina",  "languages": [    {      "lang": "en",      "knowledge": "proficient"    },    {      "lang": "fr",      "knowledge": "advanced"    }  ],  "job": {    "site": "www.javacodegeeks.com",    "name": "Java Code Geeks"  }}

3.Java 解析类

package com.javacodegeeks.javabasics.jsonparsertest;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.IOException;import java.util.Iterator;import org.json.simple.JSONArray;import org.json.simple.JSONObject;import org.json.simple.parser.JSONParser;import org.json.simple.parser.ParseException;public class JsonParseTest {	private static final String filePath = "C:\\Users\\katerina\\Desktop\\jsonTestFile.json";		public static void main(String[] args) {		try {			// read the json file			FileReader reader = new FileReader(filePath);			JSONParser jsonParser = new JSONParser();			JSONObject jsonObject = (JSONObject) jsonParser.parse(reader);			// get a String from the JSON object			String firstName = (String) jsonObject.get("firstname");			System.out.println("The first name is: " + firstName);			// get a number from the JSON object			long id =  (long) jsonObject.get("id");			System.out.println("The id is: " + id);			// get an array from the JSON object			JSONArray lang= (JSONArray) jsonObject.get("languages");						// take the elements of the json array			for(int i=0; i