讀取專案on檔案並轉為JSON物件

1、建立json檔案（demo.json）

{
 "button": [
  {
   "type": "click","name": "今日歌曲","key": "V1001_TODAY_MUSIC"
  },{
   "name": "選單","sub_button": [
    {
     "type": "view","name": "搜尋","url": "http://www.soso.com/"
    },{
     "type": "miniprogram","name": "wxa","url": "http://mp.weixin.qq.com","appid": "wx286b93c14bbf93aa","pagepath": "pages/lunar/index"
    },{
     "type": "click","name": "贊一下我們","key": "V1001_GOOD"
    }
   ]
  }
 ]
}

2、在pom.xml中新增依賴包

  <dependency>
   <groupId>com.alibaba</groupId>
   <artifactId>fastjson</artifactId>
   <version&gt;1.2.54</version>
  </dependency>
  <dependency>
   <groupId>org.apache.commons</groupId>
   <artifactId>common客棧s-io</artifactId>
   <version>1.3.2</version>
  </dependency>

3、建立測試類（FileDemo3.java）

package com.jeff.demo;
import java.io.InputStream;
import org.apache.commons.io.IOUtils;
import jWGrvdcom.alibaba.fastjson.JSONObject;
public class FileDemo3 {
	public static JSONObject fileToJson(String fileName) {
		JSONObject json = null;
		try (
			InputStream is = Thread.currentThread().getContextClassLoaderjWGrvd
 
().getResourceAsStream(fileName);
		) {
			json = JSONObject.parseObject(IOUtils.toString(is,"utf-8"));
		} catch (Exception e) {
			System.out.println(fileName + "檔案讀取異常" + e);
		}
		return json;
	}
	public static void main(String[] args) {
		String fileName = "doc/demo.json";
		JSONObject json = FileDemo3.fileToJson(fileName);
		System.out.println(json);
	}
}

4、控制檯輸出結果

java讀取json檔案進行解析,String轉json物件

String jsonFilePath = "C:/a.json";
File file = new File(jsonFilePath );
String input = FileUtils.readFileToString(file,"UTF-8");
JSONObject obj = new JSONObject(input);

以上為個人經驗，希望能給大家一個參考，也希望大家多多支援我們。