小案例Josn字串的生成

Gson Java · 發表 2018-10-22 21:39:18

摘要：寫了一個安卓的線上播放各個電視臺的小demo，放在手機和電視上都能看，但資源寫在string.xml裡感覺挺low 還是轉成json吧，維護起來方便些，或放在服務端也挺好，一個一個修改感覺好枯燥，就用程式碼吧其實這個算很簡單的，只是藉此複習一下流的操作和字串分割以及 jso...

寫了一個安卓的線上播放各個電視臺的小demo，放在手機和電視上都能看，但資源寫在string.xml裡感覺挺low

還是轉成json吧，維護起來方便些，或放在服務端也挺好，一個一個修改感覺好枯燥，就用程式碼吧

其實這個算很簡單的，只是藉此複習一下 流的操作 和 字串分割 以及 json的生成 和 json的解析

額外說一點：這裡的播放源目前都是可用的哦，使用直播流的軟體就能看相應的電視臺了

本文任務是把下列data.txt解析成json格式：如

{
"name": "CCTV1 綜合HD",
"url": "http://112.50.243.7/PLTV/88888888/224/3221226489/index.m3u8",
"mdTime": "2018-10-22"
},

張風捷特烈.png

data.txt

<item>CCTV1 綜合HD★http://112.50.243.7/PLTV/88888888/224/3221226489/index.m3u8</item>
<item>CCTV2 財經HD★http://112.50.243.7/PLTV/88888888/224/3221226554/index.m3u8</item>
<item>CCTV-3 綜藝HD★http://183.207.249.5/PLTV/3/224/3221225588/index.m3u8</item>
<item>CCTV4 中文國際★http://112.50.243.7/PLTV/88888888/224/3221226511/index.m3u8</item>
<item>CCTV-5 體育HD★http://183.207.249.15/PLTV/3/224/3221225604/index.m3u8</item>
<item>CCTV-6 電影HD★http://183.207.249.15/PLTV/3/224/3221225548/index.m3u8</item>
<item>CCTV-7 軍事與農業HD★http://183.207.249.15/PLTV/3/224/3221225546/index.m3u8</item>
<item>CCTV8 電視劇HD★http://223.110.245.167/ott.js.chinamobile.com/PLTV/3/224/3221227204/index.m3u8</item>
<item>CCTV9 記錄HD★http://112.50.243.7/PLTV/88888888/224/3221226566/index.m3u8</item>
<item>CCTV10 科教HD★http://112.50.243.7/PLTV/88888888/224/3221226488/index.m3u8</item>
<item>CCTV11 戲曲HD★http://112.50.243.7/PLTV/88888888/224/3221226493/index.m3u8</item>
<item>CCTV12 HD★http://112.50.243.7/PLTV/88888888/224/3221226623/index.m3u8</item>
<item>CCTV13 新聞HD★http://112.50.243.7/PLTV/88888888/224/3221226507/index.m3u8</item>
<item>CCTV14 少兒HD★http://112.50.243.7/PLTV/88888888/224/3221226497/index.m3u8</item>
<item>CCTV-15 音樂★http://183.207.249.7/PLTV/3/224/3221225568/index.m3u8</item>
<item>安徽衛視HD★http://183.207.249.15/PLTV/3/224/3221225634/index.m3u8</item>
<item>北京衛視HD★http://183.207.249.7/PLTV/3/224/3221225574/index.m3u8</item>
<item>湖南衛視 HD★http://223.110.243.173/PLTV/3/224/3221227220/index.m3u8</item>
<item>浙江衛視 HD★http://223.110.243.173/PLTV/3/224/3221227215/index.m3u8</item>
<item>青海衛視★http://183.207.249.7/PLTV/3/224/3221225580/index.m3u8</item>
<item>山東衛視★http://183.207.249.7/PLTV/3/224/3221225586/index.m3u8</item>
<item>江西衛視★http://183.207.249.15/PLTV/3/224/3221225537/index.m3u8</item>
<item>兵團衛視HD★http://v.btzx.com.cn:1935/live/weishi.stream/playlist.m3u8</item>
<item>東方衛視HD★http://111.48.34.182/huaweicdn.hb.chinamobile.com/PLTV/88888888/224/3221225810/1.m3u8?icpid=88888888 from=1 hms_devid=1143</item>
<item>河北衛視★http://183.207.249.7/PLTV/3/224/3221225602/index.m3u8</item>
<item>新疆衛視★http://183.207.249.15/PLTV/3/224/3221225523/index.m3u8</item>
<item>四川衛視★http://183.207.249.15/PLTV/3/224/3221225570/index.m3u8</item>
<item>西藏衛視★http://183.207.249.15/PLTV/3/224/3221225579/index.m3u8</item>
<item>愛情喜劇★http://183.207.249.15/PLTV/3/224/3221225525/index.m3u8</item>
<item>武林外傳★http://dlhls.cdn.zhanqi.tv/zqlive/33765_6qakZ.m3u8</item>
<item>CNTV古裝劇場★http://183.207.249.7/PLTV/3/224/3221225527/index.m3u8</item>
<item>動畫王國HD★http://183.207.249.15/PLTV/3/224/3221225555/index.m3u8</item>
<item>海外劇場★http://183.207.249.15/PLTV/3/224/3221225547/index.m3u8</item>
<item>完美遊戲★http://183.207.249.15/PLTV/3/224/3221225539/index.m3u8</item>
<item>電影輪播★http://112.50.243.7/PLTV/88888888/224/3221226670/index.m3u8</item>
<item>金鷹紀實HD★http://112.50.243.7/PLTV/88888888/224/3221226613/index.m3u8</item>

一、生成json字串

0思路步驟：

1).新建一個maven管理的java專案,引入gson依賴

2).用檔案讀流+bufferd包裝類一行一行讀取data.txt,對每行的字串切割

3).建一個實體類，每讀一行將資料載入如實體類

4).將實體類集合輸出成Json格式字串，並通過檔案寫流+bufferd寫出

1.新建一個maven管理的java專案,引入gson依賴

<!-- 為簡化set,get,toString程式碼引入lombok -->
<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.2</version>
<scope>provided</scope>
</dependency>

<!--gson依賴-->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.5</version>
</dependency>

2.檔案操作(小demo,異常直接拋了)

public class OnlineVideo {
public static void main(String[] args) throws IOException {
//讀取檔案
String path = "I:\\Java\\SpringBoot\\small_project\\src\\main\\resources\\data.txt";
BufferedReader br = new BufferedReader(new FileReader(path));
ArrayList<VideoBean> videoBeans = new ArrayList<VideoBean>();

String line = "";
while ((line = br.readLine()) != null) {
String res = line.split(">")[1].split("<")[0];
VideoBean videoBean = new VideoBean();
videoBean.setName(res.split("★")[0]);
videoBean.setUrl(res.split("★")[1]);
videoBean.setMdTime(new SimpleDateFormat("YYYY-MM-dd").format(System.currentTimeMillis()));
videoBeans.add(videoBean);
}
br.close();
String json = new GsonBuilder().create().toJson(videoBeans);

String target = "I:\\Java\\SpringBoot\\small_project\\src\\main\\resources\\data.json";
FileWriter fileWriter = new FileWriter(target);
fileWriter.write(json);
fileWriter.close();
}
}

3.data.json

[
{
"name": "CCTV1 綜合HD",
"url": "http://112.50.243.7/PLTV/88888888/224/3221226489/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV2 財經HD",
"url": "http://112.50.243.7/PLTV/88888888/224/3221226554/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV-3 綜藝HD",
"url": "http://183.207.249.5/PLTV/3/224/3221225588/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV4 中文國際",
"url": "http://112.50.243.7/PLTV/88888888/224/3221226511/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV-5 體育HD",
"url": "http://183.207.249.15/PLTV/3/224/3221225604/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV-6 電影HD",
"url": "http://183.207.249.15/PLTV/3/224/3221225548/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV-7 軍事與農業HD",
"url": "http://183.207.249.15/PLTV/3/224/3221225546/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV8 電視劇HD",
"url": "http://223.110.245.167/ott.js.chinamobile.com/PLTV/3/224/3221227204/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV9 記錄HD",
"url": "http://112.50.243.7/PLTV/88888888/224/3221226566/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV10 科教HD",
"url": "http://112.50.243.7/PLTV/88888888/224/3221226488/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV11 戲曲HD",
"url": "http://112.50.243.7/PLTV/88888888/224/3221226493/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV12 HD",
"url": "http://112.50.243.7/PLTV/88888888/224/3221226623/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV13 新聞HD",
"url": "http://112.50.243.7/PLTV/88888888/224/3221226507/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV14 少兒HD",
"url": "http://112.50.243.7/PLTV/88888888/224/3221226497/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CCTV-15 音樂",
"url": "http://183.207.249.7/PLTV/3/224/3221225568/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "安徽衛視HD",
"url": "http://183.207.249.15/PLTV/3/224/3221225634/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "北京衛視HD",
"url": "http://183.207.249.7/PLTV/3/224/3221225574/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "湖南衛視 HD",
"url": "http://223.110.243.173/PLTV/3/224/3221227220/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "浙江衛視 HD",
"url": "http://223.110.243.173/PLTV/3/224/3221227215/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "青海衛視",
"url": "http://183.207.249.7/PLTV/3/224/3221225580/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "山東衛視",
"url": "http://183.207.249.7/PLTV/3/224/3221225586/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "江西衛視",
"url": "http://183.207.249.15/PLTV/3/224/3221225537/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "兵團衛視HD",
"url": "http://v.btzx.com.cn:1935/live/weishi.stream/playlist.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "東方衛視HD",
"url": "http://111.48.34.182/huaweicdn.hb.chinamobile.com/PLTV/88888888/224/3221225810/1.m3u8?icpid\u003d88888888\u0026#038;from\u003d1\u0026#038;hms_devid\u003d1143",
"mdTime": "2018-10-22"
},
{
"name": "河北衛視",
"url": "http://183.207.249.7/PLTV/3/224/3221225602/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "新疆衛視",
"url": "http://183.207.249.15/PLTV/3/224/3221225523/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "四川衛視",
"url": "http://183.207.249.15/PLTV/3/224/3221225570/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "西藏衛視",
"url": "http://183.207.249.15/PLTV/3/224/3221225579/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "愛情喜劇",
"url": "http://183.207.249.15/PLTV/3/224/3221225525/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "武林外傳",
"url": "http://dlhls.cdn.zhanqi.tv/zqlive/33765_6qakZ.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "CNTV古裝劇場",
"url": "http://183.207.249.7/PLTV/3/224/3221225527/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "動畫王國HD",
"url": "http://183.207.249.15/PLTV/3/224/3221225555/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "海外劇場",
"url": "http://183.207.249.15/PLTV/3/224/3221225547/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "完美遊戲",
"url": "http://183.207.249.15/PLTV/3/224/3221225539/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "電影輪播",
"url": "http://112.50.243.7/PLTV/88888888/224/3221226670/index.m3u8",
"mdTime": "2018-10-22"
},
{
"name": "金鷹紀實HD",
"url": "http://112.50.243.7/PLTV/88888888/224/3221226613/index.m3u8",
"mdTime": "2018-10-22"
}
]

二、安卓中的使用

可以放在伺服器上，用網路訪問，這裡就放在assets目錄下測試

新增依賴 implementation 'com.google.code.gson:gson:2.2.4'

1.json解析的實體類

/**
 * 作者：張風捷特烈<br/>
 * 時間：2018/10/22 0022:21:03<br/>
 * 郵箱：[email protected]<br/>
 * 說明：json解析的實體類
 */
public class VideoBean {

 /**
* name : CCTV1 綜合HD
* url : http://112.50.243.7/PLTV/88888888/224/3221226489/index.m3u8
* mdTime : 2018-10-22
*/

private String name;
private String url;
private String mdTime;

public static VideoBean objectFromData(String str) {

return new Gson().fromJson(str, VideoBean.class);
}

public static List<VideoBean> arrayVideoBeanFromData(String str) {

Type listType = new TypeToken<ArrayList<VideoBean>>() {
}.getType();

return new Gson().fromJson(str, listType);
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getUrl() {
return url;
}

public void setUrl(String url) {
this.url = url;
}

public String getMdTime() {
return mdTime;
}

public void setMdTime(String mdTime) {
this.mdTime = mdTime;
}

2.讀取data.json,解析成實體類集合

String json = FileHelper.get().readInAssets(this, "data.json");
 List<VideoBean> videoBeans = VideoBean.arrayVideoBeanFromData(json);

3.用listView展示資料：

mIdLvVideo.setAdapter(new MyLVAdapter<VideoBean>(this, videoBeans, R.layout.item_text_only) {
@Override
public void setData(MyLVHolder holder, VideoBean data, int position) {
holder.setText(R.id.id_tv_name, data.getName());
}
});

listView.png

後記：捷文規範

1.本文成長記錄及勘誤表

專案原始碼	日期	備註
V0.1--無	2018-10-22	ofollow,noindex">小案例Josn字串的生成

2.更多關於我

筆名	QQ	微信	愛好
張風捷特烈	1981462002	zdl1994328	語言
我的github	我的簡書	我的C SDN	個人網站

3.宣告

1----本文由張風捷特烈原創,轉載請註明

2----歡迎廣大程式設計愛好者共同交流

3----個人能力有限，如有不正之處歡迎大家批評指證，必定虛心改正

4----看到這裡，我在此感謝你的喜歡與支援