0. 知識點

• List 集合入參
• 字串前後綴剔除
• 好用的JSON轉換工具

1. 請求URL

• http://localhost:8888/Pasadena/PasadenaAll?newArr=89467&newArr=64540&newArr=81668&newArr=49180

2. Controller

@GetMapping("/PasadenaAll")
public List<Pasadena> PasadenaAll(@RequestParam List<Integer> newArr) {
  // 建立返參
  List<Pasadena> list = new ArrayList<>();
  //組裝查詢條件
  List<Integer> macon = new ArrayList<>();
  newArr.forEach(ar -> Collections.addAll(macon, ar));
  //獲取解析歌曲路徑
  PasadenaUtil.list(macon).forEach(item -> list.add(item));
  return list;
}
 

3. 非同步呼叫工具類

import cn.hutool.http.HttpRequest;
import com.alibaba.fastjson.JSON;
import com.example.demo.pojo.Pasadena;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.List;

@Component
public class PasadenaUtil {
    public static final String PREFIX = "https://www.9ku.com/html/playjs/58/";
    public static final String SUFFIX = ".js";

    public static List<Pasadena> list(List<Integer> item) {
        //建立返參
        List<Pasadena> list = new ArrayList<>();
        // 遍歷組裝引數非同步請求
        item.forEach(arg -> {
            String url = PREFIX + arg + SUFFIX;
            String body = HttpRequest.post(url).timeout(2000)
                    .execute()
                    .body();
            // 剔除字串第一位
            String before = body.substring(1);
            // 剔除字串最後一位
            String after = before.substring(0, before.length() - 1);
            // 反序列化轉載至集合
            list.add(JSON.parseObject(after, Pasadena.class));
        });
        return list;
    }
}
 

4. 引入依賴

<!--hutool工具類 用於傳送非同步請求-->
<dependency>
	<groupId>cn.hutool</groupId>
	<artifactId>hutool-all</artifactId>
	<version>4.3.2</version>
</dependency>

5. 方法JSON返回

[
    {
        "id": "89467",
        "mname": "日不落",
        "singer": "蔡依林",
        "wma": "https://mp3.9ku.com/hot/2007/09-18/89467.mp3",
        "status": "1"
    },
    {
        "id": "64540",
        "mname": "風雨彩虹鏗鏘玫瑰",
        "singer": "田震",
        "wma": "https://mp3.9ku.com/hot/2005/03-01/64540.mp3",
        "status": "1"
    },
    {
        "id": "81668",
        "mname": "我的中國心",
        "singer": "張明敏",
        "wma": "https://mp3.9ku.com/hot/2007/02-24/81668.mp3",
        "status": "1"
    },
    {
        "id": "49180",
        "mname": "一千零一夜",
        "singer": "邰正宵",
        "wma": "https://mp3.9ku.com/hot/2004/07-17/49180.mp3",
        "status": "1"
    }
]