Java：从http url获取json（使用json.org api）

我当前正在尝试用java（）接收此url

问题是，我可以完美地读取任何以.json结尾的文件，但由于.php（我认为）的缘故，它对这个文件不起作用。 另外，如果有人能告诉我如何将item_name之类的东西放入我可以使用的变量中？那太好了

我的代码：

URL u;
        try {
            u = new URL("https://api.wynncraft.com/public_api.php?action=items&command=75");

            URLConnection c = u.openConnection();
            InputStream r = c.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(r));
            for (String line; (line = reader.readLine()) != null;)
                System.out.println(line);
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

---

这有点神秘，你应该能够确定变量值。

如果使用PHP，JSON的结构就是这样的：

$json = json_decode($data,true); 

k1，k2表示结构中的级别。

-------------------------------
k0 request => array( 
  k1: timestamp => integer:  $json['request']['timestamp'] => 1430494697
  k1: ip => string:  $json['request']['ip'] => 108.162.210.100
)
-------------------------------
k0 0 => array( 
  k1: item_name => string:  $json[0]['item_name'] => Bob's Mythic Bow
  k1: item_type => string:  $json[0]['item_type'] => Legendary
  k1: item_minecraft => string:  $json[0]['item_minecraft'] => Bow
  k1: item_min_lvl => string:  $json[0]['item_min_lvl'] => 75
  k1 identification => array(
    k2: health_regen => string:  $json[0]['identification']['health_regen'] => 1.5
    k2: mana_regen => string:  $json[0]['identification']['mana_regen'] => 1
    k2: spell_dam => string:  $json[0]['identification']['spell_dam'] => 30%
    k2: life_steal => string:  $json[0]['identification']['life_steal'] => 0.4
    k2: mana_steal => string:  $json[0]['identification']['mana_steal'] => 1
    k2: xp_bonus => string:  $json[0]['identification']['xp_bonus'] => 20%
    k2: loot_bonus => string:  $json[0]['identification']['loot_bonus'] => 20%
  )
  k1: min_dam => string:  $json[0]['min_dam'] => 566
  k1: max_dam => string:  $json[0]['max_dam'] => 463
)
-------------------------------
k0 1 => array( 
  k1: item_name => string:  $json[1]['item_name'] => Bob's Mythic Daggers
  k1: item_type => string:  $json[1]['item_type'] => Legendary
  k1: item_minecraft => string:  $json[1]['item_minecraft'] => Shears
  k1: item_min_lvl => string:  $json[1]['item_min_lvl'] => 75
  k1 identification => array(
    k2: health_regen => string:  $json[1]['identification']['health_regen'] => 1.5
    k2: mana_regen => string:  $json[1]['identification']['mana_regen'] => 1
    k2: spell_dam => string:  $json[1]['identification']['spell_dam'] => 30%
    k2: life_steal => string:  $json[1]['identification']['life_steal'] => 0.4
    k2: mana_steal => string:  $json[1]['identification']['mana_steal'] => 1
    k2: xp_bonus => string:  $json[1]['identification']['xp_bonus'] => 20%
    k2: loot_bonus => string:  $json[1]['identification']['loot_bonus'] => 20%
  )
  k1: min_dam => string:  $json[1]['min_dam'] => 420
  k1: max_dam => string:  $json[1]['max_dam'] => 389
)
-------------------------------
k0 2 => array( 
  k1: item_name => string:  $json[2]['item_name'] => Bob's Mythic Spear
  k1: item_type => string:  $json[2]['item_type'] => Legendary
  k1: item_minecraft => string:  $json[2]['item_minecraft'] => Shovel
  k1: item_min_lvl => string:  $json[2]['item_min_lvl'] => 75
  k1 identification => array(
    k2: health_regen => string:  $json[2]['identification']['health_regen'] => 1.5
    k2: mana_regen => string:  $json[2]['identification']['mana_regen'] => 1
    k2: spell_dam => string:  $json[2]['identification']['spell_dam'] => 30%
    k2: life_steal => string:  $json[2]['identification']['life_steal'] => 0.4
    k2: mana_steal => string:  $json[2]['identification']['mana_steal'] => 1
    k2: xp_bonus => string:  $json[2]['identification']['xp_bonus'] => 20%
    k2: loot_bonus => string:  $json[2]['identification']['loot_bonus'] => 20%
  )
  k1: min_dam => string:  $json[2]['min_dam'] => 368
  k1: max_dam => string:  $json[2]['max_dam'] => 311
)
-------------------------------
k0 3 => array( 
  k1: item_name => string:  $json[3]['item_name'] => Bob's Mythic Wand
  k1: item_type => string:  $json[3]['item_type'] => Legendary
  k1: item_minecraft => string:  $json[3]['item_minecraft'] => Stick
  k1: item_min_lvl => string:  $json[3]['item_min_lvl'] => 75
  k1 identification => array(
    k2: health_regen => string:  $json[3]['identification']['health_regen'] => 1.5
    k2: mana_regen => string:  $json[3]['identification']['mana_regen'] => 1
    k2: spell_dam => string:  $json[3]['identification']['spell_dam'] => 30%
    k2: life_steal => string:  $json[3]['identification']['life_steal'] => 0.4
    k2: mana_steal => string:  $json[3]['identification']['mana_steal'] => 1
    k2: xp_bonus => string:  $json[3]['identification']['xp_bonus'] => 20%
    k2: loot_bonus => string:  $json[3]['identification']['loot_bonus'] => 20%
  )
  k1: min_dam => string:  $json[3]['min_dam'] => 278
  k1: max_dam => string:  $json[3]['max_dam'] => 204
)

#################################################################

具有输出类型的数组构造摘要

#################################################################

1 $json[int]['identification']['health_regen'] string
1 $json[int]['identification']['mana_regen'] string
1 $json[int]['identification']['spell_dam'] string
1 $json[int]['identification']['life_steal'] string
1 $json[int]['identification']['mana_steal'] string
1 $json[int]['identification']['xp_bonus'] string
1 $json[int]['identification']['loot_bonus'] string

从（或使用Maven）下载json.api JAR

更改代码以读取整个字符串，而不仅仅是一行

然后执行类似的操作以获得所需的值

import org.json.*;

JSONParser JSON = new JSONParser();
JSONObject obj = JSON.parse(line);

String hr0 = obj.getJSONObject("0")
        .getJSONObject("Identification")
        .getString("health_regen");

---

究竟是什么问题？