网络请求(XUtils)+JSON解析(Gson)

╰半夏微凉° 2022-08-01 03:12 227阅读 0赞

网络请求可以使用开源框架XUtils：

使用方法如下：

<pre name="code" class="java">HttpUtils httpUtils = new HttpUtils();

//<span style="font-family: Arial, Helvetica, sans-serif;"> GlobalContants.CATEGORIES_URL是请求数据的地址</span>
    
    		httpUtils.send(HttpMethod.GET, GlobalContants.CATEGORIES_URL, new RequestCallBack<String>() {
    
    			@Override
    			public void onSuccess(ResponseInfo responseInfo) {
    				result = (String) responseInfo.result;
    				Log.e("tag", result);
    			}
    
    			@Override
    			public void onFailure(HttpException error, String msg) {
    				Toast.makeText(mActivity, "请求失败", 0).show();
    				error.printStackTrace();
    			}
    		});

解析JSON数据可以使用Gson

使用方法：

Gson gson = new Gson();//初始化
    NewsData data = gson.fromJson(result, NewsData.class);//result为请求后返回的JSON数据,可以直接使用XUtils获得,NewsData.class为一个bean.如以下数据：

<pre name="code" class="html"><pre name="code" class="java">{
    
        "retcode": 200,
        "data": 
    
    [
    
    {
    
        "id": 10000,
        "title": "新闻",
        "type": 1,
        "children": 
    
    [
    
    {
    
        "id": 10007,
        "title": "北京",
        "type": 1,
        "url": "/10007/list_1.json"
    
    },
    {
    
        "id": 10006,
        "title": "中国",
        "type": 1,
        "url": "/10006/list_1.json"
    
    },
    {
    
        "id": 10008,
        "title": "国际",
        "type": 1,
        "url": "/10008/list_1.json"
    
    },
    {
    
        "id": 10010,
        "title": "体育",
        "type": 1,
        "url": "/10010/list_1.json"
    
    },
    {
    
        "id": 10091,
        "title": "生活",
        "type": 1,
        "url": "/10091/list_1.json"
    
    },
    {
    
        "id": 10012,
        "title": "旅游",
        "type": 1,
        "url": "/10012/list_1.json"
    
    },
    {
    
        "id": 10095,
        "title": "科技",
        "type": 1,
        "url": "/10095/list_1.json"
    
    },
    {
    
        "id": 10009,
        "title": "军事",
        "type": 1,
        "url": "/10009/list_1.json"
    
    },
    {
    
        "id": 10093,
        "title": "时尚",
        "type": 1,
        "url": "/10093/list_1.json"
    
    },
    {
    
        "id": 10011,
        "title": "财经",
        "type": 1,
        "url": "/10011/list_1.json"
    
    },
    {
    
        "id": 10094,
        "title": "育儿",
        "type": 1,
        "url": "/10094/list_1.json"
    
    },
    
            {
                "id": 10105,
                "title": "汽车",
                "type": 1,
                "url": "/10105/list_1.json"
            }
        ]
    
    },
    {
    
        "id": 10002,
        "title": "专题",
        "type": 10,
        "url": "/10006/list_1.json",
        "url1": "/10007/list1_1.json"
    
    },
    {
    
        "id": 10003,
        "title": "组图",
        "type": 2,
        "url": "/10008/list_1.json"
    
    },
    
        {
            "id": 10004,
            "title": "互动",
            "type": 3,
            "excurl": "",
            "dayurl": "",
            "weekurl": ""
        }
    
    ]
    }

写成bean为：

public class NewsData {
    
    	public int retcode;
    	public ArrayList<NewsMenuData> data;
    
    	public class NewsMenuData {
    		public String id;
    		public String title;
    		public int type;
    		public String url;
    
    		public ArrayList<NewsTabData> children;
    
    		@Override
    		public String toString() {
    			return "NewsMenuData [title=" + title + ", children=" + children + "]";
    		}
    
    	}
    
    	public class NewsTabData {
    		public String id;
    		public String title;
    		public int type;
    		public String url;
    	}
    
    	@Override
    	public String toString() {
    		return "NewsData [data=" + data + "]";
    	}
    
    }