Question

我正在尝试解析一些JSON。我最近一直试图在android studio中使用 GSON 这样做。但是，我似乎无法获得连接或对数据做任何事情。我想看的数据，如果我能从网站上获得它，将会是这样的：

{"item":{"icon":"address_here",
id=820","id":820,"type":"Default",
"typeIcon":"catagory","name":"Name of Object",
"description":"This is an annoying issue to get stuck on"}}

我一直在使用异步，但无济于事。也许一种看待这种情况的新方法会很好。

这是我目前的代码：

    public class JavaParser extends AsyncTask<String, String, String> {
public String getInternetData() throws Exception {
    String sURL = "someurl.com"; //just a string

    // Connect to the URL using java's native library

    try {
        URL url = new URL(sURL);
        HttpURLConnection request = (HttpURLConnection) url.openConnection();
        Log.d("Debug:", "Made partial connection");
        try {
            request.connect();
        } catch (IOException e1) {
            e1.printStackTrace();
        }
        Log.d("Debug:", "Made connection");
    }
    catch(Exception e){

    }
    return "FAILURE";
}
private String response = null;

@Override
protected String doInBackground(String...params) {
    try {
        response = new JavaParser().getInternetData();
    }
    catch(Exception e){
    Log.d("Error",e.getMessage()
    );
    }
    return response;
}

}

在我的主要课程中：

    String response = new JavaParser().execute("URL").get();        //eventually I hope to pass the url here to be more dynamic
        //Convert to a JSON object to print data
        JsonParser jp = new JsonParser(); //from gson
        JsonElement root = jp.parse(new InputStreamReader((InputStream) request.getContent())); //Convert the input stream to a json element
        JsonObject rootobj = root.getAsJsonObject(); //May be an array, may be an object.

        Gson gson = new Gson();
        Wrapper response = gson.fromJson(rootobj, Wrapper.class);


        Log.d("Out: ",rootobj.get("item\name").getAsString()); //just grab the name info

我的包装看起来像这样：

    public class Wrapper   {

@SerializedName("name")
public String item_name;

@SerializedName("icon")
public String iconURL;

@SerializedName("description")
public  String item_description;

//more to be added if it works

}

程序只进行部分连接。我似乎无法得到这条线 request.connect（）; 无论如何运作。

Answer 1

事实证明，许可是清单的错误部分。它需要靠近顶部，我把它作为这样的

    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.yargonauts.burk.app">
<uses-permission android:name="android.permission.INTERNET" />

在Android Studio中从URL解析Json

1 个答案: