Question

我对使用android studio很陌生，在使用API时遇到了一些麻烦：https://developer.companieshouse.gov.uk/api/docs/search/companies/companysearch.html#here

我正在尝试发送JSON请求以在文本视图中显示，但是我需要使用授权密钥来进行发送，因此我很努力地发送GET请求。我意识到这可能是重复的帖子，但是我已经搜寻了几天以尝试实施解决方案，但尚未成功。下面是我的代码：

public class MainActivity extends AppCompatActivity {
    private TextView txtResult;
    private RequestQueue queue;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        queue = Volley.newRequestQueue(this);
        txtResult = findViewById(R.id.txtResult);
        Button buttonParse = findViewById(R.id.btnSearch);
        buttonParse.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                jsonParse();
            }
        });
    }

    private void jsonParse(){
        String url = "https://api.companieshouse.gov.uk/search/companies?q=tesco&items_per_page=1000&start_index=0";
        JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
            @Override
            public void onResponse(JSONObject response) {
                try {
                    JSONArray jsonArray = response.getJSONArray("items");
                    for (int i = 0; i < jsonArray.length(); i++){
                        JSONObject companies = jsonArray.getJSONObject(i);
                        String title = companies.getString("address_snippet");
                        txtResult.append(title);
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                error.printStackTrace();
            }
        }) {
            @Override
            public Map<String, String> getHeaders() throws AuthFailureError {
                String credentials = "MY_KEY";
                String base64EncodedCredentials = Base64.encodeToString(credentials.getBytes(), Base64.NO_WRAP);
                HashMap<String, String> headers = new HashMap<>();
                headers.put("Authorization", "Basic " + base64EncodedCredentials);
                return headers;
            }
        };
        queue.add(request);
    } 
}

JSON响应正文示例：

{
  "kind": "search#companies",
  "page_number": 1,
  "start_index": 0,
  "items": [
    {
      "address_snippet": "Tesco House, Shire Park, Kestrel Way, Welwyn Garden City, United Kingdom, AL7 1GA",
      "address": {
        "postal_code": "AL7 1GA",
        "locality": "Welwyn Garden City",
        "country": "United Kingdom",
        "address_line_1": "Kestrel Way",
        "premises": "Tesco House, Shire Park"
      },
      "company_type": "plc",
      "company_status": "active",
      "kind": "searchresults#company",

https://developer.companieshouse.gov.uk/api/docs/index/gettingStarted/apikey_authorisation.html

如果有帮助，上面的文档说明了如何发送API密钥（我似乎无法弄清楚）。目前，当单击按钮时，它什么也没做（我认为由于授权问题，不允许应用程序获取JSON），对此我将非常感谢！

Android Studio JSON GET请求授权标头问题

0 个答案: