Android使用Volley在REST GET调用的头部中传递json

import com.android.volley.AuthFailureError;
import com.android.volley.Response;
import com.android.volley.toolbox.JsonObjectRequest;

import org.json.JSONObject;

import java.util.HashMap;
import java.util.Map;

public class JsonHeaderRequest extends JsonObjectRequest {

    private JSONObject jsonBody;

    public JsonHeaderRequest(int method, String url, JSONObject jsonBody, Response.Listener<JSONObject> listener, Response.ErrorListener errorListener) {
        super(method, url, null, listener, errorListener);
        this.jsonBody = jsonBody;
    }

    @Override
    public Map<String, String> getHeaders() throws AuthFailureError {
        Map<String, String> headers = new HashMap<>();
        headers.put("Content-Type", "application/json");
        return headers;
    }

    @Override
    public byte[] getBody() {
        return jsonBody.toString().getBytes();
    }
}

JSONObject jsonBody = new JSONObject();
try {
    jsonBody.put("key1", "value1");
    jsonBody.put("key2", "value2");
} catch (JSONException e) {
    e.printStackTrace();
}

String url = "https://example.com/api/endpoint";
JsonHeaderRequest request = new JsonHeaderRequest(Request.Method.GET, url, jsonBody,
        new Response.Listener<JSONObject>() {
            @Override
            public void onResponse(JSONObject response) {
                // 请求成功的回调处理
            }
        },
        new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                // 请求失败的回调处理
            }
        });

// 将请求添加到请求队列中
RequestQueue queue = Volley.newRequestQueue(context);
queue.add(request);