Question

我开始使用Android Studio了，我想制作一个简单的应用程序来从URL中获取原始HTML。我已经使用http://developer.android.com/training/volley/simple.html上的基本示例设置了Volley来执行此操作，该示例适用于公共网址。

我想要访问的网址需要特定的标头和Cookie，我手头有静态值。如何将这些值分配给我的请求？

public void grabHTML(View view) {
    RequestQueue queue = Volley.newRequestQueue(this);
    String url = getString(R.string.urlpath);
    StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                   mTextView.setText(response);
                }
            }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            mTextView.setText(error.getMessage());
        }
    });
    queue.add(stringRequest);
}

编辑：

我能够应用How are cookies passed in the HTTP protocol?的解决方案手动设置我的请求标头。

Answer 1

使用此处的解决方案How are cookies passed in the HTTP protocol?手动为您的请求设置标头。我的代码最终看起来像这样：

package com.pesonal.webrequestexample;

import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.toolbox.StringRequest;

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

    public class StringRequestWithCookies extends StringRequest {
    private Map<String, String> cookies;

    public StringRequestWithCookies(String url, Map<String, String> cookies, Response.Listener<String> listener, Response.ErrorListener errorListener) {
        super(Request.Method.GET, url, listener, errorListener);
        this.cookies = cookies;
    }

    @Override
    public Map<String, String> getHeaders() throws AuthFailureError {
        HashMap<String, String> headers = new HashMap<String, String>();
        headers.put("header1","value");
        headers.put("header2","value");

        return headers;
    }
}

并在相关活动中......

public void grabHTML(View view) {
        String url = getString(R.string.urlpath);
        RequestQueue queue = Volley.newRequestQueue(this);
        StringRequestWithCookies stringRequest = new StringRequestWithCookies(
            url,getCookies(),
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        mTextView.setText(response);
                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                mTextView.setText(error.getMessage());
            }
        });
        queue.add(stringRequest);
    }

如何在Android中使用Volley手动设置自定义cookie和标头值？

1 个答案: