android 封装get请求，包含header data cookie file，并简单调用

好的，下面是一个简单的封装了 header、data、cookie 和 file 的 GET 请求的示例代码：

public class HttpUtil {
    private static final String CHARSET_UTF8 = "UTF-8";

    public static void sendGetRequest(String url, Map<String, String> headers,
            Map<String, String> params, Map<String, File> files, String cookie,
            final Callback callback) {
        // 创建请求参数字符串
        StringBuilder paramBuilder = new StringBuilder();
        if (params != null && !params.isEmpty()) {
            for (Map.Entry<String, String> entry : params.entrySet()) {
                paramBuilder.append(entry.getKey()).append("=")
                        .append(URLEncoder.encode(entry.getValue(), CHARSET_UTF8)).append("&");
            }
            paramBuilder.deleteCharAt(paramBuilder.length() - 1);
        }
        String paramString = paramBuilder.toString();

        // 创建请求 URL
        if (!TextUtils.isEmpty(paramString)) {
            if (!url.endsWith("?")) {
                url += "?";
            }
            url += paramString;
        }

        // 创建请求对象
        HttpGet request = new HttpGet(url);

        // 添加请求头
        if (headers != null && !headers.isEmpty()) {
            for (Map.Entry<String, String> entry : headers.entrySet()) {
                request.addHeader(entry.getKey(), entry.getValue());
            }
        }

        // 添加 Cookie
        if (!TextUtils.isEmpty(cookie)) {
            request.addHeader("Cookie", cookie);
        }

        // 创建请求体
        MultipartEntityBuilder builder = MultipartEntityBuilder.create();
        builder.setCharset(Charset.forName(CHARSET_UTF8));

        // 添加文件
        if (files != null && !files.isEmpty()) {
            for (Map.Entry<String, File> entry : files.entrySet()) {
                builder.addPart(entry.getKey(), new FileBody(entry.getValue()));
            }
        }

        // 设置请求体
        request.setEntity(builder.build());

        // 发送请求
        new AsyncTask<Void, Void, String>() {
            @Override
            protected String doInBackground(Void... params) {
                try {
                    HttpResponse response = new DefaultHttpClient().execute(request);
                    if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                        HttpEntity entity = response.getEntity();
                        if (entity != null) {
                            return EntityUtils.toString(entity);
                        }
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
                return null;
            }

            @Override
            protected void onPostExecute(String result) {
                if (callback != null) {
                    callback.onResponse(result);
                }
            }
        }.execute();
    }

    public interface Callback {
        void onResponse(String result);
    }
}

使用示例：

Map<String, String> headers = new HashMap<>();
headers.put("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3");

Map<String, String> params = new HashMap<>();
params.put("key1", "value1");
params.put("key2", "value2");

Map<String, File> files = new HashMap<>();
files.put("file1", new File("path/to/file1"));
files.put("file2", new File("path/to/file2"));

String cookie = "name=value; name2=value2";

HttpUtil.sendGetRequest("http://www.example.com", headers, params, files, cookie, new HttpUtil.Callback() {
    @Override
    public void onResponse(String result) {
        // 处理响应结果
    }
});