4
我正在使用WebView來顯示網頁，但服務器期望有來自我的webview的每個請求的授權令牌。有人知道這是可能的嗎？ 我在#SO adding-header-to-all-request-with-retrofit-2中提到過這篇文章。但我無法得到結果。在webview中使用okhttp在webview中發送每個請求的授權標頭
這是我的代碼（裸與我的編碼標準，我是一個初學者）
public class TableViewTest extends AppCompatActivity {
ScrollView scrollView;
WebView webView;
SharedPreferences pref;
@SuppressLint("SetJavaScriptEnabled")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_table_view_test);
//final ProgressDialog pd = ProgressDialog.show(this, "", "Loading...", true);
webView = (WebView) findViewById(R.id.webView1Id)
webView.setVerticalScrollBarEnabled(true);
webView.setHorizontalScrollBarEnabled(true);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.setWebViewClient(new WebViewClient() {
@SuppressWarnings("deprecation")
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
//return true load with system-default-browser or other browsers, false with your webView
pref = getSharedPreferences("app", Context.MODE_PRIVATE);
final String acToken = pref.getString("token", "DEFAULT");
HashMap<String, String> headerMap = new HashMap<>();
//put all headers in this header map
headerMap.put("Authorization", acToken);
view.loadUrl(url, headerMap);
return false;
}
@Override
public void onLoadResource(WebView view, String url) {
super.onLoadResource(view, url);
}
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
}
});
webView.loadUrl("myurl");
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
webView.saveState(outState);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
webView.restoreState(savedInstanceState);
}
public WebViewClient getWebViewClientWithCustomHeader(){
pref = getSharedPreferences("app", Context.MODE_PRIVATE);
final String acToken = pref.getString("token", "DEFAULT");
return new WebViewClient() {
@SuppressWarnings("deprecation")
public WebResourceResponse shouldInterceptRequest(WebView view, String url){
try {
OkHttpClient okHttpClient = new OkHttpClient();
Request request = new Request.Builder().url(url).addHeader("Authorization" , "Bearer " + acToken)
.build();
Response response = okHttpClient.newCall(request).execute();
return new WebResourceResponse(response.header("content-type", response.body().contentType().type()), // You can set something other as default content-type
response.header("content-encoding", "utf-8"), // Again, you can set another encoding as default
response.body().byteStream());
} catch (ClientProtocolException e) {
//return null to tell WebView we failed to fetch it WebView should try again.
return null;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
};
}
}
任何幫助表示讚賞
編輯
現在我能得到服務器的響應，但在純HTML中，沒有正確渲染的CSS，不知道爲什麼。
這裏是新的代碼，
public class TableViewTest extends AppCompatActivity {
ScrollView scrollView;
WebView webView;
SharedPreferences pref;
@SuppressLint("SetJavaScriptEnabled")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_table_view_test);
//final ProgressDialog pd = ProgressDialog.show(this, "", "Loading...", true);
String url = "myurl";
pref = getSharedPreferences("app", Context.MODE_PRIVATE);
webView = (WebView) findViewById(R.id.webView1Id);
webView.setVerticalScrollBarEnabled(true);
webView.setHorizontalScrollBarEnabled(true);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.setWebViewClient(wvc);
webView.loadUrl("myurl");
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
webView.saveState(outState);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
webView.restoreState(savedInstanceState);
}
public WebViewClient wvc = new WebViewClient() {
@SuppressWarnings("deprecation")
public WebResourceResponse shouldInterceptRequest(WebView view, String url){
try {
final String acToken = pref.getString("token", "DEFAULT");
OkHttpClient okHttpClient = new OkHttpClient();
Request request = new Request.Builder().url(url).addHeader("Authorization" , "Bearer " + acToken)
.build();
Response response = okHttpClient.newCall(request).execute();
return new WebResourceResponse(response.header("content-type", response.body().contentType().type()), // You can set something other as default content-type
response.header("content-encoding", "utf-8"), // Again, you can set another encoding as default
response.body().byteStream());
} catch (ClientProtocolException e) {
//return null to tell WebView we failed to fetch it WebView should try again.
return null;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
};
}
，發現這在堆棧跟蹤，沒有什麼更多的堆棧跟蹤
E/DataReductionProxySettingListener: No DRP key due to exception:java.lang.ClassNotFoundException: com.android.webview.chromium.Drp
請發佈任何日誌，您收到的錯誤。也許仔細檢查一下，服務器不希望帶有Authentication值的前綴（「承載者」）。 – asadmshah
@asadmshah到現在爲止沒有任何錯誤，我只是重新編輯了代碼，現在在webview中獲得純HTML，現在服務器正在獲取我的身份驗證令牌標頭。請參閱編輯問題 –
@asadmshah只有登錄的用戶才能訪問網頁，我的PHP後端使用用戶的承載認證。所以我必須通過「Bearer」+ tokenValue來訪問網頁。 –