使用android中的okhttp在Webview中的每个请求发送授权标头 [英] Send authorization header with every request in webview using okhttp in android
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问题描述
我正在使用WebView来显示网页，但是服务器需要来自我的Webview的每个请求的授权令牌.有人知道这是否可能吗? 我在#SO adding-header-to-all-request中引用了此帖子-with-retrofit-2 .但是我无法得到结果.
I am using WebView to display web page, but the server expects an authorization token with every request from my webview. Anybody know if this is possible ? I referred this post in #SO adding-header-to-all-request-with-retrofit-2. But I'm not able to get the result.
这是我的代码(不熟悉我的编码标准，我是初学者)
This is my code (bare with my coding standard, I'm a beginner)
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;
}
}
};
}
}
感谢您的帮助
编辑
现在我能够获得服务器响应，但是使用纯HTML格式，无法正确呈现CSS，不知道为什么.
Now I am able to get the server response but in plain html, not rendering the css properly, don't know why.
这是新代码，
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;
}
}
};
}
在stacktrace中找到了这个，在stacktrace中仅此
And found this in stacktrace, nothing more in stacktrace
E/DataReductionProxySettingListener: No DRP key due to exception:java.lang.ClassNotFoundException: com.android.webview.chromium.Drp
推荐答案
最后，这将纠正html呈现问题(对不起，我之前没有注意到).
Finally this will rectify the html rendering issue (Pardon me, I didn't notice this earlier).
更改content-type in
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());
到text/html，因此新代码是
return new WebResourceResponse(response.header("text/html", 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());
如果我的解决方案需要任何修改，请随时进行编辑.始终接受更好的解决方案.祝您编程愉快...感谢大家#SO随时准备提供帮助.
If my solution needs any modifications, feel free to edit. Always accept better solutions. Happy coding...And Thanks everyone #SO ready to help.
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