java使用安卓中的okhttp在webview中发送每个请求的授权头
我正在使用WebView显示网页,但服务器希望来自我的WebView的每个请求都有一个授权令牌。有人知道这是否可能吗? 我在#SOadding-header-to-all-request-with-retrofit-2中引用了这篇文章。但是我不能得到结果
这是我的代码(与我的编码标准完全一致,我是初学者)
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;
}
}
};
}
}
谢谢你的帮助
编辑
现在我能够得到服务器的响应,但是在纯html中,没有正确地呈现css,我不知道为什么
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中没有更多
E/DataReductionProxySettingListener: No DRP key due to exception:java.lang.ClassNotFoundException: com.安卓.webview.chromium.Drp
# 1 楼答案
最后,这将纠正html呈现问题(对不起,我之前没有注意到这一点)
更改中的
content-type
到
text/html
,因此新代码是如果我的解决方案需要任何修改,请随意编辑。总是接受更好的解决方案。快乐编码。。。感谢所有愿意帮忙的人
# 2 楼答案
Sudheesh的回答很好,以下是更新版本,因为
shouldOverrideUrlLoading(WebView view, String url)
在API 21中被弃用:# 3 楼答案
这可能不能回答你的问题,但我认为这对其他有类似问题的人会有帮助
如果服务器资源需要这样的基本身份验证头
Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=
,那么您应该像这样重写WebViewClient中的onReceivedHttpAuthRequest
方法还请注意,如果可能,您应该始终避免拦截WebView请求。阅读更多关于它的信息here