1.拦截post的请求在其中添加请求头。

在WebViewClient()中使用shouldInterceptRequest方法进行拦截；注意在api21以下使用

public WebResourceResponse shouldInterceptRequest(WebView view, String url){}；api21以上public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request){}。目前比较方便的在public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request)中进行拦截，因为request中提供了判断了请求方式的方法以及获取请求头的方法。虽然可以添加请求但是无法获取请求体部分(官方没有提供获取请求体的方法)，抓包时发现没有请求体。

在api21以下只提供地址无法判断是post还是get请求。有谁有好的方法麻烦告知以下。

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)

@Nullable

@Override

public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {

if (request.getMethod().equalsIgnoreCase("post")){

URL url= null;

try {

LogUtil.i("11111111111=====request.getUrl().toString()==="+request.getUrl().toString());

url = new URL(request.getUrl().toString());

HttpURLConnection connection= (HttpURLConnection) url.openConnection();

connection.setDoInput(true);

connection.setDoOutput(true);

connection.setUseCaches(false);

connection.setRequestMethod("POST");

Map requestHeaders = request.getRequestHeaders();

for (Map.Entry entry : requestHeaders.entrySet()) {

connection.setRequestProperty(entry.getKey(), entry.getValue());

}

String version = APKUtil.getVerName(TaskCenterActivity.this);

int systemVersion = APKUtil.getSystemVersion();

connection.setRequestProperty("Authorization", MyApplication.getAppUser().getAccess_token());

connection.setRequestProperty("Bp-Channel","Android/" + version + "/" + systemVersion);

// String params = "\nBp-Channel:" + "Android/" + version + "/" + systemVersion + "\nAuthorization:" + MyApplication.getAppUser().getAccess_token();

// DataOutputStream os=new DataOutputStream(connection.getOutputStream());

// os.writeBytes(params);

return new WebResourceResponse("text/html", connection.getContentEncoding(), connection.getInputStream());

} catch (Exception e) {

e.printStackTrace();

}

}

return super.shouldInterceptRequest(view,request);

}