Java 从WebView以编程方式登录
在我的Android应用程序中,我使用web视图访问服务器提供的一些web映射数据。服务器需要一些基于HTTP表单的身份验证来允许访问这些数据。由于该站点没有移动版本,因此显示登录页面(或任何其他页面)看起来非常糟糕。不幸的是,我很难接触到该网站,因此我想到了以下方法:Java 从WebView以编程方式登录,java,android,apache,Java,Android,Apache,在我的Android应用程序中,我使用web视图访问服务器提供的一些web映射数据。服务器需要一些基于HTTP表单的身份验证来允许访问这些数据。由于该站点没有移动版本,因此显示登录页面(或任何其他页面)看起来非常糟糕。不幸的是,我很难接触到该网站,因此我想到了以下方法: 使用本机用户界面收集用户名和密码 认为Http post会将这些信息发送到服务器 收到响应后,获取服务器发送的cookies 将Cookie设置为web视图中的 尝试最终访问所需的数据 现在我只是想通过登录阶段 这是一个可行
- 使用本机用户界面收集用户名和密码
- 认为Http post会将这些信息发送到服务器
- 收到响应后,获取服务器发送的cookies
- 将Cookie设置为web视图中的
- 尝试最终访问所需的数据
private String authenticate() throws Exception
{
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://mySite/login_form");
HttpResponse response = null;
BufferedReader in = null;
String resultContent = null;
try
{
// Add data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("came_from", ""));
nameValuePairs.add(new BasicNameValuePair("form.submitted", "1"));
nameValuePairs.add(new BasicNameValuePair("js_enabled", "0"));
nameValuePairs.add(new BasicNameValuePair("cookies_enabled", ""));
nameValuePairs.add(new BasicNameValuePair("login_name", ""));
nameValuePairs.add(new BasicNameValuePair("pwd_empty", "0"));
nameValuePairs.add(new BasicNameValuePair("name", "username"));
nameValuePairs.add(new BasicNameValuePair("password", "password"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Create a local instance of cookie store
CookieStore cookieStore = new BasicCookieStore();
// Create local HTTP context
HttpContext localContext = new BasicHttpContext();
// Bind custom cookie store to the local context
localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);
// Execute HTTP Post Request
response = httpclient.execute(httppost,localContext);
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null)
{
sb.append(line + NL);
}
in.close();
resultContent = sb.toString();
Log.i("mytag","result :"+resultContent);
cookies = new java.util.ArrayList();
cookies = cookieStore.getCookies();
}
catch (ClientProtocolException e)
{
Log.i("mytag","Client protocol exception");
}
catch (IOException e)
{
Log.i("mytag","IOException");
}
catch(Exception e)
{
Log.i("mytag","Exception");
Log.i("mytag",e.toString());
}
return resultContent;
}
private String authenticate()引发异常
{
//创建一个新的HttpClient和Post头
HttpClient HttpClient=新的DefaultHttpClient();
HttpPost HttpPost=新的HttpPost(“http://mySite/login_form");
HttpResponse响应=null;
BufferedReader in=null;
字符串resultContent=null;
尝试
{
//添加数据
List nameValuePairs=新的ArrayList();
添加(新的BasicNameValuePair(“来自”、”);
添加(新的BasicNameValuePair(“提交的表格”,“1”));
添加(新的BasicNameValuePair(“已启用js_”,“0”);
添加(新的BasicNameValuePair(“cookies_enabled”);
添加(新的BasicNameValuePair(“登录名”);
添加(新的BasicNameValuePair(“pwd_empty”,“0”);
添加(新的BasicNameValuePair(“名称”、“用户名”);
添加(新的BasicNameValuePair(“密码”、“密码”));
setEntity(新的UrlEncodedFormEntity(nameValuePairs));
//创建cookie存储的本地实例
CookieStore CookieStore=新的BasicCookieStore();
//创建本地HTTP上下文
HttpContext localContext=新的BasicHttpContext();
//将自定义cookie存储绑定到本地上下文
setAttribute(ClientContext.COOKIE_存储,cookieStore);
//执行HTTP Post请求
response=httpclient.execute(httppost,localContext);
in=新的BufferedReader(新的InputStreamReader(response.getEntity().getContent());
StringBuffer sb=新的StringBuffer(“”);
字符串行=”;
字符串NL=System.getProperty(“line.separator”);
而((line=in.readLine())!=null)
{
sb.追加(行+NL);
}
in.close();
resultContent=sb.toString();
Log.i(“mytag”,“结果:+resultContent”);
cookies=new java.util.ArrayList();
cookies=cookieStore.getCookies();
}
捕获(客户端协议例外e)
{
Log.i(“mytag”,“客户端协议异常”);
}
捕获(IOE异常)
{
Log.i(“mytag”、“IOException”);
}
捕获(例外e)
{
Log.i(“mytag”、“例外”);
Log.i(“mytag”,例如toString());
}
返回结果内容;
}
B.设置cookies并加载所需页面
private void init()
{
CookieSyncManager.createInstance(this);
CookieManager cookieMan= CookieManager.getInstance();
cookieMan.setAcceptCookie(true);
cookies = StartupActivity.listAfter;
if(cookies != null)
{
for (int i = 0; i<cookies.size(); i++)
{
Cookie cookie = cookies.get(i);
cookieMan.setCookie("cookie.getDomain()",cookie.getValue());
}
}
CookieSyncManager.getInstance().sync();
webView = (WebView)findViewById(R.id.web_view);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.setWebViewClient(new HelloWebViewClient());
}
protected void onResume()
{
super.onResume();
// test if the we logged in
webView.loadUrl("mySite/myDesiredFeature");
}
private void init()
{
CookieSyncManager.createInstance(此);
CookieManager cookieMan=CookieManager.getInstance();
cookieMan.setAcceptCookie(真);
cookies=StartupActivity.listAfter;
如果(cookies!=null)
{
对于(int i=0;i1),首先尝试发出HttpGet请求,获取cookies,然后执行HttpPost。我认为这种方式不应该手动添加cookies。
使用一个HttpClient来执行此操作
2) 而不是
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null)
{
sb.append(line + NL);
}
in.close();
resultContent = sb.toString();
使用
EntityUtils.toString(response.getEntity())。我可能也会这么做