IOS UIWebView automatic login verification via cookies

<span id="Label3"></p><p><p><strong>Description</strong></p></p> <ol> <ol> <li>After logging in Via uiwebview, the cookies that are automatically set up by the Web server include the Seesionid in the Server.</li> <li>Cookies are not automatically saved in the app and need to be set up to be available the next time the app is Launched.</li> <li>Automatic login, you need to set the header to bring cookies to the Web Server.</li> <li>Automatic login, requires cookie authentication on the Web server side to log in.</li> </ol> </ol><p><p></p></p><p><p><strong>Implementation Process:</strong></p></p>1. After you have done the sign in page, submit the form to the Web server via get or post, and you can traverse the resulting cookie through the following Code.<pre class="prettyprint perl"><pre class="prettyprint perl"><span class="variable">*mycookie = [nshttpcookiestorage sharedhttpcookiestorage];<br><span class="keyword"><span class="variable">*cookie in [mycookie cookies]) { NSLog (<span class="variable">@ "<span class="variable">%@<span class="string">", cookies);}</span> </span> </span></span></span></span></pre></pre>2. In order to achieve automatic login, the cookie needs to be saved so that it can log on automatically, just add a line of Code.<pre class="prettyprint perl"><pre class="prettyprint perl"><span class="variable">*mycookie = [nshttpcookiestorage sharedhttpcookiestorage]; <span class="keyword"> <span class="variable">*cookie in [mycookie cookies]) { NSLog (<span class="variable">@ "<span class="variable">%@<span class="string">", cookies); [[nshttpcookiestorage sharedhttpcookiestorage] setcookie:cookie]; save}</span> </span> </span> </span></span></span></pre></pre><p><p>3. When logging in automatically, the last saved cookie needs to be taken out to set the header to the Web server with the following Code.</p></p><pre class="prettyprint cs"><span class="comment">Look for the URL to host the relevant cookie, do not worry, Step 2 has automatically set a cookie for the relevant URL information nsarray *cookies = [[nshttpcookiestorage sharedhttpcookiestorage] Cookiesforurl:[nsurl urlwithstring:host];<span class="comment">The host here is the domain address of your web Server.<span class="comment"><span class="comment">//such as your previous login site address is abc.com (of course, if you want to add HTTP +//, if your server needs port number can also add the upper slogan), then the host is Http://abc.com<span class="comment">//set The header by traversing the cookie to one of the settings Header<span class="keyword">for (nshttpcookie *cookie <span class=" Keyword ">in cookies" {<span class="comment">//cookieswithresponseheaderfields method, Need to set a Cookie for the URL of the Nsdictionary type header, Note that nsdictionary inside the forkey need to be @ "set-cookie" nsarray *headeringcookie = [ Nshttpcookie cookieswithresponseheaderfields: [nsdictionary dictionarywithobject: [[NSString alloc] initWithFormat:< Span class= "string" >@ "%@=%@", [cookie name],[cookie <span class="keyword">value]] forkey:<span class="string">@ " Set-cookie "] Forurl:[nsurl urlwithstring:host]; <span class="comment">//through The Setcookies method to complete the setup so that whenever a Web page with a URL of host is visited, it is automatically accompanied by a set header [[nshttpcookiestorage sharedhttpcookiestorage] Setcookies:headeringcookie Forurl:[nsurl urlwithstring:host] mainDocumentURL:nil]; }</span></span></span></span></span></span></span></span></span></span></span></pre><p><p>4. The Web server validates the cookie information that comes with the app to complete the Login.</p></p><p><p>If the page you are visiting does not have a cookie-validated code, then go to a page that has a validation cookie such as *loginaction, or tell your colleague to verify the login by adding a cookie to the page you are visiting.</p></p><p><p>IOS UIWebView automatic login verification via cookies</p></p></span>