HttpURLConnection webview sessionId 连贯性

本文详细阐述了在HTTP请求中获取和使用session的过程,包括使用Cookie存储session ID,以及如何在不同服务器间的session一致性问题。

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GlobalVars.serviceUrl = http://192.168.0.106:8080/text/login.jsp

1 获取 HttpURLConnection 返回的 cookie 和内部的 sessionId

sessionId格式如 JSESSIONID=XXXXXXXXXXXX.tomcat1 不同的服务器SESSION名字是不一样的,

这里我们暂时认为都含有SESSIONID

responseCode = conn.getResponseCode();
if (responseCode == HttpURLConnection.HTTP_OK) {
	InputStream response_in = conn.getInputStream(); 

	GlobalVars.HttpSetCookies = conn.getHeaderFields().get("Set-Cookie");
	if(GlobalVars.HttpSessionid==null){
		for(String value:GlobalVars.HttpSetCookies){
			//默认情况下 SESSION_ID_NAME 必定含有 SESSIONID
			if(value.toUpperCase().indexOf("SESSIONID")>0){
				GlobalVars.HttpSessionid = value;
			}
		}	
	
	}
}


2 HttpURLConnection提交时加入 sessionId

url = new URL(str_remotecallservlerurl);
conn = (HttpURLConnection)url.openConnection();
if(GlobalVars.HttpSessionid !=null ){
	conn.setRequestProperty("Cookie",GlobalVars.HttpSessionid);
}


3 webview 初始化前 将cookie写入activity的本地即可

	CookieSyncManager.createInstance(this);  
	CookieManager cookieManager = CookieManager.getInstance();  
	cookieManager.setCookie(GlobalVars.serviceUrl, GlobalVars.HttpSetCookies.toString()); 	    		
	CookieSyncManager.getInstance().sync(); 


 

 

package test; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.util.List; import java.util.Map; public class HttpTest { private HttpURLConnection hc = null; private static final String oneUrlString = "http://xxx.jsp"; private static final String twoUrlString = "http://xxx.action"; public String getSessionId() { String sessionId = ""; try { URL url = new URL(oneUrlString); hc = (HttpURLConnection) url.openConnection();//默认的用GET提交 hc.setDoOutput(true); hc.connect(); Map map = hc.getHeaderFields(); //得到Cookie的所有内容,包括SESSIONID,在进行下次提交的时候 直接把这个Cookie的值设到头里头就行了 //淡然只得到SESSIONID也很简单的 ,但是有时候Set-Cookie的值有几个的 List list = (List) map.get("Set-Cookie"); if(list.size() == 0||list == null) { return null; } StringBuilder builder = new StringBuilder(); for(String str : list) { sessionId = builder.append(str).toString(); } hc.disconnect(); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return sessionId; } public String getResponseContext(String parameters) { String responseContext = ""; try { URL url = new URL(twoUrlString); hc = (HttpURLConnection) url.openConnection();//使用POST提交 hc.addRequestProperty("Cookie", getSessionId()); hc.setDoOutput(true); hc.connect(); OutputStream out = hc.getOutputStream(); //参数是a=""&b=""这样拼接的一个串 out.flush(); out.close(); out.write(parameters.getBytes(),0,parameters.getBytes().length); InputStream in = hc.getInputStream(); InputStreamReader reader = new InputStreamReader(in,"gb2312"); BufferedReader read = new BufferedReader(reader); StringBuilder builder = new StringBuilder(); String str = ""; while((str = read.readLine()) != null) { builder = builder.append(str); } read.close(); reader.close(); in.close(); hc.disconnect(); responseContext = builder.toString(); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return responseContext; } }
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