什么情况下,从登入页面到index页面时,理论上login到index,可以得到cookie,会有jsessionId,但是获取的时候是空;代码:
public static void main(String[] args) {
// 登陆 Url
String loginUrl = "http://192.168.1.127:8080/propertyLogin.html";
// 需登陆后访问的 Url
String dataUrl = "http://192.168.1.127:8080/propertyadmin/index.do";
HttpClient httpClient = new HttpClient();
// 模拟登陆,按实际服务器端要求选用 Post 或 Get 请求方式
PostMethod postMethod = new PostMethod(loginUrl);
// 设置登陆时要求的信息,用户名和密码
NameValuePair[] data = { new NameValuePair("userName", "10000000002"),
new NameValuePair("passWord", "123456") };
postMethod.setRequestBody(data);
try {
// 设置 HttpClient 接收 Cookie,用与浏览器一样的策略
httpClient.getParams().setCookiePolicy(
CookiePolicy.BROWSER_COMPATIBILITY);
int a = httpClient.executeMethod(postMethod);
// 获得登陆后的 Cookie
Cookie[] cookies = httpClient.getState().getCookies();
StringBuffer tmpcookies = new StringBuffer();
for (Cookie c : cookies) {
tmpcookies.append(c.toString() + ";");
}
System.out.println("cookie:"+ httpClient.getState()+"==》结束");
// 进行登陆后的操作1581,1602,1603,1610,1609,1608,1607,1606,1605,1620,1619,1617,1616,1622,1626,1642,1648,1647,1657
GetMethod getMethod = new GetMethod(dataUrl);
// 每次访问需授权的网址时需带上前面的 cookie 作为通行证
getMethod.setRequestHeader("cookie", tmpcookies.toString());
// 你还可以通过 PostMethod/GetMethod 设置更多的请求后数据
// 例如,referer 从哪里来的,UA 像搜索引擎都会表名自己是谁,无良搜索引擎除外
postMethod.setRequestHeader("Referer", "http://192.168.1.127:8080/propertyadmin/index.do");
postMethod.setRequestHeader("User-Agent", "www Spot");
httpClient.executeMethod(getMethod);
// 打印出返回数据,检验一下是否成功
String text = getMethod.getResponseBodyAsString();
System.out.println(text);
} catch (Exception e) {
e.printStackTrace();
}
}
cookie的执行结果:
System.out.println("cookie:"+ httpClient.getState()+"==》结束");
==》cookie:[ | | ]==》结束
但是浏览器上的结果是:![图片说明](https://img-ask.csdn.net/upload/201706/21/1498027781_348950.png)