Question

我正在点击一个网址登录

public void hittingurl(){
String url = "http://test/login.jsp?username=hello&password=12345";

        URL obj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();

        // optional default is GET
        con.setRequestMethod("GET");

        int responseCode = con.getResponseCode();
        System.out.println("\nSending 'GET' request to URL : " + url);
        System.out.println("Response Code : " + responseCode);

        BufferedReader in = new BufferedReader(
                new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        //print result
        System.out.println(response.toString());
}

成功点击后登录网址当我点击另一个网址时

http://test/afterLogin.jsp

由于afterLogin.jsp无法获取，因此无法输出用户名和密码的会话值我还在login.jsp页面中的会话中设置了一个变量

session.setAttribute("someparamValue", "value");

有没有办法使用核心java在会话中点击第二个网址第一个网址？这样afterLogin.jsp能够获得我拥有的每个会话值在login.jsp
中

Answer 1

感谢BalusC指出CookieHandler。我知道使用scriptlet是一种罪过。但是，我将把它们用于这个演示代码。在发件人页面的页面指令中，我关闭了自动会话创建。这样我们就可以使用单个浏览器进行测试。请将这三个JSP放入ROOT的根文件夹（如果您使用的是Tomcat）Web应用程序。否则，您必须手动将上下文路径插入URL。

<%@page import="java.io.*,java.net.*" session="false"%>
<%!
public void jspInit() {
    CookieHandler.setDefault(new CookieManager(null, CookiePolicy.ACCEPT_ALL));
}
public void hittingURL(JspWriter out, String url) throws Exception{
    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();
    con.setRequestMethod("GET");
    int responseCode = con.getResponseCode();
    out.print("Sending 'GET' request to URL : " + url + "<br/>");
    out.print("Response Code : " + responseCode + "<br/>");
    BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
    String inputLine;
    StringBuffer responseBuffer = new StringBuffer();
    while ((inputLine = in.readLine()) != null) {
        responseBuffer.append(inputLine);
    }
    in.close();
    out.print(responseBuffer.toString() + "<br/>");
    return; 
}
%>
<%  
    hittingURL(out, "http://localhost:8080/target1.jsp");
    hittingURL(out, "http://localhost:8080/target2.jsp");
%>

targer1.jsp

<%
    session.setAttribute("someKey", "myValue");
%>
Hi from target1.jsp
someKey = ${someKey}
The session id is ${pageContext.session.id}

target2.jsp

Hi from target2.jsp
someKey = ${someKey}
The session id is ${pageContext.session.id}

如何使用第一个URL的会话点击第二个URL？

1 个答案: