Jsoup 模拟jenkins登录 HTTP error fetching URL. Status=403, URL=https://jenkins.xxx:10012/jenkins/

err: org.jsoup.HttpStatusException: HTTP error fetching URL. Status=403, URL=https://jenkins.xxx:10012/jenkins/
    at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:760)
    at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:757)
    at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:705)
    at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:295)
    at com.ltzx.sea.login.service.AbstractLoginService.setLoginCookiesSetResponse(AbstractLoginService.java:121)
    at com.ltzx.sea.login.service.AbstractLoginService.handleLogin(AbstractLoginService.java:87)
    at com.ltzx.sea.login.LoginRouterController.login(LoginRouterController.java:48)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:888)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320)
    at org.springframework.security.web.access.

Connection loginCon = Jsoup.connect(loginUrl);
        loginCon.header(LoginHttpConfig.USER_AGENT, LoginHttpConfig.USER_AGENT_VALUE);
        loginCon.ignoreContentType(true).followRedirects(false).method(Connection.Method.POST)
                .data(formData);

关键配置是 

followRedirects(false)

设置为false

这也说明了为什么 异常日志中的url地址是

https://jenkins.xxx:10012/jenkins/

而不是

 https://jenkins.xxx:10012/jenkins/j_acegi_security_check

源码解读