2020-07-27 14:55:51.981 jbportal.loan[ERROR] java.lang.NoSuchFieldError: INSTANCE
at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:984)
at cn.com.jbbis.test.HttpUtil.sendPost(HttpUtil.java:62)
at cn.com.jbbis.test.InvokeClient.query(InvokeClient.java:195)
at cn.com.jbbis.test.InvokeClient.main(InvokeClient.java:224)
at cn.com.jbbis.test.YSInvokeClient.process(YSInvokeClient.java:28)
at cn.com.jbbis.jbportal.Service.invoke(Service.java:46)
at cn.com.jbbis.afx.AppFilterChain.doFilter(AppFilterChain.java:21)
at cn.com.jbbis.jbportal.workflow.WorkflowFilter.doFilter(WorkflowFilter.java:141)
at cn.com.jbbis.afx.AppFilterChain.doFilter(AppFilterChain.java:21)
at cn.com.jbbis.afx.Application.invoke(Application.java:414)
at cn.com.jbbis.jbportal.PortalApp.processRequest(PortalApp.java:253)
at cn.com.jbbis.afx.Application.invoke(Application.java:350)
at cn.com.jbbis.afx.http.HttpShell.invokeApplication(HttpShell.java:592)
at cn.com.jbbis.afx.http.HttpShell.forward(HttpShell.java:740)
at cn.com.jbbis.jbview.ViewShell.forward(ViewShell.java:27)
at cn.com.jbbis.jbview.ViewApp.forward(ViewApp.java:340)
at cn.com.jbbis.jbview.ViewServiceContext.forwardInvocation(ViewServiceContext.java:34)
at cn.com.jbbis.jbview.agent.PortalAgent.localInvoke(PortalAgent.java:53)
at cn.com.jbbis.jbview.agent.PortalAgent.invoke(PortalAgent.java:30)
at cn.com.jbbis.jbview.DataService.invoke(DataService.java:96)
at cn.com.jbbis.afx.AppFilterChain.doFilter(AppFilterChain.java:21)
at cn.com.jbbis.afx.Application.invoke(Application.java:414)
at cn.com.jbbis.jbview.ViewApp.processRequest(ViewApp.java:257)
at cn.com.jbbis.afx.Application.invoke(Application.java:350)
at cn.com.jbbis.afx.http.HttpShell.invokeApplication(HttpShell.java:592)
at cn.com.jbbis.afx.http.HttpShell.doPost(HttpShell.java:551)
at cn.com.jbbis.afx.http.HttpShell.doPost(HttpShell.java:470)
at cn.com.jbbis.afx.http.HttpShell.service(HttpShell.java:389)
https://www.cnblogs.com/tangZH/p/9724807.html
https://blog.csdn.net/u010325193/article/details/80744085
https://blog.csdn.net/qq_40717337/article/details/81183187
检查下，jbportal.loan这个jar包的配置，以及它访问的网站是否能访问，网络的问题，等等。