小编ONG*_*G _的帖子

我在创建 spring Maven Rest Web 服务时遇到以下错误。当我使用 postman 在 ocbc 的 api 上测试 post 请求时，它工作正常。但是，当我尝试对花旗进行发布请求时，出现以下错误：Servlet.service() for servlet [dispatcherServlet] in context with path [] throwed exception [请求处理失败；嵌套异常是 java.lang.NullPointerException] 其根本原因。在我的邮递员中，它显示错误：“内部服务器错误”，状态：“500”

错误：

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause

java.lang.NullPointerException: null
        at com.example.service.impl.PaymentServiceImpl.addCitiPayment(PaymentServiceImpl.java:22) ~[classes/:na]
        at com.example.controller.PaymentController.addCitiPayment(PaymentController.java:25) ~[classes/:na]
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
        at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
        at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:197) ~[spring-web-5.3.4.jar:5.3.4]
        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:141) ~[spring-web-5.3.4.jar:5.3.4]
        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.3.4.jar:5.3.4]
        at …