ScheduledUpdateCertificatesVerifier的getVerifier()空指针

Question

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'AOrderController': Unsatisfied dependency expressed through field 'wxPayService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'wxPayServiceImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'wxPayClient' defined in class path resource [com/ruoyi/order/config/WxPayConfig.class]: Unsatisfied dependency expressed through method 'getWxPayClient' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'getVerifier' defined in class path resource [com/ruoyi/order/config/WxPayConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.wechat.pay.contrib.apache.httpclient.auth.ScheduledUpdateCertificatesVerifier]: Factory method 'getVerifier' threw exception; nested exception is java.lang.NullPointerException
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:713)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:693)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:408)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1431)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:336)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:334)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:209)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:591)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:780)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:453)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:343)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1370)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1359)
    at com.ruoyi.RuoYiApplication.main(RuoYiApplication.java:18)
    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.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'wxPayServiceImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'wxPayClient' defined in class path resource [com/ruoyi/order/config/WxPayConfig.class]: Unsatisfied dependency expressed through method 'getWxPayClient' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'getVerifier' defined in class path resource [com/ruoyi/order/config/WxPayConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.wechat.pay.contrib.apache.httpclient.auth.ScheduledUpdateCertificatesVerifier]: Factory method 'getVerifier' threw exception; nested exception is java.lang.NullPointerException
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:332)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1431)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:336)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:334)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:209)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1391)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:710)
    ... 25 common frames omitted
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'wxPayClient' defined in class path resource [com/ruoyi/order/config/WxPayConfig.class]: Unsatisfied dependency expressed through method 'getWxPayClient' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'getVerifier' defined in class path resource [com/ruoyi/order/config/WxPayConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.wechat.pay.contrib.apache.httpclient.auth.ScheduledUpdateCertificatesVerifier]: Factory method 'getVerifier' threw exception; nested exception is java.lang.NullPointerException
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:794)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:532)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:336)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:334)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:214)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeanByName(AbstractAutowireCapableBeanFactory.java:479)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:554)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:524)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:677)
    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:228)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessProperties(CommonAnnotationBeanPostProcessor.java:329)
    ... 36 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'getVerifier' defined in class path resource [com/ruoyi/order/config/WxPayConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.wechat.pay.contrib.apache.httpclient.auth.ScheduledUpdateCertificatesVerifier]: Factory method 'getVerifier' threw exception; nested exception is java.lang.NullPointerException
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:646)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:477)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:336)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:334)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:209)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1391)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:904)
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:781)
    ... 52 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.wechat.pay.contrib.apache.httpclient.auth.ScheduledUpdateCertificatesVerifier]: Factory method 'getVerifier' threw exception; nested exception is java.lang.NullPointerException
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:641)
    ... 66 common frames omitted
Caused by: java.lang.NullPointerException: null
    at java.io.FileInputStream.<init>(FileInputStream.java:130)
    at java.io.FileInputStream.<init>(FileInputStream.java:93)
    at com.ruoyi.order.config.WxPayConfig.getPrivateKey(WxPayConfig.java:62)
    at com.ruoyi.order.config.WxPayConfig.getVerifier(WxPayConfig.java:79)
    at com.ruoyi.order.config.WxPayConfig$$EnhancerBySpringCGLIB$$ad447a04.CGLIB$getVerifier$7(<generated>)
    at com.ruoyi.order.config.WxPayConfig$$EnhancerBySpringCGLIB$$ad447a04$$FastClassBySpringCGLIB$$e25a078e.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331)
    at com.ruoyi.order.config.WxPayConfig$$EnhancerBySpringCGLIB$$ad447a04.getVerifier(<generated>)
    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.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
    ... 67 common frames omitted

若依项目添加完微信v3支付的相关代码后，启动项目提示getVerifier方法是空值，结合上面的错误应该是引用冲突，但是不知道到底是哪里的冲突？

Answer 1

让阿豪来帮你解答，本回答参考chatgpt3.5编写提供，如果还有疑问可以评论或留言

这个异常是因为在创建名为'AOrderController'的bean时，发现其依赖的字段'wxPayService'无法满足。导致这个问题的根本原因可能是'wxPayService'的实例无法成功注入。在创建'wxPayServiceImpl' bean时，发现注入的资源依赖失败，造成了这个异常链的继续。最终在创建'wxPayClient' bean时，发现在调用工厂方法'getVerifier'时出现了空指针异常。 具体的代码案例可能类似于以下情况：

@Autowired
private WxPayService wxPayService;
public class AOrderController {
  // controller logic
}

@Service
public class WxPayServiceImpl implements WxPayService {
  @Autowired
  private WxPayClient wxPayClient;
  // service logic
}
@Bean
public WxPayClient getWxPayClient() {
  // create and configure WxPayClient
  return new WxPayClient();
}

@Configuration
public class WxPayConfig {
  @Bean
  public ScheduledUpdateCertificatesVerifier getVerifier() {
    // create and configure ScheduledUpdateCertificatesVerifier
    return new ScheduledUpdateCertificatesVerifier();
  }
}

在这个示例中，可能出现了'wxPayService'无法成功注入到'AOrderController'，或者'wxPayClient'无法成功注入到'WxPayServiceImpl'，最终导致在'getVerifier'工厂方法中出现空指针异常。 解决这个问题的方法包括检查各个bean的依赖关系是否正确配置，确保各个依赖资源都能够成功注入，以及排查空指针异常的原因并修复。