NoSuchMethodError: org.springframework.boot.web.servlet.error.ErrorController.getErrorPath的解决方法
在使用zuul的过程中,启动应用程序,调用接口时报错:
java.lang.NoSuchMethodError: org.springframework.boot.web.servlet.error.ErrorController.getErrorPath()Ljava/lang/String;
at org.springframework.cloud.netflix.zuul.web.ZuulHandlerMapping.lookupHandler(ZuulHandlerMapping.java:87) ~[spring-cloud-netflix-zuul-2.2.7.RELEASE.jar:2.2.7.RELEASE]
at org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.getHandlerInternal(AbstractUrlHandlerMapping.java:152) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:498) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1261) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1043) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.10.jar:5.3.10]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.53.jar:4.0.FR]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.10.jar:5.3.10]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.53.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
找不到ErrorController中的getErrorPath()方法
由于作者使用的是最新的 spring-boot 2.5.5 版本,从 ErrorController 中删除了 getErrorPath() API,但spring-cloud-starter-netflix-zuul 2.2.7.RELEASE 仍然调用此 API 并导致此错误。
解决方法
方法一: 使用低版本spring boot兼容spring-cloud-starter-netflix-zuul
使用spring boot 2.4.8可以兼容spring-cloud-starter-netflix-zuul
补充:
spring-cloud 和 netflix-zuul 将在以下版本中正常工作:
spring-boot-starter-parent: 2.1.3.RELEASE
java.version: 1.8
spring-cloud.version: Greenwich.RELEASE
spring-cloud-starter-netflix-zuul: 2.1.0.RELEASE
spring-cloud-starter-netflix-eureka-client: 2.1.0.RELEASE
jackson-dataformat-xml: 2.9.9
spring-cloud-starter-netflix-eureka-server: 2.1.0.RELEASE
方法二: 创建BeanPostProcessor拦截 lookupHandler 方法的调用
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.boot.web.servlet.error.ErrorController;
import org.springframework.cglib.proxy.Callback;
import org.springframework.cglib.proxy.CallbackFilter;
import org.springframework.cglib.proxy.Enhancer;
import org.springframework.cglib.proxy.MethodInterceptor;
import org.springframework.cglib.proxy.MethodProxy;
import org.springframework.cglib.proxy.NoOp;
import org.springframework.cloud.netflix.zuul.filters.RouteLocator;
import org.springframework.cloud.netflix.zuul.web.ZuulController;
import org.springframework.cloud.netflix.zuul.web.ZuulHandlerMapping;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* Fix for Zuul configuration with Spring Boot 2.5.x + Zuul - "NoSuchMethodError: ErrorController.getErrorPath()":
*/
@Configuration
public class ZuulConfiguration {
/**
* The path returned by ErrorController.getErrorPath() with Spring Boot < 2.5
* (and no longer available on Spring Boot >= 2.5).
*/
private static final String ERROR_PATH = "/error";
private static final String METHOD = "lookupHandler";
/**
* Constructs a new bean post-processor for Zuul.
*
* @param routeLocator the route locator.
* @param zuulController the Zuul controller.
* @param errorController the error controller.
* @return the new bean post-processor.
*/
@Bean
public ZuulPostProcessor zuulPostProcessor(@Autowired RouteLocator routeLocator,
@Autowired ZuulController zuulController,
@Autowired(required = false) ErrorController errorController) {
return new ZuulPostProcessor(routeLocator, zuulController, errorController);
}
private enum LookupHandlerCallbackFilter implements CallbackFilter {
INSTANCE;
@Override
public int accept(Method method) {
if (METHOD.equals(method.getName())) {
return 0;
}
return 1;
}
}
private enum LookupHandlerMethodInterceptor implements MethodInterceptor {
INSTANCE;
@Override
public Object intercept(Object target, Method method, Object[] args, MethodProxy methodProxy) throws Throwable {
if (ERROR_PATH.equals(args[0])) {
// by entering this branch we avoid the ZuulHandlerMapping.lookupHandler method to trigger the
// NoSuchMethodError
return null;
}
return methodProxy.invokeSuper(target, args);
}
}
private static final class ZuulPostProcessor implements BeanPostProcessor {
private final RouteLocator routeLocator;
private final ZuulController zuulController;
private final boolean hasErrorController;
ZuulPostProcessor(RouteLocator routeLocator, ZuulController zuulController, ErrorController errorController) {
this.routeLocator = routeLocator;
this.zuulController = zuulController;
this.hasErrorController = (errorController != null);
}
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
if (hasErrorController && (bean instanceof ZuulHandlerMapping)) {
Enhancer enhancer = new Enhancer();
enhancer.setSuperclass(ZuulHandlerMapping.class);
enhancer.setCallbackFilter(LookupHandlerCallbackFilter.INSTANCE); // only for lookupHandler
enhancer.setCallbacks(new Callback[] {LookupHandlerMethodInterceptor.INSTANCE, NoOp.INSTANCE});
Constructor<?> ctor = ZuulHandlerMapping.class.getConstructors()[0];
return enhancer.create(ctor.getParameterTypes(), new Object[] {routeLocator, zuulController});
}
return bean;
}
}
}
测试代码:
@RestController
@RequestMapping("/set")
public class TestController {
@RequestMapping("/test")
public String test(){
return "hello world!";
}
}
运行成功,不报错:
原文地址:https://stackoverflow.com/questions/68100671/nosuchmethoderror-org-springframework-boot-web-servlet-error-errorcontroller-ge
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