我试图用Spring Cloud Gateway做一个样本，用于JWT认证和URL路由的目的。
当我作为JAVA应用程序或使用嵌入式Tomcat容器运行时，一切都运行得很好，但当我将其作为一个War部署到Tomcat服务器时，就会出现以下依赖性注入错误。
APPLICATION FAILED TO START
Description:
Parameter 4 of method routeDefinitionRouteLocator in org.springframework.cloud.gateway.config.GatewayAutoConfiguration required a bean of type 'org.springframework.core.convert.ConversionService' that could not be found.
The injection point has the following annotations: - @org.springframework.beans.factory.annotation.Qualifier(value=webFluxConversionService)
Action:
Consider defining a bean of type 'org.springframework.core.convert.ConversionService' in your configuration.
我试着添加了与spring web flux相关的jars，但错误并没有消失。
POM.XML
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.gateway</groupId>
<artifactId>gateway</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>gateway</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR2</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-tomcat -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-webflux -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-web-reactive -->
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<finalName>mxgateway</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin> <artifactId>maven-war-plugin</artifactId>
<configuration> <outputDirectory>E:/apache-tomcat-9.0.22/webapps</outputDirectory>
</configuration> </plugin>
</plugins>
</build>
</project>
gateway 配置
package com.gateway.gateway;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.cloud.gateway.route.RouteLocator;
import org.springframework.cloud.gateway.route.builder.RouteLocatorBuilder;
import org.springframework.cloud.gateway.route.builder.RouteLocatorBuilder.Builder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import com.gateway.gateway.bean.ProgramRouteDetail;
import com.gateway.gateway.security.CustomGatewayFilter;
@SpringBootApplication
@Configuration
public class GatewayApplication extends SpringBootServletInitializer{
@Autowired
CustomGatewayFilter customGatewayFilter;
public static void main(String[] args) {
SpringApplication.run(GatewayApplication.class, args);
}
public List<ProgramRouteDetail> filterRequest(){
List<ProgramRouteDetail> programRouteDetails = new ArrayList<ProgramRouteDetail>();
for(int i =0;i<=2;i++){
ProgramRouteDetail detail = new ProgramRouteDetail();
detail.setDestUri("http://localhost:9090");
detail.setProgramId("users");
detail.setPath("/user/**");
programRouteDetails.add(detail);
}
return programRouteDetails;
}
@Override
protected SpringApplicationBuilder configure(
SpringApplicationBuilder builder) {
return builder.sources(GatewayApplication.class);
}
public RouteLocator constructRouteAndFilters(RouteLocatorBuilder builder ){
Builder routes = builder.routes();
List<ProgramRouteDetail> programRouteDetails = filterRequest();
for(ProgramRouteDetail programDetail : programRouteDetails){
routes.route(p -> p.path(programDetail.getPath()).filters(f->f.filter(customGatewayFilter)).uri(programDetail.getDestUri()));
}
return routes.build();
}
@Bean
public RouteLocator myRoutes(RouteLocatorBuilder builder) {
return constructRouteAndFilters(builder);
}
}
StackOverflow: Spring Cloud Gateway not starting when deployed as WAR showing webFluxConversionService error - Stack Overflow