我正在使用keycloak测试Web应用程序春季启动的安全性，添加了所有必需的依赖项，但是在对应用程序进行扩展时遇到了问题。
我使用： 弹簧靴2.2.0.M3 Java 11
我包括： keycloak-spring-boot-starter和keycloak-adapter-bom
这是我的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>2.2.0.M3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>gn.traore</groupId>
<artifactId>demo-spring-boot-keycloak</artifactId>
<version>1.0</version>
<name>demo-spring-boot-keycloak</name>
<description>Demo project for Spring Boot with Keycloak</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.keycloak/keycloak-spring-boot-starter -->
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-spring-boot-starter</artifactId>
<version>6.0.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.keycloak.bom/keycloak-adapter-bom -->
<dependency>
<groupId>org.keycloak.bom</groupId>
<artifactId>keycloak-adapter-bom</artifactId>
<version>6.0.1</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
<exclusion>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</pluginRepository>
</pluginRepositories>
</project>
向我显示此错误消息：
org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is java.lang.IllegalArgumentException: Dupl
icate context initialization parameter [keycloak.config.resolver]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:157)
~[spring-boot-2.2.0.M3.jar:2.2.0.M3]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) ~[spring-context-5.2.0.M2.
jar:5.2.0.M2]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~
[spring-boot-2.2.0.M3.jar:2.2.0.M3]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:782) ~[spring-boot-2.2.0.M3.jar:2.2.0.M3]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:404) ~[spring-boot-2.2.0.M3.jar:2.2.0.M3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:319) ~[spring-boot-2.2.0.M3.jar:2.2.0.M3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1275) ~[spring-boot-2.2.0.M3.jar:2.2.0.M3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1263) ~[spring-boot-2.2.0.M3.jar:2.2.0.M3]
at gn.traore.DemoSpringBootKeycloakApplication.main(DemoSpringBootKeycloakApplication.java:10) ~[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:566) ~[na:na]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.2.0.M3.jar:2.2.0.M3]
Caused by: java.lang.IllegalArgumentException: Duplicate context initialization parameter [keycloak.config.resolver]
at org.apache.catalina.core.StandardContext.addParameter(StandardContext.java:3111) ~[tomcat-embed-core-9.0.19.jar:9.0.19]
at org.keycloak.adapters.springboot.KeycloakBaseSpringBootConfiguration$KeycloakBaseTomcatContextCustomizer.customize(KeycloakBaseSpringB
ootConfiguration.java:271) ~[keycloak-spring-boot-adapter-core-6.0.1.jar:6.0.1]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.configureContext(TomcatServletWebServerFactory.java:377) ~[
spring-boot-2.2.0.M3.jar:2.2.0.M3]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.prepareContext(TomcatServletWebServerFactory.java:234) ~[sp
ring-boot-2.2.0.M3.jar:2.2.0.M3]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:183) ~[spri
ng-boot-2.2.0.M3.jar:2.2.0.M3]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.jav
a:181) ~[spring-boot-2.2.0.M3.jar:2.2.0.M3]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:154)
~[spring-boot-2.2.0.M3.jar:2.2.0.M3]
... 13 common frames omitted
答案 0 :(得分：0)
您可以通过添加
来排除KeycloakAutoConfiguration类
@SpringBootApplication( exclude = { KeycloakAutoConfiguration.class } )
对主要应用程序类的注释。
答案 1 :(得分：0)
spring-boot中有一个错误，即两次调用Web服务器定制程序。因为该错误keycloak初始化了两次。在spring-boot 2.2.0.M5中解决了。因此，升级spring-boot将解决此问题。
请参见https://github.com/spring-projects/spring-boot/issues/17264