這個gateway微服務之前啟動沒題,改了一下父依賴就啟動不了了。
之前的父依賴是springboot-parent,後來我想把這個微服務改在我項目的父依賴下,就改了一下父依賴。
<parent>
<!--<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.9.RELEASE</version>
<relativePath/>-->
<artifactId>ac-mall-cloud</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
改完就報錯了。
錯誤資訊如下:
Description:
Parameter 0 of method redisRateLimiter in org.springframework.cloud.gateway.config.GatewayRedisAutoConfiguration required a single bean, but 2 were found:
- reactiveStringRedisTemplate: defined by method 'reactiveStringRedisTemplate' in class path resource [org/springframework/boot/autoconfigure/data/redis/RedisReactiveAutoConfiguration.class]
- stringReactiveRedisTemplate: defined by method 'stringReactiveRedisTemplate' in class path resource [org/springframework/cloud/gateway/config/GatewayRedisAutoConfiguration.class]
Action:
Consider marking one of the beans as @Primary, updating the consumer to accept multiple beans, or using @Qualifier to identify the bean that should be consumed
大緻意思就是在org.springframework.cloud.gateway.config.GatewayRedisAutoConfiguration這個配置類中有兩個redisRateLimiter的執行個體,沖突了。然後我看了下引入的依賴的pom檔案,又看了下其他子服務的pom檔案,發現gateway微服務裡的依賴和父服務裡引入的依賴沖突了,多引了依賴。
下面是gateway微服務中的依賴:
<?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">
<parent>
<!--<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.9.RELEASE</version>
<relativePath/>-->
<artifactId>ac-mall-cloud</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>org.ac</groupId>
<artifactId>gateway-service</artifactId>
<properties>
<spring-cloud.version>Greenwich.SR3</spring-cloud.version>
<alibaba.cloud.version>2.1.0.RELEASE</alibaba.cloud.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${alibaba.cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
......
</project>
下面是父依賴中的pom檔案:
<?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>
<groupId>org.example</groupId>
<artifactId>ac-mall-cloud</artifactId>
<version>1.0-SNAPSHOT</version>
......
<packaging>pom</packaging>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Hoxton.SR8</spring-cloud.version>
<alibaba.cloud.version>2.2.5.RELEASE</alibaba.cloud.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>${boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${alibaba.cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
......
</dependencies>
</dependencyManagement>
......
</project>
從這兩個pom檔案可以看到,在父依賴中已經引入了springcloud依賴和alibabacloud依賴,而且版本和gateway中的版本也不一樣,把gateway微服務pom檔案改成下面這種就可以啟動了。
把所有父依賴pom中已經引入過的依賴注釋掉就可以了。
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<!--<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.9.RELEASE</version>
<relativePath/>-->
<artifactId>ac-mall-cloud</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>org.ac</groupId>
<artifactId>gateway-service</artifactId>
<!--<properties>
<spring-cloud.version>Greenwich.SR3</spring-cloud.version>
<alibaba.cloud.version>2.1.0.RELEASE</alibaba.cloud.version>
</properties>-->
<!--<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${alibaba.cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>-->
......
</project>