springCloud和springboot升级

一、引言

      springCloud和springBoot较低版本有时候会有网络漏洞，所以随着springCloud和springBoot的升级会修复这些漏洞。那么有时候就遇到在升级过程中，遇到不兼容的问题。需要总结下来记录一下。

二、springBoot和springCloud的使用

1、springBoot的引用

我们可以在springboot父工程的pom中引入springboot，这里表示使用springboot的2.6.2版本。博主之前使用的是2.5.2的版本。2.6.2为已经升级后的版本。

    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>2.6.2version>
    parent>

2、引入了父依赖，我们就可以在任意子module中引入springboot

	   <dependency>
			<groupId>org.springframework.bootgroupId>
			<artifactId>spring-boot-starterartifactId>
		dependency>
 
		<dependency>
			<groupId>org.springframework.bootgroupId>
			<artifactId>spring-boot-starter-webfluxartifactId>
		dependency>
 
		<dependency>
			<groupId>org.springframework.bootgroupId>
			<artifactId>spring-boot-starter-webartifactId>
		dependency>

3、springCloud的引用，这里使用2021.0.1 也是升级后的版本，之前是使用2020.0.3

 <spring-cloud.version>2021.0.1spring-cloud.version>

常使用到的springCloud依赖

（1）、网关

       <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-gatewayartifactId>
          
        dependency>

（2）其他程序

        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-bootstrapartifactId>
        dependency>

 （3）feign

 <dependency>
			<groupId>org.springframework.cloudgroupId>
			<artifactId>spring-cloud-starter-openfeignartifactId>
		dependency>

（4）eureka

        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-netflix-eureka-clientartifactId>
            <exclusions>
                <exclusion>
                    <groupId>com.thoughtworks.xstreamgroupId>
                    <artifactId>xstreamartifactId>
                exclusion>
            exclusions>
        dependency>

对于springboot 2.6.2和springCloud 2021.0.1版本可以兼容其他组件的版本，可参考

    <properties>
        <maven.compiler.source>8maven.compiler.source>
        <maven.compiler.target>8maven.compiler.target>
        <base.version>1.0-SNAPSHOTbase.version>
        <java.version>1.8java.version>
        <spring-cloud.version>2021.0.1spring-cloud.version>
        <spring-boot.version>2.6.2spring-boot.version>
        <mysql.version>8.0.17mysql.version>
        <druid.version>1.1.13druid.version>
        <mybatisplus.version>3.4.3.4mybatisplus.version>
        <mybatis-spring.version>2.2.0mybatis-spring.version>
        <apollo.version>1.8.0apollo.version>
        <dameng.version>7.6.0.142dameng.version>
        <fastjson.version>1.2.83fastjson.version>
        <swagger2.version>2.9.2swagger2.version>
        <hutool.version>5.7.7hutool.version>
        <poi.version>4.1.2poi.version>
        <commons-lang3.version>3.8.1commons-lang3.version>
        <xstream.version>1.4.18xstream.version>
        <log4j-to-slf4j.version>2.15.0log4j-to-slf4j.version>
        <java-jwt.version>3.8.2java-jwt.version>
        <zxing.version>3.3.0zxing.version>
        <barcode4j.version>2.1barcode4j.version>
        <bcprov-jdk15to18.version>1.66bcprov-jdk15to18.version>
        <rocketmq.version>4.7.1rocketmq.version>
        <mq-http-sdk.version>1.0.3.2mq-http-sdk.version>
        <aliyun-sdk-oss.version>3.13.2aliyun-sdk-oss.version>
        <cos_api.version>5.6.89cos_api.version>
        <sharding-sphere.version>4.0.0-RC2sharding-sphere.version>
		<shardingsphere.version>5.0.0-betashardingsphere.version>
    properties>

三、升级springboot和springCloud注意的问题

如果之前代码存在循环依赖，需要在yml中配置忽略掉依赖，要不然项目启动会报错，还有就是mvn打包无法打包。

报错信息：

Description:

The dependencies of some of the beans in the application context form a cycle:

提示处理方法：

Action:

Relying upon circular references is discouraged and they are prohibited by default. Update your application to remove the dependency cycle between beans. As a last resort, it may be possible to break the cycle automatically by setting spring.main.allow-circular-references to true.
 

在yml配置上可解决

spring:
#spring boot 升级到2.6.x后需要增加的配置
  main:
    allow-circular-references: true
  mvc:
    pathmatch:
      matching-strategy: ANT_PATH_MATCHER