I am Chinese, please forgive me if my English is not good

bug demo project

https://github.com/social-uni/spring-cache-bug

run TestcacheApplication

input url in browser

https://localpc.qingchiapp.com:8097/app/hello?adCode=100000

modify pom file

get success

//pom

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.9</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>


    <!--<dependencyManagement>
        <dependencies>
            &lt;!&ndash; https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-dependencies &ndash;&gt;
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>2.4.9</version>
                &lt;!&ndash; 所有依赖包的版本控制统一 &ndash;&gt;
                <type>pom</type>
                &lt;!&ndash;    仅支持type=pom，仅用来pom间互相引用，减少父pom体积&ndash;&gt;
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>-->

get error

    <!--<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.9</version>
        <relativePath/> &lt;!&ndash; lookup parent from repository &ndash;&gt;
    </parent>-->

    <dependencyManagement>
        <dependencies>
            <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-dependencies -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>2.4.9</version>
                <!-- 所有依赖包的版本控制统一 -->
                <type>pom</type>
                <!--    仅支持type=pom，仅用来pom间互相引用，减少父pom体积-->
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

Comment From: snicoll

@social-uni thanks for the sample but downloading the code requires to register on this site. Can you please attach a zip with the project to this issue?

Comment From: alamhubb

@social-uni感谢您提供示例，但下载代码需要在此站点上注册。您能否在此问题上附上项目的 zip 文件？

hi, this is zip

spring-cache-bug-master.zip

Comment From: alamhubb

submit project on github

https://github.com/social-uni/spring-cache-bug

Comment From: wilkinsona

Thanks for the sample. The exception message hints at the cause of the problem:

Null key returned for cache operation (maybe you are using named params on classes without debug info?)

When you switch to importing spring-boot-dependencies, your code is no longer compiled with -parameters as you no longer inherit Spring Boot's customization of the compiler plugin's configuration.

Enabling -parameters should be listed in the documentation but it is not. We can use this issue to add it.