Cannot resolve org.springframework.security:spring-security-config:5.7.8

这个错误通常是由于你的项目的Maven或Gradle依赖项配置文件中缺少了Spring Security Config库的依赖项引起的。你需要确认你的pom.xml文件或build.gradle文件中是否添加了以下依赖项：

对于Maven：

<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-config</artifactId>
    <version>5.7.8</version>
</dependency>

对于Gradle：

dependencies {
    implementation 'org.springframework.security:spring-security-config:5.7.8'
}

如果你已经添加了这个依赖项，那么可能是因为你的Maven或Gradle配置文件无法访问Maven中央仓库。可以尝试清除本地Maven仓库缓存并重新构建项目。如果问题仍然存在，你可以尝试手动下载并安装Spring Security Config库，然后将其添加到你的依赖项配置文件中。

相关问题

Cannot resolve org.springframework.security:spring-security-config:5.3.2.RELEASE

根据引用\[1\]，问题中提到的错误是"Cannot resolve org.springframework.security:spring-security-config:5.3.2.RELEASE"。这个错误通常表示在项目的pom文件中找不到所需的Spring Security依赖。根据引用\[1\]中的pom文件片段，可以看到项目中已经添加了spring-boot-starter-security依赖，但是可能缺少了spring-security-config依赖。

解决这个问题的方法是在项目的pom文件中添加spring-security-config依赖。可以在<dependencies>标签中添加以下代码：

<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-config</artifactId>
    <version>5.3.2.RELEASE</version>
</dependency>

这样就可以解决"Cannot resolve org.springframework.security:spring-security-config:5.3.2.RELEASE"的错误了。
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Cannot resolve org.springframework:spring-jdbc:5.0.0.RELEASE

This error usually occurs when the required dependency for Spring JDBC is not present in the project. To resolve this error, you can follow the steps below:

1. Check if you have added the following dependency to your pom.xml file:

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>5.0.0.RELEASE</version>
</dependency>

2. If the dependency is already added, try updating the version to the latest stable release by changing the version number to the latest stable release in the above code block.

3. If you are using an IDE like Eclipse or Intellij, try updating the Maven project by right-clicking on the project and selecting Maven > Update Project.

4. If the issue still persists, try deleting the local Maven repository located in your user directory (e.g. C:\Users\username\.m2\repository) and then re-building the project.

If none of the above solutions work, you can try searching for the Spring JDBC dependency in the Maven Central Repository and manually downloading the jar file and adding it to your project's classpath.