Failed to convert property value of type [java.lang.String] to required type [int]_failed to convert property value of type 'java.lan-优快云博客

本文链接：https://blog.youkuaiyun.com/NOKIA_LC/article/details/52084172

本文解决了一个常见的Spring配置问题，即由于未正确导入属性文件导致的数据源初始化失败。文章详细介绍了如何在Spring配置文件中引入外部属性文件，并给出了具体的配置代码。

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org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [applicationContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type [java.lang.String] to required type [int] for property 'initialPoolSize'; nested exception is java.lang.NumberFormatException: For input string: "${jdbc.initPoolSize}"

Caused by: org.springframework.beans.TypeMismatchException: Failed to convert property value of type [java.lang.String] to required type [int] for property 'initialPoolSize'; nested exception is java.lang.NumberFormatException: For input string: "${jdbc.initPoolSize}"

Caused by: java.lang.NumberFormatException: For input string: "${jdbc.initPoolSize}"

Spring开发时遇到这个错误，先以为是类型转换出了问题，可是检查不出毛病，最后才发现并不是类型转换的问题，而是我资源配置文件没有导入得到Spring配置中

先在Spring配置文件中添加