Property ‘dataSource‘ is required，别找了，就看这篇吧

1.方案一:
路径错误: 文件路径不应包含 ‘/’

InputStream resourceAsStream = JDBC.class.getClassLoader().getResourceAsStream("druid.properties");

2.方案二:
maven未生成配置,在pom文件中的build标签下添加下面代码

资源文件名一般是resources

<resources>
            <resource>
                <directory>src/main/资源文件名</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                    <include>**/*.tld</include>         
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <excludes>
                    <exclude>**/*.java</exclude>
                </excludes>
            </resource>
        </resources>

这算是IDEA的锅吧，同样的BUG改了三次，我也是吐了！！！