Unsatisfied dependency expressed through field 测试类

Unsatisfied dependency expressed through field是指在测试类中，通过字段表达的依赖关系无法满足。这可能是由于测试类中的依赖注入不正确导致的。

通常情况下，这种错误会出现在测试类中使用了@SpringBootTest注解但没有正确指定classes属性的情况下。

另外，可能的原因之一是包扫描路径不正确。如果包扫描路径错误，Spring容器将无法找到所需的bean，从而导致依赖注入失败。一旦修正了包扫描路径，就可以将bean成功放入Spring容器，并在测试类中进行注入。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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