Cannot instantiate the type
Cannot instantiate the type 在service中无法实例化dao时，一般要么是构造函数时写的不是public而是private，另一个可能是自己建立类（class）的时候自动构造的函数是可以看出图片中用abstract修饰的类 总结：当出现这个问题时就检查类的构造函数是否是private，或者这个类是否是抽象类 就可以了。
相关文章
- 1. Cannot instantiate the type HttpClient问题
- 2. java.lang.RuntimeException: Cannot instantiate object of type tk.mybatis.mapper.generator.MapperPlug
- 3. Cannot instantiate object of type org.mybatis.generator.plugins.ToString 解决办法
- 4. MyBatis Generator报错：Cannot instantiate object of type
- 5. 问题：Cannot instantiate object of type null at org.mybatis.generator.internal.ObjectFactory...
- 6. Cannot instantiate class: org.jnp.interfaces.NamingContextFactory
- 7. Cannot instantiate interface org.springframework.context.ApplicationListener
- 8. The type org.springframework.context.ConfigurableApplicationContext cannot be resolved.
- 9. STS中The type javax.servlet.ServletContext cannot
- 10. The type javax.servlet.http.HttpServletRequest cannot be resolved.
- 更多相关文章...
- • ASP Type 属性 - ASP 教程
- • ASP Type 属性 - ASP 教程
- • PHP Ajax 跨域问题最佳解决方案
- • 为了进字节跳动，我精选了29道Java经典算法题，带详细讲解
相关标签/搜索
每日一句
-
每一个你不满意的现在，都有一个你没有努力的曾经。
欢迎关注本站公众号,获取更多信息
相关文章
- 1. Cannot instantiate the type HttpClient问题
- 2. java.lang.RuntimeException: Cannot instantiate object of type tk.mybatis.mapper.generator.MapperPlug
- 3. Cannot instantiate object of type org.mybatis.generator.plugins.ToString 解决办法
- 4. MyBatis Generator报错：Cannot instantiate object of type
- 5. 问题：Cannot instantiate object of type null at org.mybatis.generator.internal.ObjectFactory...
- 6. Cannot instantiate class: org.jnp.interfaces.NamingContextFactory
- 7. Cannot instantiate interface org.springframework.context.ApplicationListener
- 8. The type org.springframework.context.ConfigurableApplicationContext cannot be resolved.
- 9. STS中The type javax.servlet.ServletContext cannot
- 10. The type javax.servlet.http.HttpServletRequest cannot be resolved.