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原创 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server
1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server
2024-03-18 16:05:24
243
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原创 Spring boot 解决 Plugin ‘org.springframework.boot:spring-boot-maven-plugin:‘ not found
Spring boot 解决 Plugin ‘org.springframework.boot:spring-boot-maven-plugin:‘ not found
2024-03-10 10:49:34
241
1
原创 Error starting ApplicationContext. To display the auto-configuration report re-run your application
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2024-03-10 10:47:31
425
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原创 com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
2024-03-10 10:42:43
218
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原创 Cannot reduce the visibility of the inherited method from UserRegisterService
Cannot reduce the visibility of the inherited method from UserRegisterService
2023-12-21 09:11:09
388
原创 Multiple markers at this line-Cannot reduce the visibility of the inherited method from UserRegiste
Multiple markers at this line-Cannot reduce the visibility of the inherited method from UserRegisterService- Exception Exception is not compatible with throws clause in UserRegisterService.checkEmail(String)
2023-12-21 09:08:28
441
原创 RESTClient的使用教程
点击Body,在下拉页面选择String body。建立一个GET或POST的请求。点击下面的Body可以查看结果。点击Generate。
2023-12-20 12:57:58
609
原创 Error creating bean with name ‘itemServiceImpl‘: Injection of autowired dependencies failed;
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListenerorg.springframework.beans.factory.BeanCreationException: Error creating bean with name 'itemServiceImpl': Injection of autow
2023-12-18 19:00:00
582
原创 实现一个名为“Rectangle”的表示矩形的类,该类包含两个实例属性 width和height,都是可读写的 property,分别表示矩形的宽和高。
实现一个名为“Rectangle”的表示矩形的类,该类包含两个实例属性 width和height,都是可读写的 property,分别表示矩形的宽和高。同时,还有一个名为area()的方法,是一个只读的 property,该方法返回矩形的面积。继承上一题中的 Rectangle 类来实现一个名为 Square 的正方形类,使得可以用Square(边长)的方式实例化该类。
2023-12-17 14:50:04
1167
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原创 定义一个字典类 DictClass,完成下面的功能
(1)定义一个方法 del_dict(key),用于删除某个键;(2)定义一个方法 get_dict(key),用于判断某个键是否在字典里,如果在字典里则返回键对应的值,如果不在字典里,则返回“not found”;(3)定义一个方法 get_key(),返回键组成的列表
2023-12-17 14:32:56
1057
1
原创 eclipse端口被占用
严重: Failed to initialize end point associated with ProtocolHandler ["http-bio-8081"]java.net.BindException: Address already in use: JVM_Bind :8081
2023-12-14 11:19:56
1388
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