Bug汇总—Day02

一、项目运行出错

1、问题：运行SpringBoot项目重新导入Maven报错

org.springframework.boot:spring-boot-dependencies:pom:2.2.2.RELEASE failed to transfer from https://repo.maven.apache.org/maven2 during a previous attempt. This failure was cached in the local repository and resolution is not reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.springframework.boot:spring-boot-dependencies:pom:2.2.2.RELEASE from/to central (https://repo.maven.apache.org/maven2): Read timed out
Try to run Maven import with -U flag (force update snapshots)

报错原因：

• 在IDEA中的Maven配置出错

解决方案：将setting -> Maven配置本地的Maven，重新install

2、问题：在重新install项目中的Maven后，报错

报错原因：未删除test文件夹

解决方案：将Maven删除test文件夹

3、报错原因：项目运行出现和数据库MySQL连接错误

java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129) ~[mysql-connector-java-8.0.18.jar:8.0.18]
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) ~[mysql-connector-java-8.0.18.jar:8.0.18]
	at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) ~[mysql-connector-java-8.0.18.jar:8.0.18]
	at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836) ~[mysql-connector-java-8.0.18.jar:8.0.18]
	at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456) ~[mysql-connector-java-8.0.18.jar:8.0.18]
	at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246) ~[mysql-connector-java-8.0.18.jar:8.0.18]
	at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) ~[mysql-connector-java-8.0.18.jar:8.0.18]
	at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-3.4.1.jar:na]
    ...........

报错原因：在application.yml文件中配置的MySQL用户名密码错误

解决办法：修改application.yml文件中的相关MySQL用户名密码配置

的相关MySQL用户名密码配置