SpringCloud中遇到的问题总结

1.如果数据库URL字符串中不加serverTimezone=GMT%2B8且数据库未设置时区，会报如下错误

    Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value 'Öйú±ê׼ʱ¼ä' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_161]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_161]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_161]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_161]
        at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:59) ~[mysql-connector-java-8.0.11.jar:8.0.11]
        at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:83) ~[mysql-connector-java-8.0.11.jar:8.0.11]
        at com.mysql.cj.util.TimeUtil.getCanonicalTimezone(TimeUtil.java:128) ~[mysql-connector-java-8.0.11.jar:8.0.11]
        at com.mysql.cj.protocol.a.NativeProtocol.configureTimezone(NativeProtocol.java:2201) ~[mysql-connector-java-8.0.11.jar:8.0.11]
        at com.mysql.cj.protocol.a.NativeProtocol.initServerSession(NativeProtocol.java:2225) ~[mysql-connector-java-8.0.11.jar:8.0.11]
        at com.mysql.cj.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:1391) ~[mysql-connector-java-8.0.11.jar:8.0.11]
        at com.mysql.cj.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:895) ~[mysql-connector-java-8.0.11.jar:8.0.11]
        ... 77 common frames omitted

 2.pom.xml中的MySQL驱动版本一定要和安装的MySQL版本对应

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>6.0.6</version>
        </dependency>

 3.driver-class-name:com.cj.jdbc.Driver，MySQL驱动版本必须是在6.x以上

4.Incorrect string value: ‘\xE5\xBC\xA0\xE6\x96\x87…’ for column ‘name’ at row 1

出现这个错误的原因是，数据库的编码格式为latin1 而我要将utf8的中文插入到数据库中。所以建议不要用JPA去生成表，自己手工去创建表，使其为UTF-8格式的。