multiprocessing Process,current_process multiprocessing Manager (,m_list,m_dict): m_dict[] = m_list.append() __name__ == : Manager() mgr: m_list=mgr.list() m_dict=mgr.dict() m_list.append() p1=Process(=f,=(,m_dict,m_list)) p1.start() p1.join() (m_list) (m_dict
老师,我知道哪里出错了,可是怎么改呢,明明和视频一样的代码,它可以运行,我的却出错
append添加数据的时候明明是先添加新闻1的两个标签,可是第二行却是新闻2对应标签1了,我以为是因为一起commit的问题,我自己测试了下两个新闻分开提交,表显示的还是这个顺序,只有在创建第三个表的时候把新闻放在第二列,顺序才会和append添加的顺序一样,这个顺序怎样应该没什么影响吧
老师,这个怎么改啊
老师我这个是什么问题为啥链接失败 Tue Nov 07 04:20:51 CST 2023 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification. Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 782 milliseconds ago. The last packet sent successfully to the server was 774 milliseconds ago. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:990) at com.mysql.jdbc.ExportControlled.transformSocketToSSLSocket(ExportControlled.java:201) at com.mysql.jdbc.MysqlIO.negotiateSSLConnection(MysqlIO.java:4869) at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1656) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1217) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2189) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2220) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2015) at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:768) at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:385) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:323) at java.sql.DriverManager.getConnection(DriverManager.java:664) at java.sql.DriverManager.getConnection(DriverManager.java:247) at jdbcTest.main(jdbcTest.java:22) Caused by: javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate) at sun.security.ssl.HandshakeContext.<init>(HandshakeContext.java:171) at sun.security.ssl.ClientHandshakeContext.<init>(ClientHandshakeContext.java:101) at sun.security.ssl.TransportContext.kickstart(TransportContext.java:238) at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:394) at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:373) at com.mysql.jdbc.ExportControlled.transformSocketToSSLSocket(ExportControlled.java:186) ... 18 more
这个跟Webpack构建Vue环境有什么联系或区别?
像这种弹窗该咋设置啊,我记得讲过不记得哪节了,能提示一下吗
老师,这个星星原本意思是啥,就是指 多组吗,为什么要申明是多组,只能用在字典上,还是列表,元组也可以
这个no usages是哪里出现的纰漏呀
java.awt.*javax.swing.*BallGamr JFrame { Image =Toolkit.().getImage()Image =Toolkit.().getImage()(Graphics g){ System..println()g.drawImage()g.drawImage()} (){ setSize()setLocation()setVisible()} (String[]args){ System..println()BallGamr game = BallGamr()game.launchFrame()} }
我这是哪里出现了问题,出现不了图片只有窗口
这些命令是要自己能够敲出来吗
z这里是因为上面的引用才在下面extend JFrame的还是因为什么原因
文档的引用和视频中的引用不一样,为什么呀
为什么报错,跟视频里的不一样
为什么这里的
Math.random();外面不用加括号上一个教程中却加了
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