黑盒子問題

bbscatking

	三寶都已經裝好了 Navicat 也能跑DB 目前卡在這裡 1 對ServerStart 直接點會出現 五月 04, 2025 9:22:41 下午 com.mchange.v2.log.MLog 資訊: MLog clients using java 1.4+ standard logging. 五月 04, 2025 9:22:41 下午 com.mchange.v2.c3p0.C3P0Registry 資訊: Initializing c3p0-0.9.5.2 [built 08-December-2015 22:06:04 -0800; debug? true; trace: 10] 五月 04, 2025 9:22:41 下午 com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource 資訊: Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 5, acquireRetryAttempts -> 0, acquireRetryDelay -> 500, autoCommitOnClose -> true, automaticTestTable -> connection_test_table, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, contextClassLoaderSource -> caller, dataSourceName -> 1hgeby9ba174vmb4n16wik|6267c3bb, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, extensions -> {}, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, forceSynchronousCheckins -> false, forceUseNamedDriverClass -> false, identityToken -> 1hgeby9ba174vmb4n16wik|6267c3bb, idleConnectionTestPeriod -> 60, initialPoolSize -> 10, jdbcUrl -> jdbc:mysql://localhost/l1jdb?useUnicode=true&characterEncoding=utf8, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 14400, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 100, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 10, numHelperThreads -> 3, preferredTestQuery -> null, privilegeSpawnedThreads -> false, properties -> {user=******, password=******}, propertyCycle -> 0, statementCacheNumDeferredCloseThreads -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, userOverrides -> {}, usesTraditionalReflectiveProxies -> false ] 五月 04, 2025 9:22:45 下午 l1j.server.b <init> 嚴重: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. aa.a: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)         at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)         at java.lang.reflect.Constructor.newInstance(Unknown Source)         at com.mysql.jdbc.ea.a(Util.java:425)         at com.mysql.jdbc.di.a(SQLError.java:989)         at com.mysql.jdbc.cb.<init>(MysqlIO.java:341)         at com.mysql.jdbc.x.a(ConnectionImpl.java:2251)         at com.mysql.jdbc.x.b(ConnectionImpl.java:2284)         at com.mysql.jdbc.x.c(ConnectionImpl.java:2083)         at com.mysql.jdbc.x.<init>(ConnectionImpl.java:806)         at com.mysql.jdbc.ay.<init>(JDBC4Connection.java:47)         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)         at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)         at java.lang.reflect.Constructor.newInstance(Unknown Source)         at com.mysql.jdbc.ea.a(Util.java:425)         at com.mysql.jdbc.x.a(ConnectionImpl.java:410)         at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:328)         at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:161)         at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:161)         at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:147)         at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPoolManager.initializeAutomaticTestTable(C3P0PooledConnectionPoolManager.java:1000)         at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPoolManager.createPooledConnectionPool(C3P0PooledConnectionPoolManager.java:921)         at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPoolManager.getPool(C3P0PooledConnectionPoolManager.java:397)         at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPoolManager.getPool(C3P0PooledConnectionPoolManager.java:414)         at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:140)         at l1j.server.b.<init>(DatabaseFactory.java:88)         at l1j.server.b.a(DatabaseFactory.java:101)         at l1j.server.Server.main(Server.java:42) Caused by: java.net.ConnectException: Connection refused: connect         at java.net.DualStackPlainSocketImpl.connect0(Native Method)         at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)         at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)         at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)         at java.net.AbstractPlainSocketImpl.connect(Unknown Source)         at java.net.PlainSocketImpl.connect(Unknown Source)         at java.net.SocksSocketImpl.connect(Unknown Source)         at java.net.Socket.connect(Unknown Source)         at com.mysql.jdbc.dr.a(StandardSocketFactory.java:211)         at com.mysql.jdbc.cb.<init>(MysqlIO.java:300)         ... 23 more 五月 04, 2025 9:22:45 下午 l1j.server.Server main 嚴重: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. aa.a: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)         at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)         at java.lang.reflect.Constructor.newInstance(Unknown Source)         at com.mysql.jdbc.ea.a(Util.java:425)         at com.mysql.jdbc.di.a(SQLError.java:989)         at com.mysql.jdbc.cb.<init>(MysqlIO.java:341)         at com.mysql.jdbc.x.a(ConnectionImpl.java:2251)         at com.mysql.jdbc.x.b(ConnectionImpl.java:2284)         at com.mysql.jdbc.x.c(ConnectionImpl.java:2083)         at com.mysql.jdbc.x.<init>(ConnectionImpl.java:806)         at com.mysql.jdbc.ay.<init>(JDBC4Connection.java:47)         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)         at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)         at java.lang.reflect.Constructor.newInstance(Unknown Source)         at com.mysql.jdbc.ea.a(Util.java:425)         at com.mysql.jdbc.x.a(ConnectionImpl.java:410)         at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:328)         at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:161)         at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:161)         at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:147)         at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPoolManager.initializeAutomaticTestTable(C3P0PooledConnectionPoolManager.java:1000)         at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPoolManager.createPooledConnectionPool(C3P0PooledConnectionPoolManager.java:921)         at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPoolManager.getPool(C3P0PooledConnectionPoolManager.java:397)         at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPoolManager.getPool(C3P0PooledConnectionPoolManager.java:414)         at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:140)         at l1j.server.b.<init>(DatabaseFactory.java:88)         at l1j.server.b.a(DatabaseFactory.java:101)         at l1j.server.Server.main(Server.java:42) Caused by: java.net.ConnectException: Connection refused: connect         at java.net.DualStackPlainSocketImpl.connect0(Native Method)         at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)         at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)         at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)         at java.net.AbstractPlainSocketImpl.connect(Unknown Source)         at java.net.PlainSocketImpl.connect(Unknown Source)         at java.net.SocksSocketImpl.connect(Unknown Source)         at java.net.Socket.connect(Unknown Source)         at com.mysql.jdbc.dr.a(StandardSocketFactory.java:211)         at com.mysql.jdbc.cb.<init>(MysqlIO.java:300)         ... 23 more 用管理員執行會跑出 Error: Unable to access jarfile l1jserver2.jar 想請問這應該如何解決

bbscatking

	有沒有大大可以求救