章后有常见错误纠错题，你按照那些题的思路进行排查

运行后可以弹出窗体，但加载不了数据，下面是运行后的信息

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.Environment <clinit>

信息: Hibernate 3.2.0

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.Environment <clinit>

信息: hibernate.properties not found

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.Environment buildBytecodeProvider

信息: Bytecode provider name : cglib

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.Environment <clinit>

信息: using JDK 1.4 java.sql.Timestamp handling

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.Configuration configure

信息: configuring from resource: /hibernate.cfg.xml

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.Configuration getConfigurationInputStream

信息: Configuration resource: /hibernate.cfg.xml

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.Configuration addResource

信息: Reading mappings from resource: pojo/User.hbm.xml

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues

信息: Mapping class: pojo.User -> tb_users

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.Configuration addResource

信息: Reading mappings from resource: pojo/Customer.hbm.xml

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues

信息: Mapping class: pojo.Customer -> tb_customer_info

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.Configuration addResource

信息: Reading mappings from resource: pojo/Communication.hbm.xml

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues

信息: Mapping class: pojo.Communication -> tb_communication_info

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.Configuration doConfigure

信息: Configured SessionFactory: null

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.HbmBinder bindCollectionSecondPass

信息: Mapping collection: pojo.Customer.communicationList -> tb_communication_info

十二月 27, 2018 3:47:42 下午 org.hibernate.connection.DriverManagerConnectionProvider configure

信息: Using Hibernate built-in connection pool (not for production use!)

十二月 27, 2018 3:47:42 下午 org.hibernate.connection.DriverManagerConnectionProvider configure

信息: Hibernate connection pool size: 20

十二月 27, 2018 3:47:42 下午 org.hibernate.connection.DriverManagerConnectionProvider configure

信息: autocommit mode: false

十二月 27, 2018 3:47:42 下午 org.hibernate.connection.DriverManagerConnectionProvider configure

信息: using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://127.0.0.1:3306/test02

十二月 27, 2018 3:47:42 下午 org.hibernate.connection.DriverManagerConnectionProvider configure

信息: connection properties: {user=root, password=****}

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: RDBMS: MySQL, version: 5.6.42-log

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: JDBC driver: MySQL Connector Java, version: mysql-connector-java-5.1.36 ( Revision: 4fc1f969f740409a4e03750316df2c0e429f3dc8 )

十二月 27, 2018 3:47:42 下午 org.hibernate.dialect.Dialect <init>

信息: Using dialect: org.hibernate.dialect.MySQLDialect

十二月 27, 2018 3:47:42 下午 org.hibernate.transaction.TransactionFactoryFactory buildTransactionFactory

信息: Using default transaction strategy (direct JDBC transactions)

十二月 27, 2018 3:47:42 下午 org.hibernate.transaction.TransactionManagerLookupFactory getTransactionManagerLookup

信息: No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Automatic flush during beforeCompletion(): disabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Automatic session close at end of transaction: disabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: JDBC batch size: 15

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: JDBC batch updates for versioned data: disabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Scrollable result sets: enabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: JDBC3 getGeneratedKeys(): enabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Connection release mode: auto

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Maximum outer join fetch depth: 2

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Default batch fetch size: 1

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Generate SQL with comments: disabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Order SQL updates by primary key: disabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory createQueryTranslatorFactory

信息: Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory

十二月 27, 2018 3:47:42 下午 org.hibernate.hql.ast.ASTQueryTranslatorFactory <init>

信息: Using ASTQueryTranslatorFactory

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Query language substitutions: {}

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: JPA-QL strict compliance: disabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Second-level cache: enabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Query cache: disabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory createCacheProvider

信息: Cache provider: org.hibernate.cache.NoCacheProvider

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Optimize cache for minimal puts: disabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Structured second-level cache entries: disabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Statistics: disabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Deleted entity synthetic identifier rollback: disabled

十二月 27, 2018 3:47:42 下午 org.hibernate.cfg.SettingsFactory buildSettings

信息: Default entity-mode: pojo

十二月 27, 2018 3:47:42 下午 org.hibernate.impl.SessionFactoryImpl <init>

信息: building session factory

十二月 27, 2018 3:47:42 下午 org.hibernate.impl.SessionFactoryObjectFactory addInstance

信息: Not binding factory to JNDI, no JNDI name configured

你提供的日志中没有异常错误

运行之后就是这样了，表格中没有数据，书本排错也没提及到，苦恼中...

你看一下你后台数据库表中有数据吗

有数据

如果数据库表里有数据，你运行时控制台还不抛异常，只能说明你访问的数据库表和你查看的数据库表不是同一个，程序读出的数据就是空的