java.lang.NoClassDefFoundError异常

Posted 2023-02-18

Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/dao/QueryTimeoutException
at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.<init>(SQLErrorCodeSQLExceptionTranslator.java:86)
at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.<init>(SQLErrorCodeSQLExceptionTranslator.java:102)
at org.springframework.jdbc.support.JdbcAccessor.getExceptionTranslator(JdbcAccessor.java:99)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:407)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:456)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:464)
at org.tarena.dao.JdbcEmpDAO1.findAll(JdbcEmpDAO1.java:16)
at org.tarena.test.Test1.main(Test1.java:15)
Caused by: java.lang.ClassNotFoundException: org.springframework.dao.QueryTimeoutException
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 8 more

参考技术A 应该是sqring的jar包没导入全 参考技术B org/springframework/dao/QueryTimeoutException
这个类有问题，你自己检查下。