java.lang.AbstractMethodError: Method com/mysql/jdbc/PreparedStatement.isClosed()Z is abstract
-------导包出现重复
删掉3.4.6的
Method com/mysql/jdbc/PreparedStatement.isClosed()Z is abstract 报错解决
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java.lang.AbstractMethodError: Method com/mysql/jdbc/PreparedStatement.isClosed()Z is abstract
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java.lang.AbstractMethodError: Method oracle/jdbc/driver/OracleResultSetImpl.isClosed()Z is abstract
java.lang.AbstractMethodError: Method com/mchange/v2/c3p0/impl/NewProxyPreparedStatement.isClosed()Z is abstract
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Handler dispatch failed; nested exception is java.lang.AbstractMethodError: Method com/mchange/v2/c3p0/impl/NewProxyResultSet.isClosed()Z is abstract
Mybatis集成dbcp-java.lang.AbstractMethodError: Method org/apache/commons/dbcp/DelegatingResultSet.isClosed()Z is abstract
Receiver class com.mchange.v2.c3p0.impl.NewProxyResultSet does not define or inherit an implementation of the resolved method 'abstract boolean isClosed()' of interface java.sql.ResultSet.
Type mismatch: cannot convert from java.sql.PreparedStatement to com.mysql.jdbc.PreparedStatement
【已解决】com.mysql.jdbc.exceptions.jdbc4.CommunicationsExcepti：Communications link failure ----mysql连接报错