JAVA TOMCAT 连MYSQL 出问题了 java.lang.ClassCastException: org.apache.tomcat.dbcp.dbcp.

来源：百度知道 编辑：UC知道 时间：2024/06/05 12:25:35
问题：java.lang.ClassCastException: org.apache.tomcat.dbcp.dbcp.BasicDataSource
at org.webb.login.LoginServlet.doGet(LoginServlet.java:38)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(

url="jdbc:mysql://127.0.0.1:3306/liuupeng?characterEncoding=utf8"

url 后面的数据库和端口号之间好像有"/"吧。

<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://127.0.0.1:3306/log</property> （端口和具体的数据库之间有个/的）
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">123</property>
<mapping resource="cn/bsw3/www/entity/Customer.hbm.xml" />
</session-factory>