SQLException: 'Infinity' is not a valid numeric or
项目异常，报错如下，原因是因为某一个字段设置值是a/b ，b为0的原因（数据库设置为double)。
com.jfinal.plugin.activerecord.ActiveRecordException: java.sql.SQLException: 'Infinity' is not a valid numeric or approximate numeric value
at com.jfinal.plugin.activerecord.Model.save(Model.java:375)
at com.lxinet.qqorder.controller.OrdersController.save(OrdersController.java:433)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.jfinal.aop.Invocation.invoke(Invocation.java:71)
at com.lxinet.qqorder.interceptor.UserLoginInterceptor.intercept(UserLoginInterceptor.java:16)
at com.jfinal.aop.Invocation.invoke(Invocation.java:65)
at com.jfinal.core.ActionHandler.handle(ActionHandler.java:74)
at com.jfinal.core.JFinalFilter.doFilter(JFinalFilter.java:72)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.sql.SQLException: 'Infinity' is not a valid numeric or approximate numeric value
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:987)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:982)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:927)
at com.mysql.jdbc.PreparedStatement.setDouble(PreparedStatement.java:3680)
at com.mysql.jdbc.PreparedStatement.setObject(PreparedStatement.java:3994)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.setObject(NewProxyPreparedStatement.java:365)
at com.jfinal.plugin.activerecord.dialect.Dialect.fillStatement(Dialect.java:68)
at com.jfinal.plugin.activerecord.Model.save(Model.java:369)
... 26 more