Mybatis Generator 出现下面问题，没遇到过，求大神帮组

[qq_36292195]

java.sql.SQLException: java.lang.ClassCastException: java.math.BigInteger cannot
be cast to java.lang.Long
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1074)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:988)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:974)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:919)
at com.mysql.jdbc.ConnectionImpl.buildCollationMapping(ConnectionImpl.ja
va:1041)
at com.mysql.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImp
l.java:3481)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2
445)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2215)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:813)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Sou
rce)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:399)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:334)
at org.mybatis.generator.internal.db.ConnectionFactory.getConnection(Con
nectionFactory.java:68)
at org.mybatis.generator.config.Context.getConnection(Context.java:526)
at org.mybatis.generator.config.Context.introspectTables(Context.java:43
6)
at org.mybatis.generator.api.MyBatisGenerator.generate(MyBatisGenerator.
java:222)
at org.mybatis.generator.api.ShellRunner.main(ShellRunner.java:117)
Caused by: java.lang.ClassCastException: java.math.BigInteger cannot be cast to
java.lang.Long
at com.mysql.jdbc.ConnectionImpl.buildCollationMapping(ConnectionImpl.ja
va:992)
... 17 more

D:\generator>java -jar mybatis-generator-core-1.3.2.jar -configfile generator.xm
l -overwrite
java.sql.SQLException: java.lang.ClassCastException: java.math.BigInteger cannot
be cast to java.lang.Long
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1074)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:988)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:974)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:919)
at com.mysql.jdbc.ConnectionImpl.buildCollationMapping(ConnectionImpl.ja
va:1041)
at com.mysql.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImp
l.java:3481)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2
445)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2215)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:813)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Sou
rce)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:399)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:334)
at org.mybatis.generator.internal.db.ConnectionFactory.getConnection(Con
nectionFactory.java:68)
at org.mybatis.generator.config.Context.getConnection(Context.java:526)
at org.mybatis.generator.config.Context.introspectTables(Context.java:43
6)
at org.mybatis.generator.api.MyBatisGenerator.generate(MyBatisGenerator.
java:222)
at org.mybatis.generator.api.ShellRunner.main(ShellRunner.java:117)
Caused by: java.lang.ClassCastException: java.math.BigInteger cannot be cast to
java.lang.Long
at com.mysql.jdbc.ConnectionImpl.buildCollationMapping(ConnectionImpl.ja
va:992)
... 17 more



<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
<classPathEntry location="D:\generator\mysql-connector-java-5.1.21.jar" />
<context id="DB2Tables" targetRuntime="MyBatis3">
<commentGenerator>
<property name="suppressAllComments" value="true" />
</commentGenerator>
<jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost/test" userId="root" password="root">
</jdbcConnection>
<javaTypeResolver >
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<javaModelGenerator targetPackage="com.dto" targetProject="D:\generator\src">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>

<sqlMapGenerator targetPackage="com.mapping" targetProject="D:\generator\src">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>

<javaClientGenerator type="XMLMAPPER" targetPackage="com.dao" targetProject="D:\generator\src">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>
<table tableName="user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />
</context>

</generatorConfiguration>

[小灯光环]

java.sql.SQLException: java.lang.ClassCastException: java.math.BigInteger cannot be cast to java.lang.Long 把这一段去掉试试~ ： <javaTypeResolver > <property name="forceBigDecimals" value="false" /> </javaTypeResolver>