com.ibatis.common.jdbc.exception.NestedSQLException:
--- The error occurred in conf/User.xml.
--- The error occurred while applying a parameter map.
--- Check the updateUser-InlineParameterMap.
--- Check the parameter mapping for the 'id' property.
--- Cause: java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]The specified SQL type is not supported by this driver.
Caused by: java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]The specified SQL type is not supported by this driver.
at com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeUpdate(GeneralStatement.java:91)
at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.update(SqlMapExecutorDelegate.java:504)
at com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.update(SqlMapSessionImpl.java:90)
at com.ibatis.sqlmap.engine.impl.SqlMapClientImpl.update(SqlMapClientImpl.java:68)
at ibatis.dao.UserTestCase.testUpdateUser(UserTestCase.java:136)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:478)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:344)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]The specified SQL type is not supported by this driver.
at com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source)
at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source) 
      这个问题就非常的奇怪,因为我在做DAO单元测试的时候没有问题,可一集成测试的时候就出现了上面的问题.
然后,我在网上一找,就发现了一篇(http://www.javaeye.com/post/134608)中间提到了,换一个driver来试试.
当然,我试了,真的可以.我看到日志,原来那个id的值是NULL,所以出问题了.最终的问题也就出现在这.开发还是得小心,认真.