dbunit2.4.9和poi3.9整合版本问题小述

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开源 unitils dbunit poi

每次用开源的框架时，最蛋疼的不是业务逻辑如何如何复杂，而是痛苦的版本问题。开源的框架都不是不同的团队搞出来的东西，因此版本兼容做的不是很全面完善。可是作为一个小程序员也没有必要去指责框架的问题了，毕竟我们自己造轮子还是太费时，还有最重要的是水平达不到啊。在此就先发发牢骚了，下面切入正题了，相信用过unitils的朋友们都遇到过这个问题喽，截图如下：（此为dbunit2.4.9和poi3.9最新版本）

java.lang.NoSuchMethodError: org.apache.poi.hssf.usermodel.HSSFDateUtil.isCellDateFormatted(Lorg/apache/poi/hssf/usermodel/HSSFCell;)Z
	at org.dbunit.dataset.excel.XlsTable.getValue(XlsTable.java:153)
	at unitils.test.excel.MultiSchemaXlsDataSetReader$XlsTable.getValue(MultiSchemaXlsDataSetReader.java:114)
	at org.dbunit.operation.AbstractBatchOperation.isEmpty(AbstractBatchOperation.java:77)
	at org.dbunit.operation.AbstractBatchOperation.execute(AbstractBatchOperation.java:135)
	at org.dbunit.operation.CompositeOperation.execute(CompositeOperation.java:79)
	at org.unitils.dbunit.datasetloadstrategy.impl.CleanInsertLoadStrategy.doExecute(CleanInsertLoadStrategy.java:45)
	at org.unitils.dbunit.datasetloadstrategy.impl.BaseDataSetLoadStrategy.execute(BaseDataSetLoadStrategy.java:44)
	at org.unitils.dbunit.DbUnitModule.insertDataSet(DbUnitModule.java:230)
	at org.unitils.dbunit.DbUnitModule.insertDataSet(DbUnitModule.java:153)
	at org.unitils.dbunit.DbUnitModule$DbUnitListener.beforeTestSetUp(DbUnitModule.java:557)
	at org.unitils.core.Unitils$UnitilsTestListener.beforeTestSetUp(Unitils.java:273)
	at org.unitils.UnitilsJUnit4TestClassRunner$TestListenerInvokingMethodRoadie.runBeforesThenTestThenAfters(UnitilsJUnit4TestClassRunner.java:151)
	at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:86)
	at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:49)
	at org.unitils.UnitilsJUnit4TestClassRunner.invokeTestMethod(UnitilsJUnit4TestClassRunner.java:95)
	at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:61)
	at org.unitils.UnitilsJUnit4TestClassRunner.access$000(UnitilsJUnit4TestClassRunner.java:44)
	at org.unitils.UnitilsJUnit4TestClassRunner$1.run(UnitilsJUnit4TestClassRunner.java:62)
	at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:33)
	at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:45)
	at org.unitils.UnitilsJUnit4TestClassRunner.run(UnitilsJUnit4TestClassRunner.java:68)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

这里总是提示NoSuchMethod这个问题，翻看dbunit的pom.xml文件发现他依赖的是poi3.2-FINAL版本，这个真是让人吐血啊，这个版本比较久了，虽然在spring中导出Excel视图我用的是poi3.9版本，这两个版本Cell的创建方式不同，但我还是为了解决它换了poi3.2-FINAL版本，期望问题得以解决。在满怀信心的点击了

Junit Test后我的心凉了，发现又会提示如下错误：

org.unitils.core.UnitilsException: Error inserting test data from DbUnit dataset for method public void unitils.test.impl.UserDaoTest.findUserByUserName()
	at org.unitils.dbunit.DbUnitModule.insertDataSet(DbUnitModule.java:156)
	at org.unitils.dbunit.DbUnitModule$DbUnitListener.beforeTestSetUp(DbUnitModule.java:557)
	at org.unitils.core.Unitils$UnitilsTestListener.beforeTestSetUp(Unitils.java:273)
	at org.unitils.UnitilsJUnit4TestClassRunner$TestListenerInvokingMethodRoadie.runBeforesThenTestThenAfters(UnitilsJUnit4TestClassRunner.java:151)
	at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:86)
	at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:49)
	at org.unitils.UnitilsJUnit4TestClassRunner.invokeTestMethod(UnitilsJUnit4TestClassRunner.java:95)
	at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:61)
	at org.unitils.UnitilsJUnit4TestClassRunner.access$000(UnitilsJUnit4TestClassRunner.java:44)
	at org.unitils.UnitilsJUnit4TestClassRunner$1.run(UnitilsJUnit4TestClassRunner.java:62)
	at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:33)
	at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:45)
	at org.unitils.UnitilsJUnit4TestClassRunner.run(UnitilsJUnit4TestClassRunner.java:68)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.unitils.core.UnitilsException: Error while executing DataSetLoadStrategy
	at org.unitils.dbunit.datasetloadstrategy.impl.BaseDataSetLoadStrategy.execute(BaseDataSetLoadStrategy.java:46)
	at org.unitils.dbunit.DbUnitModule.insertDataSet(DbUnitModule.java:230)
	at org.unitils.dbunit.DbUnitModule.insertDataSet(DbUnitModule.java:153)
	... 18 more
Caused by: org.dbunit.dataset.NoSuchColumnException: user.ID -  (Non-uppercase input column: id) in ColumnNameToIndexes cache map. Note that the map's column names are NOT case sensitive.
	at org.dbunit.dataset.AbstractTableMetaData.getColumnIndex(AbstractTableMetaData.java:117)
	at org.dbunit.operation.AbstractOperation.getOperationMetaData(AbstractOperation.java:89)
	at org.dbunit.operation.AbstractBatchOperation.execute(AbstractBatchOperation.java:140)
	at org.dbunit.operation.CompositeOperation.execute(CompositeOperation.java:79)
	at org.unitils.dbunit.datasetloadstrategy.impl.CleanInsertLoadStrategy.doExecute(CleanInsertLoadStrategy.java:45)
	at org.unitils.dbunit.datasetloadstrategy.impl.BaseDataSetLoadStrategy.execute(BaseDataSetLoadStrategy.java:44)
	... 20 more

细看Caused by：是没有这列user.ID,google,度娘后发现只能是改源码或者把dbunit换成2.4.2版本。确实dbunit2.4.2和poi3.2-FINAL可以完美兼容，问题得以解决。可是我不甘心啊，为什么辛辛苦苦写的spring Excel View却要因为一个测试要从新更改为poi3.2的API，这是个不小的工程。于是我选择了暴力的手段，更改源码，google上说其实dbunit可以支持高版本的poi，就是要改pom文件，然后重新编译。

在网上找到了dbunit2.4.9的源码包，更改poi的依赖改为如下：

 <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi</artifactId>
      <version>3.9</version>
      <exclusions>
        <exclusion>
          <artifactId>log4j</artifactId>
          <groupId>log4j</groupId>
        </exclusion>
        <exclusion>
          <artifactId>commons-logging</artifactId>
          <groupId>commons-logging</groupId>
        </exclusion>
      </exclusions>
      <optional>true</optional>
    </dependency>

这样源码再重新编译时用到的就是poi3.9的API了，dbunit就可以支持高版本的poi版本了。

第一个问题得已解决了，第二个问题找不到***.ID是由于unitils和dbunit的版本不兼容的问题，因为unitils支持的dbunit是2.2.2。而unitils默认调用的是dbunit的DefaultMetadataHandler.class，需要把这个类更改为如下：

boolean areEqual = 
                areEqualIgnoreNull(table, tableName, caseSensitive) &&
                areEqualIgnoreNull(column, columnName, caseSensitive);
        return areEqual;

这样第二个问题得以解决了，当然也得重新编译dbunit2.4.9喽，最后问题得以解决了。截图如下：