java.lang.ClassCastException：java.lang.Integer无法转换为java.math.BigDecimal

Question

我已将Java项目的数据源从Oracle更改为PostgreSQL。我能够成功更改连接字符串，也能够放置新的postgresql查询。返回的旧查询和新查询的列都是相似的，因此可能会出现任何不匹配的情况。但是会抛出以下异常：

java.lang.ClassCastException: java.lang.Integer cannot be cast to java.math.BigDecimal
    at 
*.JdbcTrialProvider.mileStoneCountTypeFactory(JdbcTrialProvider.java:425)
    at *.tr002.providers.JdbcTrialProvider.milestonesTypeFactory(JdbcTrialProvider.java:360)
    at *.providers.JdbcTrialProvider.getTrialCharacteristicsByTrialNumber(JdbcTrialProvider.java:277)
    at*test.InfoHubTest.test(InfoHubTest.java:102)
    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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

使用milestone.setForecasted(((BigDecimal) forecasted).intValueExact())时

请让我知道是否需要更多信息。

Answer 1

替换milestone.setForecasted(((BigDecimal) forecasted).intValueExact())用milestone.setForecasted((Integer)forecasted)可以达到目的。