org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.lang.NumberFormatException: For input string: "W%" ### Cause: java.lang.NumberFormatException: For input s
一个常见的myBatis xml文件中的引号错误：
| org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.lang.NumberFormatException: For input string: "W%" ### Cause: java.lang.NumberFormatException: For input string: "W%" at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:150) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:139) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:76) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59) at com.sun.proxy.$Proxy6.copyUserByDynamicSql(Unknown Source) at com.test.TestUser.testCopyUserByDynamicSql(TestUser.java:116) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) 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) Caused by: java.lang.NumberFormatException: For input string: "W%" at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:2043) at sun.misc.FloatingDecimal.parseDouble(FloatingDecimal.java:110) at java.lang.Double.parseDouble(Double.java:538) at org.apache.ibatis.ognl.OgnlOps.doubleValue(OgnlOps.java:243) at org.apache.ibatis.ognl.OgnlOps.compareWithConversion(OgnlOps.java:100) at org.apache.ibatis.ognl.OgnlOps.isEqual(OgnlOps.java:143) at org.apache.ibatis.ognl.OgnlOps.equal(OgnlOps.java:802) at org.apache.ibatis.ognl.ASTNotEq.getValueBody(ASTNotEq.java:53) at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:258) at org.apache.ibatis.ognl.ASTAnd.getValueBody(ASTAnd.java:61) at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:258) at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:470) at org.apache.ibatis.ognl.Ognl.getValue(Ognl.java:434) at org.apache.ibatis.scripting.xmltags.OgnlCache.getValue(OgnlCache.java:44) at org.apache.ibatis.scripting.xmltags.ExpressionEvaluator.evaluateBoolean(ExpressionEvaluator.java:32) at org.apache.ibatis.scripting.xmltags.IfSqlNode.apply(IfSqlNode.java:34) at org.apache.ibatis.scripting.xmltags.MixedSqlNode.apply(MixedSqlNode.java:33) at org.apache.ibatis.scripting.xmltags.TrimSqlNode.apply(TrimSqlNode.java:55) at org.apache.ibatis.scripting.xmltags.MixedSqlNode.apply(MixedSqlNode.java:33) at org.apache.ibatis.scripting.xmltags.DynamicSqlSource.getBoundSql(DynamicSqlSource.java:41) at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:292) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:81) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) ... 30 more |
简单的来看传入参数的字符串有问题，但是检查多边后字符串还是没问题，其实问题是习惯造成的，一般大家都有习惯在有引号嵌套的时候在外面使用"" ,在里面使用'' ,这就是问题所在，下面是错误的代码：
<if test= "username != null and username != ' ' ">
将其改为
<if test= 'username != null and username != " " ' >
再次测试则没有问题了。
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