Request processing failed; nested exception is freemarker.core.NonStringException 异常解决
- <html>
- <head>
- <meta http-equiv="content-type" content="text/html; charset=UTF-8">
- <title>freemarker基本数据类型</title>
- </head>
- <body>
- 张三丰
- 123,456
- Error on line 20, column 8 in type.ftl
- Expecting a string, date or number here, Expression flag is instead a freemarker.template.TemplateBooleanModel$2
- The problematic instruction:
- ----------
- ==> ${flag} [on line 20, column 6 in type.ftl]
- ----------
- Java backtrace for programmers:
- ----------
- freemarker.core.NonStringException: Error on line 20, column 8 in type.ftl
- Expecting a string, date or number here, Expression flag is instead a freemarker.template.TemplateBooleanModel$2
- at freemarker.core.Expression.getStringValue(Expression.java:126)
- at freemarker.core.Expression.getStringValue(Expression.java:93)
- at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
- at freemarker.core.Environment.visit(Environment.java:221)
- at freemarker.core.MixedContent.accept(MixedContent.java:92)
- at freemarker.core.Environment.visit(Environment.java:221)
- at freemarker.core.Environment.process(Environment.java:199)
- at freemarker.template.Template.process(Template.java:259)
- at com.you.freemarker.FreemarkerTemplate.printFtl(FreemarkerTemplate.java:77)
- at com.you.test.freemarker.FreemarkerTest.studentPrint(FreemarkerTest.java:172)
- at com.you.test.freemarker.FreemarkerTest.testDataType(FreemarkerTest.java:159)
- 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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
- at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
- at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
- at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
- at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
- at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
- at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
- at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
- at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
- at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
- at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
- at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
- at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
- at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
- at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
- at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
- at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
- at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
- at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
- at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
- 五月 30, 2014 11:23:18 下午 freemarker.log.JDK14LoggerFactory$JDK14Logger error
- 严重: Template processing error: "Error on line 20, column 8 in type.ftl\nExpecting a string, date or number here, Expression flag is instead a freemarker.template.TemplateBooleanModel$2"
- Error on line 20, column 8 in type.ftl
- Expecting a string, date or number here, Expression flag is instead a freemarker.template.TemplateBooleanModel$2
- The problematic instruction:
- ----------
- ==> ${flag} [on line 20, column 6 in type.ftl]
- ----------
- Java backtrace for programmers:
- ----------
- freemarker.core.NonStringException: Error on line 20, column 8 in type.ftl
- Expecting a string, date or number here, Expression flag is instead a freemarker.template.TemplateBooleanModel$2
- at freemarker.core.Expression.getStringValue(Expression.java:126)
- at freemarker.core.Expression.getStringValue(Expression.java:93)
- at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
- at freemarker.core.Environment.visit(Environment.java:221)
- at freemarker.core.MixedContent.accept(MixedContent.java:92)
- at freemarker.core.Environment.visit(Environment.java:221)
- at freemarker.core.Environment.process(Environment.java:199)
- at freemarker.template.Template.process(Template.java:259)
- at com.you.freemarker.FreemarkerTemplate.printFtl(FreemarkerTemplate.java:77)
- at com.you.test.freemarker.FreemarkerTest.studentPrint(FreemarkerTest.java:172)
- at com.you.test.freemarker.FreemarkerTest.testDataType(FreemarkerTest.java:159)
- 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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
- at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
- at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
- at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
- at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
- at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
- at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
- at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
- at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
- at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
- at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
- at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
- at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
- at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
- 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)
- Error on line 20, column 8 in type.ftl
- Expecting a string, date or number here, Expression flag is instead a freemarker.template.TemplateBooleanModel$2
- The problematic instruction:
- ----------
- ==> ${flag} [on line 20, column 6 in type.ftl]
- ----------
- Java backtrace for programmers:
- ----------
- freemarker.core.NonStringException: Error on line 20, column 8 in type.ftl
- Expecting a string, date or number here, Expression flag is instead a freemarker.template.TemplateBooleanModel$2
- at freemarker.core.Expression.getStringValue(Expression.java:126)
- at freemarker.core.Expression.getStringValue(Expression.java:93)
- at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
- at freemarker.core.Environment.visit(Environment.java:221)
- at freemarker.core.MixedContent.accept(MixedContent.java:92)
- at freemarker.core.Environment.visit(Environment.java:221)
- at freemarker.core.Environment.process(Environment.java:199)
- at freemarker.template.Template.process(Template.java:259)
- at com.you.freemarker.FreemarkerTemplate.printFtl(FreemarkerTemplate.java:77)
- at com.you.test.freemarker.FreemarkerTest.studentPrint(FreemarkerTest.java:172)
- at com.you.test.freemarker.FreemarkerTest.testDataType(FreemarkerTest.java:159)
- 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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
- at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
- at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
- at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
- at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
- at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
- at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
- at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
- at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
- at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
- at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
- at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
- at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
- at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
- 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)
2、错误原因
[html] view plain
copy
print ?
- <#--定义布尔值-->
- <#assign flag = true/>
- ${flag}
3、解决办法
将布尔类型转换为字符串输出
将dto 中boolean 类型的isXXXX 改为getXXX