异常-----freemarker.core.NonStringException
一，案例一
1.1、错误描述
<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)
1.2、错误原因
<#--定义布尔值-->
<#assign flag = true/>
${flag}
不能直接输出除了字符串和数字之外的类型，否则会报错
1.3、解决办法
将布尔类型转换为字符串输出，使用${XXX?string}转换
<#--定义布尔值-->
<#assign flag = true/>
${flag?string}
结果：true
二，案例二
2.1，错误描述
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>freemarker</title>
</head>
<body>
Error on line 12, column 12 in list.ftl
Expecting a string, date or number here, Expression num is instead a freemarker.core.NumericalRange
The problematic instruction:
----------
==> ${num} [on line 12, column 10 in list.ftl]
----------
Java backtrace for programmers:
----------
freemarker.core.NonStringException: Error on line 12, column 12 in list.ftl
Expecting a string, date or number here, Expression num is instead a freemarker.core.NumericalRange
at freemarker.core.Expression.getStringValue(Expression.java:126)
at freemarker.core.Expression.getStringValue(Expression.java:93)
at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:179)
at freemarker.core.Environment.visit(Environment.java:428)
at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)
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:203)
at com.you.test.freemarker.FreemarkerTest.testList(FreemarkerTest.java:190)
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$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
六月 03, 2014 10:30:40 下午 freemarker.log.JDK14LoggerFactory$JDK14Logger error
严重: Template processing error: "Error on line 12, column 12 in list.ftl\nExpecting a string, date or number here, Expression num is instead a freemarker.core.NumericalRange"
Error on line 12, column 12 in list.ftl
Expecting a string, date or number here, Expression num is instead a freemarker.core.NumericalRange
The problematic instruction:
----------
==> ${num} [on line 12, column 10 in list.ftl]
----------
Java backtrace for programmers:
----------
freemarker.core.NonStringException: Error on line 12, column 12 in list.ftl
Expecting a string, date or number here, Expression num is instead a freemarker.core.NumericalRange
at freemarker.core.Expression.getStringValue(Expression.java:126)
at freemarker.core.Expression.getStringValue(Expression.java:93)
at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:179)
at freemarker.core.Environment.visit(Environment.java:428)
at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)
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:203)
at com.you.test.freemarker.FreemarkerTest.testList(FreemarkerTest.java:190)
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 12, column 12 in list.ftl
Expecting a string, date or number here, Expression num is instead a freemarker.core.NumericalRange
The problematic instruction:
----------
==> ${num} [on line 12, column 10 in list.ftl]
----------
Java backtrace for programmers:
----------
freemarker.core.NonStringException: Error on line 12, column 12 in list.ftl
Expecting a string, date or number here, Expression num is instead a freemarker.core.NumericalRange
at freemarker.core.Expression.getStringValue(Expression.java:126)
at freemarker.core.Expression.getStringValue(Expression.java:93)
at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:179)
at freemarker.core.Environment.visit(Environment.java:428)
at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)
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:203)
at com.you.test.freemarker.FreemarkerTest.testList(FreemarkerTest.java:190)
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)
2.2、错误原因
<#--freemarker定义了一个连续的序列-->
<#assign nums=[1..100]/>
<#list nums as num>
${num}
</#list>
2.3、解决办法
去掉中括号，这样定义连续的序列：nums=1..100
1、错误描述
- <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
- <#--定义布尔值-->
- <#assign flag = true/>
- ${flag}
不能直接输出除了字符串和数字之外的类型，否则会报错
3、解决办法
将布尔类型转换为字符串输出，使用${XXX?string}转换
- <#--定义布尔值-->
- <#assign flag = true/>
- ${flag?string}
结果：true
异常-----freemarker.core.NonStringException的更多相关文章
- 异常-----freemarker.core.ParseException: Encountered
1.错误描述 freemarker.core.ParseException: Encountered " " at line 14, column 12 in myself.ftl ...
- 异常-----freemarker.core.ParseException: Unexpected end of file reached
freemarker自定义标签 1.错误描述 freemarker.core.ParseException: Unexpected end of file reached. at freemarker ...
- 异常-----freemarker.core.ParseException: Encountered "string"
1.错误描述 freemarker.core.ParseException: Encountered "string" at line 21, column 21 in type. ...
- 异常-----freemarker.core.InvalidReferenceException问题解决
案例一 1.1.错误描述 五月 28, 2014 9:56:48 下午 freemarker.log.JDK14LoggerFactory$JDK14Logger error 严重: Template ...
- 异常-----freemarker.core.ParseException: Token manager error
一,案例一 1.1.错误描述 freemarker.core.ParseException: Token manager error: freemarker.core.TokenMgrError: L ...
- 异常-----freemarker.template.TemplateException: Expected collection or sequence. datas evaluated instead to freemarker.core.HashLiteral$SequenceHash on line 7, column 18 in inc/select.ftl.
1.错误描述 六月 26, 2014 11:26:27 下午 freemarker.log.JDK14LoggerFactory$JDK14Logger error 严重: Template proc ...
- cosbench 异常 FreeMarker template error: The following has evaluated to null or missing
问题现象: 使用Cosbench 0.4.2.c4 版本测试Ceph RGW read test失败,遇到异常如下: FreeMarker template error: The following ...
- freemarker.core.InvalidReferenceException: Expression stackObject.value.get(propertyName).toString() is undefined
很奇怪的报错, 在实体中添加 toString方法后, 想在前台列表中使用 <s:debug标签调试, 发现报错如下: freemarker.core.InvalidReferenceExcep ...
- freemarker.core.InvalidReferenceException
1.错误描述 freemarker.core.InvalidReferenceException:on line 68,column 18 in ftl/inc/incPro.ftl p.mainSe ...
随机推荐
- BZOJ 4539: [Hnoi2016]树 [主席树 lca]
4539: [Hnoi2016]树 题意:不想写.复制模板树的子树,查询两点间距离. *** 终于有一道会做的题了...... 画一画发现可以把每次复制的子树看成一个大点来建一棵树,两点的lca一定在 ...
- 《深入理解Java虚拟机》——Java内存区域与内存溢出异常
程序计数器(Program Counter Register):一块较小的内存空间,可看作是当前线程所执行的字节码的行号指示器.字节码解释器工作时通过改变这个计数器的值来选取下一条需要执行的字节码指令 ...
- python的面向对象和面向过程
一.面向对象和面向过程的区别: a.面向过程: 1)根据业务逻辑从上到下写代码 2)开发思路是将数据和函数按照执行的逻辑顺序组织在一起 3)分开考虑数据与函数 定义性文字: 面向对象编程(Object ...
- [Python Study Notes] 编程仪式感的Hello World！
学习还是要有一点仪式感的,学单片机第一步,点个灯:学编程第一步,hello world! C:\Users\Liu>python Python 3.6.4 (v3.6.4:d48eceb, De ...
- 关于Frame加背景的那点事？
最近新生问我一个问题,继承自Frame(可不是继承自JFrame)的框架怎样添加背景图片, 真够坑的,当时还真懵了,废话少说直接上代码: import java.awt.*; import java. ...
- 卷积神经网络(CNN)在句子建模上的应用
之前的博文已经介绍了CNN的基本原理,本文将大概总结一下最近CNN在NLP中的句子建模(或者句子表示)方面的应用情况,主要阅读了以下的文献: Kim Y. Convolutional neural n ...
- thinkphp5判断移动或pc端访问并调用不同模板
废话不多说,直接上代码 先修改\thinkphp\library\think\view\driver\Think.php文件 把 public function __construct($config ...
- Sqlserver将数据从一张表插入到另一张表
1.如果是整个表复制表达如下: insert into table1 select * from table2 2.如果是有选择性的复制数据表达如下: insert into table1(colum ...
- Shiro 核心功能案例讲解 基于SpringBoot 有源码
Shiro 核心功能案例讲解 基于SpringBoot 有源码 从实战中学习Shiro的用法.本章使用SpringBoot快速搭建项目.整合SiteMesh框架布局页面.整合Shiro框架实现用身份认 ...
- web端表格测试用例
表格测试: 表格内容列表排序功能是否正常每一栏的宽度是否足够宽,表格里的文字是否都有折行?是否有因为某一格的内容太多,而将整行的内容拉长?表格是否能左(右)添加(删除)列,表格是否能上(下)添加(删除 ...