Can't convert boolean to string automatically, because the "boolean_format" setting was "true,false"

五月 11, 2017 5:06:50 下午 freemarker.log._JULLoggerFactory$JULLogger error
严重: Error executing FreeMarker template
FreeMarker template error:
Can't convert boolean to string automatically, because the "boolean_format" setting was "true,false", which is the legacy default computer-language format, and hence isn't accepted.

----
Tip: If you just want "true"/"false" result as you are generting computer-language output, use "?c", like ${myBool?c}.
----
Tip: You can write myBool?string('yes', 'no') and like to specify boolean formatting in place.
----
Tip: If you need the same two values on most places, the programmers should set the "boolean_format" setting to something like "yes,no".
----

----
FTL stack trace ("~" means nesting-related):
	- Failed at: ${column.nullable?right_pad(5, " ")}  [in template "baseTemplate/java_src/${basepackage_dir}/interfaceDoc/${className}Doc.html" at line 61, column 84]
----

Java stack trace (for programmers):
----
freemarker.core._MiscTemplateException: [... Exception message was already printed; see it above ...]
	at freemarker.core.Configurable.formatBoolean(Configurable.java:1001)
	at freemarker.core.EvalUtil.coerceModelToTextualCommon(EvalUtil.java:479)
	at freemarker.core.EvalUtil.coerceModelToStringOrUnsupportedMarkup(EvalUtil.java:420)
	at freemarker.core.Expression.evalAndCoerceToStringOrUnsupportedMarkup(Expression.java:107)
	at freemarker.core.BuiltInForString.getTargetString(BuiltInForString.java:34)
	at freemarker.core.BuiltInForString._eval(BuiltInForString.java:29)
	at freemarker.core.Expression.eval(Expression.java:81)
	at freemarker.core.MethodCall._eval(MethodCall.java:58)
	at freemarker.core.Expression.eval(Expression.java:81)
	at freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:96)
	at freemarker.core.DollarVariable.accept(DollarVariable.java:59)
	at freemarker.core.Environment.visit(Environment.java:362)
	at freemarker.core.IteratorBlock$IterationContext.executedNestedContentForCollOrSeqListing(IteratorBlock.java:315)
	at freemarker.core.IteratorBlock$IterationContext.executeNestedContent(IteratorBlock.java:271)
	at freemarker.core.IteratorBlock$IterationContext.accept(IteratorBlock.java:242)
	at freemarker.core.Environment.visitIteratorBlock(Environment.java:595)
	at freemarker.core.IteratorBlock.acceptWithResult(IteratorBlock.java:107)
	at freemarker.core.IteratorBlock.accept(IteratorBlock.java:93)
	at freemarker.core.Environment.visit(Environment.java:326)
	at freemarker.core.Environment.visit(Environment.java:332)
	at freemarker.core.Environment.process(Environment.java:305)
	at freemarker.template.Template.process(Template.java:378)
	at cn.org.rapid_framework.generator.Generator.saveNewOutputFileContent(Generator.java:233)
	at cn.org.rapid_framework.generator.Generator.generateNewFileOrInsertIntoFile(Generator.java:167)
	at cn.org.rapid_framework.generator.Generator.generateByModelProvider(Generator.java:126)
	at cn.org.rapid_framework.generator.Generator.generateByModelProvider(Generator.java:83)
	at cn.org.rapid_framework.generator.GeneratorFacade.generateByTable(GeneratorFacade.java:117)
	at cn.org.rapid_framework.generator.GeneratorMain.main(GeneratorMain.java:76)

Exception in thread "main" java.lang.RuntimeException: generate 'Database Table:equipment to ClassName:Equipment' oucur error,template is:baseTemplate/java_src/${basepackage_dir}/interfaceDoc/${className}Doc.html
	at cn.org.rapid_framework.generator.Generator.generateByModelProvider(Generator.java:128)
	at cn.org.rapid_framework.generator.Generator.generateByModelProvider(Generator.java:83)
	at cn.org.rapid_framework.generator.GeneratorFacade.generateByTable(GeneratorFacade.java:117)
	at cn.org.rapid_framework.generator.GeneratorMain.main(GeneratorMain.java:76)
Caused by: freemarker.core._MiscTemplateException: Can't convert boolean to string automatically, because the "boolean_format" setting was "true,false", which is the legacy default computer-language format, and hence isn't accepted.

----
Tip: If you just want "true"/"false" result as you are generting computer-language output, use "?c", like ${myBool?c}.
----
Tip: You can write myBool?string('yes', 'no') and like to specify boolean formatting in place.
----
Tip: If you need the same two values on most places, the programmers should set the "boolean_format" setting to something like "yes,no".
----

----
FTL stack trace ("~" means nesting-related):
	- Failed at: ${column.nullable?right_pad(5, " ")}  [in template "baseTemplate/java_src/${basepackage_dir}/interfaceDoc/${className}Doc.html" at line 61, column 84]
----
	at freemarker.core.Configurable.formatBoolean(Configurable.java:1001)
	at freemarker.core.EvalUtil.coerceModelToTextualCommon(EvalUtil.java:479)
	at freemarker.core.EvalUtil.coerceModelToStringOrUnsupportedMarkup(EvalUtil.java:420)
	at freemarker.core.Expression.evalAndCoerceToStringOrUnsupportedMarkup(Expression.java:107)
	at freemarker.core.BuiltInForString.getTargetString(BuiltInForString.java:34)
	at freemarker.core.BuiltInForString._eval(BuiltInForString.java:29)
	at freemarker.core.Expression.eval(Expression.java:81)
	at freemarker.core.MethodCall._eval(MethodCall.java:58)
	at freemarker.core.Expression.eval(Expression.java:81)
	at freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:96)
	at freemarker.core.DollarVariable.accept(DollarVariable.java:59)
	at freemarker.core.Environment.visit(Environment.java:362)
	at freemarker.core.IteratorBlock$IterationContext.executedNestedContentForCollOrSeqListing(IteratorBlock.java:315)
	at freemarker.core.IteratorBlock$IterationContext.executeNestedContent(IteratorBlock.java:271)
	at freemarker.core.IteratorBlock$IterationContext.accept(IteratorBlock.java:242)
	at freemarker.core.Environment.visitIteratorBlock(Environment.java:595)
	at freemarker.core.IteratorBlock.acceptWithResult(IteratorBlock.java:107)
	at freemarker.core.IteratorBlock.accept(IteratorBlock.java:93)
	at freemarker.core.Environment.visit(Environment.java:326)
	at freemarker.core.Environment.visit(Environment.java:332)
	at freemarker.core.Environment.process(Environment.java:305)
	at freemarker.template.Template.process(Template.java:378)
	at cn.org.rapid_framework.generator.Generator.saveNewOutputFileContent(Generator.java:233)
	at cn.org.rapid_framework.generator.Generator.generateNewFileOrInsertIntoFile(Generator.java:167)
	at cn.org.rapid_framework.generator.Generator.generateByModelProvider(Generator.java:126)
	... 3 more

这个错误其实错误信息中已经提示怎么处理了：

----
Tip: If you just want "true"/"false" result as you are generting computer-language output, use "?c", like ${myBool?c}.
----
Tip: You can write myBool?string('yes', 'no') and like to specify boolean formatting in place.
----
Tip: If you need the same two values on most places, the programmers should set the "boolean_format" setting to something like "yes,no".
----