Java 使用时模板处理错误？操作人员

我试图使用

report？is\u odd\u item

查看循环中的索引是否为奇数，这会导致以下错误：

SEVERE: Template processing error: "Error parsing included template sections/reports.ftl\nError on line 4, column 42, in template sections/reports.ftl\nFound is_odd_item, expecting one of:  is_directive,  parent,  js_string,  j_string,  uncap_first,  is_transform,  number,  is_hash,  trim,  children,  has_content,  iso_ms,  xml,  iso_utc,  byte,  double,  left_pad,  json_string,  matches,  capitalize,  number_to_datetime,  contains,  size,  iso_local_h_nz,  iso_utc_ms,  iso_local_m_nz,  is_collection,  long,  default,  iso_utc_h_nz,  iso_local_ms,  is_boolean,  last_index_of,  c,  iso_utc_m_nz,  is_macro,  rtf,  iso_utc_nz,  upper_case,  node_name,  reverse,  cap_first,  url,  is_hash_ex,  iso_nz,  is_enumerable,  exists,  number_to_date,  first,  iso_local,  date,  iso,  replace,  float,  right_pad,  datetime,  node_type,  split,  iso_ms_nz,  number_to_time,  is_sequence,  iso_utc_m,  html,  ancestors,  iso_utc_h,  iso_local_ms_nz,  new,  last,  sort,  eval,  lower_case,  web_safe,  is_date,  is_string,  iso_local_nz,  word_list,  seq_last_index_of,  node_namespace,  string,  keys,  iso_m_nz,  values,  seq_index_of,  chunk,  sort_by,  iso_m,  starts_with,  substring,  index_of,  iso_h,  root,  floor,  iso_h_nz,  ceiling,  if_exists,  chop_linebreak,  iso_local_h,  length,  is_indexable,  groups,  is_node,  iso_local_m,  int,  iso_utc_ms_nz,  xhtml,  ends_with,  round,  interpret,  is_method,  namespace,  short,  seq_contains,  time,  is_number in sections/reports.ftl"

Error parsing included template sections/reports.ftl
Error on line 4, column 42, in template sections/reports.ftl
Found is_odd_item, expecting one of:  is_directive,  parent,  js_string,  j_string,  uncap_first,  is_transform,  number,  is_hash,  trim,  children,  has_content,  iso_ms,  xml,  iso_utc,  byte,  double,  left_pad,  json_string,  matches,  capitalize,  number_to_datetime,  contains,  size,  iso_local_h_nz,  iso_utc_ms,  iso_local_m_nz,  is_collection,  long,  default,  iso_utc_h_nz,  iso_local_ms,  is_boolean,  last_index_of,  c,  iso_utc_m_nz,  is_macro,  rtf,  iso_utc_nz,  upper_case,  node_name,  reverse,  cap_first,  url,  is_hash_ex,  iso_nz,  is_enumerable,  exists,  number_to_date,  first,  iso_local,  date,  iso,  replace,  float,  right_pad,  datetime,  node_type,  split,  iso_ms_nz,  number_to_time,  is_sequence,  iso_utc_m,  html,  ancestors,  iso_utc_h,  iso_local_ms_nz,  new,  last,  sort,  eval,  lower_case,  web_safe,  is_date,  is_string,  iso_local_nz,  word_list,  seq_last_index_of,  node_namespace,  string,  keys,  iso_m_nz,  values,  seq_index_of,  chunk,  sort_by,  iso_m,  starts_with,  substring,  index_of,  iso_h,  root,  floor,  iso_h_nz,  ceiling,  if_exists,  chop_linebreak,  iso_local_h,  length,  is_indexable,  groups,  is_node,  iso_local_m,  int,  iso_utc_ms_nz,  xhtml,  ends_with,  round,  interpret,  is_method,  namespace,  short,  seq_contains,  time,  is_number in sections/reports.ftl
The problematic instruction:
----------
==> include sections[section] [on line 16, column 17 in layout.ftl]
----------

Java backtrace for programmers:
----------
freemarker.template.TemplateException: Error parsing included template sections/reports.ftl
Error on line 4, column 42, in template sections/reports.ftl
Found is_odd_item, expecting one of:  is_directive,  parent,  js_string,  j_string,  uncap_first,  is_transform,  number,  is_hash,  trim,  children,  has_content,  iso_ms,  xml,  iso_utc,  byte,  double,  left_pad,  json_string,  matches,  capitalize,  number_to_datetime,  contains,  size,  iso_local_h_nz,  iso_utc_ms,  iso_local_m_nz,  is_collection,  long,  default,  iso_utc_h_nz,  iso_local_ms,  is_boolean,  last_index_of,  c,  iso_utc_m_nz,  is_macro,  rtf,  iso_utc_nz,  upper_case,  node_name,  reverse,  cap_first,  url,  is_hash_ex,  iso_nz,  is_enumerable,  exists,  number_to_date,  first,  iso_local,  date,  iso,  replace,  float,  right_pad,  datetime,  node_type,  split,  iso_ms_nz,  number_to_time,  is_sequence,  iso_utc_m,  html,  ancestors,  iso_utc_h,  iso_local_ms_nz,  new,  last,  sort,  eval,  lower_case,  web_safe,  is_date,  is_string,  iso_local_nz,  word_list,  seq_last_index_of,  node_namespace,  string,  keys,  iso_m_nz,  values,  seq_index_of,  chunk,  sort_by,  iso_m,  starts_with,  substring,  index_of,  iso_h,  root,  floor,  iso_h_nz,  ceiling,  if_exists,  chop_linebreak,  iso_local_h,  length,  is_indexable,  groups,  is_node,  iso_local_m,  int,  iso_utc_ms_nz,  xhtml,  ends_with,  round,  interpret,  is_method,  namespace,  short,  seq_contains,  time,  is_number in sections/reports.ftl
        at freemarker.core.Include.accept(Include.java:162)
        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:167)
        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 spark.template.freemarker.FreeMarkerEngine.render(FreeMarkerEngine.java:70)
        at spark.TemplateViewRouteImpl$1.render(TemplateViewRouteImpl.java:61)
        at spark.TemplateViewRouteImpl$1.render(TemplateViewRouteImpl.java:58)
        at spark.TemplateViewRouteImpl.render(TemplateViewRouteImpl.java:86)
        at spark.http.matching.Routes.execute(Routes.java:62)
        at spark.http.matching.MatcherFilter.doFilter(MatcherFilter.java:128)
        at spark.embeddedserver.jetty.JettyHandler.doHandle(JettyHandler.java:50)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:189)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119)
        at org.eclipse.jetty.server.Server.handle(Server.java:517)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308)
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242)
        at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:261)
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
        at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75)
        at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)
        at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
        at java.lang.Thread.run(Thread.java:745)
Caused by: freemarker.core.ParseException: Error on line 4, column 42, in template sections/reports.ftl
Found is_odd_item, expecting one of:  is_directive,  parent,  js_string,  j_string,  uncap_first,  is_transform,  number,  is_hash,  trim,  children,  has_content,  iso_ms,  xml,  iso_utc,  byte,  double,  left_pad,  json_string,  matches,  capitalize,  number_to_datetime,  contains,  size,  iso_local_h_nz,  iso_utc_ms,  iso_local_m_nz,  is_collection,  long,  default,  iso_utc_h_nz,  iso_local_ms,  is_boolean,  last_index_of,  c,  iso_utc_m_nz,  is_macro,  rtf,  iso_utc_nz,  upper_case,  node_name,  reverse,  cap_first,  url,  is_hash_ex,  iso_nz,  is_enumerable,  exists,  number_to_date,  first,  iso_local,  date,  iso,  replace,  float,  right_pad,  datetime,  node_type,  split,  iso_ms_nz,  number_to_time,  is_sequence,  iso_utc_m,  html,  ancestors,  iso_utc_h,  iso_local_ms_nz,  new,  last,  sort,  eval,  lower_case,  web_safe,  is_date,  is_string,  iso_local_nz,  word_list,  seq_last_index_of,  node_namespace,  string,  keys,  iso_m_nz,  values,  seq_index_of,  chunk,  sort_by,  iso_m,  starts_with,  substring,  index_of,  iso_h,  root,  floor,  iso_h_nz,  ceiling,  if_exists,  chop_linebreak,  iso_local_h,  length,  is_indexable,  groups,  is_node,  iso_local_m,  int,  iso_utc_ms_nz,  xhtml,  ends_with,  round,  interpret,  is_method,  namespace,  short,  seq_contains,  time,  is_number in sections/reports.ftl
        at freemarker.core.BuiltIn.newBuiltIn(BuiltIn.java:255)
        at freemarker.core.FMParser.BuiltIn(FMParser.java:795)
        at freemarker.core.FMParser.AddSubExpression(FMParser.java:731)
        at freemarker.core.FMParser.PrimaryExpression(FMParser.java:278)
        at freemarker.core.FMParser.UnaryExpression(FMParser.java:324)
        at freemarker.core.FMParser.MultiplicativeExpression(FMParser.java:440)
        at freemarker.core.FMParser.AdditiveExpression(FMParser.java:390)
        at freemarker.core.FMParser.RangeExpression(FMParser.java:561)
        at freemarker.core.FMParser.RelationalExpression(FMParser.java:516)
        at freemarker.core.FMParser.EqualityExpression(FMParser.java:481)
        at freemarker.core.FMParser.AndExpression(FMParser.java:590)
        at freemarker.core.FMParser.OrExpression(FMParser.java:613)
        at freemarker.core.FMParser.Expression(FMParser.java:226)
        at freemarker.core.FMParser.If(FMParser.java:1175)
        at freemarker.core.FMParser.FreemarkerDirective(FMParser.java:2377)
        at freemarker.core.FMParser.Content(FMParser.java:2623)
        at freemarker.core.FMParser.OptionalBlock(FMParser.java:2791)
        at freemarker.core.FMParser.List(FMParser.java:1262)
        at freemarker.core.FMParser.FreemarkerDirective(FMParser.java:2380)
        at freemarker.core.FMParser.Content(FMParser.java:2623)
        at freemarker.core.FMParser.OptionalBlock(FMParser.java:2791)
        at freemarker.core.FMParser.Root(FMParser.java:2963)
        at freemarker.template.Template.<init>(Template.java:171)
        at freemarker.cache.TemplateCache.loadTemplate(TemplateCache.java:447)
        at freemarker.cache.TemplateCache.getTemplate(TemplateCache.java:360)
        at freemarker.cache.TemplateCache.getTemplate(TemplateCache.java:235)
        at freemarker.template.Configuration.getTemplate(Configuration.java:578)
        at freemarker.core.Environment.getTemplateForInclusion(Environment.java:1490)
        at freemarker.core.Include.accept(Include.java:157)
        ... 32 more

严重：模板处理错误：“分析包含的模板节/报表时出错。ftl\n在模板节/报表的第4行第42列出现错误。ftl\n查找为奇数项，应为以下项之一：is_指令、父项、js_字符串、j_字符串、uncap_first、is_变换、数字、is_哈希、修剪、子项、has_内容、iso_ms、xml、iso_utc、字节、双精度、左_pad、json_字符串。”，匹配、大写、数字到日期时间、包含、大小、iso_local_h_nz、iso_utc_ms、iso_local_m_nz、is_collection、long、default、iso_utc_h_nz、iso_local_nz、is_boolean、最后一个索引、c、iso_utc_m_nz、is_宏、rtf、iso_utc_nz、大写字母、节点名称、反向、大写字母、url、is_hash_ex、iso_可枚举、存在、，数字到时间，第一，iso本地，日期，iso，替换，浮点，右键盘，日期时间，节点类型，拆分，iso ms新西兰，数字到时间，是序列，iso utc m，html，祖先，iso utc h，iso本地ms新西兰，新，最后，排序，求值，小写，网络安全，is日期，is字符串，iso本地，单词列表，序号最后索引，node_名称空间、字符串、键、iso_m_nz、值、seq_index_of、chunk、sort by、iso_m、start_with、substring、index_of、iso_h、root、floor、iso_h_nz、ceiling、if_存在、chop_linebreak、iso_local_h、length、is_indexable、groups、is_node、iso_local_m、int、iso_utc_ms_nz、xhtml、end_with、round、is_方法，namespace，short，seq_contains，time，是sections/reports.ftl中的编号”
分析包含的模板节/reports.ftl时出错
模板节/reports.ftl第4行第42列出错
找到的是奇数项，应为以下项之一：is_指令、父项、js_字符串、j_字符串、uncap_first、is_转换、数字、is_哈希、修剪、子项、has_内容、iso_ms、xml、iso_utc、byte、double、left_pad、json_字符串、匹配项、大写、数字_到日期时间、包含项、大小、iso_本地_h_nz、iso_utc_本地_m_nz、is_collec选项，长，默认值，iso_utc_h_nz，iso_local_ms，is_boolean，最后一个索引，c，iso_utc_m_nz，is_macro，rtf，iso_utc_nz，大写，节点名称，反转，大写，url，is_hash_ex，iso_nz，可枚举，存在，编号到日期，第一，iso_local，日期，iso，替换，浮点，右键盘，日期时间，节点类型，拆分，iso_ms_nz，数字到时间，is_顺序，iso_utc_m，html，祖先，iso_utc_h，iso_local_ms_nz，new，last，sort，eval，lower_case，web_safe，is_date，is_string，iso_local_nz，word_list，seq_last_index of，node_命名空间，字符串，键，iso_m_nz，值，seq_index of，chunk，sort_by，iso_m，以，substring，index开始，iso_h，根，地板，iso_h_nz，天花板，如果存在，切碎线，iso_局部_h，长度，可索引，组，is_节点，iso_局部_m，int，iso_utc_ms_nz，xhtml，结尾为，圆形，解释，is_方法，命名空间，短，序列包含，时间，is_编号在节/reports.ftl中
有问题的指令：
----------
==>包括节[section][layout.ftl中第16行第17列]
----------
程序员的Java回溯：
----------
freemarker.template.TemplateException:分析包含的模板节/reports.ftl时出错
模板节/reports.ftl第4行第42列出错
找到的是奇数项，应为以下项之一：is_指令、父项、js_字符串、j_字符串、uncap_first、is_转换、数字、is_哈希、修剪、子项、has_内容、iso_ms、xml、iso_utc、byte、double、left_pad、json_字符串、匹配项、大写、数字_到日期时间、包含项、大小、iso_本地_h_nz、iso_utc_本地_m_nz、is_collec选项，长，默认值，iso_utc_h_nz，iso_local_ms，is_boolean，最后一个索引，c，iso_utc_m_nz，is_macro，rtf，iso_utc_nz，大写，节点名称，反转，大写，url，is_hash_ex，iso_nz，可枚举，存在，编号到日期，第一，iso_local，日期，iso，替换，浮点，右键盘，日期时间，节点类型，拆分，iso_ms_nz，数字到时间，is_顺序，iso_utc_m，html，祖先，iso_utc_h，iso_local_ms_nz，new，last，sort，eval，lower_case，web_safe，is_date，is_string，iso_local_nz，word_list，seq_last_index of，node_命名空间，字符串，键，iso_m_nz，值，seq_index of，chunk，sort_by，iso_m，以，substring，index开始，iso_h，根，地板，iso_h_nz，天花板，如果存在，切碎线，iso_局部_h，长度，可索引，组，is_节点，iso_局部_m，int，iso_utc_ms_nz，xhtml，结尾为，圆形，解释，is_方法，命名空间，短，序列包含，时间，is_编号在节/reports.ftl中
位于freemarker.core.Include.accept（Include.java:162）
访问（Environment.java:221）
位于freemarker.core.MixedContent.accept（MixedContent.java:92）
访问（Environment.java:221）
位于freemarker.core.IteratorBlock$Context.runLoop（IteratorBlock.java:167）
访问（Environment.java:428）
在freemarker.core.IteratorBlock.accept（IteratorBlock.java:102）中
访问（Environment.java:221）
位于freemarker.core.MixedContent.accept（MixedContent.java:92）
访问（Environment.java:221）
位于freemarker.core.Environment.process（Environment.java:199）
位于freemarker.template.template.process（template.java:259）
位于spark.template.freemarker.freemakerengine.render（freemakerengine.java:70）
位于spark.TemplateViewRouteImpl$1.render（TemplateViewRouteImpl.java:61）
位于spark.TemplateViewRouteImpl$1.render（TemplateViewRouteImpl.java:58）
在spark.TemplateViewRouteImpl.render（TemplateViewRouteImpl.java:86）中
在spark.http.matching.Routes.execute（Routes.ja）中
<#list reports as report>
    <p><#if report?is_odd_item>left<#else>right</#if></p>
</#list>

Line 4: <#if report?is_odd_item>>
                   ^ (column 42)

<#list reports as report >
    <p>${report?item_cycle('left', 'right')}</p>
</#list>