org.springframework.web.util.NestedServletException: Request processing failed;

[c100017]

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.StringIndexOutOfBoundsException: String index out of range: -1
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:656)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)


root cause

java.lang.StringIndexOutOfBoundsException: String index out of range: -1
java.lang.String.substring(String.java:1937)
freemarker.core.StringBuiltins$substringBI$1.exec(StringBuiltins.java:213)
freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:93)
freemarker.core.Expression.getAsTemplateModel(Expression.java:89)
freemarker.core.Expression.getStringValue(Expression.java:93)
freemarker.core.DollarVariable.accept(DollarVariable.java:76)
freemarker.core.Environment.visit(Environment.java:210)
freemarker.core.MixedContent.accept(MixedContent.java:92)
freemarker.core.Environment.visit(Environment.java:210)
freemarker.core.Environment.process(Environment.java:190)
freemarker.template.Template.process(Template.java:237)
org.springframework.web.servlet.view.freemarker.FreeMarkerView.processTemplate(FreeMarkerView.java:366)
org.springframework.web.servlet.view.freemarker.FreeMarkerView.doRender(FreeMarkerView.java:283)
org.springframework.web.servlet.view.freemarker.FreeMarkerView.renderMergedTemplateModel(FreeMarkerView.java:233)
org.springframework.web.servlet.view.AbstractTemplateView.renderMergedOutputModel(AbstractTemplateView.java:167)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

[c100017]

悲剧啊