错误异常信息
2020-02-26 17:23:20,907 [http-nio-9060-exec-1] ERROR o.a.c.c.C.[.[.[.[dispatcherServlet] 175 - Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Could not parse as expression: " //表头
{field: 'id', title: 'ID', width: 80, sort: true, fixed: 'left'}
, {field: 'username', title: '用户名', width: 80}
, {field: 'sex', title: '性别', width: 80, sort: true}
, {field: 'city', title: '城市', width: 80}
, {field: 'sign', title: '签名', width: 177}
, {field: 'experience', title: '积分', width: 80, sort: true}
, {field: 'score', title: '评分', width: 80, sort: true}
, {field: 'classify', title: '职业', width: 80}
, {field: 'wealth', title: '财富', width: 135, sort: true}
" (template: "/index" - line 26, col 23)] with root cause
org.thymeleaf.exceptions.TemplateProcessingException: Could not parse as expression: " //表头
{field: 'id', title: 'ID', width: 80, sort: true, fixed: 'left'}
, {field: 'username', title: '用户名', width: 80}
, {field: 'sex', title: '性别', width: 80, sort: true}
, {field: 'city', title: '城市', width: 80}
, {field: 'sign', title: '签名', width: 177}
, {field: 'experience', title: '积分', width: 80, sort: true}
, {field: 'score', title: '评分', width: 80, sort: true}
, {field: 'classify', title: '职业', width: 80}
, {field: 'wealth', title: '财富', width: 135, sort: true}
" (template: "/index" - line 26, col 23)
at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:131)
at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:62)
at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:44)
at org.thymeleaf.engine.EngineEventUtils.parseAttributeExpression(EngineEventUtils.java:220)
at org.thymeleaf.engine.EngineEventUtils.computeAttributeExpression(EngineEventUtils.java:207)
at org.thymeleaf.standard.processor.AbstractStandardExpressionAttributeTagProcessor.doProcess(AbstractStandardExpressionAttributeTagProcessor.java:125)
at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74)
at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95)
at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633)
at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314)
at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205)
at org.thymeleaf.engine.TemplateModel.process(TemplateModel.java:136)
at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:661)
at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098)
at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072)
at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:362)
at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:189)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1373)
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1118)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1057)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
前端对应代码：
<script>
//一般直接写在一个js文件中
layui.use('table', function () {
var table = layui.table;
//第一个实例
table.render({
elem: '#demo'
, height: 312
, url: '/demo/table/user/' //数据接口
, page: true //开启分页
, cols: [[ //表头
{field: 'id', title: 'ID', width: 80, sort: true, fixed: 'left'}
, {field: 'username', title: '用户名', width: 80}
, {field: 'sex', title: '性别', width: 80, sort: true}
, {field: 'city', title: '城市', width: 80}
, {field: 'sign', title: '签名', width: 177}
, {field: 'experience', title: '积分', width: 80, sort: true}
, {field: 'score', title: '评分', width: 80, sort: true}
, {field: 'classify', title: '职业', width: 80}
, {field: 'wealth', title: '财富', width: 135, sort: true}
]]
});
});
</script>
解决方案
将table.render渲染中的cols表头列，[[ ]]分开，写成这样：
[
[
..... code .....
]
]
原因
原因： [[]]在thymeleaf中表示内联表达式，导致渲染错误。