EL语法错误为en [英] EL syntax error is en

问题描述

JSP页面中的以下语句在第一次出现等于时遇到错误.请问是什么原因以及如何解决此问题.请尽快纠正我

The following statement in JSP page encounters error near first equals occurence.What is the reason and how we can solve this problem.Please rectify me as soon as possible

${(fn:length(updateStock.todayDimensionStones)==i.count) && (!DimensionStones.status.equals('New')||!DimensionStones.isInspected.equals('No'))}

页面加载成功.但是在JBOSS VISUAL STUDIO编辑器中说

Page is loaded successfully.But in JBOSS VISUAL STUDIO editor says that

Multiple annotations found at this line:- Encountered "(" at line 1, 
     column 86. 
Was expecting one of: 
    "." ... 
    ">" ... 
    "gt" ... 
    "<" ... 
    "lt" ... 
    "==" ... 
    "eq" ... 
    "<=" ... 
    "le" ... 
    ">=" ... 
    "ge" ... 
    "!=" ... 
    "ne" ... 
    ")" ... 
    "[" ... 
    "+" ... 
    "-" ... 
    "*" ... 
    "/" ... 
    "div" ... 
    "%" ... 
    "mod" ... 
    "and" ... 
    "&&;&&;" ... 
    "or" ... 
    "||" ... 

    - EL Syntax Error 
    - Encountered "(" at line 1, 
     column 86. 
Was expecting one of: 
    "." ... 
    ">" ... 
    "gt" ... 
    "<" ... 
    "lt" ... 
    "==" ... 
    "eq" ... 
    "<=" ... 
    "le" ... 
    ">=" ... 
    "ge" ... 
    "!=" ... 
    "ne" ... 
    ")" ... 
    "[" ... 
    "+" ... 
    "-" ... 
    "*" ... 
    "/" ... 
    "div" ... 
    "%" ... 
    "mod" ... 
    "and" ... 
    "&&;&&;" ... 
    "or" ... 
    "||" ...

推荐答案

在JSP EL中，通常使用==(或!=)来比较字符串，而不是.equals():

In the JSP EL, == (or !=) is normally used to compare strings, not .equals():

${(fn:length(updateStock.todayDimensionStones) == i.count) && 
  (DimensionStones.status != 'New' || DimensionStones.isInspected != 'No')}

AFAIR，最新版本的JSP EL允许调用方法，但是您的IDE可能已过时，并且不希望使用它. Eclipse以信号错误而不是错误信号而闻名.信任您的应用服务器.

AFAIR, the latest version of the JSP EL allows calling methods, but your IDE is probably out of date and doesn't expect it. Eclipse is well-known for signalling errors that are not errors at all. Trust your app server.

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