Velocity - 使用jQuery时如何避免ParseErrorException？ [英] Velocity - How to avoid ParseErrorException when using jQuery?

问题描述

我正在尝试在网页上的某些JavaScript中添加jQuery帖子。整个页面由几个Velocity模板构成。一切都很好，直到我尝试添加jQuery帖子，现在我得到：

I'm trying to add a jQuery post to some JavaScript on a web page. The entire page is built up of several Velocity templates. Everything has been fine until I've tried to add the jQuery post, now I get:

org.apache.velocity.exception.ParseErrorException: Encountered "," at line 282, column 24 of /WEB-INF/velocity/www/comments.vm
Was expecting one of:
    "(" ...
    <RPAREN> ...
    <ESCAPE_DIRECTIVE> ...
~~~snip~~~

第282行是 $ .post（... ，第24列似乎是第一个，字符。最初我在这上面有JSON但我把它向上移动（到 var myJSONObject ... 行）因为我认为与无效JSON相关的错误（行开头的标签给出误导列号）。

Line 282 is $.post(... and column 24 appears to be the first "," character. Initially I had the JSON on this line, but I moved it up (to the var myJSONObject ... line)as I thought the error related to invalid JSON (tabs at the start of the line gave a misleading column number).

var myJSONObject = {"body": "", "action": "postcomment", "submitted": "true", "ajax": "true"};
myJSONObject.body = $("body").val();
$.post("$!{articleurl}", myJSONObject, function(result){            
    btn.textContent='Comment sent successfully.';  
});

---

次要更新

我更改了以下行：

var url = "$articleurl";

$.post(url, myJSONObject, function(result){
~~~snip~~~

解析异常仍然关注第一个，。我假设问题是Velocity认为它应该能够解析$ .post - 事实上，它是jQuery。我在其他Velocity VM模板中使用了jQuery而没有任何问题。有没有办法让Velocity在解析时忽略某些行/语句？

The parse exception still focuses on the first ",". I'm assuming the issue is that Velocity thinks it should be able to resolve $.post - when in fact, it's jQuery. I've used jQuery in other Velocity VM templates without any problem. Is there a way to get Velocity to ignore certain lines / statements when parsing?

更新2

我发现此链接，但它无法解决我的问题。添加 \ 之前 $。post 给出了完全相同的错误，但是该列是一个额外的，因为在行的开头添加了字符。

I found this link about escaping references in Velocity, but it does not resolve my issue. Adding a "\" before $.post gives me the exact same error, but the column is one extra, because of the character added at the start of the line.

推荐答案

你可以用包装你的javascript＃[[ ...]]＃告诉Velocity不解析封闭的块（Velocity 1.7中的新内容）

You can wrap your javascript with #[[ ... ]]# which tells Velocity to not parse the enclosed block (new in Velocity 1.7)

#[[ 
<script>
    ...
</script>
]]#

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