escaping | 易学教程

MySQL CHAR() Function and UTF8 Output?

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Javascript unescape() vs. Python urllib.unquote()

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问题 From reading various posts, it seems like JavaScript's unescape() is equivalent to Pythons urllib.unquote() , however when I test both I get different results: In browser console: unescape('%u003c%u0062%u0072%u003e'); output: In Python interpreter: import urllib urllib.unquote('%u003c%u0062%u0072%u003e') output: %u003c%u0062%u0072%u003e I would expect Python to also return . Any ideas as to what I'm missing here? Thanks! 回答1: %uxxxx is a non standard URL encoding scheme that is not

Allowing tags with Google App Engine and Jinja2

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问题 In my web app, the user can make blog posts. When I display the blog post, newlines aren't shown because I didn't replace the new lines with tags. The problem is that I've turned autoescaping on in Jinja, so tags are escaped. I don't want to temporarily disable autoescaping, I want to specifically allow tags. How would I do this? 回答1: I have another answer that I think is the best. Initially I was just displaying my variable post.content as-is, and the newlines weren't being

jquery escape square brackets to select element

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Consider a input element <input id="meta[152][value]" type="text" /> Here the input field is dynamically generated. I need to select that field. So I used, alert($('#meta[152][value]').val()); But this seems to be invalid. After searching I found, that the "square brackets" need to be escaped like #meta\\[152\\]\\[value\\] So how to do that ? I currently use this code, var id = "#meta[152][value]" // (I get this value by another method) I need the escaping to be done here. So that i can use as /** I need the value of id to be escaped using regex,replace or any other method to get #meta\[152\]\

How to detect if a string is encoded with escape() or encodeURIComponent()

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问题 I have a web service that receives data from various clients. Some of them sends the data encoded using escape(), while the others instead use encodeURIComponent(). Is there a way to detect the encoding used to escape the data? 回答1: Encourage your clients to use encodeURIComponent(). See this page for an explanation: Comparing escape(), encodeURI(), and encodeURIComponent(). If you really want to try to figure out exactly how something was encoded, you can try to look for some of the

Ruby on Rails: How to sanitize a string for SQL when not using find?

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问题 I'm trying to sanitize a string that involves user input without having to resort to manually crafting my own possibly buggy regex if possible, however, if that is the only way I would also appreciate if anyone can point me in the right direction to a regex that is unlikely to be missing anything. There are a number of methods in Rails that can allow you to enter in native SQL commands, how do people escape user input for those? The question I'm asking is a broad one, but in my particular

How to detect if a string is encoded with escape() or encodeURIComponent()

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I have a web service that receives data from various clients. Some of them sends the data encoded using escape(), while the others instead use encodeURIComponent(). Is there a way to detect the encoding used to escape the data? Encourage your clients to use encodeURIComponent(). See this page for an explanation: Comparing escape(), encodeURI(), and encodeURIComponent() . If you really want to try to figure out exactly how something was encoded, you can try to look for some of the characters that escape() and encodeURI() do not encode. mika This won't help in the server-side, but in the client

Default escaping in Freemarker

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In Freemarker templates we can use the escape directive to automatically apply an escaping to all interpolations inside the included block: <#escape x as x?html> <#-- name is escaped as html --> Hallo, ${name} </#escape> Is there a way to programmatically achieve a similar effect, defining a default escape applied to all interpolations in the template, including those outside escape directives? Thanks. To elaborate on Attila's answer: you can use a class like this one and then wrap your template loader like this: final TemplateLoader templateLoader = new ClassTemplateLoader(this.getClass(),

How to escape single quotes in Python on a server to be used in JavaScript on a client

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问题 Consider: >>> sample = "hello'world" >>> print sample hello'world >>> print sample.replace("'","\'") hello'world In my web application I need to store my Python string with all single quotes escaped for manipulation later in the client browsers JavaScript. The trouble is Python uses the same backslash escape notation, so the replace operation as detailed above has no effect. Is there a simple workaround? 回答1: Use: sample.replace("'", r"\'") or sample.replace("'", "\\'") 回答2: As a general

Oracle pl-sql escape character (for a “ ' ”)

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问题 When I am trying to execute INSERT statement in oracle, I got SQL Error: ORA-00917: missing comma error because there is a value as Alex's Tea Factory in my INSERT statement. How could I escape ' ? 回答1: To escape it, double the quotes: INSERT INTO TABLE_A VALUES ( 'Alex''s Tea Factory' ); 回答2: In SQL, you escape a quote by another quote: SELECT 'Alex''s Tea Factory' FROM DUAL 回答3: you can use ESCAPE like given example below The '_' wild card character is used to match exactly one character,