Unescape string java

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I did find some libs that can perform this task, but i'd rather use a single method that can perform this task. Here's a simple method to unescape XML. Here is one that I wrote in ten minutes. It does not use regular expressions, only simple iterations. I do not think that this can be enhanced to be much faster. If you work with JSP, use su:unescapeXml from openutils-elfunctions. Learn more. Asked 9 years, 11 months ago. Active 4 years, 6 months ago. Viewed 32k times.

Can someone help? Bas Hendriks Bas Hendriks 1 1 gold badge 6 6 silver badges 14 14 bronze badges. Active Oldest Votes. Bozho Bozho k gold badges silver badges bronze badges. That is a single method.

Java / .Net String Escape / Unescape

Bas, read commons-lang's source code and see if it's worth to reinvent the wheel in your case instead of justing using it. Bas - there's nothing in the standard Java library to do this, so either you use a third-party library that can do this for you, or you have to write it yourself not recommended. Balazs Zsoldos Balazs Zsoldos 5, 2 2 gold badges 19 19 silver badges 29 29 bronze badges.

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Sign up or log in Sign up using Google.Prerequisite: JavaScript escape. The unescape function in JavaScript takes a string as a parameter and use to decode that string encoded by the escape function. The hexadecimal sequence in the string is replaced by the characters they represent when decoded via unescape. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.

Unescape a String that contains standard Java escape sequences

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unescape string java

How to read a local text file using JavaScript? How to iterate over a JavaScript object? Prerequisite: JavaScript escape The unescape function in JavaScript takes a string as a parameter and use to decode that string encoded by the escape function. Syntax :. Recommended Posts: JavaScript typedArray. Check out this Author's contributed articles. Load Comments.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here.

Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I'm processing some Java source code using Java.

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I'm extracting the string literals and feeding them to a function taking a String. The problem is that I need to pass the unescaped version of the String to the function i.

Java Unescape HTML to String Example

Is there a function inside the Java API that does this? If not, can I obtain such functionality from some library?

Obviously the Java compiler has to do this conversion. In case anyone wants to know, I'm trying to un-obfuscate string literals in decompiled obfuscated Java files. The org. It also has overloads that writes directly to a java.

It looks like StringEscapeUtils handles Unicode escapes with one ubut not octal escapes, or Unicode escapes with extraneous u s. If your string can contain octal escapes, you may want to convert them to Unicode escapes first, or use another approach.

This transformed version is equally acceptable to a compiler for the Java programming language and represents the exact same program. The exact Unicode source can later be restored from this ASCII form by converting each escape sequence where multiple u 's are present to a sequence of Unicode characters with one fewer uwhile simultaneously converting each escape sequence with a single u to the corresponding single Unicode character.

If your string can contain Unicode escapes with extraneous uthen you may also need to preprocess this before using StringEscapeUtils. Alternatively you can try to write your own Java string literal unescaper from scratch, making sure to follow the exact JLS specifications. Came across a similar problem, wasn't also satisfied with the presented solutions and implemented this one myself.

I know this question was old, but I wanted a solution that doesn't involve libraries outside those included JRE6 i.

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Apache Commons is not acceptableand I came up with a simple solution using the built-in java. StreamTokenizer :. I'm a little late on this, but I thought I'd provide my solution since I needed the same functionality.

Basically I live create a class then return the results. Here is the method:. I came across the same problem, but I wasn't enamoured by any of the solutions I found here. So, I wrote one that iterates over the characters of the string using a matcher to find and replace the escape sequences.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I'm reading a sourcefile in Java, but when I print it sysoutthe escaped characters are no longer escaped. You'll find that there are plenty of other offerings in Apache Commons that might serve useful for other problems you have in Java development, so that you don't reinvent the wheel.

For example:. There are plenty of other escaping utilities in that library as well. So we need to escape the backslash to make n and t treated literally. StringEscapeUtils is good for string related operations. Learn more.

unescape string java

How do I escape a string in Java? Ask Question. Asked 10 years, 1 month ago. Active 2 years ago.

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Viewed 56k times. Marius Marius Could you post you current code for reading and outputting? How are you reading in the source file? And how exactly are you printing them? From your description it's not obvious to me where the escape sequences are getting converted into the escape characters that they represent. Active Oldest Votes. For example: System. Gopi Gopi 4, 15 15 gold badges 55 55 silver badges bronze badges. Dec 11 '14 at Sign up or log in Sign up using Google. Sign up using Facebook.

Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog.Escapes any values it finds into their EcmaScript String form. Deals correctly with quotes and control-chars tab, backslash, cr, ff, etc.

Escapes any values it finds into their Json String form. Unescapes any Java literals found in the String. Supports all known HTML 4. Unescapes a string containing entity escapes to a string containing the actual Unicode characters corresponding to the escapes. Supports HTML 4. If an entity is unrecognized, it is left alone, and inserted verbatim into the result string.

unescape string java

Supports only HTML 3. Supports only the five basic XML entities gt, lt, quot, amp, apos. Does not support DTDs or external entities. Note that Unicode characters greater than 0x7f are as of 3. If you still wish this functionality, you can achieve it via the following: StringEscapeUtils.

Note that XML 1. Though not strictly necessary, escapeXml10 will escape characters in the following ranges:. The returned string can be inserted into a valid XML 1. If you want to allow more non-text characters in an XML 1. XML 1. Do not use it for XML 1. Unescapes a string containing XML entity escapes to a string containing the actual Unicode characters corresponding to the escapes.

This may change in future releases. If the value contains a comma, newline or double quote, then the String value is returned enclosed in double quotes. If the value does not contain a comma, newline or double quote, then the String value is returned unchanged. If the value is enclosed in double quotes, and contains a comma, newline or double quote, then quotes are removed. Any double quote escaped characters a pair of double quotes are unescaped to just one double quote.September 28, 1 Comment.

Though this an integral part of the Java compiler when compiling code, there is no function in the standard Java runtime, that will convert such a String notation into an unescaped target String. Apache Commons has a StringUtils class, that can do this, but this requires a lot of overhead for just a small task. You need a rather large JAR to bind and have a license attached. Depending on the version, the Apache Commons implementation also lacks some functionality and has several implementation flaws.

Thank you so so much :D I searched and searched for a solution that actually works until I stumbled across this post. Works like a charm! You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account.

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unescape string java

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