Скачать или смотреть java url decode

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certainly! url encoding and decoding are essential when dealing with web-related data. url encoding is used to convert characters into a format that can be transmitted over the internet. this is particularly important for special characters, spaces, or non-ascii characters that are not safe to include directly in a url.

in java, you can use the `java.net.urldecoder` class to decode a url-encoded string. below is a step-by-step tutorial on how to perform url decoding in java, along with a code example.

tutorial: url decoding in java

#### 1. understanding url encoding

when a url contains characters outside the standard ascii set, these characters are encoded using a specific format. for example:
a space is encoded as `%20`.
an exclamation mark (`!`) is encoded as `%21`.
a question mark (`?`) is encoded as `%3f`.

url encoding replaces unsafe ascii characters with a "%" followed by two hexadecimal digits.

#### 2. using `urldecoder` class

the `urldecoder` class in java provides methods to decode url-encoded strings. the primary method you will use is `decode(string str, string charset)`.

`str`: the url-encoded string.
`charset`: the character encoding to be used (e.g., "utf-8").

#### 3. sample code

below is a simple java program that demonstrates how to decode a url-encoded string.



#### 4. explanation of the code

we import the `java.net.urldecoder` and `java.nio.charset.standardcharsets` classes.
we define a url-encoded string, `encodedurl`, that contains several encoded characters.
we use the `urldecoder.decode()` method to decode the string by passing the encoded string and the character set (utf-8 in this case).
finally, we print both the encoded and decoded strings to the console.

#### 5. running the code

to run the code:
1. ensure you have java installed on your machine.
2. create a new java file named `urldecodeexample.java`.
3. copy the provided code into this file.
4. open a terminal or command prompt and navigate to the dire ...

#python decode
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