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If you want to decode base64 to STRING (not bytes array) and you know that result contains utf8 characters then atob will fail in general e.g. for character 💩 the atob("8J+SqQ==") will give wrong result . In this case you can use above solution and convert result bytes array to string in proper way e.g. :
- Overview
- Using Standard Java Library Methods
- Encoding/Decoding Using Apache Commons Code
- Converting A String to A Byte Array
- Conclusion
In this tutorial, we explore the various utilities that provide Base64 encoding and decoding functionality in Java. We’re mainly going to illustrate the standard Java Base64utility. Also, we use the utility APIs of Apache Commons.
Java supports Base64 encoding and decoding features through the java.util.Base64utility class. Let’s start by looking at a basic encoder process.
First, we need to define the commons-codec dependency in the pom.xml: Of course, we can find the latest version of the commons-codecon Maven Central. The main API is the org.apache.commons.codec.binary.Base64class. We can initialize it with various constructors: 1. Base64(boolean urlSafe)creates the Base64 API by controlling the URL-safe mode (on o...
Sometimes, we need to convert a String to a byte. The simplest way is to use the String getBytes()method: We can provide encoding as well and not depend on default encoding. As a result, it’s system-dependent: If our String is Base64 encoded, we can use the Base64 decoder: We can also use the DatatypeConverter parseBase64Binary() method: Finally, w...
This article explained the basics of how to do Base64 encoding and decoding in Java. We used the standard Java API and Apache Commons. Finally, there are a few other APIs that provide similar functionality: jakarta.xml.bind.DataTypeConverter with printHexBinary and parseBase64Binary. Code snippets can be found over on GitHub.
Jan 31, 2024 · Base64 encoding allows encoding binary data as text strings for safe transport, at the cost of larger data size. It is commonly used when there is a need to encode binary data that needs to be stored or transferred via media that are designed to deal with textual data (like transporting images inside an XML, JSON document, etc.).
Sep 13, 2024 · NPM(Node Package Manager) is a package manager of Node.js packages. There is an NPM package called arraybuffer-to-string used to decode array buffers in actual strings. The package not only converts the buffer to 'utf8' string but also it converts the buffer to many forms like base64 encoded string, a hex-encoded string that we use in many contexts
This buffer is then passed to the ToBase64String(Byte[]) method to create a UUencoded (base-64) string. It then calls the FromBase64String(String) method to decode the UUencoded string, and calls the BitConverter.ToInt32 method to convert each set of four bytes (the size of a 32-bit integer) to an integer. The output from the example shows that ...
Oct 13, 2021 · Figure 6: Decoding a four-character group from a Base64 string, and the string has no padding equal signs. For example, for the partition \texttt{\{bXIu\}} as seen in Figure 6, the second character \texttt{X} has an offset of 23 (or binary value \texttt{0x17} ) in the Base64 character array.
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How Base64 Decoding Works. We first present a simplified infographic on Base64 decoding, and then explain the process in a bit more detail below. Here’s a detailed explanation of how the Base64 decoding algorithm works: Remove Padding: If the Base64-encoded string has padding characters (‘=’), remove them. Padding characters are added to ...
