[英]Convert Base64 String to String Array
我正在使用 request.getParameter 并获取此值:
[
"data:image/jpeg;base64,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",
"data:image/jpeg;base64,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"
]
如何将其转换为数组?
当我使用request.getParameterValues("jsondata");
我得到这个值[Ljava.lang.String;@8892fd8
,这不是预期的。
jsondata
值是 JSON 文本。 它以[
开头,这意味着它是一个 JSON 数组。
要处理它,您应该使用 JSON 解析器。 请参阅如何在 Java 中解析 JSON 。
一旦你解析了它,你应该有一个String[]
或一个List<String>
,有 2 个值。
两个值都以data:image/jpeg;base64,
开头data:image/jpeg;base64,
后跟 Base-64 编码的二进制数据(JPEG 图像)。
假设您有 Java 8 或更高版本,请使用Base64
类解码为byte[]
。
您现在拥有 2 个 JPEG 图像,采用 2 个字节数组的形式。
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