从Perl中的JSON-String解码哈希 [英] Decoding Hash from JSON-String in Perl
本文介绍了从Perl中的JSON-String解码哈希的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
为什么这不起作用?
my $myHashEncoded = encode_json \%myHash;
my %myHashDecoded = decode_json($myHashEncoded);
我得到了错误:
Reference found where even-sized list expected at ...
所以我将其更改为:
my $myHashEncoded = encode_json \%myHash;
my $myHashDecoded = decode_json($enableInputEncoded);
但是显然%myHash
与$myHashDecoded
不同.
如何从JSON字符串恢复适当的哈希?
How do I restore a proper hash from the JSON string?
推荐答案
假设您使用的是JSON.pm,则文档说:
Assuming you are using JSON.pm, the documentation says:
encode_json的反义词:需要一个UTF-8(二进制)字符串,并尝试将其解析为UTF-8编码的JSON文本,并返回生成的引用.
因此,您要取回所放入的内容.您要插入一个hashref,而您又要返回一个hashref.
So you are getting back what you put in. You're putting in a hashref and you're getting a hashref back.
如果您想要常规散列,则只需像其他任何hashref一样取消引用它即可:
If you want a regular hash, then you just dereference it as you would any other hashref:
my $myHashRefDecoded = decode_json($myHashEncoded);
my %myHashDecoded = %$myHashRefDecoded;
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