将Json转换为地图 [英] Convert Json to Map
问题描述
将JSON代码转换为以下内容的最佳方法是:
{
在一个Java Map中,一个键是(field1,field2),这些字段的值是(value1,value2)。pre>
data:
{
field1:value1,
field2:value2
}
}
。
有什么想法吗?我应该使用Json-lib吗?或者更好,如果我写我自己的解析器?
提前感谢。解决方案我希望你在开始编写自己的解析器。 : - )
对于这样一个简单的映射,大多数工具来自 http:/ /json.org (section java)会工作。
对于其中一个(Jackson, http://wiki.fasterxml.com/JacksonInFiveMinutes ),你可以:HashMap< String,Object> result =
new ObjectMapper()。readValue(JSON_SOURCE,HashMap.class);
(其中JSON_SOURCE是File,input stream,reader或json content String)
What is the best way to convert a JSON code as this:
{ "data" : { "field1" : "value1", "field2" : "value2" } }
in a Java Map in which one the keys are (field1, field2) and the values for those fields are (value1, value2).
Any ideas? Should I use Json-lib for that? Or better if I write my own parser? Thanks in advance.
解决方案I hope you were joking about writing your own parser. :-)
For such a simple mapping, most tools from http://json.org (section java) would work. For one of them (Jackson, http://wiki.fasterxml.com/JacksonInFiveMinutes), you'd do:
HashMap<String,Object> result = new ObjectMapper().readValue(JSON_SOURCE, HashMap.class);
(where JSON_SOURCE is a File, input stream, reader, or json content String)
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