将Java对象转换为JSON? [英] Converting Java Object to JSON?
问题描述
我正在使用struts2 for Action和jquery for UI ...
I am using struts2 for Action and jquery for UI ...
我想知道如何将Map对象转换为JSON对象并将其发送回UI ,
I want to know how to convert a Map object to JSON object and send it back to UI ,
现在我可以在JSP页面中打印普通的Java Map对象:
Now am able to print it in JSP page the normal java Map object :
{71=Heart XXX, 76=No Heart YYY}
但我想要它是这样的:
{71:Heart XXX, 76:No Heart YYY}
我将如何实现这一目标....?
How will i achieve this .... ?
推荐答案
尝试 Gson :
Gson gson = new Gson();
String json = gson.toJson(yourMap);
我不建议将这种代码放入JSP中。像这样的东西应该存在于像Servlet或Action类这样的控制器中。
I wouldn't recommend putting this kind of code into a JSP, though. Things like these should live in a controller like a Servlet or Action class.
你也绝对不希望输出为:
You also most definitely don't want the output to be:
{71:Heart XXX, 76:No Heart YYY}
,而是适当的JSON(引用的名称,引用的字符串值):
but rather proper JSON like (quoted names, quoted string values):
{"71":"Heart XXX", "76":"No Heart YYY"}
Gson将输出后者。
Gson will output the latter.
这篇关于将Java对象转换为JSON?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!