我使用 struts2 做 Action 和 jquery 做 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 ,
现在可以在 JSP 页面中打印普通的 java Map 对象了:
Now am able to print it in JSP page the normal java Map object :
{71=Heart XXX, 76=No Heart YYY}
但我希望它是这样的:
{71:Heart XXX, 76:No Heart YYY}
我将如何实现这一目标....?
How will i achieve this .... ?
试试 Gson:
Gson gson = new Gson();
String json = gson.toJson(yourMap);
不过,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是:
You also most definitely don't want the output to be:
{71:Heart XXX, 76:No Heart YYY}
而是像正确的 JSON(带引号的名称,带引号的字符串值):
but rather proper JSON like (quoted names, quoted string values):
{"71":"Heart XXX", "76":"No Heart YYY"}
Gson 会输出后者.
Gson will output the latter.
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