map--->json

http://tech.it168.com/a2011/0628/1210/000001210209_4.shtml

/**
* <b>function:</b>转Java Map对象到JSON
* @author hoojo
* @createDate Nov 28, 2010 2:37:35 PM
*/
@Test
public void writeMap2JSON() {
Map<String, Object> map = new HashMap<String, Object>();
map.put("A", bean);

bean.setName("jack");
map.put("B", bean);
map.put("name", "json");
map.put("bool", Boolean.TRUE);
map.put("int", new Integer(1));
map.put("arr", new String[] { "a", "b" });
map.put("func", "function(i){ return this.arr[i]; }"); 
fail("==============Java Map >>> JSON Object==================");
fail(JSONObject.fromObject(map).toString());

/*{"arr":["a","b"],"A":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"int":1,
"B":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"name":"json",
"func":function(i){ returnthis.arr[i]; },"bool":true}*/

fail("==============Java Map >>> JSON Array ==================");
fail(JSONArray.fromObject(map).toString());
fail("==============Java Map >>> JSON Object==================");
fail(JSONSerializer.toJSON(map).toString());
}

 运行结果：

==============Java Map >>> JSON Object==================
{"arr":["a","b"],"A":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"int":1,
"B":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"name":"json",
"func":function(i){ return this.arr[i]; },"bool":true}
==============Java Map >>> JSON Array ==================
[{"arr":["a","b"],"A":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"int":1,
"B":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"name":"json",
"func":function(i){ return this.arr[i]; },"bool":true}]
==============Java Map >>> JSON Object==================
{"arr":["a","b"],"A":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"int":1,
"B":{"address":"address","birthday":{"birthday":"2010-11-22"},"email":"email","id":1,"name":"jack"},"name":"json",
"func":function(i){ return this.arr[i]; },"bool":true}