Json 生成与解析
JSON常用与服务器进行数据交互，JSON中“{}”表示JSONObject，“[]”表示JSONArray
如下json数据：
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{
"singers"
:[
2
{
"id"
:
"02"
,
"name"
:
"tom"
,
"gender"
:
"男"
,
"tel"
:[
"123456"
,
"789012"
]},
3
{
"id"
:
"03"
,
"name"
:
"jerry"
,
"gender"
:
"男"
,
"tel"
:[
"899999"
,
"666666"
]},
4
{
"id"
:
"04"
,
"name"
:
"jim"
,
"gender"
:
"男"
,
"tel"
:[
"7777"
,
"5555"
]},{
"id"
:
"05"
,
"name"
:
"lily"
,
"gender"
:
"女"
,
"tel"
:[
"222222"
,
"111111"
]}
5
]}
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生成json数据代码：
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public
String buildJson()
throws
JSONException {
JSONObject persons =
new
JSONObject();
JSONArray personArr =
new
JSONArray();
JSONObject person =
new
JSONObject();
person.put(
"id"
,
"02"
);
person.put(
"name"
,
"tom"
);
person.put(
"gender"
,
"男"
);
JSONArray tel =
new
JSONArray();
tel.put(
"123456"
);
tel.put(
"789012"
);
person.put(
"tel"
, tel);
personArr.put(person);
JSONObject person2 =
new
JSONObject();
person2.put(
"id"
,
"03"
);
person2.put(
"name"
,
"jerry"
);
person2.put(
"gender"
,
"男"
);
JSONArray tel2 =
new
JSONArray();
tel2.put(
"899999"
);
tel2.put(
"666666"
);
person2.put(
"tel"
, tel2);
personArr.put(person2);
JSONObject person3 =
new
JSONObject();
person3.put(
"id"
,
"04"
);
person3.put(
"name"
,
"jim"
);
person3.put(
"gender"
,
"男"
);
JSONArray tel3 =
new
JSONArray();
tel3.put(
"7777"
);
tel3.put(
"5555"
);
person3.put(
"tel"
, tel3);
personArr.put(person3);
JSONObject person4 =
new
JSONObject();
person4.put(
"id"
,
"05"
);
person4.put(
"name"
,
"lily"
);
person4.put(
"gender"
,
"女"
);
JSONArray tel4 =
new
JSONArray();
tel4.put(
"222222"
);
tel4.put(
"111111"
);
person4.put(
"tel"
, tel4);
personArr.put(person4);
persons.put(
"singers"
, personArr);
return
persons.toString();
}
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解析json数据代码：
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private
void
parseJsonMulti(String strResult) {
try
{
JSONArray jsonObjs =
new
JSONObject(strResult).getJSONArray(
"singers"
);
String s =
""
;
for
(
int
i =
0
; i < jsonObjs.length(); i++) {
JSONObject jsonObj = ((JSONObject) jsonObjs.opt(i));
int
id = jsonObj.getInt(
"id"
);
String name = jsonObj.getString(
"name"
);
String gender = jsonObj.getString(
"gender"
);
s +=
"ID号"
+ id +
", 姓名："
+ name +
",性别："
+ gender +
"，电话："
;
JSONArray tel = jsonObj.getJSONArray(
"tel"
);
for
(
int
j =
0
; j < tel.length(); j++) {
s += tel.getString(j)+
"/"
;
}
s +=
"\n"
;
}
tv.setText(s);
}
catch
(JSONException e) {
e.printStackTrace();
}
}
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