实现代码:
import
net.sf.json.JSONArray;
import
net.sf.json.JSONObject;
public
class
JsonTest {
public
static
void
main(String[] args) {
String joStr =
"{name:"张三",age:"20"}"
;
//将json字符串转化为JSONObject
JSONObject jsonObject = JSONObject.fromObject(joStr);
//通过getString("")分别取出里面的信息
String name = jsonObject.getString(
"name"
);
String age = jsonObject.getString(
"age"
);
//输出 张三 20
System.out.println(name+
" "
+age);
String jaStr =
"[{user:{name:"张三",age:"20"}},{score:{yuwen:"80",shuxue:"90"}}]"
;
//将jsonArray字符串转化为JSONArray
JSONArray jsonArray = JSONArray.fromObject(jaStr);
//取出数组第一个元素
JSONObject jUser = jsonArray.getJSONObject(
0
).getJSONObject(
"user"
);
//取出第一个元素的信息,并且转化为JSONObject
String name2 = jUser.getString(
"name"
);
String age2 = jUser.getString(
"age"
);
//输出 张三 20
System.out.println(name2+
" "
+age2);
//取出数组第二个元素,并且转化为JSONObject
JSONObject jScore = jsonArray.getJSONObject(
1
).getJSONObject(
"score"
);
//取出第二个元素的信息
String yuwen = jScore.getString(
"yuwen"
);
String shuxue = jScore.getString(
"shuxue"
);
//输出 80 90
System.out.println(yuwen+
" "
+shuxue);
}