json数据如下
"name": [
{
"age": 25,
"height": 160,
"weight": 100,
"email": "1946898935"
},
{
"age": 26,
"height": 178,
"weight": 140,
"email": "1234567"
}
],
"address": [
{
"addressname": "福州市"
},
{
"addressname": "厦门市"
}
]
}下面的代码是访问一个页面并同时调用一个api；
@RequestMapping("/myapitest")//url映射地址
public ModelAndView apitest(){
/*
*这是一个页面访问urlmapping
*
*
*/
// System.out.println(mysendGet("http://localhost:8080/weidaiTest/testapi","param=p"));
String s = mysendGet("http://localhost:8080/weidaiTest/testapi","param=p");//通过mysendGet函数调用接口
JSONObject json = JSONObject.fromObject(s);//将字符串转化为json对象
JSONArray jary = json.getJSONArray("name");//去到name对应的数组
System.out.println(JSONObject.fromObject(jary.get(0)).get("email"));//数组内部的元素是对象，见上面的ison数据，对应到eamil的1946898935
ModelAndView mv = new ModelAndView("test");//要返回到浏览器的页面
return mv;
}以下是调用接口的函数
public static String mysendGet(String url, String param) {
String result = "";
BufferedReader in = null;
try {
String urlNameString = url + "?" + param;
// System.out.println("请求地址是"+urlNameString);
URL realUrl = new URL(urlNameString);
// 打开和URL之间的连接
URLConnection connection = realUrl.openConnection();
// 设置通用的请求属性
// 建立实际的连接
connection.connect();
// 定义 BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(
connection.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
System.out.println(line);
result+=line;
}
System.out.println("String在mysendget："+result);
System.out.println("JSONObject在mysendget："+JSONObject.fromObject(result));
} catch (Exception e) {
System.out.println("发送GET请求出现异常！" + e);
e.printStackTrace();
}
// 使用finally块来关闭输入流
finally {
try {
if (in != null) {
in.close();
}
} catch (Exception e2) {
e2.printStackTrace();
}
}
return JSONObject.fromObject(result).toString();//可以直接返回result
}
下面是一个极其简易的接口，接口返回的是json格式的字符串
@RequestMapping(value="/testapi",method=RequestMethod.GET)
@ResponseBody
public String testapi(HttpServletRequest req,HttpServletResponse rpon){
/*
*这是一个接口
*
*
*/
// System.out.println("调用了接口testapi并且获取到了参数param="+req.getParameter("param"));
String s = "{\"name\":[{\"age\":25,\"height\":160,\"weight\":100,\"email\":\"1946898935\"},{\"age\":26,\"height\":178,\"weight\":140,\"email\":\"1234567\"}],\"address\":[{\"addressname\":\"福州市\"},{\"addressname\":\"厦门市\"}]}";
//JSONObject json = JSONObject.fromObject(s);
return s;
}
转载请注明原文地址: https://ju.6miu.com/read-668563.html
