实现api返回json数据并在调用api时处理json数据

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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1946898935ModelAndView 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)@ResponseBodypublic 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;}

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