Java 编码 和JSON

1.编码

序列化（urlencode编码）：经过urlencode编码

    　　  String a="[{"clubNo":"10000002","clubType":"1"},{"clubNo":"10000003","clubType":"4"},{"clubNo":"10000004","clubType":"3"}]";

　　　   将字符串a经过urlencode编码：  a = java.net.URLEncoder.encode(a,"utf-8");

反序列化（urldecode解码）：

String a="%5b%7b%22clubNo%22%3a%2210000002%22%2c%22clubType%22%3a%221%22%7d%2c%7b%22clubNo%22%3a%2210000003%22%2c%22clubType%22%3a%224%22%7d%2c%7b%22clubNo%22%3a%2210000004%22%2c%22clubType%22%3a%223%22%7d%5d";

 a=java.net.URLDecoder.decode(a,"UTF-8");

2.JSON

（1）将多个字符串转换成json数据：

String a="ert";
String c="kkkk";
JSONObject json=new JSONObject();
json.put("a", a);
json.put("c", c);
System.out.println(json.toJSONString());

{“a”:"ert","c":"kkkk"}

（2）解析json型的字符串：

String datas="{"imei":"358732036143010","version":"2.3","apk":[{"appname":"SyncKey","packagename":"com.discovery.synckey"},{"appname":"DbTest","packagename":"com.discovery.synckey"},{"appname":"AppUpdate","packagename":"com.discovery.synckey"}]}";

JSONObject reqJson=JSONObject.parseObject(datas);

String imei=reqJson.getString("imei");

String apk=reqJson.getString("apk");//json型集合

JSONArray parseArry =JSONObject.parseArray(apk);

Iterator<Object> iterator =parseArry.iterator();

while(iterator.hasNext())
{
　　JSONObject object =(JSONObject)iterator.next();

       String  appname =(String)object.getString("appname")

}

（3）.

    原数据

datas:  {"hma17-kme-180425dntn":"1531@1531@3","ym800_7.5_18031521":"745@744@369"}
解析后的数据
{"maxPage":2,"list":[{"name":"hma17-kme-180425dntn","num":"1531","actnum":"1531","weeknum":"3"},{"name":"ym800_7.5_18031521","num":"745","actnum":"744","weeknum":"369"}]}

JSONObject reqJson=JSON.parseObject(datas);

for(Map.Entry<String, Object> entry:reqJson.entrySet()){
　　System.out.println("~!!!!!!!!!!!!!!!!!!!!!");
　　System.out.println(entry.getKey());
　　System.out.println(entry.getValue());

　　String c=(String)entry.getValue();
　　String [] res=c.split("@");

　　String name=entry.getKey();

　　String num=res[0];

　　String actNum=res[1];

　　String  weekNum=res[2];

}

（4）

String  devices="hXqLTLv9@SyJ4KieG@SNXYQLyR";

String [] res=devices.split("@");

List a=new JSONArray();

　　for(int i=1;i<res.length;i++)
　　{
              a.add(res[i]);
       }
    （5）

原数据

result: ["BuildInfo","t1a_v1.3_build201805230930","IMEI","358732036575930","buildModel","AIINCART1","cpuID","M186MY50SVPL13","cpuInfo","mt6737h:3:0xd03:0x0:7:0x41","deviceSN","0123456789ABCDEF","sysFeature","24","iccid","89861117147550357527"]

解析后的数据

　　{

　　　　"data": {
　　　　　　　　"sysFeature": "24",
　　　　　　　　"iccid": "89861117147550357527",
　　　　　　　　"cpuID": "M186MY50SVPL13",
　　　　　　　　"BuildInfo": "t1a_v1.3_build201805230930",
　　　　　　　　"IMEI": "358732036575930",
　　　　　　　　"buildModel": "AIINCART1",
　　　　　　　　"cpuInfo": "mt6737h:3:0xd03:0x0:7:0x41",
　　　　　　　　"deviceSN": "0123456789ABCDEF"
　　　　　　　},
　　　　"errorCode": "0000",
　　　　"errorMsg": "成功获取设备信息"
　　}

result = result.substring(1, result.length() - 1);
        System.out.println("输出结果"+result);
         String deviceArray[] = result.split(",");
         List<String> deviceInfo = Arrays.asList(deviceArray);
         for (int i = 0; i < deviceInfo.size(); i += 2) {
             String str = deviceInfo.get(i);
            
                if (str.contains("BuildInfo")) {
                  BuildInfo=deviceInfo.get(i + 1).substring(1, deviceInfo.get(i + 1).length() - 1);
                  } else if (str.contains("IMEI")) {
                 IMEI=deviceInfo.get(i + 1).substring(1, deviceInfo.get(i + 1).length() - 1);
                  } else if (str.contains("buildModel")) {
                  buildModel=deviceInfo.get(i + 1).substring(1, deviceInfo.get(i + 1).length() - 1);
                  } else if (str.contains("cpuID")) {
                   cpuID=deviceInfo.get(i + 1).substring(1, deviceInfo.get(i + 1).length() - 1);
                  } else if (str.contains("cpuInfo")) {
                  cpuInfo=deviceInfo.get(i + 1).substring(1, deviceInfo.get(i + 1).length() - 1);
                  } else if (str.contains("deviceSN")) {
                   deviceSN=deviceInfo.get(i + 1).substring(1, deviceInfo.get(i + 1).length() - 1);
                  } else if (str.contains("sysFeature")) {
                     sysFeature=deviceInfo.get(i + 1).substring(1, deviceInfo.get(i + 1).length() - 1);
                  } else if (str.contains("iccid")) {
                     iccid=deviceInfo.get(i + 1).substring(1, deviceInfo.get(i + 1).length() - 1);
                  }
             System.out.println("*******"+str);
         }    
         errorCode="0000";
         errorMsg="成功获取设备信息";
        }

JSONObject json=new JSONObject();
         JSONObject out=new JSONObject();
         out.put("BuildInfo", BuildInfo);
         out.put("IMEI", IMEI);
         out.put("buildModel", buildModel);
         out.put("cpuID", cpuID);
         out.put("cpuInfo", cpuInfo);
         out.put("deviceSN", deviceSN);
         out.put("sysFeature", sysFeature);
         out.put("iccid", iccid);
         json.put("errorCode", errorCode);
         json.put("errorMsg", errorMsg);
         json.put("data", out);

3.字符串不区分大小写进行比较

 if(res[i].toLowerCase().contains(deviceId.toLowerCase())) //不区分大小写比较是否相等

club.replaceAll(""""", """); //去掉字符串club中的

a=a.replace(""", "");//去掉字符串a中的"

4.访问三方的接口

Maven项目中要加依赖：

<dependency>
　　<groupId>com.bladejava</groupId>
　　<artifactId>blade-kit</artifactId>
　　<version>1.3.4</version>
</dependency>

（1）get

url="http://"+ipNum+"/wxServer/GetOnlineDeviceID?num=ALL";

HttpRequest req=HttpRequest.get(url);

String content=req.body();  //三方接口返回的内容

（2）post请求

//openIdUrl  具体的url

HttpRequest request = HttpRequest.post(openIdUrl).contentType("application/json;charset=utf-8");  
String res = request.body();  //三方接口返回的内容

JSONObject obj = JSON.parseObject(res);

String access_token=obj.getString("access_token"); //三方接口中具体某个字段值

（3）post请求带有数据型访问三方接口

        //UNURL  具体的url

         String xml="";

       HttpRequest request = HttpRequest.post(UNURL).contentType("application/json;charset=utf-8").send(xml);
       returnxml=request.body();