java的JsonObject对象提取值方法
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2023-11-27 11:47:58
实例如下所示:
import com.alibaba.fastjson.json;
import com.alibaba.fastjson.jsonarray;...
实例如下所示:
import com.alibaba.fastjson.json; import com.alibaba.fastjson.jsonarray; import com.alibaba.fastjson.jsonobject; import io.swagger.models.auth.in; import java.io.ioexception; import java.security.keymanagementexception; import java.security.nosuchalgorithmexception; import java.util.iterator; /** * created by administrator on 2017/4/21. */ public class test { public static void main(string[] args) throws exception { //第一种格式 /** * [ { "data ": [ { "building_id ": "*** ", "building_num ": "** ", "door_name ": "** ", "electric ": "** ", "room_name ": "** " } ], "success ": true } ] */ string s="[{\"success\":true,\"data\":[{\"building_id\":\"***\",\"building_num\":\"**\",\"room_name\":\"**\",\"door_name\":\"**\",\"electric\":\"**\"}]}]" ; string b= s.substring(0,s.length()-1); string c=b.substring(1, b.length()); system.out.println(b+"b___"); jsonobject jsonx = json.parseobject(c); jsonarray ja = jsonx.getjsonarray("data"); for (int i = 0; i < ja.size(); i++) { jsonobject jo = ja.getjsonobject(i); string building_id = jo.getstring("building_id"); system.out.println(building_id+"building_id>>>>>"); } //第二种格式 /** * [ { "password ": "*1234567890 ", "success ": "true " } ] */ string s="[{\"success\":\"true\",\"password\":\"*1234567890\"}]"; string b= s.substring(0,s.length()-1); string c=b.substring(1, b.length()); system.out.println(c+"c___"); jsonobject reagobj = jsonobject.fromobject(c); string name = reagobj.getstring("password"); system.out.println(name+"name,,,,,,"); string password = jm.getstring("password"); system.out.println(password); system.out.println("看看有没有值"+password); //第三种格式 /** * { "data ": { "access_token ": "5a7040ccf66bafd06acd39b6f61c19230eaba426755509646d6da23ddd9fb206 ", "expires_second ": 36000 }, "rlt_code ": "hh0000 ", "rlt_msg ": "成功 " } */ string res="{\"data\":{\"access_token\":\"5a7040ccf66bafd06acd39b6f61c19230eaba426755509646d6da23ddd9fb206\",\"expires_second\":36000},\"rlt_code\":\"hh0000\",\"rlt_msg\":\"成功\"}"; jsonobject jsonobject= json.parseobject(res); string data = jsonobject.getstring("data"); jsonobject jsondata= json.parseobject(data); string token = jsondata.getstring("access_token"); //第四种格式 /** * { "data ": { "total ":23, "start ":0, "total_page ":3, "rows ": [ { "op_way ": "3 ", "user_mobile ": "15321918571 ", "op_time ":1493881391976, "pwd_no ":30}, { "op_way ": "1 ", "op_time ":1493880995000, "pwd_no ":31} ], "current_page ":1, "page_size ":10 }, "rlt_code ": "hh0000 ", "rlt_msg ": "成功 " } */ string res="{\"data\":{\"total\":23,\"start\":0,\"total_page\":3,\"rows\":[{\"op_way\":\"1\",\"op_time\":1493884964000,\"pwd_no\":31},{\"op_way\":\"3\",\"user_mobile\":\"18518517491\",\"op_time\":1493884615032,\"pwd_no\":30},{\"op_way\":\"3\",\"user_mobile\":\"18518517491\",\"op_time\":1493883836552,\"pwd_no\":30},{\"op_way\":\"1\",\"op_time\":1493883294000,\"pwd_no\":31},{\"op_way\":\"1\",\"op_time\":1493883256000,\"pwd_no\":31},{\"op_way\":\"3\",\"user_mobile\":\"15321918571\",\"op_time\":1493883015371,\"pwd_no\":30},{\"op_way\":\"1\",\"op_time\":1493882007000,\"pwd_no\":31},{\"op_way\":\"3\",\"user_mobile\":\"15321918571\",\"op_time\":1493881498520,\"pwd_no\":30},{\"op_way\":\"3\",\"user_mobile\":\"15321918571\",\"op_time\":1493881391976,\"pwd_no\":30},{\"op_way\":\"1\",\"op_time\":1493880995000,\"pwd_no\":31}],\"current_page\":1,\"page_size\":10},\"rlt_code\":\"hh0000\",\"rlt_msg\":\"成功\"}"; jsonobject jsonobject= json.parseobject(res); string data = jsonobject.getstring("data"); jsonobject jsonobjects= json.parseobject(data); jsonarray ja = jsonobjects.getjsonarray("rows"); for (int i = 0; i < ja.size(); i++) { jsonobject jo = ja.getjsonobject(i); string op_way = jo.getstring("op_way"); string op_time = jo.getstring("op_time"); simpledateformat simpledateformat = new simpledateformat("yyyy-mm-dd hh:mm:ss"); long lt = new long(op_time); date date = new date(lt); res = simpledateformat.format(date); string pwd_no = jo.getstring("pwd_no"); string user_mobile = jo.getstring("user_mobile"); system.out.println(op_way+res+pwd_no+user_mobile+"------------"); } } }
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