[Article 3rd] converts an array to JSON data through Json-Lib, json-libjson

[Article 3rd] converts an array to JSON data through Json-Lib, json-libjson

Package ivyy.taobao.com. domain. jsonlib; import ivyy.taobao.com. entity. address; import java. util. hashMap; import java. util. iterator; import java. util. list; import java. util. map; import net. sf. json. JSONArray; import net. sf. json. JSONObject;/*** @ DEMO: json * @ Java: ArrayToJson. java * @ Date: 5:17:19 * @ Author: liangjilong * @ Email: jilongliang@sina.com * @ Weibo: http://weibo.com/jilongliang * @ Version: 1.0 * @ De Convert: converts an array to JSON data using Json-Lib */public class ArrayToJson {/*** @ param args */public static void main (String [] args) throws Exception {// getArrayToJson (); getArrayToJsonByMap ();} /*** convert the array to Json data through ByJSONLib * @ param url * @ throws Exception */private static void getArrayToJson () throws Exception {Address address = new Address (); address. setProvince ("Guangdong Province"); address. setCity ("yunfu City"); address. setDistrict ("Cloud City Dongsheng fabric "); address. setWeibo ("http://weibo.com/resourceljl"); JSONArray jsonArr = JSONArray. fromObject (address); // converts an object to a Json Object List <Address> lists = JSONArray. toList (jsonArr, Address. class); // converts an object Json array to a Json array for (Address obj: lists) {System. out. println (obj. getProvince (); System. out. println (obj. getCity (); System. out. println (obj. getDistrict (); System. out. println (obj. getWeibo ();}/*** use Map Convert the array to JSON data through Json-Lib * @ param url * @ throws Exception */private static void getArrayToJsonByMap () throws Exception {Address address = new Address (); address. setProvince ("Guangdong Province"); address. setCity ("yunfu City"); address. setDistrict ("Dongcheng District Dongsheng fabric"); address. setWeibo ("http://weibo.com/resourceljl"); JSONArray jsonArr = JSONArray. fromObject (address); // converts an object to a Json object // You can also perform Map <String, Class <Address> map = new HashMap <Str Ing, Class <Address> (); map. put ("address", Address. class); List <Address> lists = JSONArray. toList (jsonArr, Address. class, map); // converts an object Json array to a Json array System. out. println ("----------------------- method 1 -----------------------"); // ------------------------- method 1 --------------------- for (Address obj: lists) {System. out. println (obj. getProvince (); // obtain the provincial data System. out. println (obj. getCity (); // obtain the city data System. ou T. println (obj. getDistrict (); // obtain the sub-district data System. out. println (obj. getWeibo (); // get Weibo data} System. out. println ("----------------------- method 2 -----------------------"); // ------------------------- method 2 ----------------------- for (Iterator iterator = lists. iterator (); iterator. hasNext ();) {Address obj = (Address) iterator. next (); System. out. println (obj. getProvince (); System. out. println (obj. getCity (); System. out. Println (obj. getDistrict (); System. out. println (obj. getWeibo ();} System. out. println ("----------------------- method 3 -----------------------"); // ------------------------- method 3 --------------------- for (int I = 0; I <lists. size (); I ++) {JSONObject obj = JSONObject. fromObject (lists. get (I); System. out. println (obj. get ("province"); System. out. println (obj. get ("city"); System. out. println (obj. get ("district" ); System. out. println (obj. get ("weibo");} System. out. println ("----------------------- Method 4 -----------------------"); Iterator <Address> iator = lists. iterator (); do {Address obj = istrap. next (); System. out. println (obj. getProvince (); System. out. println (obj. getCity (); System. out. println (obj. getDistrict (); System. out. println (obj. getWeibo ();} while (iworkflow. hasNext (); System. out. println ("--------------------- -- Method 5 ----------------------- "); Iterator <Address> it = lists. iterator (); // obtain the value when the value must exist. If the value is not set, an error occurs while (! It. hasNext () {Address obj = iworkflow. next (); if (obj! = Null) System. out. println (obj. getProvince (); System. out. println (obj. getCity (); System. out. println (obj. getDistrict (); System. out. println (obj. getWeibo ());}}}

Package ivyy.taobao.com. entity; import java. io. serializable; import com. google. gson. annotations. expose;/*** Gson gson = new GsonBuilder (). excludeFieldsWithoutExposeAnnotation (). create (); * create a Gson object. attributes without @ Expose annotation will not be serialized * serialize serialization default true * deserialize deserialization default true * @ author liangjilong * @ Email: jilongliang@sina.com */public class Address implements Serializable {@ Expose (serialize = false) // serialization/Address class has serialized private int id; @ Expose (deserialize = false) // deserialize private String country; // country private String province; // province private String city; // city private String street; // street private String district; // region private String cityCode; // zip code private String streetNumber; // Street number private String weibo; // weibo public Address () {} public Address (int id, string country) {this. id = id; this. country = country;} public String getCityCode () {return cityCode;} public void setCityCode (String cityCode) {this. cityCode = cityCode;} public String getStreetNumber () {return streetNumber;} public void setStreetNumber (String streetNumber) {this. streetNumber = streetNumber;} public String getStreet () {return street;} public void setStreet (String street) {this. street = street;} public String getDistrict () {return district;} public void setDistrict (String district) {this. district = district;} public String getCity () {return city;} public void setCity (String city) {this. city = city;} public String getProvince () {return province;} public void setProvince (String province) {this. province = province;} public int getId () {return id;} public void setId (int id) {this. id = id;} public String getCountry () {return country;} public void setCountry (String country) {this. country = country;} public String getWeibo () {return weibo;} public void setWeibo (String weibo) {this. weibo = weibo ;}}