方式一
1、实体类
2、服务类
- public class Person {
- private int age;
- private String name;
- public Person(int age, String name) {
- super();
- this.age = age;
- this.name = name;
- }
- @Override
- public String toString() {
- return "Person [age=" + age + ", name=" + name + "]";
- }
- public int getAge() {
- return age;
- }
- public void setAge(int age) {
- this.age = age;
- }
- public String getName() {
- return name;
- }
- public void setName(String name) {
- this.name = name;
- }
- public Person() {
- // TODO Auto-generated constructor stub
- }
- }
- public class JsonList {
- public JsonList() {
- // TODO Auto-generated constructor stub
- }
- public static List<Person> getList() {
- List<Person> list = new ArrayList<Person>();
- list.add(new Person(1002,"李四2"));
- list.add(new Person(1003,"李四3"));
- list.add(new Person(1001,"李四1"));
- return list;
- }
- public static Person getPerson(){
- return new Person(1002,"李四2");
- }
- }
方式二
- import net.sf.json.JSON;
- import net.sf.json.JSONArray;
- import net.sf.json.JSONObject;
- import net.sf.json.JSONSerializer;
- public class JsonTools {
- public JsonTools() {
- // TODO Auto-generated constructor stub
- }
- public static String getString(Person person) {
- JSON json = JSONSerializer.toJSON(JsonList.getPerson());
- return json.toString();
- }
- /**
- *
- * @param msgString
- * @return
- */
- public static Person getPerson(String msgString) {
- Person person = new Person();
- JSONArray array = new JSONArray();
- array.add(msgString);
- JSONObject obj = array.getJSONObject(0);
- // System.out.println(obj.get("age"));
- // System.out.println(obj.get("name"));
- person.setAge(obj.getInt("age"));
- person.setName(obj.getString("name"));
- return person;
- }
- public static String getListString(List<Person> listPersons) {
- JSON json = JSONSerializer.toJSON(listPersons);
- return json.toString();
- }
- /**
- * 将一个json格式的字符串转换成行对应的对象
- * @param str
- * @return
- */
- public static List<Person> getPersons(String str) {
- List<Person> list = new ArrayList<Person>();
- JSONArray array = new JSONArray();
- array.add(str);
- JSONArray array2 = array.getJSONArray(0);
- for (int i = 0; i <array2.size(); i++) {
- JSONObject jsonObject = array2.getJSONObject(i);
- Person person = new Person();
- person.setAge(jsonObject.getInt("age"));
- person.setName(jsonObject.getString("name"));
- list.add(person);
- }
- return list;
- }
- }
1、实体类
2、服务类
- public class Person {
- private int age;
- private String name;
- public Person(int age, String name) {
- super();
- this.age = age;
- this.name = name;
- }
- @Override
- public String toString() {
- return "Person [age=" + age + ", name=" + name + "]";
- }
- public int getAge() {
- return age;
- }
- public void setAge(int age) {
- this.age = age;
- }
- public String getName() {
- return name;
- }
- public void setName(String name) {
- this.name = name;
- }
- public Person() {
- // TODO Auto-generated constructor stub
- }
- }
- public class JsonList {
- public JsonList() {
- // TODO Auto-generated constructor stub
- }
- public static List<Person> getList() {
- List<Person> list = new ArrayList<Person>();
- list.add(new Person(1002,"李四2"));
- list.add(new Person(1003,"李四3"));
- list.add(new Person(1001,"李四1"));
- return list;
- }
- public static Person getPerson(){
- return new Person(1002,"李四2");
- }
- }
方式三
- import net.sf.json.JSON;
- import net.sf.json.JSONArray;
- import net.sf.json.JSONObject;
- import net.sf.json.JSONSerializer;
- public class JsonTools {
- public JsonTools() {
- // TODO Auto-generated constructor stub
- }
- public static String getString(Person person) {
- JSON json = JSONSerializer.toJSON(JsonList.getPerson());
- return json.toString();
- }
- /**
- *
- * @param msgString
- * @return
- */
- public static Person getPerson(String msgString) {
- Person person = new Person();
- JSONArray array = new JSONArray();
- array.add(msgString);
- JSONObject obj = array.getJSONObject(0);
- // System.out.println(obj.get("age"));
- // System.out.println(obj.get("name"));
- person.setAge(obj.getInt("age"));
- person.setName(obj.getString("name"));
- return person;
- }
- public static String getListString(List<Person> listPersons) {
- JSON json = JSONSerializer.toJSON(listPersons);
- return json.toString();
- }
- /**
- * 将一个json格式的字符串转换成行对应的对象
- * @param str
- * @return
- */
- public static List<Person> getPersons(String str) {
- List<Person> list = new ArrayList<Person>();
- JSONArray array = new JSONArray();
- array.add(str);
- JSONArray array2 = array.getJSONArray(0);
- for (int i = 0; i <array2.size(); i++) {
- JSONObject jsonObject = array2.getJSONObject(i);
- Person person = new Person();
- person.setAge(jsonObject.getInt("age"));
- person.setName(jsonObject.getString("name"));
- list.add(person);
- }
- return list;
- }
- }
1、实体类
2、服务类
- public class Person {
- private String name;
- private int age;
- private String address;
- public String getName() {
- return name;
- }
- public Person(String name, int age, String address) {
- super();
- this.name = name;
- this.age = age;
- this.address = address;
- }
- @Override
- public String toString() {
- return "Person [name=" + name + ", age=" + age + ", address=" + address
- + "]";
- }
- public void setName(String name) {
- this.name = name;
- }
- public int getAge() {
- return age;
- }
- public void setAge(int age) {
- this.age = age;
- }
- public String getAddress() {
- return address;
- }
- public void setAddress(String address) {
- this.address = address;
- }
- public Person() {
- // TODO Auto-generated constructor stub
- }
- }
方式四
- import com.android.domain.Person;
- import com.google.gson.Gson;
- import com.google.gson.reflect.TypeToken;
- public class GsonTools {
- public GsonTools() {
- // TODO Auto-generated constructor stub
- }
- public static String createGsonString(Object object) {
- Gson gson = new Gson();
- String gsonString = gson.toJson(object);
- return gsonString;
- }
- public static <T> T changeGsonToBean(String gsonString, Class<T> cls) {
- Gson gson = new Gson();
- T t = gson.fromJson(gsonString, cls);
- return t;
- }
- public static <T> List<T> changeGsonToList(String gsonString, Class<T> cls) {
- Gson gson = new Gson();
- List<T> list_person = gson.fromJson(gsonString,
- new TypeToken<List<T>>() {
- }.getType());
- return list_person;
- }
- public static List<Map<String, Object>> changeGsonToListMaps(String gsonString) {
- List<Map<String, Object>> list = null;
- Gson gson = new Gson();
- list = gson.fromJson(gsonString,
- new TypeToken<List<Map<String, Object>>>() {
- }.getType());
- return list;
- }
- }
1、实体类
- public class Person {
- private String name;
- private int age;
- private String address;
- public String getName() {
- return name;
- }
- public Person(String name, int age, String address) {
- super();
- this.name = name;
- this.age = age;
- this.address = address;
- }
- @Override
- public String toString() {
- return "Person [name=" + name + ", age=" + age + ", address=" + address
- + "]";
- }
- public void setName(String name) {
- this.name = name;
- }
- public int getAge() {
- return age;
- }
- public void setAge(int age) {
- this.age = age;
- }
- public String getAddress() {
- return address;
- }
- public void setAddress(String address) {
- this.address = address;
- }
- public Person() {
- // TODO Auto-generated constructor stub
- }
- }
2、服务类
- import com.alibaba.fastjson.JSON;
- import com.alibaba.fastjson.TypeReference;
- import com.alibaba.fastjson.asm.Type;
- import com.alibaba.fastjson.util.TypeUtils;
- public class FastJsonTools {
- public FastJsonTools() {
- // TODO Auto-generated constructor stub
- }
- public static String createJsonString(Object object) {
- String jsonString = JSON.toJSONString(object);
- return jsonString;
- }
- public static <T> T createJsonBean(String jsonString, Class<T> cls) {
- T t = JSON.parseObject(jsonString, cls);
- return t;
- }
- public static <T> List<T> createJsonToListBean(String jsonString,
- Class<T> cls) {
- List<T> list = null;
- list = JSON.parseArray(jsonString, cls);
- return list;
- }
- /**
- * @param jsonString
- * @return
- */
- public static List<Map<String, Object>> createJsonToListMap(
- String jsonString) {
- List<Map<String, Object>> list2 = JSON.parseObject(jsonString,
- new TypeReference<List<Map<String, Object>>>() {
- });
- return list2;
- }
- /**
- * @param args
- */
- public static void main(String[] args) {
- // TODO Auto-generated method stub
- // Person person1 = new Person("张三1", 24, "北京1");
- // Person person2 = new Person("张三2", 23, "北京2");
- // List<Person> list = new ArrayList<Person>();
- // list.add(person1);
- // list.add(person2);
- List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
- Map<String, Object> map = new HashMap<String, Object>();
- map.put("name", "jack");
- map.put("age", 23);
- Map<String, Object> map2 = new HashMap<String, Object>();
- map2.put("name", "rose");
- map2.put("age", 24);
- list.add(map);
- list.add(map2);
- String jsonString = JSON.toJSONString(list);
- System.out.println(jsonString);
- // JSON.parseArray(arg0, arg1)
- List<Map<String, Object>> list2 = JSON.parseObject(jsonString,
- new TypeReference<List<Map<String, Object>>>() {
- });
- // List<Person> lists = JSON.parseArray(arg0, arg1);
- System.out.println(list2.toString());
- }
- }
来源: http://www.phpxs.com/code/1001978/