Transforming between entity classes and JSON objects

. [Code] Tool class?

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package myUtil;import java.io.IOException;import myProject.Student;import myProject.StudentList;import org.codehaus.jackson.map.ObjectMapper;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;/** * 实体类和JSON对象之间相互转化（依赖包jackson-all-1.7.6.jar、jsoup-1.5.2.jar） * @author wck * */public class JSONUtil {    /**     * 将json转化为实体POJO     * @param jsonStr     * @param obj     * @return     */    public static<T> Object JSONToObj(String jsonStr,Class<T> obj) {        T t = null;        try {            ObjectMapper objectMapper = new ObjectMapper();            t = objectMapper.readValue(jsonStr,                    obj);        } catch (Exception e) {            e.printStackTrace();        }        return t;    }        /**     * 将实体POJO转化为JSON     * @param obj     * @return     * @throws JSONException     * @throws IOException     */    public static<T> JSONObject objectToJson(T obj) throws JSONException, IOException {        ObjectMapper mapper = new ObjectMapper();          // Convert object to JSON string          String jsonStr = "";        try {             jsonStr =  mapper.writeValueAsString(obj);        } catch (IOException e) {            throw e;        }        return new JSONObject(jsonStr);    }            public static void main(String[] args) throws JSONException, IOException {        JSONObject obj = null;        obj = new JSONObject();        obj.put("name", "213");        obj.put("age", 27);        JSONArray array = new JSONArray();        array.put(obj);        obj = new JSONObject();        obj.put("name", "214");        obj.put("age", 28);        array.put(obj);        Student stu = (Student) JSONToObj(obj.toString(), Student.class);        JSONObject objList = new JSONObject();        objList.put("student", array);        System.out.println("objList:"+objList);        StudentList stuList = (StudentList) JSONToObj(objList.toString(), StudentList.class);        System.out.println("student:"+stu);        System.out.println("stuList:"+stuList);        System.out.println("#####################################");        JSONObject getObj = objectToJson(stu);        System.out.println(getObj);    }}

2. [Code] Entity (subclass)?

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package myProject;public class Student {     private String name;        private int age;        //private StudentClass studentClass;        public String getName() {            return name;        }        public void setName(String name) {            this.name = name;        }        public int getAge() {            return age;        }        public void setAge(int age) {            this.age = age;        }        @Override        public String toString() {            return "Student [name=" + name + ", age=" + age + "]";        }}

3. [Code] Entity parent classskip to [1] [2] [3] [Full screen preview]?

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package myProject;import java.util.List;public class StudentList {     List<Student> student;        public List<Student> getStudent() {            return student;        }             public void setStudent(List<Student> student) {            this.student = student;        }        @Override        public String toString() {            return "StudentList [student=" + student + "]";        }   }

Transforming between entity classes and JSON objects