实体类和JSON对象之间相互转化

. [代码]工具类

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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. [代码]实体（子类）

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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. [代码]实体父类     跳至 [1] [2] [3] [全屏预览]

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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 + "]";         }   }