实体类和JSON对象之间相互转化

下面是脚本之家 jb51.cc 通过网络收集整理的代码片段。

脚本之家小编现在分享给大家，也给大家做个参考。

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);
	}
}

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 + "]";
		}
}

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 + "]";
		}   
}

以上是脚本之家(jb51.cc)为你收集整理的全部代码内容，希望文章能够帮你解决所遇到的程序开发问题。

如果觉得脚本之家网站内容还不错，欢迎将脚本之家网站推荐给程序员好友。

（编辑：安卓应用网）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!