本文实例讲述了java对象与JSON对象之间互相转换实现方法。分享给大家供大家参考,具体如下:import java.util.ArrayList;import java.util.Collection;import java.util.I
本文实例讲述了java对象与JSON对象之间互相转换实现方法。分享给大家供大家参考,具体如下:
import java.util.ArrayList;import java.util.Collection;import java.util.Iterator;import java.util.List;import net.sf.json.JSONArray;import net.sf.json.JSONObject;public class MainClass { public static void main(String[] args) { TestJsonBean(); TestJsonAttribute(); TestJsonArray(); } @SuppressWarnings("rawtypes") private static void TestJsonArray() { Student student1 = new Student(); student1.setId(1); student1.setName("jag"); student1.setSex("man"); student1.setAge(25); student1.setHobby(new String[]{"篮球","游戏"}); Student student2 = new Student(); student2.setId(2); student2.setName("tom"); student2.setSex("woman"); student2.setAge(23); student2.setHobby(new String[]{"上网","跑步"}); List<Student> list = new ArrayList<Student>(); list.add(student1); list.add(student2); JSONArray jsonArray = JSONArray.fromObject(list); System.out.println(jsonArray.toString()); JSONArray new_jsonArray=JSONArray.fromObject(jsonArray.toArray()); Collection java_collection=JSONArray.toCollection(new_jsonArray); if(java_collection!=null && !java_collection.isEmpty()) { Iterator it=java_collection.iterator(); while(it.hasNext()) { JSONObject jsonObj=JSONObject.fromObject(it.next()); Student stu=(Student) JSONObject.toBean(jsonObj,Student.class); System.out.println(stu.getName()); } } } private static void TestJsonAttribute() { JSONObject jsonObj = new JSONObject(); jsonObj.put("Int_att",25);//添加int型属性 jsonObj.put("String_att","str");//添加string型属性 jsonObj.put("Double_att",12.25);//添加double型属性 jsonObj.put("Boolean_att",true);//添加boolean型属性 //添加JSONObject型属性 JSONObject jsonObjSon = new JSONObject(); jsonObjSon.put("id", 1); jsonObjSon.put("name", "tom"); jsonObj.put("JSONObject_att",jsonObjSon); //添加JSONArray型属性 JSONArray jsonArray = new JSONArray(); jsonArray.add("array0"); jsonArray.add("array1"); jsonArray.add("array2"); jsonArray.add("array3"); jsonObj.put("JSONArray_att", jsonArray); System.out.println(jsonObj.toString()); System.out.println("Int_att:"+jsonObj.getInt("Int_att")); System.out.println("String_att:"+jsonObj.getString("String_att")); System.out.println("Double_att:"+jsonObj.getDouble("Double_att")); System.out.println("Boolean_att:"+jsonObj.getBoolean("Boolean_att")); System.out.println("JSONObject_att:"+jsonObj.getJSONObject("JSONObject_att")); System.out.println("JSONArray_att:"+jsonObj.getJSONArray("JSONArray_att")); } private static void TestJsonBean() { Student student = new Student(); student.setId(1); student.setName("jag"); student.setSex("man"); student.setAge(25); student.setHobby(new String[]{"篮球","上网","跑步","游戏"}); JSONObject jsonStu = JSONObject.fromObject(student); System.out.println(jsonStu.toString()); System.out.println(jsonStu.getJSONArray("hobby")); Student stu = (Student) JSONObject.toBean(jsonStu, Student.class); System.out.println(stu.getName()); JSONObject jsonObj = new JSONObject(); jsonObj.put("id",1); jsonObj.put("name","张勇"); jsonObj.put("sex","男"); jsonObj.put("age",24); //jsonObj.put("hobby",new String[]{"上网","游戏","跑步","音乐"}); //System.out.println(jsonObj.toString()); Student stud = (Student) JSONObject.toBean(jsonObj,Student.class); System.out.println(stud.getName()); }}
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