JSONObject的toBean 和 fromObject

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public static void main(String[] args) {Map map=new HashMap();map.put("我","妹");map.put("擦","哇");map.put("你","呀");JSONObject json = JSONObject.fromObject(map);System.out.println(json);}輸出的結果 {"我":"妹","擦":"哇","你":"呀"} toBean();首先一個javabean對象public class Student {private int id ;private String name;private int age;public int getId() {return id;}public void setId(int id) {this.id = id;}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;}public String toString(){return this.id + ", " + this.name + ", " + this.age;}}然後測試toBean方法的類import net.sf.json.JSONObject;public class ToBeanTest {public static void main(String[] args) {String json = "{id:‘1001‘,name:‘張三‘,age:‘22‘}";Student stu = new Student();JSONObject obj = JSONObject.fromObject(json);stu = (Student)JSONObject.toBean(obj, Student.class);System.out.println(stu);}}輸出結果為1001, 張三, 22 然後我們在修改修改import net.sf.json.JSONObject;public class ToBeanTest {public static void main(String[] args) {String json = "{id:‘1001‘,name:‘張三‘}";Student stu = new Student();JSONObject obj = JSONObject.fromObject(json);stu = (Student)JSONObject.toBean(obj, Student.class);System.out.println(stu);}}把年齡給去掉age為int型，輸出結果為：1001, 張三, 0 然後再做小小改動import net.sf.json.JSONObject;public class ToBeanTest {public static void main(String[] args) {String json = "{id:‘1001‘,age:‘22‘}"; Student stu = new Student();JSONObject obj = JSONObject.fromObject(json);stu = (Student)JSONObject.toBean(obj, Student.class);System.out.println(stu);}}把姓名給去掉name為String型，輸出結果為：1001, null, 22 再改動一下：import net.sf.json.JSONObject;public class ToBeanTest {public static void main(String[] args) {String json = "{id:‘1001‘,name:‘張三‘,age:‘nn‘}";Student stu = new Student();JSONObject obj = JSONObject.fromObject(json);stu = (Student)JSONObject.toBean(obj, Student.class);System.out.println(stu);}}把age改成非整形，輸出結果為：1001, 張三, 0 再改動一下：import net.sf.json.JSONObject;public class ToBeanTest {public static void main(String[] args) {String json = "{id:‘1001‘,name:‘張三‘,age:‘22‘,sex:‘男‘}";Student stu = new Student();JSONObject obj = JSONObject.fromObject(json);stu = (Student)JSONObject.toBean(obj, Student.class);System.out.println(stu);}}加了一個sex:‘男‘的一對索引值，輸出結果為：1001, 張三, 22

 

JSONObject的toBean 和 fromObject