爱华网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();
首先一个javabean对象
public class Student {
private intid ;
privateString name;
private intage;
public intgetId() {
returnid;
}
public voidsetId(int id) {
this.id =id;
}
publicString getName() {
returnname;
}
public voidsetName(String name) {
this.name =name;
}
public intgetAge() {
returnage;
}
public voidsetAge(int age) {
this.age =age;
}
publicString toString(){
returnthis.id + ", " + this.name + ", " + this.age;
}
}
然后测试toBean方法的类
import net.sf.json.JSONObject;
public class ToBeanTest {
publicstatic void main(String[] args) {
String json ="{id:'1001',name:'张三',age:'22'}";
Student stu= new Student();
JSONObjectobj = JSONObject.fromObject(json);
stu =(Student)JSONObject.toBean(obj, Student.class);
System.out.println(stu);
}
}
输出结果为1001, 张三,22
然后我们在修改修改
import net.sf.json.JSONObject;
public class ToBeanTest {
publicstatic void main(String[] args) {
String json ="{id:'1001',name:'张三'}";
Student stu= new Student();
JSONObjectobj = JSONObject.fromObject(json);
stu =(Student)JSONObject.toBean(obj, Student.class);
System.out.println(stu);
}
}
把年龄给去掉age为int型，输出结果为：1001, 张三,0
然后再做小小改动
import net.sf.json.JSONObject;
public class ToBeanTest {
publicstatic void main(String[] args) {
Stringjson = "{id:'1001',age:'22'}";
Student stu= new Student();
JSONObjectobj = JSONObject.fromObject(json);
stu =(Student)JSONObject.toBean(obj, Student.class);
System.out.println(stu);
}
}
把姓名给去掉name为String型，输出结果为：1001,null, 22
再改动一下：
import net.sf.json.JSONObject;
public class ToBeanTest {
publicstatic void main(String[] args) {
String json ="{id:'1001',name:'张三',age:'nn'}";
Student stu= new Student();
JSONObjectobj = JSONObject.fromObject(json);
stu =(Student)JSONObject.toBean(obj, Student.class);
System.out.println(stu);
}
}
把age改成非整形，输出结果为：
1001, 张三,0
再改动一下：
import net.sf.json.JSONObject;
public class ToBeanTest {
publicstatic void main(String[] args) {
String json ="{id:'1001',name:'张三',age:'22',sex:'男'}";
Student stu= new Student();
JSONObjectobj = JSONObject.fromObject(json);
stu =(Student)JSONObject.toBean(obj, Student.class);
System.out.println(stu);
}
}
加了一个sex:'男'的一对键值，输出结果为：
1001, 张三, 22
