JSON Object to Bean

JSON-lib is a java library for serializing and de-serializing java beans, maps, arrays and collections in JSON format. Get the latest binaries from sourceforgehttp://json-lib.sourceforge.net/. This requires the libraries ( json-lib-2.4-jdk15.jar, xom-1.2.7.jar, ezmorph.jar commons-lang.jar, commons-collections.jar, commons-beanutils-1.7.jar and commons-logging-1.1.1.jar) to be in classpath. The following example shows converting a JSON object to Bean.

160kB 저용량에 보는 이득이 많은듯

json-lib-2.4-jdk15.jar	2010-12-14	159.1 kB

[java]
package com.bethecoder.tutorials.json_lib.common;import java.util.Date;
public class Student {
private String firstName;
private String lastName;
private int age;
private String hobby;
private Date dob;

public Student() {
}

public Student(String firstName, String lastName, int age, String hobby,
Date dob) {
super();
this.firstName = firstName;
this.lastName = lastName;
this.age = age;
this.hobby = hobby;
this.dob = dob;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getHobby() {
return hobby;
}

public void setHobby(String hobby) {
this.hobby = hobby;
}
public Date getDob() {
return dob;
}
public void setDob(Date dob) {
this.dob = dob;
}

public String toString() {
return "Student[ " +
"firstName = " + firstName +
", lastName = " + lastName +
", age = " + age +
", hobby = " + hobby +
", dob = " + dob +
" ]";
}
}

[/java]

 

[java]
package com.bethecoder.tutorials.json_lib.tests;import java.util.Date;
import net.sf.json.JSONObject;
import com.bethecoder.tutorials.json_lib.common.Student;
public class Json2Bean {

/**
* @param args
*/
public static void main(String[] args) {
Student stud = new Student("Sriram", "Kasireddi", 2, "Singing", new Date(110, 4, 6));
JSONObject obj = JSONObject.fromObject(stud); //BEAN to JSON
System.out.println(obj.toString(2)); //pretty print with indent

stud = (Student) JSONObject.toBean(obj, Student.class); //JSON to BEAN
System.out.println(stud.toString());
}

}

[/java]

It gives the following output,

[java]
{
"age": 2,
"dob": {
"date": 6,
"day": 4,
"hours": 0,
"minutes": 0,
"month": 4,
"seconds": 0,
"time": 1273084200000,
"timezoneOffset": -330,
"year": 110
},
"firstName": "Sriram",
"hobby": "Singing",
"lastName": "Kasireddi"
}

Student[ firstName = Sriram, lastName = Kasireddi,
age = 2, hobby = Singing, dob = Thu May 06 00:00:00 IST 2010 ]

[/java]