对象转JSON的方法

对象转JSON的方法

json（1）

JSON  JavaScript Object Natation JavaScript  JSON  JSON 

commons-httpclient-3.1.jar
以上包可以从

http://commons.apache.org/index.html

http://json-lib.sourceforge.net/

http://ezmorph.sourceforge.net/

http://morph.sourceforge.net/

http://www.docjar.com/

中下载到。

1.List

new ArrayList();

"first" );

"second" );

JSONArray jsonArray2 = JSONArray.fromObject( list );

2.Map

new HashMap();

"json");

map.put("bool", Boolean.TRUE);

new Integer(1));

new String[] { "b" });

"function(i){ return this.arr[i]; }");

JSONObject json = JSONObject.fromObject(map);

3.Bean

JSONObject jsonObject = JSONObject.fromObject(new JsonBean());

4.

newtruefalsetrue };

JSONArray jsonArray1 = JSONArray.fromObject(boolArray);

 

一般数据转换成

JSONArray jsonArray3 = JSONArray.fromObject("['json','is','easy']" );

6.beans

new ArrayList();

new JsonBean2();

jb1.setCol(1);

jb1.setRow(1);

jb1.setValue("xx");

new JsonBean2();

jb2.setCol(2);

jb2.setRow(2);

jb2.setValue("");

list.add(jb1);

list.add(jb2);

JSONArray ja = JSONArray.fromObject(list);

---------------------------------

源码说明：

---------------------------------

 

package com.montersky.wap.tools;

public class JsonBean2 implements java.io.Serializable{

/**

 * 

 */

private static final long serialVersionUID = -4662760972533309454L;

 

private int col;

private int row;

private String value;

public int getCol() {

return col;

}

public void setCol(int col) {

this.col = col;

}

public int getRow() {

return row;

}

public void setRow(int row) {

this.row = row;

}

public String getValue() {

return value;

}

public void setValue(String value) {

this.value = value;

}

}

 

 

                //List集合转换成json代码

List list = new ArrayList();

list.add( "first" );

list.add( "second" );

JSONArray jsonArray2 = JSONArray.fromObject( list );

System.out.println("List集合转换成json代码");

System.out.println(jsonArray2.toString());

 

//Map集合转换成json代码

Map map = new HashMap();

map.put("name", "json");

map.put("bool", Boolean.TRUE);

map.put("int", new Integer(1));

map.put("arr", new String[] { "a", "b" });

map.put("func", "function(i){ return this.arr[i]; }");

JSONObject json = JSONObject.fromObject(map);

System.out.println("Map集合转换成json代码");

System.out.println(json.toString());

 

//Bean转换成json代码

JSONObject jsonObject = JSONObject.fromObject(new JsonBean2());

System.out.println("Bean转换成json代码");

System.out.println(jsonObject.toString());

 

//数组转换成json代码

boolean[] boolArray = new boolean[] { true, false, true };

JSONArray jsonArray1 = JSONArray.fromObject(boolArray);

System.out.println("数组转换成json代码");

System.out.println(jsonArray1.toString());

 

//一般数据转换成json代码

JSONArray jsonArray3 = JSONArray.fromObject("['json','is','easy']" );

System.out.println("一般数据转换成json代码");

System.out.println(jsonArray3.toString());

 

//beans转换成json代码

list = new ArrayList();

JsonBean2 jb1 = new JsonBean2();

jb1.setCol(1);

jb1.setRow(1);

jb1.setValue("xx");

JsonBean2 jb2 = new JsonBean2();

jb2.setCol(2);

jb2.setRow(2);

jb2.setValue("");

list.add(jb1);

list.add(jb2);

JSONArray ja = JSONArray.fromObject(list);

System.out.println("beans转换成json代码");

System.out.println(ja.toString());               

 

List集合转换成json代码

["first","second"]

Map集合转换成json代码

{"arr":["a","b"],"int":1,"name":"json","func":function(i){ return this.arr[i]; },"bool":true}

Bean转换成json代码

{"col":0,"row":0,"value":""}

数组转换成json代码

[true,false,true]

一般数据转换成json代码

["json","is","easy"]

beans转换成json代码

[{"col":1,"row":1,"value":"xx"},{"col":2,"row":2,"value":""}]