json跟java、xml转换 _JavaScript

json和java、xml转换

JSON-lib这个Java类包用于把bean,map和XML转换成JSON并能够把JSON转回成bean和DynaBean。?

下载地址:http://json-lib.sourceforge.net/?
还要需要的第3方包:?
org.apache.commons(3.2以上版本)?
org.apache.oro?
net.sf.ezmorph(ezmorph-1.0.4.jar)?
nu.xom?

1、List?

Java代码

boolean[] boolArray =?new?boolean[]{true,false,true};??? ??
??????????? JSONArray jsonArray1 = JSONArray.fromObject( boolArray );??? ??
??????????? System.out.println( jsonArray1 );??? ??
???????????// prints [true,false,true]?????
??????????? ??
??????????? List list =?new?ArrayList();??? ??
??????????? list.add(?"first"?);??? ??
??????????? list.add(?"second"?);??? ??
??????????? JSONArray jsonArray2 = JSONArray.fromObject( list );??? ??
??????????? System.out.println( jsonArray2 );??? ??
???????????// prints ["first","second"]?????
??
??????????? JSONArray jsonArray3 = JSONArray.fromObject(?"['json','is','easy']"?);??? ??
??????????? System.out.println( jsonArray3 );??? ??
???????????// prints ["json","is","easy"]?????

2、Map?

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

3、BEAN?

Java代码

/**
????? * Bean.java
???????? private String name = "json";???
???????? private int pojoId = 1;???
???????? private char[] options = new char[]{'a','f'};???
???????? private String func1 = "function(i){ return this.options[i]; }";???
???????? private JSONFunction func2 = new JSONFunction(new String[]{"i"},"return this.options[i];");
???? */???
JSONObject jsonObject = JSONObject.fromObject(?new?JsonBean() );??? ??
System.out.println( jsonObject );??? ??
//{"func1":function(i){ return this.options[i]; },"pojoId":1,"name":"json","options":["a","f"],"func2":function(i){ return this.options[i]; }}????

4、BEANS?

Java代码

/**
?????? * private int row ;
?????????? private int col ;
?????????? private String value ;
?????? *
?????? */??
List 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( ja.toString() ); ??
?????????//[{"value":"xx","row":1,"col":1},{"value":"","row":2,"col":2}]??

5、String to bean?

Java代码

String json =?"{name=\"json\",bool:true,int:1,double:2.2,func:function(a){ return a; },array:[1,2]}";??? ??
JSONObject jsonObject = JSONObject.fromString(json);??? ??
Object bean = JSONObject.toBean( jsonObject );??? ??
assertEquals( jsonObject.get(?"name"?), PropertyUtils.getProperty( bean,?"name"?) );??? ??
?? assertEquals( jsonObject.get(?"bool"?), PropertyUtils.getProperty( bean,?"bool"?) );??? ??
?? assertEquals( jsonObject.get(?"int"?), PropertyUtils.getProperty( bean,?"int"?) );??? ??
??? assertEquals( jsonObject.get(?"double"?), PropertyUtils.getProperty( bean,?"double"?) );??? ??
??? assertEquals( jsonObject.get(?"func"?), PropertyUtils.getProperty( bean,?"func"?) );??? ??
?? List expected = JSONArray.toList( jsonObject.getJSONArray(?"array"?) );??? ??
?? assertEquals( expected, (List) PropertyUtils.getProperty( bean,?"array"?) );????

Java代码

String json =?"{\"value\":\"xx\",\"row\":1,\"col\":1}";??? ??
JSONObject jsonObject = JSONObject.fromString(json); ??
?? JsonBean2 bean = (JsonBean2) JSONObject.toBean( jsonObject, JsonBean2.class?);??? ??
??? assertEquals( jsonObject.get(?"col"?),new?Integer( bean.getCol())?? );??? ??
????? assertEquals( jsonObject.get(?"row"?),?new?Integer( bean.getRow() ) );??? ??
????? assertEquals( jsonObject.get(?"value"?), bean.getValue() );????

6 json to xml?

1) 
JSONObject json = new JSONObject( true ); 
String xml = XMLSerializer.write( json ); 

<o class="object" null="true"> 

2) 
JSONObject json = JSONObject.fromObject("{\"name\":\"json\",\"bool\":true,\"int\":1}"); 
String xml = XMLSerializer.write( json ); 
<o class="object"> 
<name type="string">json</name> 
<bool type="boolean">true</bool> 
<int type="number">1</int> 
</o> 
<o class="object"> 
<name type="string">json</name> 
<bool type="boolean">true</bool> 
<int type="number">1</int> 
</o> 
3) 
JSONArray json = JSONArray.fromObject("[1,2,3]"); 
String xml = XMLSerializer.write( json ); 
<a class="array"> 
<e type="number">1</e> 
<e type="number">2</e> 
<e type="number">3</e> 
</a> 

7 、xml to json 
<a class="array"> 
<e type="function" params="i,j"> 
return matrix[i][j]; 
</e> 
</a> 
<a class="array"> 
<e type="function" params="i,j"> 
return matrix[i][j]; 
</e> 
</a> 

JSONArray json = (JSONArray) XMLSerializer.read( xml ); 
System.out.println( json ); 
// prints [function(i,j){ return matrix[i][j]; }]