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
- 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"]
- 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
- 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}
- 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
- 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]; }}
- 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
- 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}]
- 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
- 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" ) );
- 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" ) );
- 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() );
- 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]; }]
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