JAVA JSON 数据 大全

在网页中想后台传递多个数据时，有时数据还是多个动态列表，数据很复杂时，JavaScript程序员喜欢把他们作为json串进行处理，后台收到后需要对json字符串进行解析，幸好有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/

public class Test {        /**      * @param args      * @author wen      */        public static void main(String[] args) {        //            test1();        //            test2();        String json = “{1:{1:{jhinfo:['计划一','亲亲宝宝','www.wenhq.com'],jhrate:['1-5:10.0','6-100:5.0/1']},2:{jhinfo:['计划二','亲亲宝宝','www.wenhq.com'],jhrate:['1-100:100.0']},3:{jhinfo:['计划三','亲亲宝宝','www.open-open.com'],jhrate:['1-100:150.0/7']}},2:{4:{jhinfo:['年计划','亲亲宝宝','www.wenhq.com'],jhrate:['365-365:1000.0']}}}”;        try {        JSONObject jsonObject = JSONObject.fromObject(json);        String name = jsonObject.getString(“1″);        String address = jsonObject.getString(“2″);        System.out.println(“name is:” + name);        System.out.println(“address is:” + address);        Iterator it=jsonObject.keys();        while (it.hasNext()){        System.out.println(jsonObject.get(it.next()));        }        } catch (JSONException e) {        e.printStackTrace();        }        }        /**      * json对象字符串转换      * @author wen      */        private static void test2() {        String json = “{‘name’: ‘亲亲宝宝’,'array’:[{'a':'111','b':'222','c':'333'},{},{'a':'999'}],’address’:'亲亲宝宝’}”;        try {        JSONObject jsonObject = JSONObject.fromObject(json);        String name = jsonObject.getString(“name”);        String address = jsonObject.getString(“address”);        System.out.println(“name is:” + name);        System.out.println(“address is:” + address);        JSONArray jsonArray = jsonObject.getJSONArray(“array”);        for (int i = 0; i < jsonArray.size(); i++) {        System.out.println(“item ” + i + ” :” + jsonArray.getString(i));        }        } catch (JSONException e) {        e.printStackTrace();        }        }        /**      * json数组 转换，数组以[开头      * @author wen      */        private static void test1() {        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"]        }