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.wenhq.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"]
}