在
www.json.org<wbr style="LINE-HEIGHT: 1.3em"></wbr><wbr>上公布了很多Java下的json解析工具,其中org.json和json-lib比较简单,两者使用上差不多。下面两段源代码是分别使用这两个工具解析和构造JSON的演示程序。
http://nchc.dl.sourceforge.net/sourceforge/json-lib/json-lib-2.2.1-jdk15.jar<wbr style="LINE-HEIGHT: 1.3em"></wbr></wbr><wbr>
(Needs libs below:)
[
- jakarta commons-lang 2.3
- jakarta commons-beanutils 1.7.0
- jakarta commons-collections 3.2
- jakarta commons-logging 1.1
- ezmorph 1.0.4
]
这是使用json-lib的程序:
import java.util.HashMap;
import java.util.Map;
import net.sf.json.JSONObject;
public class Test {
public static void main(String[] args) {
String json = "{\"name\":\"reiz\"}";
JSONObject jsonObj = JSONObject.fromObject(json);
String name = jsonObj.getString("name");
jsonObj.put("initial", name.substring(0, 1).toUpperCase());
String[] likes = new String[] { "JavaScript", "Skiing", "Apple Pie" };
jsonObj.put("likes", likes);
Map <String, String> ingredients = new HashMap <String, String>();
ingredients.put("apples", "3kg");
ingredients.put("sugar", "1kg");
ingredients.put("pastry", "2.4kg");
ingredients.put("bestEaten", "outdoors");
jsonObj.put("ingredients",ingredients);
System.out.println(jsonObj);
}
}
http://www.json.org/java/json.zip<wbr style="LINE-HEIGHT: 1.3em"></wbr></wbr><wbr>
这是使用org.json的程序:
import java.util.HashMap;
import java.util.Map;
import org.json.JSONException;
import org.json.JSONObject;
public class Test {
public static void main(String[] args) throws JSONException {
String json = "{\"name\":\"reiz\"}";
JSONObject jsonObj = new JSONObject(json);
String name = jsonObj.getString("name");
jsonObj.put("initial", name.substring(0, 1).toUpperCase());
String[] likes = new String[] { "JavaScript", "Skiing", "Apple Pie" };
jsonObj.put("likes", likes);
Map <String, String> ingredients = new HashMap <String, String>();
ingredients.put("apples", "3kg");
ingredients.put("sugar", "1kg");
ingredients.put("pastry", "2.4kg");
ingredients.put("bestEaten", "outdoors");
jsonObj.put("ingredients", ingredients);
System.out.println(jsonObj);
System.out.println(jsonObj);
}
}
两者的使用几乎是相同的,但org.json比json-lib要轻量得多,前者没有任何依赖,而后者要依赖ezmorph和commons的lang、logging、beanutils、collections等组件。