Json lib

Json_lib可以方便的将Java对象转成json格式的字符串，也可以将Java对象转换成xml格式的文档，同样可以将Json字符串转换成Java对象，或者将xml字符串转换成Java对象。

官网：http://json-lib.sourceforge.net/

JSON在线转换：http://json.parser.online.fr/

JSON教程：http://www.json.org/json-zh.html

官网上说明了json_lib还需要依赖的Jar包有：

JAR	网址
jakarta commons-lang 2.5	http://commons.apache.org/lang/download_lang.cgi
jakarta commons-beanutils 1.8.0	http://commons.apache.org/beanutils/download_beanutils.cgi
jakarta commons-collections 3.2.1	http://commons.apache.org/collections/download_collections.cgi
jakarta commons-logging 1.1.1	http://commons.apache.org/logging/download_logging.cgi
ezmorph 1.0.6	http://ezmorph.sourceforge.net/

注意这里如果jakarta commons-lang 使用3.1版本的会报：Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.exception.NestableRuntimeException

所以这里还是使用2.6的吧

MyBean.java：

    package com.iflytek.json;  
      
    import net.sf.json.JSONFunction;  
      
    /** 
     * @author xudongwang 2012-1-15 
     *  
     *         Email:xdwangiflytek@gmail.com 
     */  
    public class MyBean {  
        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];");  
          
          
        public String getName() {  
            return name;  
        }  
      
        public void setName(String name) {  
            this.name = name;  
        }  
      
        public int getPojoId() {  
            return pojoId;  
        }  
      
        public void setPojoId(int pojoId) {  
            this.pojoId = pojoId;  
        }  
      
        public char[] getOptions() {  
            return options;  
        }  
      
        public void setOptions(char[] options) {  
            this.options = options;  
        }  
      
        public String getFunc1() {  
            return func1;  
        }  
      
        public void setFunc1(String func1) {  
            this.func1 = func1;  
        }  
      
        public JSONFunction getFunc2() {  
            return func2;  
        }  
      
        public void setFunc2(JSONFunction func2) {  
            this.func2 = func2;  
        }  
      
    }  

JsonlibTest.java：

    package com.iflytek.json;  
      
    import java.lang.reflect.InvocationTargetException;  
    import java.util.ArrayList;  
    import java.util.HashMap;  
    import java.util.List;  
    import java.util.Map;  
      
    import net.sf.json.JSONArray;  
    import net.sf.json.JSONObject;  
      
    import org.apache.commons.beanutils.PropertyUtils;  
      
    /** 
     * @author xudongwang 2012-1-15 
     *  
     *         Email:xdwangiflytek@gmail.com 
     */  
    public class JsonlibTest {  
      
        // JSONArray是将一个Java对象转换成json的Array格式,如['xdwang', 22]  
        private JSONArray jsonArray = null;  
        // JSONObject是将Java对象转换成一个json的Object形式,如{name:'xdwang', age: 22}  
        private JSONObject jsonObject = null;  
      
        public static void main(String[] args) {  
            JsonlibTest json = new JsonlibTest();  
            json.ArrayToJSON();  
            json.ListToJSON();  
            json.MapsToJSON();  
            json.BeanToJSON();  
            json.JSONToBean();  
        }  
      
        /** 
         * 数组转JSON操作 
         */  
        public void ArrayToJSON() {  
            boolean[] boolArray = new boolean[] { true, false, true };  
            jsonArray = JSONArray.fromObject(boolArray);  
            System.out.println("数组转JSON操作:" + jsonArray);  
        }  
      
        /** 
         * 集合转JSON操作 
         */  
        public void ListToJSON() {  
            List<String> list = new ArrayList<String>();  
            list.add("first");  
            list.add("second");  
            jsonArray = JSONArray.fromObject(list);  
            System.out.println("集合转JSON操作:" + jsonArray);  
        }  
      
        /** 
         * Maps转JSON操作 
         */  
        public void MapsToJSON() {  
            Map<String, Object> map = new HashMap<String, Object>();  
            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 = JSONObject.fromObject(map);  
            System.out.println("Maps转JSON操作:" + jsonObject);  
        }  
      
        /** 
         * Bean转JSON操作 
         */  
        public void BeanToJSON() {  
            jsonObject = JSONObject.fromObject(new MyBean());  
            System.out.println("Bean转JSON操作:" + jsonObject);  
        }  
      
        /** 
         * JSON转Bean操作 
         */  
        public void JSONToBean() {  
            try {  
                String json = "{"func1":function(i){ return this.options[i]; },"func2":function(i){ return this.options[i]; },"name":"json","options":["a","f"],"pojoId":1}";  
                jsonObject = JSONObject.fromObject(json);  
                Object bean = JSONObject.toBean(jsonObject);  
                System.out.println("jsonStr:" + json);  
      
                System.out.println("name:" + jsonObject.get("name"));  
                System.out.println("name:"  
                        + PropertyUtils.getProperty(bean, "name"));  
                System.out.println("pojoId:" + jsonObject.get("pojoId"));  
                System.out.println("pojoId:"  
                        + PropertyUtils.getProperty(bean, "pojoId"));  
                System.out.println("options:" + jsonObject.get("options"));  
                System.out.println("options:"  
                        + PropertyUtils.getProperty(bean, "options"));  
                System.out.println("func1:" + jsonObject.get("func1"));  
                System.out.println("func1:"  
                        + PropertyUtils.getProperty(bean, "func1"));  
                System.out.println("func2:" + jsonObject.get("func2"));  
                System.out.println("func2:"  
                        + PropertyUtils.getProperty(bean, "func2"));  
            } catch (IllegalAccessException e) {  
                e.printStackTrace();  
            } catch (InvocationTargetException e) {  
                e.printStackTrace();  
            } catch (NoSuchMethodException e) {  
                e.printStackTrace();  
            }  
        }  
      
    }  

  

这里就不描述xml的相关操作了，具体可以查看文档。

• json-lib-2.4-jdk15.jar (155.4 KB)
• 下载次数: 15

• json-lib-2.4-jdk15-javadoc.jar (242.7 KB)
• 下载次数: 13

• json-lib-2.4-jdk15-sources.jar (102.5 KB)
• 下载次数: 14