7 Lucene笔记（七）：第三方工具，将javabean、list、Map<String,object>转成json文本

导入第三方jar包：

 commons-beanutils-1.7.0.jar

 commons-collections-3.1.jar

 commons-lang-2.5.jar

 commons-logging-1.1.1.jar

 ezmorph-1.0.3.jar

 json-lib-2.1-jdk15.jar  

（1）javabean-->json

     /**

      *javabean转换成Json 文本格式

      */

     @Test

     publicvoidjavabeanToJson() {

          Articleart= newArticle(1,"小陈","小陈要努力" );

          JSONArrayjsonArray= JSONArray. fromObject(art);

          StringjsonJava= jsonArray.toString();

          System.out.println("JSON文本:\n"+jsonJava);

     }

(2)List-->Json

     /**

      * List转成Json文本

      */

     @Test

     publicvoidlistToJson() {

          List<Article>list= newArrayList<Article>();

           list.add( new Article(1,"小陈","金木研"));

           list.add( new Article(2,"小周","东京食种"));

           list.add( new Article(3,"小涨","壁虎"));

          JSONArray jsonArray= JSONArray.fromObject(list);

          StringjsonList= jsonArray.toString();

          System.out.println("JSON文本：\n"+jsonList);    

     }

(3)Map-->Json

     /**

      * Map转成Json文本

      */

     @Test

     publicvoidmapToJson() {

          List<Article>list= newArrayList<Article>();

           list.add( new Article(1,"小陈","金木研"));

           list.add( new Article(2,"小周","东京食种"));

           list.add( new Article(3,"小涨","壁虎"));

          

          Map<String, Object>map= newHashMap<String, Object>();

           map.put( "total", list.size() );

           map.put( "rows", list);

          JSONArray jsonArray= JSONArray.fromObject(map);

          

          StringjsonMap= jsonArray.toString();

          System.out.println("JSON文本：\n"+jsonMap);

          

           jsonMap = jsonMap.substring(1, jsonMap.length()-1);

          System.out.println("\nJSON去掉外括号后文本：\n"+jsonMap);//DataGrid需要的格式

     }