7 Lucene筆記（七）：第三方工具，將javabean、list、Map<String,object>轉成json文本

導入第三方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轉換成Json 文本格式

      */

     @Test

     publicvoidjavabeanToJson() {

          Articleart = newArticle(1, "小陳", "小陳要努力" );

          JSONArrayjsonArray = JSONArray. fromObject(art);

          StringjsonJava = jsonArray.toString();

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

     }

(2)List-->Json

     /**

      * List轉成Json文本

      */

     @Test

     publicvoidlistToJson() {

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

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

           list.add( new Article(2,"小周","東京食種" ));

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

          JSONArray jsonArray = JSONArray.fromObject(list);

          StringjsonList = jsonArray.toString();

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

     }

(3)Map-->Json

     /**

      * Map轉成Json文本

      */

     @Test

     publicvoidmapToJson() {

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

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

           list.add( new Article(2,"小周","東京食種" ));

           list.add( new Article(3,"小漲","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去掉外括號後文本：\n" +jsonMap );//DataGrid需要的格式

     }