Conversion between JSON and object

In the development process ; It is often necessary to store complex data , We usually use json Storing complex data in the form of strings , No more nonsense, let's talk about the case ：**
Use net Of JSON**

   <dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.4</version>
            <classifier>jdk15</classifier>
   </dependency>

1： character string json Convert object entity class object or collection

		// Object collection conversion json character string 
		    List<Test> allorderList = new ArrayList();
 		   	JSONArray exportDataJson = JSONArray.fromObject(allorderList);
            String exportData = exportDataJson.toString();
	
		//json String conversion object collection 
	   		JSONArray jsonArray = JSONArray.fromObject(json);
	        List<Test> reportVoList =JSONArray.toList(jsonArray, Test.class);

2： character string json And The corresponding transformation of complex sets

			    /**
			  	 *
			     * List<Map<String, Object>> data   conversion json String storage data 
			     * @param json
			     * @return
			     * 
			     */
    			List<Map> list = new ArrayList();
			    Map map = new HashMap();
                map.put("deptName",i.getDeptName());
                List<CaterHistoryBusinessReportVO> lunchResult=new ArrayList();
                List<CaterHistoryBusinessReportVO> dinnerResult=new ArrayList();
                map.put("morningList",lunchResult);
                map.put("dinnerList",dinnerResult);
                list.add(map);
  		        JSONArray jsonArray = JSONArray.fromObject(list);
                String jsonResult = jsonArray.toString();	



		    /**
		     *
		     * json Information transformation  List<Map<String, Object>> data 
		     * @param json
		     * @return
		     * 
		     */‘
		    public static List<Map<String, Object>> toListMap(String json) {
				   List<Object> list = JSON.parseArray(json);
				   List<Map<String, Object>> listw = new ArrayList<Map<String, Object>>();
				   for (Object object : list) {
				       Map<String, Object> ret = (Map<String, Object>) object;
				       listw.add(ret);
				      }
				   return listw;
		   }