java中用ObjectMapper类实现Json与bean的转换示例

public class JsonToJavaBean { public static void main(String[] args) {  String str="{/"student/":[{/"name/":/"leilei/",/"age/":23},{/"name/":/"leilei02/",/"age/":23}]}";  Student stu = null;  List list = null;  try {   ObjectMapper objectMapper=new ObjectMapper(); StudentList studentList=objectMapper.readValue(str,StudentList.class);   list=studentList.getStudent();  } catch (Exception e) {   // TODO Auto-generated catch block   e.printStackTrace();   }   for(Student s:list){   System.out.println(s.getName()+" "+s.getAge());  } }}

@Controllerpublic class OrderController extends BaseController { @Autowired private ObjectMapper objectMapper1; @RequestMapping(value = "/order/searchOrderImportByItem") public ResponseData searchOrderImportByItem(@RequestParam("page") Integer page,   @RequestParam("pagesize") Integer pagesize, HttpServletRequest request) {  try {   String formData = request.getParameter("formData");   OrderQueryRequest orderQueryRequest = null;   if (StringUtils.isNotBlank(formData)) {    objectMapper1.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm"));    orderQueryRequest = objectMapper1.readValue(formData, OrderQueryRequest.class);   } else {    return null;   }   PageHelper.startPage(page, pagesize);   List<OrderQueryRequest> list = orderService.searchOrderImportByItem(orderQueryRequest);   return new ResponseData(list);  } catch (Exception e) {   e.printStackTrace();  }  return null; }}

public static void main(String[] args) {  ArrayList list=new ArrayList();  Student s1=new Student();  s1.setName("leilei");  s1.setAge(23);  Student s2=new Student();  s2.setName("leilei02");  s2.setAge(23);  list.add(s1);  list.add(s2);    StringWriter str=new StringWriter();    ObjectMapper objectMapper=new ObjectMapper();  try {   objectMapper.writeValue(str, list);  } catch (Exception e) {   // TODO Auto-generated catch block   e.printStackTrace();  }   System.out.println(str); }