前言
ObjectMapper是jackson中的方法，本文主要給大家介紹了關于java中用ObjectMapper類實現Json與bean轉換的相關內容，分享出來供大家參考學習，下面話不多說了，來一起看看詳細的介紹吧。
一、將json字符串轉為bean
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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()); } }} |
或者
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@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; }} |
二、將bean轉為json
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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); } |
總結
以上就是這篇文章的全部內容了，希望本文的內容對大家的學習或者工作能帶來一定的幫助，如果有疑問大家可以留言交流，謝謝大家對服務器之家的支持。
原文鏈接：http://blog.csdn.net/cc_yy_zh/article/details/77185130
