您的位置：首页 > 编程语言 > Java开发

java中用ObjectMapper类实现Json与bean的转换示例

2017-08-21 11:06 1086 查看

前言

ObjectMapper是jackson中的方法，本文主要给大家介绍了关于java中用ObjectMapper类实现Json与bean转换的相关内容，分享出来供大家参考学习，下面话不多说了，来一起看看详细的介绍吧。

一、将json字符串转为bean

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

@Controller
public 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、将bean转为json

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);
}

总结

以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作能带来一定的帮助，如果有疑问大家可以留言交流，谢谢大家对脚本之家的支持。

您可能感兴趣的文章:

内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理

标签： java objectmapper json

相关文章推荐

新的分享

章节导航