如何使用Spring Boot将JSON映射到对象

本文介绍了如何使用Spring Boot将JSON映射到对象的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

你好，我想知道在使用Spring Boot时如何将json消息映射到java中的对象.

Hello I'd like to know how I could mapp my json message to object in java when using spring boot.

让我说我正在获取json

Let's say I'm getting json like

{ "customerId": 2, "firstName": "Jan", "lastName": "Nowak", "town": "Katowice" }

，我想在我的java程序中使其成为实体: 出于任何原因，我都不希望字段名匹配

and I'd like to make it entity in my java program: and for whatever reason I dont want to have match on field names

public class Customer { //Something like @Map("customerId") private long OMG; //Something like @Map("firstName") private String WTF; //Something like @Map("lastName") private String LOL; //Something like @Map("town") private String YOLO;

我找不到应该使用的注释，不是使用杰克逊，而是内置在spring boot转换器中?

I cannot find what annotation I should use, Not using jackson, just built in spring boot converter??

推荐答案

Jackson开箱即用，提供了春季启动功能.

Spring boot comes with Jackson out-of-the-box.

您可以使用@RequestBody Spring MVC批注将json字符串解编组到Java对象中...

You can use @RequestBody Spring MVC annotation to un-marshall json string to Java object... something like this.

@RestController public class CustomerController { //@Autowired CustomerService customerService; @RequestMapping(path="/customers", method= RequestMethod.POST) @ResponseStatus(HttpStatus.CREATED) public Customer postCustomer(@RequestBody Customer customer){ //return customerService.createCustomer(customer); } }

使用@JsonProperty和相应的json字段名称注释您的实体成员元素.

Annotate your entities member elements with @JsonProperty with corresponding json field names.

public class Customer { @JsonProperty("customerId") private long OMG; @JsonProperty("firstName") private String WTF; @JsonProperty("lastName") private String LOL; @JsonProperty("town") private String YOLO; }