@RequestBody不能映射到對(duì)象

在使用@RequestBody 映射對(duì)象時(shí)總是獲取不到j(luò)son穿過來(lái)的值

@RequestMapping(value = "/json")
public  @ResponseBody Items json(@RequestBody Items items) {
System.out.println(items);
return items;
}

public class Items {
  private Integer id;
  private String name;
  private Float price;
  private String pic;
  private Date createtime;
  private String detail;
  public Integer getId() {
      return id;
  }
  public void setId(Integer id) {
      this.id = id;
  }
  public String getName() {
      return name;
  }
  public void setName(String name) {
      this.name = name == null ? null : name.trim();
  }
  public Float getPrice() {
      return price;
  }
  public void setPrice(Float price) {
      this.price = price;
  }
  public String getPic() {
      return pic;
  }
  public void setPic(String pic) {
      this.pic = pic == null ? null : pic.trim();
  }
  public Date getCreatetime() {
      return createtime;
  }
  public void setCreatetime(Date createtime) {
      this.createtime = createtime;
  }
  public String getDetail() {
      return detail;
  }
  public void setDetail(String detail) {
      this.detail = detail == null ? null : detail.trim();
  }
@Override
public String toString() {
return "Items [id=" + id + ", name=" + name + ", price=" + price + ", pic=" + pic + ", createtime=" + createtime
+ ", detail=" + detail + "]";
}  
}

解決方法

在springmvc.xml配置文件加入fastjson庫(kù)，代碼如下

<mvc:annotation-driven>
  <mvc:message-converters register-defaults="true">
      <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
      </bean>
  </mvc:message-converters>
</mvc:annotation-driven>

然后問題就解決了

@RequestBody使用方法（將數(shù)據(jù)映射到j(luò)ava對(duì)象上）

將請(qǐng)求的json數(shù)據(jù)映射到@RequestBody 聲明的對(duì)象上

1.請(qǐng)求方式如下

將id,name,age 的值映射到對(duì)象上

2.對(duì)象定義如下

屬性名稱要和json中的名稱對(duì)應(yīng)上

@Getter
@Setter
@ToString
public class UserEntity {
  private Long id;
  private String name;
  private int age;
}

3.可以看到，json數(shù)據(jù)映射到UserEntity里

以上為個(gè)人經(jīng)驗(yàn)，希望能給大家一個(gè)參考，也希望大家多多支持服務(wù)器之家。

原文鏈接：https://blog.csdn.net/qq_37759106/article/details/79828367