问题描述

通过PostMan访问接口写入数据成功，但是返回结果却是406。
控制台返回：

2023-11-19 09:35:26.303  WARN 13172 --- [nio-8080-exec-3] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation]

PostMan返回：

{
    "timestamp": "2023-11-19T01:35:26.304+00:00",
    "status": 406,
    "error": "Not Acceptable",
    "path": "/order/save"
}

问题分析

经排查发现接口返回类R中没有实现getter和setter。

解决办法

方法一

1. 添加lombok依赖。

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
</dependency>

2. 添加注解@Data。

@Data
public class R<T> implements Serializable {

    private static final long serialVersionUID = 1L;

    private boolean success;

    private String msg;

    private int code;

    private T data;
}

方法二

在R实体类中添加getter和setter方法。

public class R<T> implements Serializable {

    private static final long serialVersionUID = 1L;

    private boolean success;

    private String msg;

    private int code;

    private T data;

    public boolean isSuccess() {
        return success;
    }

    public void setSuccess(boolean success) {
        this.success = success;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }
}