Spring Boot排错记录

因为使用Result类封装返回的数据，但是发送请求之后终端一直报

WARN Could not find acceptable representation

前端显示406，百度两天无果

    "status": 406,
    "error": "Not Acceptable",

然后开始逐一排错，测试类里面挨个测试了Mapper跟ServiceImpl，返回结果均是正常的

后来把矛头指向了Controller层，但是Debug的流程没有一点问题，但是返回结果是个Result

有点不解，我的请求层是这样的

@RestController
@RequestMapping("/people")
public class PeopleController{
``
    @Autowired
    PeopleService peopleService;

    @GetMapping
    public Result selectAll() {
        List<People> people = peopleService.getAll();
        return new Result(people);
    }
}

我的Result类是这样的

public class Result{
    public final static String Succeed_Code="200";
    public final static String Fail_Code="400";

    private String code;
    private String msg;
    private Object data; 
    public Result(Object data) {
        this.code = Succeed_Code;
        this.data=data;
    }
}

百度给出的解决方案就是因为我Controller层用了@RestController注解，但是返回结果不是JSON，我尝试在pom里面加上fastjson，后面发现其实Spring MVC的依赖里已经包含了一个JSON的依赖

经过一天多的摸索，终于找到了解决方案

Result类修改如下

@Data
public class Result{
    public final static String Succeed_Code="200";
    public final static String Fail_Code="400";

    private String code;
    private String msg;
    private Object data;

    public static Result success(Object data){
        Result result = new Result();
        result.setCode(Succeed_Code);
        result.setData(data);
        result.setMsg("操作成功");
        return result;
    }
}

Controller修改如下

@RestController
@RequestMapping("/people")
public class PeopleController{

    @Autowired
    PeopleService peopleService;

    @GetMapping
    public Result selectAll() {
        List<People> people = peopleService.getAll();
        return Result.success(people);
    }
}

不是很理解为什么这样会出错