springboot 框架下

提供接口，来获取JSON数据，之前没接触过这个 现在有蒙蔽 ， 最好有个Demo 谢谢

https://www.cnblogs.com/stillcoolme/p/7678883.html

先写个工具类
public class Result {

private boolean flag;
private Integer code;
private String message;
private Object data;

public Result() {
}

public Result(boolean flag, Integer code, String message) {
    this.flag = flag;
    this.code = code;
    this.message = message;
}

public Result(boolean flag, Integer code, String message, Object data) {
    this.flag = flag;
    this.code = code;
    this.message = message;
    this.data = data;
}

public boolean isFlag() {
    return flag;
}

public void setFlag(boolean flag) {
    this.flag = flag;
}

public Integer getCode() {
    return code;
}

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

public String getMessage() {
    return message;
}

public void setMessage(String message) {
    this.message = message;
}

public Object getData() {
    return data;
}

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

}

再写个controller
@RestController
@CrossOrigin
@RequestMapping("/label")
public class LabelController {
@Autowired
private LabelService labelService;

@RequestMapping(method = RequestMethod.GET)
public Result findAll(){
    return new Result(true, StatusCode.OK, "查询成功", labelService.findAll());
}