Controller返回实体

package com.hq.schoolcj.util;
import com.hq.schoolcj.common.SimplePageInfo;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
/**
 * 返回数据
 */
@ApiModel(value = "返回类")
@Data
public class R<T> {
    @ApiModelProperty(value = "code")
    private Integer code;
    @ApiModelProperty(value = "描述")
    private String msg;
    private T data;
    private SimplePageInfo pageInfo;
}

package com.hq.schoolcj.common;
import lombok.Data;
@Data
public class SimplePageInfo {
    int pageSize;
    int curPage;
    long total;
    int pageCount;
    public SimplePageInfo(int pageSize, int curPage, long total, int pageCount) {
        this.pageSize = pageSize;
        this.curPage = curPage;
        this.total = total;
        this.pageCount = pageCount;
    }
}

package com.hq.schoolcj.util;
public class RUtils {
    public static R sucess() {
        R resultVO = new R();
        resultVO.setCode(200);
        resultVO.setMsg("操作成功");
        return resultVO;
    }
    public static R sucess(Object object) {
        R resultVO = new R();
        resultVO.setCode(200);
        resultVO.setMsg("操作成功");
        if (object instanceof Page) {
            resultVO.setData(((Page) object).getData());
            resultVO.setPageInfo(((Page) object).getPageInfo());
        } else {
            resultVO.setData(object);
        }
        return resultVO;
    }
    public static R sucess(Integer code, String msg) {
        R resultVO = new R();
        resultVO.setCode(code);
        resultVO.setMsg(msg);
        return resultVO;
    }
    public static R error() {
        R resultVO = new R();
        resultVO.setCode(500);
        resultVO.setMsg("服务器异常");
        return resultVO;
    }
    public static R error(Integer code, String msg) {
        R resultVO = new R();
        resultVO.setCode(code);
        resultVO.setMsg(msg);
        return resultVO;
    }
    public static R error(Integer code, String msg, Object data) {
        R resultVO = new R();
        resultVO.setCode(code);
        resultVO.setMsg(msg);
        resultVO.setData(data);
        return resultVO;
    }
}