JsonView

JsonView类为Controller中返回json数据的公共类，示例如下：

package com.test.web.view;

import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;

import java.util.HashMap;
import java.util.Map;

/**
 * 返回给前端的视图,json格式
 * @since 2020-12-31 10:54:25
 */
@ApiModel("JsonView")
@Data
public class JsonView {

    public static final int SUCCESSS_CODE = 0;

    public static final int ERROR_CODE = 1;


    // 返回码
    @ApiModelProperty("返回码,默认0正常返回,1错误返回")
    private int returnCode;

    // 返回信息
    @ApiModelProperty("返回说明信息,一般错误信息才会有")
    private String returnMsg;

    // 返回数据
    @ApiModelProperty("返回数据")
    private Map<String, Object> returnData = new HashMap<>(8);


    public JsonView() {
        returnCode = SUCCESSS_CODE;
        returnMsg = "";
    }

    public JsonView(int returnCode, String returnMsg) {
        this.returnCode = returnCode;
        this.returnMsg = returnMsg;
    }

    /**
     * 成功，有data数据
     */
    public static JsonView suc(String key, Object data) {
        JsonView jv = new JsonView();
        jv.setReturnCode(SUCCESSS_CODE);
        jv.add(key, data);
        return jv;
    }

    public static JsonView suc(String returnMsg) {
        JsonView jv = new JsonView();
        jv.setReturnCode(SUCCESSS_CODE);
        jv.setReturnMsg(returnMsg);
        return jv;
    }

    public static JsonView suc() {
        JsonView jv = new JsonView();
        jv.setReturnCode(SUCCESSS_CODE);
        return jv;
    }


    /**
     * 失败
     */
    public static JsonView fail(String returnMsg) {
        JsonView jv = new JsonView();
        jv.setReturnCode(ERROR_CODE);
        jv.setReturnMsg(returnMsg);
        return jv;

    }

    /**
     * 失败
     */
    public static JsonView fail(int returnCode, String returnMsg) {
        JsonView jv = new JsonView();
        jv.setReturnCode(returnCode);
        jv.setReturnMsg(returnMsg);
        return jv;
    }

    public void add(String key, Object value) {
        returnData.put(key, value);
    }


}

返回page

return JsonView.suc("page", service.pageResult(queryParam));

返回list

return JsonView.suc("list",service.list(id));

返回对象

return JsonView.suc(“user”, service.getResultById(id));

返回消息

return JsonView.suc("新增成功");