Python/Java业务函数/方法的（统一的）返回结构：new_return() 和 Result<T>

Python/Java业务函数/方法的（统一的）返回结构：new_return() 和 Result

作者：AlbertWen 添加时间：2022-07-28 14:30:49 修改时间：2025-04-02 03:44:13 分类：08.Java基础编辑

Python版本

return_util.py

def return_ok(code="200", msg="操作成功", data=None):
    """
   创建 业务函数/方法的（统一的）返回结构
   :param code: 状态码："200"-操作成功， "500"-操作失败
   :param msg: 消息语
   :param data: 返回数据
   :return:
   """
    if data is None:
        data = {}
    return {
        "code": code,
        "msg": msg,
        "data": data
    }
 
 
def return_error(code="500", msg="操作失败", data=None):
    """
   创建 业务函数/方法的（统一的）返回结构
   :param code: 状态码："200"-操作成功， "500"-操作失败
   :param msg: 消息语
   :param data: 返回数据
   :return:
   """
    if data is None:
        data = {}
    return {
        "code": code,
        "msg": msg,
        "data": data
    }

Java版本

package com.wanma.framework_api.model;
 
import cn.hutool.core.map.MapUtil;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.wanma.framework_api.exception.ErrorEnum;
 
import java.util.LinkedHashMap;
import java.util.Map;
 
/**
 * 业务结果类
 */
public class ResJson<T> {
    private static final String CODE_OK = "200";
    private static final String CODE_ERROR = "500";
    private static final String MSG_OK = "操作成功";
    private static final String MSG_ERROR = "操作失败";
 
    private String code = "";
    private String msg = "";
    private Map<String, T> data = new LinkedHashMap<>();
 
    public static <T> ResJson<T> instance() {
        return new ResJson<>();
    }
 
    public String getCode() {
        return this.code;
    }
 
    public ResJson<T> setCode(String code) {
        this.code = code;
        return this;
    }
 
    public String getMsg() {
        return this.msg;
    }
 
    public ResJson<T> setMsg(String msg) {
        this.msg = msg;
        return this;
    }
 
    public Map<String, T> getData() {
        return this.data;
    }
 
    public String getStr(Object key) {
        try {
            return MapUtil.getStr(this.data, key, "");
        } catch (Exception e) {
            e.printStackTrace();
            return "";
        }
    }
 
    public Integer getInt(Object key) {
        try {
            return MapUtil.getInt(this.data, key, 0);
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
 
    public Long getLong(Object key) {
        try {
            return MapUtil.getLong(this.data, key, 0L);
        } catch (Exception e) {
            e.printStackTrace();
            return 0L;
        }
    }
 
    public ResJson<T> setData(Map<String, T> data) {
        this.data = data;
        return this;
    }
 
    public ResJson<T> setData(String key, T value) {
        this.data.put(key, value);
        return this;
    }
 
    public ResJson() {
    }
 
    public ResJson<T> ok() {
        this.code = ResJson.CODE_OK;
 
        if (this.msg.equals("") || this.msg.equals(ResJson.MSG_ERROR)) {
            this.msg = ResJson.MSG_OK;
        }
 
        return this;
    }
 
    public ResJson<T> ok(String msg) {
        this.code = ResJson.CODE_OK;
        this.msg = msg;
        return this;
    }
 
    public ResJson<T> ok(Map<String, T> data) {
        this.code = ResJson.CODE_OK;
        this.data = data;
 
        if (this.msg.equals("") || this.msg.equals(ResJson.MSG_ERROR)) {
            this.msg = ResJson.MSG_OK;
        }
 
        return this;
    }
 
    public ResJson<T> ok(String msg, Map<String, T> data) {
        this.code = ResJson.CODE_OK;
        this.msg = msg;
        this.data = data;
        return this;
    }
 
    public ResJson<T> ok(String code, String msg) {
        this.code = code;
        this.msg = msg;
        return this;
    }
 
    public ResJson<T> ok(String code, String msg, Map<String, T> data) {
        this.code = code;
        this.msg = msg;
        this.data = data;
        return this;
    }
 
    public ResJson<T> error() {
        this.code = ResJson.CODE_ERROR;
 
        if (this.msg.equals("") || this.msg.equals(ResJson.MSG_OK)) {
            this.msg = ResJson.MSG_ERROR;
        }
 
        return this;
    }
 
    public ResJson<T> error(String msg) {
        this.code = ResJson.CODE_ERROR;
        this.msg = msg;
        return this;
    }
 
    public ResJson<T> error(Map<String, T> data) {
        this.code = ResJson.CODE_ERROR;
        this.data = data;
 
        if (this.msg.equals("") || this.msg.equals(ResJson.MSG_OK)) {
            this.msg = ResJson.MSG_ERROR;
        }
 
        return this;
    }
 
    public ResJson<T> error(String msg, Map<String, T> data) {
        this.code = ResJson.CODE_ERROR;
        this.msg = msg;
        this.data = data;
        return this;
    }
 
    public ResJson<T> error(String code, String msg) {
        this.code = code;
        this.msg = msg;
        return this;
    }
 
    public ResJson<T> error(String code, String msg, Map<String, T> data) {
        this.code = code;
        this.msg = msg;
        this.data = data;
        return this;
    }
 
    public ResJson<T> error(ErrorEnum errorEnum) {
        this.code = errorEnum.getErrorCode();
        this.msg = errorEnum.getErrorMsg();
        return this;
    }
 
    @JsonIgnore
    public boolean isOk() {
        return this.code.equals(CODE_OK);
    }
 
    @JsonIgnore
    public boolean isError() {
        return !this.isOk();
    }
 
    /**
     * 输出JSON字符串
     */
    @JsonIgnore
    public String outJson() {
        Map<String, Object> jsonMap = new LinkedHashMap<>();
        jsonMap.put("code", this.code);
        jsonMap.put("msg", this.msg);
        jsonMap.put("data", this.data);
 
        try {
            ObjectMapper mapper = new ObjectMapper();
            return mapper.writeValueAsString(jsonMap);
        } catch (JsonProcessingException e) {
            e.printStackTrace();
        }
 
        return "{\"code\":\"" + this.getCode() + "\",\"msg\":\"" + this.getMsg() + "\", \"data\": \"\"}";
    }
}

参考：

Java的业务操作结果类：Result<T>

【Spring Boot】Java的业务操作结果类：Result<T>

不灭的火

革命尚未成功，同志仍须努力下载JDK17

Python版本

Java版本