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SpringBoot实战项目（二）--项目目录结构及定义公共基础类

分类: IT文章 • 2023-11-14 08:58:31

项目结构

SpringBoot实战项目（二）--项目目录结构及定义公共基础类

 分页

package com.beilin.result;

import lombok.Data;
import lombok.extern.slf4j.Slf4j;

import java.io.Serializable;

/**
 * 分页查询参数
 */
@Slf4j
@Data
public class Page implements Serializable {

    private static final long serialVersionUID = 7328071045193618467L;
    private Integer page;//当前页
    private Integer limit;//每页显示多少条
    private Integer offset;//数据库偏移量

    public void countOffset() {
        if (null == this.page || null == this.limit) {
            this.offset = 0;
            return;
        }
        this.offset = (this.page - 1) * this.limit;
    }


    @Override
    public String toString() {
        return "PageTableRequest{" +
                "page=" + page +
                ", limit=" + limit +
                ", offset=" + offset +
                '}';
    }
}
Page

Json统一结果返回类 跟 公共请求信息

package com.beilin.result;

import lombok.Data;

import java.io.Serializable;
import java.util.List;

@Data
public class Results<T>  implements Serializable {

    int count;//数据数量
    Integer code;//代码
    String msg;//信息
    List<T> datas;//返回数据
    T data;//任何类型条件

    public Results() {
    }
    public Results(Integer code, String msg) {
        super();
        this.code = code;
        this.msg = msg;
    }


    public Results(Integer code, String msg, T data, Integer count, List<T> datas) {
        this.code = code;
        this.msg = msg;
        this.data = data;
        this.count = count;
        this.datas = datas;
    }


    /* 无数据传输的 成功返回 */
    public static <T> Results<T> success() {
        return new Results<T>( ResponseCode.SUCCESS.getCode(),  ResponseCode.SUCCESS.getMessage());
    }

    public static <T> Results<T> success(String msg) {
        return new Results<T>(ResponseCode.SUCCESS.getCode(), msg);
    }

    public static <T> Results<T> success(ResponseCode resultCode) {
        return new Results<T>( resultCode.getCode(),  resultCode.getMessage());
    }

    /* 单个数据传输的 成功返回 */
    public static <T> Results<T> success(T data) {
        return new Results<T>( ResponseCode.SUCCESS.getCode(),  ResponseCode.SUCCESS.getMessage(), data, 0, null);
    }
     public static <T> Results<T> success( List<T> datas) {
        return new Results<T>(ResponseCode.TABLE_SUCCESS.getCode(),ResponseCode.SUCCESS.getMessage(),null,0,datas);
    }

    public static <T> Results<T> success(String msg, T data) {
        return new Results<T>(ResponseCode.SUCCESS.getCode(), msg, data, 0, null);
    }

    public static <T> Results<T> success(ResponseCode resultCode, T data) {
        return new Results<T>( resultCode.getCode(),  resultCode.getMessage(), data, 0, null);
    }

    /* 分页数据传输的 成功返回 */
    public static <T> Results<T> success(Integer count, List<T> datas) {
        return new Results<T>(ResponseCode.TABLE_SUCCESS.getCode(),ResponseCode.SUCCESS.getMessage(),null,count, datas);
    }

    public static <T> Results<T> success(String msg, Integer count, List<T> datas) {
        return new Results<T>(ResponseCode.TABLE_SUCCESS.getCode(), msg, null, count, datas);
    }

    public static <T> Results<T> success(ResponseCode resultCode, Integer count, List<T> datas) {
        return new Results<T>( resultCode.getCode(),  resultCode.getMessage(), null, count, datas);
    }
    /* 无数据传输的 失败返回 */
    public static <T> Results<T> failure() {
        return new Results<T>( ResponseCode.FAIL.getCode(), ResponseCode.FAIL.getMessage());
    }

    public static <T> Results<T> failure(ResponseCode resultCode) {
        return new Results<T>( resultCode.getCode(),  resultCode.getMessage());
    }

    public static <T> Results<T> failure(Integer code, String msg) {
        return new Results<T>( code,  msg);
    }

    public static Results ok() {
        return new Results();
    }

}
Results 
 1 package com.beilin.result;
 2 
 3 public enum  ResponseCode {
 4 
 5     // 公共请求信息
 6     SUCCESS(200, "请求成功"),
 7     TABLE_SUCCESS(0, "请求成功"),
 8     FAIL(500, "请求失败，请联系实训邦小姐姐"),
 9     PARAMETER_MISSING(600,"参数缺失"),
10     UNAUTHORIZED(401,"未授权"),
11     // ..一真往后面加
12 
13     //用户信息
14     //5000100 - 5000200
15     USERNAME_REPEAT(5000100,"用户名已存在"),
16     PHONE_REPEAT(5000101,"手机号已存在"),
17     EMAIL_REPEAT(5000102,"邮箱已存在"),
18     //用户-角色
19     //5000201 - 5000300
20     USER_ROLE_NO_CLEAR(5000201,"该角色存在用户关联，无法删除")
21 
22 ;
23     private Integer code;
24     
25     private String message;
26     
27     ResponseCode(Integer code, String message) {
28         this.code = code;
29         this.message = message;
30     }
31 
32     public Integer getCode() {
33         return code;
34     }
35 
36     public void setCode(Integer code) {
37         this.code = code;
38     }
39 
40     public String getMessage() {
41         return message;
42     }
43 
44     public void setMessage(String message) {
45         this.message = message;
46     }
47 
48     public static String getMessage(String name) {
49         for (ResponseCode item : ResponseCode.values()) {
50             if (item.name().equals(name)) {
51                 return item.message;
52             }
53         }
54         return null;
55     }
56 
57     public static Integer getCode(String name) {
58         for (ResponseCode item : ResponseCode.values()) {
59             if (item.name().equals(name)) {
60                 return item.code;
61             }
62         }
63         return null;
64     }
65 }
ResponseCode

定义页面跳转共用控制器

 1 package com.beilin.controller;
 2 
 3 import org.springframework.stereotype.Controller;
 4 import org.springframework.web.bind.annotation.RequestMapping;
 5 import org.springframework.web.servlet.ModelAndView;
 6 
 7 @Controller
 8 @RequestMapping("${api-url}")
 9 public class ApiController {
10 
11     @RequestMapping("/getPage")
12     public ModelAndView getPage(ModelAndView model,String pageName){
13         model.setViewName(pageName);
14         return model;
15     }
16 
17 }
ApiController

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