SunBlog博客项目-开发日志
2022-Jan-14 (Day 01)
参考笔记：SpringBoot+Vue 项目
Spring Initializer 新建 Maven 项目：
pom.xml添加Maven依赖：
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.76</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.4.3</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.10.10</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>
application.properties 配置：
#server
server.port= 8888
spring.application.name=sunwenhao_blog
# datasource
spring.datasource.url=jdbc:mysql://localhost:3306/blog?useUnicode=true&characterEncoding=UTF-8&serverTimeZone=UTC
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
#mybatis-plus
mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl
mybatis-plus.global-config.db-config.table-prefix=ms_
MySQL 建表：
文章表：
CREATE TABLE `blog`.`ms_article` (
`id` bigint(0) NOT NULL AUTO_INCREMENT,
`comment_counts` int(0) NULL DEFAULT NULL COMMENT '评论数量',
`create_date` bigint(0) NULL DEFAULT NULL COMMENT '创建时间',
`summary` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '简介',
`title` varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '标题',
`view_counts` int(0) NULL DEFAULT NULL COMMENT '浏览数量',
`weight` int(0) NOT NULL COMMENT '是否置顶',
`author_id` bigint(0) NULL DEFAULT NULL COMMENT '作者id',
`body_id` bigint(0) NULL DEFAULT NULL COMMENT '内容id',
`category_id` int(0) NULL DEFAULT NULL COMMENT '类别id',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 25 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
标签表：
CREATE TABLE `blog`.`ms_tag` (
`id` bigint(0) NOT NULL AUTO_INCREMENT,
`article_id` bigint(0) NOT NULL,
`tag_id` bigint(0) NOT NULL,
PRIMARY KEY (`id`) USING BTREE,
INDEX `article_id`(`article_id`) USING BTREE,
INDEX `tag_id`(`tag_id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 1 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
标签表：
CREATE TABLE `blog`.`ms_sys_user` (
`id` bigint(0) NOT NULL AUTO_INCREMENT,
`account` varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '账号',
`admin` bit(1) NULL DEFAULT NULL COMMENT '是否管理员',
`avatar` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '头像',
`create_date` bigint(0) NULL DEFAULT NULL COMMENT '注册时间',
`deleted` bit(1) NULL DEFAULT NULL COMMENT '是否删除',
`email` varchar(128) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '邮箱',
`last_login` bigint(0) NULL DEFAULT NULL COMMENT '最后登录时间',
`mobile_phone_number` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '手机号',
`nickname` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '昵称',
`password` varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '密码',
`salt` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '加密盐',
`status` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '状态',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 16 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
创建Config包以及MybatisPlusConfig类：
package com.sunwenhao.sunblog.config;
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* @author SunWenhao
* @create 2022/1/14
*/
@Configuration
//相关的接口会放在mapper包下，Mybatis会扫描接口生成代理实现类，并且注册到Spring容器中
@MapperScan("com.sunwenhao.sunblog.dao.mapper")
public class MybatisPlusConfig {
//分页插件
//定义拦截器
@Bean
public MybatisPlusInterceptor mybatisPlusInterceptor(){
MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
interceptor.addInnerInterceptor(new PaginationInnerInterceptor());
return interceptor;
}
}
创建WebMVCPlusConfig类：
package com.sunwenhao.sunblog.config;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
/**
* @author SunWenhao
* @create 2022/1/14
*/
public class WebMVCPlusConfig implements WebMvcConfigurer {
@Override
public void addCorsMappings(CorsRegistry registry) {
//跨域配置 允许8080访问8888端口
WebMvcConfigurer.super.addCorsMappings(registry);
registry.addMapping("/**").allowedOrigins("http://localhost:8080");
}
}
第一个功能-文章列表：
首页会展示一个文章列表
接口说明：
返回数据：
{
"success": true,
"code": 200,
"msg": "success",
"data": [
{
"id": 1,
"title": "springboot介绍以及入门案例",
"summary": "通过Spring Boot实现的服务，只需要依靠一个Java类，把它打包成jar，并通过`java -jar`命令就可以运行起来。\r\n\r\n这一切相较于传统Spring应用来说，已经变得非常的轻便、简单。",
"commentCounts": 2,
"viewCounts": 54,
"weight": 1,
"createDate": "2609-06-26 15:58",
"author": "12",
"body": null,
"tags": [
{
"id": 5,
"avatar": null,
"tagName": "444"
},
{
"id": 7,
"avatar": null,
"tagName": "22"
},
{
"id": 8,
"avatar": null,
"tagName": "11"
}
],
"categorys": null
},
{
"id": 9,
"title": "Vue.js 是什么",
"summary": "Vue (读音 /vjuː/，类似于 view) 是一套用于构建用户界面的渐进式框架。",
"commentCounts": 0,
"viewCounts": 3,
"weight": 0,
"createDate": "2609-06-27 11:25",
"author": "12",
"body": null,
"tags": [
{
"id": 7,
"avatar": null,
"tagName": "22"
}
],
"categorys": null
},
{
"id": 10,
"title": "Element相关",
"summary": "本节将介绍如何在项目中使用 Element。",
"commentCounts": 0,
"viewCounts": 3,
"weight": 0,
"createDate": "2609-06-27 11:25",
"author": "12",
"body": null,
"tags": [
{
"id": 5,
"avatar": null,
"tagName": "444"
},
{
"id": 6,
"avatar": null,
"tagName": "33"
},
{
"id": 7,
"avatar": null,
"tagName": "22"
},
{
"id": 8,
"avatar": null,
"tagName": "11"
}
],
"categorys": null
}
]
}
建立dao.pojo
**POJO：：**POJO（Plain Ordinary Java Object）简单的Java对象，实际就是普通JavaBeans，是为了避免和EJB混淆所创造的简称。
使用POJO名称是为了避免和EJB混淆起来, 而且简称比较直接. 其中有一些属性及其getter setter方法的类,没有业务逻辑，有时可以作为VO(value -object)或dto(Data Transform Object)来使用.当然,如果你有一个简单的运算属性也是可以的,但不允许有业务方法,也不能携带有connection之类的方法。
**DAO::**DAO(Data Access Object)是一个数据访问接口，数据访问：顾名思义就是与数据库打交道。夹在业务逻辑与数据库资源中间。
创建Article、SysUser、Tag类：
package com.sunwenhao.sunblog.dao.pojo;
import lombok.Data;
@Data
public class Article {
public static final int Article_TOP = 1;
public static final int Article_Common = 0;
private Long id;
private String title;
private String summary;
private int commentCounts;
private int viewCounts;
/**
* 作者id
*/
private Long authorId;
/**
* 内容id
*/
private Long bodyId;
/**
*类别id
*/
private Long categoryId;
/**
* 置顶
*/
private int weight = Article_Common;
/**
* 创建时间
*/
private Long createDate;
}
package com.sunwenhao.sunblog.dao.pojo;
import lombok.Data;
@Data
public class SysUser {
private Long id;
private String account;
private Integer admin;
private String avatar;
private Long createDate;
private Integer deleted;
private String email;
private Long lastLogin;
private String mobilePhoneNumber;
private String nickname;
private String password;
private String salt;
private String status;
}
package com.sunwenhao.sunblog.dao.pojo;
import lombok.Data;
@Data
public class Tag {
private Long id;
private String avatar;
private String tagName;
}
创建ArticleMapper、SysUserMapper、TagMapper接口：
package com.sunwenhao.sunblog.dao.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.sunwenhao.sunblog.dao.pojo.Article;
/**
* @author SunWenhao
* @create 2022/1/14
*/
public interface ArticleMapper extends BaseMapper<Article> {
//同理创建SysUserMapper、TagMapper接口
}
创建controller层：
controller层。控制器，导入service层，因为service中的方法是我们使用到的，controller通过接收前端传过来的参数进行业务操作，在返回一个指定的路径或者数据表。
package com.sunwenhao.sunblog.controller;
import com.sunwenhao.sunblog.vo.Result;
import com.sunwenhao.sunblog.vo.params.PageParams;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.nio.channels.Pipe;
/**
* @author SunWenhao
* @create 2022/1/14
*/
//首页文章列表
@RestController
@RequestMapping("articles")
public class ArticleController {
//接口是post请求方式
@PostMapping
public Result listArticle(@RequestBody PageParams pageParams){
return articleService.listArticle(pageParams);
}
}
创建vo包以及PageParams类：
package com.sunwenhao.sunblog.vo.params;
import lombok.Data;
/**
* @author SunWenhao
* @create 2022/1/14
*/
@Data
public class PageParams {
private int page = 1;
private int pageSize = 10;
}
定义统一返回值：
package com.sunwenhao.sunblog.vo;
import lombok.AllArgsConstructor;
import lombok.Data;
/**
* @author SunWenhao
* @create 2022/1/14
*/
@Data
@AllArgsConstructor
public class Result {
private boolean success;
private int code;
private String msg;
private Object data;
public static Result success(Object data){
return new Result(true,200,"success",data);
}
public static Result fail(int code,String msg){
return new Result(false,code,msg,null);
}
}
创建service层
service层主要是写业务逻辑方法，service层经常要调用dao层（也叫mapper层）的方法对数据进行增删改查的操作。
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