制作分析

我們要實現一個模塊的增刪改查

實際開發中mybatisplus用的不多，他只能對沒有外鍵的單表進行簡單的查詢

但在這個案例中我們還是選擇mybatisplus開發

模塊創建

我們把所有服務器都放在一起

就不用前后端分離

我們嘗試用后端開發進行全棧開發

新建項目添加依賴

spring mvc 和 mySQL

添加依賴

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.bigdata1421</groupId><artifactId>ssmp</artifactId><version>0.0.1-SNAPSHOT</version><name>ssmp</name><description>ssmp</description><properties><java.version>1.8</java.version><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><spring-boot.version>2.6.13</spring-boot.version></properties><dependencies><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.5.7</version></dependency><!--Mybatis-plus的依賴--><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.4.3</version></dependency><!--druid的依賴--><dependency><groupId>com.alibaba</groupId><artifactId>druid-spring-boot-starter</artifactId><version>1.2.6</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>com.mysql</groupId><artifactId>mysql-connector-j</artifactId><scope>runtime</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><!-- 導入lombok的依賴 --><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><dependency><groupId>org.xmlunit</groupId><artifactId>xmlunit-core</artifactId></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-dependencies</artifactId><version>${spring-boot.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.8.1</version><configuration><source>1.8</source><target>1.8</target><encoding>UTF-8</encoding></configuration></plugin><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>${spring-boot.version}</version><configuration><mainClass>com.bigdata1421.ssmp.SsmpApplication</mainClass><skip>true</skip></configuration><executions><execution><id>repackage</id><goals><goal>repackage</goal></goals></execution></executions></plugin></plugins></build></project>

改端口號

小結

開發實體類

開發實體類

用lombok快速開發實體類

實體類通常放在domain包下

首先我們在pom配置文件里面導入lombok的坐標

一個總注解

@Data 注解包含的有set get 還有toString hashcode equals方法

這樣寫才是完整的

package com.bigdata1421.ssmp.domain;import lombok.*;
import org.springframework.context.annotation.Configuration;// lombok開發 用注解封裝實體類@Data
@NoArgsConstructor
@Configuration
@Getter
public class User {// 定義屬性private Integer id;private String name;private Integer age;private Integer gender;
}

小結