SpringBoot+Mybatis+MySql增删改查自我小结
- 本项目postman各操作截图
-
- 注意点
-
- 1.数据库表在创建时未设置ID自增,等到项目完成后才设置id自增,可能在用本项目做添加操作时不成功
- 2.postman一直报502proxy error错误时,可能需要关闭防火墙,然后重启postman
- 3.@Options(useGeneratedKeys = true, keyProperty = "id") 在本项目中可以返回插入的自增ID值,若未添加此行代码,数据库中插入数据成功,id也自增,但页面不会返回本条数据的ID值
- 4. @Insert("INSERT INTO USERINFO (name,address) VALUES(#{name},#{address})") SQL语句应大写,但此条语句中涉及到字段名时必须小写,否则报无具体字段getter方法的错误,猜测为使用对象包装的原因,有知道的朋友可以下方留言解答,谢谢!
项目结构图

pom.xml文件
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.5.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.persistence</groupId&