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目录
打包问题解决方法在文章末尾
dependencies:依赖关系
在pom.xml的dependencies中加入依赖关系
- <!--mybaties-plus启动器-->
- <dependency>
- <groupId>com.baomidou</groupId>
- <artifactId>mybatis-plus-boot-starter</artifactId>
- <version>3.5.1</version>
- </dependency>
- <!--lombok用于简化实体类开发-->
- <dependency>
- <groupId>org.projectlombok</groupId>
- <artifactId>lombok</artifactId>
- <optional>true</optional>
- </dependency>
- <!--mysql驱动-->
- <dependency>
- <groupId>mysql</groupId>
- <artifactId>mysql-connector-java</artifactId>
- <scope>runtime</scope>
- </dependency>
这里要特别注意我们的springboot工程刚创建的时候是没有添加版本的,有爆红错误,Plugin 'org.springframework.boot:spring-boot-maven-plugin:' not found。
这里只需要加上和开头处和父类版本一样的version即可
然后我们对maven进行刷新,让其安装对应的依赖关系,直到这些爆红的错误消失为止,如果有的错误没有消失(但是我们IDEA中已经安装完了相应的依赖),这个时候我们最好进行重启一下IDEA。
首先区分properties文件和yml文件的不同
properties 使用‘.’来进行分隔
yml 使用‘:’来进行分隔
yml中的一些格式比properties的要求要高。
创建application.yml只需要复制application.properties粘贴到resources中然后修改文件名即可。
- spring.datasource.type=com.zaxxer.hikari.HikariDataSource
- spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
8.0版本以上的mysql需要引用的Driver是:
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
5.0版本以上的mysql需要引用的Driver是:
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
查看springboot使用的mysql版本需要在pom.xml中按ctrl打开mysql查看版本
- spring:
- #配置数据源信息系
- datasource:
- #配置数据源类型
- type: com.zaxxer.hikari.HikariDataSource
- driver-class-name: com.mysql.cj.jdbc.Driver
- #配置连接数据库的个人信息
- url: jdbc:mysql://localhost:3306/mybatis_plus?serverTimezone=GMT%2B8&characterEncoding=utf-8&useSSL=false
- username: root
- password: abc123
SpringBoot 版本低于2.4.3(不含),Mysql驱动版本大于8.0时,需要在url连接串中配置时区,否则会报错java.sql.SQLException: The server time zone value 'Öйú±ê׼ʱ¼ä' is unrecognized or represents more
- package com.atzeren.mybatiesplus;
-
- import org.springframework.boot.SpringApplication;
- import org.springframework.boot.autoconfigure.SpringBootApplication;
-
- @SpringBootApplication
- public class MybatiesplusApplication {
-
- public static void main(String[] args) {
- SpringApplication.run(MybatiesplusApplication.class, args);
- }
-
- }
- package com.atzeren.mybatiesplus.pojo;
-
- import lombok.*;
-
- /**
- * @Program:mybatiesplus
- * @description:pojo
- * @author: jiangzeren
- * @create: 2022-11-01 16
- **/
- @Data
- public class User {
- private Long id;
- private String name;
- private Integer age;
- private String email;
-
- }
打包出错
- C:\Users\jiangzeren\.jdks\corretto-1.8.0_342\bin\java.exe -Dmaven.multiModuleProjectDirectory=D:\IDEAAA\mybatiesplus "-Dmaven.home=D:\IDEAAA\IntelliJ IDEA 2020.3.4\plugins\maven\lib\maven3" "-Dclassworlds.conf=D:\IDEAAA\IntelliJ IDEA 2020.3.4\plugins\maven\lib\maven3\bin\m2.conf" "-Dmaven.ext.class.path=D:\IDEAAA\IntelliJ IDEA 2020.3.4\plugins\maven\lib\maven-event-listener.jar" "-javaagent:D:\IDEAAA\IntelliJ IDEA 2020.3.4\lib\idea_rt.jar=56330:D:\IDEAAA\IntelliJ IDEA 2020.3.4\bin" -Dfile.encoding=GBK -classpath "D:\IDEAAA\IntelliJ IDEA 2020.3.4\plugins\maven\lib\maven3\boot\plexus-classworlds-2.6.0.jar;D:\IDEAAA\IntelliJ IDEA 2020.3.4\plugins\maven\lib\maven3\boot\plexus-classworlds.license" org.codehaus.classworlds.Launcher -Didea.version=2020.3.4 compile
- [INFO] Scanning for projects...
- [INFO]
- [INFO] ----------------------< com.atzeren:mybatiesplus >----------------------
- [INFO] Building mybatiesplus 0.0.1-SNAPSHOT
- [INFO] --------------------------------[ jar ]---------------------------------
- [WARNING] The artifact mysql:mysql-connector-java:jar:8.0.31 has been relocated to com.mysql:mysql-connector-j:jar:8.0.31
- [INFO]
- [INFO] --- maven-resources-plugin:3.2.0:resources (default-resources) @ mybatiesplus ---
- [INFO] Using 'UTF-8' encoding to copy filtered resources.
- [INFO] Using 'UTF-8' encoding to copy filtered properties files.
- [INFO] Copying 2 resources
- [INFO] ------------------------------------------------------------------------
- [INFO] BUILD FAILURE
- [INFO] ------------------------------------------------------------------------
- [INFO] Total time: 1.543 s
- [INFO] Finished at: 2022-11-01T16:20:17+08:00
- [INFO] ------------------------------------------------------------------------
- [ERROR] Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources (default-resources) on project mybatiesplus: Input length = 1 -> [Help 1]
- [ERROR]
- [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
- [ERROR] Re-run Maven using the -X switch to enable full debug logging.
- [ERROR]
- [ERROR] For more information about the errors and possible solutions, please read the following articles:
- [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
-
- Process finished with exit code 1
遇到这一类问题可以参考以下几篇文章Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources_慢来来的博客-CSDN博客_pom文件进入父工程快捷键
看了这几篇博客,发现还是没有什么很大的用处,于是我将尚硅谷的pom.xml打开,复制粘贴到了我的pom.xml中,发现再次刷新maven之后运行成功了。
对比代码发现原来是java版本的问题,把java.version改为1.8即可。
- <?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>
- <parent>
- <groupId>org.springframework.boot</groupId>
- <artifactId>spring-boot-starter-parent</artifactId>
- <version>2.7.5</version>
- <relativePath/> <!-- lookup parent from repository -->
- </parent>
- <groupId>com.atzeren</groupId>
- <artifactId>mybatiesplus</artifactId>
- <version>0.0.1-SNAPSHOT</version>
- <name>mybatiesplus</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</artifactId>
- </dependency>
-
- <dependency>
- <groupId>org.springframework.boot</groupId>
- <artifactId>spring-boot-starter-test</artifactId>
- <scope>test</scope>
- </dependency>
- <!--mybaties-plus启动器-->
- <dependency>
- <groupId>com.baomidou</groupId>
- <artifactId>mybatis-plus-boot-starter</artifactId>
- <version>3.5.1</version>
- </dependency>
- <!--lombok用于简化实体类开发-->
- <dependency>
- <groupId>org.projectlombok</groupId>
- <artifactId>lombok</artifactId>
- <optional>true</optional>
- </dependency>
- <!--mysql驱动-->
- <dependency>
- <groupId>mysql</groupId>
- <artifactId>mysql-connector-java</artifactId>
- <scope>runtime</scope>
- </dependency>
-
-
- </dependencies>
-
- <build>
- <plugins>
- <plugin>
- <groupId>org.springframework.boot</groupId>
- <artifactId>spring-boot-maven-plugin</artifactId>
- <version>2.7.5</version>
- </plugin>
- <plugin>
- <groupId>org.apache.maven.plugins</groupId>
- <artifactId>maven-resources-plugin</artifactId>
- <!--修改版本-->
- <version>3.1.0</version>
- </plugin>
- </plugins>
- </build>
-
- </project>
这只是我遇到的问题,仅对我有效,如果你也是jdk版本默认设置为17或者18也可能会产生这个问题,为了验证是不是jdk产生的影响,我又重新将jdk版本设置为了17,发现仍然出现之前的情况。
正确方法打包之后get、set方法、构造器都会自动创建,,这样的话在实际开发过程中我们就不用这么麻烦了。
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