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在使用MyBatis-Plus创建Spring Boot工程时,可能会遇到各种打包错误。这些错误可能源于依赖冲突、配置错误、插件问题等多种原因。本文将详细探讨这些问题的根源,并提供相应的解决方案,帮助开发者顺利打包和部署Spring Boot应用。
在开始之前,确保你已经安装了以下工具:
首先,使用Spring Initializr创建一个新的Spring Boot工程。选择以下依赖:
生成项目后,导入到你的IDE中。
在打包过程中,可能会遇到依赖冲突的问题,导致打包失败。常见的错误信息包括:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project mybatisplus-demo: Compilation failure
mvn dependency:tree
命令查看项目的依赖树,找出冲突的依赖。pom.xml
中排除冲突的依赖。例如: <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>
打包时可能会遇到插件配置错误,导致打包失败。常见的错误信息包括:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.22.2:test (default-test) on project mybatisplus-demo: There are test failures.
pom.xml
中的插件配置正确。例如: <build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.2</version>
<configuration>
<skipTests>true</skipTests>
</configuration>
</plugin>
</plugins>
</build>
mvn clean package -DskipTests
打包时可能会遇到资源文件缺失的问题,导致打包失败。常见的错误信息包括:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources (default-resources) on project mybatisplus-demo: Input length = 1
pom.xml
中配置资源插件,确保资源文件被正确打包。例如: <build>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
</build>
打包时可能会遇到数据库配置错误,导致打包失败。常见的错误信息包括:
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.4.5:run (default-cli) on project mybatisplus-demo: Application finished with exit code: 1
application.properties
或application.yml
中的数据库配置正确。例如: spring.datasource.url=jdbc:mysql://localhost:3306/mydb
spring.datasource.username=root
spring.datasource.password=root
打包时可能会遇到MyBatis-Plus配置错误,导致打包失败。常见的错误信息包括:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project mybatisplus-demo: Compilation failure
application.properties
或application.yml
中的MyBatis-Plus配置正确。例如: mybatis-plus.mapper-locations=classpath*:mapper/*.xml
mybatis-plus.type-aliases-package=com.example.demo.entity
BaseMapper
,并且@Mapper
注解正确使用。打包时可能会遇到打包文件过大的问题,导致部署困难。常见的错误信息包括:
[WARNING] The artifact mybatisplus-demo:jar:0.0.1-SNAPSHOT has a large size (100MB)
pom.xml
中排除不必要的依赖,减少打包文件大小。spring-boot-maven-plugin
的瘦身功能,减少打包文件大小。例如: <build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<executable>true</executable>
<layers>
<enabled>true</enabled>
</layers>
</configuration>
</plugin>
</plugins>
</build>
打包后可能会遇到无法运行的问题,导致应用无法启动。常见的错误信息包括:
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.4.5:run (default-cli) on project mybatisplus-demo: Application finished with exit code: 1
@SpringBootApplication
注解正确使用。打包后可能会遇到无法访问数据库的问题,导致应用无法正常运行。常见的错误信息包括:
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.4.5:run (default-cli) on project mybatisplus-demo: Application finished with exit code: 1
打包后可能会遇到无法访问静态资源的问题,导致应用无法正常运行。常见的错误信息包括:
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.4.5:run (default-cli) on project mybatisplus-demo: Application finished with exit code: 1
application.properties
或application.yml
中配置静态资源路径。例如: spring.resources.static-locations=classpath:/static/
打包后可能会遇到无法访问API的问题,导致应用无法正常运行。常见的错误信息包括:
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.4.5:run (default-cli) on project mybatisplus-demo: Application finished with exit code: 1
在使用MyBatis-Plus创建Spring Boot工程时,可能会遇到各种打包错误。本文详细探讨了这些问题的根源,并提供了相应的解决方案。通过仔细检查依赖、配置、插件和资源文件,开发者可以顺利打包和部署Spring Boot应用。
pom.xml
<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>
<groupId>com.example</groupId>
<artifactId>mybatisplus-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>mybatisplus-demo</name>
<description>Demo project for Spring Boot with MyBatis-Plus</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.5</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.4.3.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
application.properties
spring.datasource.url=jdbc:mysql://localhost:3306/mydb
spring.datasource.username=root
spring.datasource.password=root
mybatis-plus.mapper-locations=classpath*:mapper/*.xml
mybatis-plus.type-aliases-package=com.example.demo.entity
package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class MybatisplusDemoApplication {
public static void main(String[] args) {
SpringApplication.run(MybatisplusDemoApplication.class, args);
}
}
package com.example.demo.entity;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;
@Data
@TableName("user")
public class User {
private Long id;
private String name;
private Integer age;
private String email;
}
package com.example.demo.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.example.demo.entity.User;
public interface UserMapper extends BaseMapper<User> {
}
package com.example.demo.service;
import com.baomidou.mybatisplus.extension.service.IService;
import com.example.demo.entity.User;
public interface UserService extends IService<User> {
}
package com.example.demo.service.impl;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.demo.entity.User;
import com.example.demo.mapper.UserMapper;
import com.example.demo.service.UserService;
import org.springframework.stereotype.Service;
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {
}
package com.example.demo.controller;
import com.example.demo.entity.User;
import com.example.demo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
@RequestMapping("/user")
public class UserController {
@Autowired
private UserService userService;
@GetMapping("/list")
public List<User> list() {
return userService.list();
}
}
通过本文的详细讲解和示例代码,相信你已经掌握了如何解决MyBatis-Plus创建Spring Boot工程打包错误的方法。希望这些内容能够帮助你在实际开发中顺利打包和部署Spring Boot应用。如果你有任何问题或建议,欢迎在评论区留言讨论。
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