springboot常见错误

• 错误1：运行项目后报如下错误
  

• 解决方案
  

• 报错2：Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project sb

• 解决方案：在pom.xml中添加如下

<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>
    </configuration>
</plugin>

• 错误3：Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile
• 错误原因：环境配置错误，jdk配置不一致
• 解决方案

# pom.xml
<properties>
<java.version>8</java.version>
</properties>

• 右键 > Project Structure
  
  

• 错误4：Java HotSpot(TM) 64-Bit Server VM warning: Options -Xverify:none and -noverify were deprecated in JDK 13 and will likely be removed in a

• 错误原因：idea环境中jdk版本不一致

• 解决方案
  
  
  
  
  

• 错误5：导入依赖后依赖报红

# 解决方案：可将依赖下载到本地后导入项目
参考：https://www.cnblogs.com/JCodeOcean/p/12516327.html

• 错误6：spring boot项目中启动按钮变灰，或者在启动类中启动没反应

解决方案1：取消idea插件中的groovy
参考csdn：https://blog.csdn.net/qq_26582185/article/details/104724579
 
解决方案2：spring boot项目启动按钮变灰，maven>install

• 错误7：spring boot项目启动时报错：Application run failed

错误原因：当我们spring boot项目中引入了MySQL、mybatis等依赖，且yml中配置了数据源等，但业务类中暂时没有使用到，因为spring boot自动注入的特性，启动项目后会报错，解决方案是暂时排除数据源等配置
解决方案：在启动类添加@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class,HibernateJpaAutoConfiguration.class})

• 错误8：Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.22.1:test (default-test) on

# 解决方案：在pom.xml中添加插件
<plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-surefire-plugin</artifactId>
      <version>2.22.1</version>
      <configuration>
          <skipTests>true</skipTests>
      </configuration>
</plugin>

• 错误9：SpringBoot打包后的jar，执行报错：没有主清单属性

# pom.xml中添加如下
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <version>2.0.3.RELEASE</version>
            <configuration>
                <mainClass>com.hoymin.gmall.gateway.GatewayMain8888</mainClass>
            </configuration>
            <executions>
                <execution>
                    <goals>
                        <goal>repackage</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>