maven的web项目在实践中需要注意的问题_javawebmaven注意事项-优快云博客

本文链接：https://blog.youkuaiyun.com/VICTORY_Q/article/details/129051837

在实践Maven构建的Web项目时，确保mysql-connector-java与Spring框架的依赖版本一致是关键，例如5.2.20.RELEASE。同时，要注意Tomcat7.0不兼容高版本的jackson-databind，可能导致ClassFormatException错误，推荐使用2.9.8版本。

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#maven的web项目在实践中需要注意的问题
##1、下面的四个依赖一定要是相同的版本

<dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.28</version>
</dependency>

<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>5.2.20.RELEASE</version>
</dependency>

<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.2.20.RELEASE</version>
</dependency>

<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.2.20.RELEASE</version>
</dependency>

##2、tomcat7.0不能选择过高版本的依赖，依赖版本过高会报 Unable to process Jar entry [META-INF/versions/11/module-info.class] from Jar [jar:file:/E:/SoftWare/JAVA/Maven/apache-maven-3.5.4/conf/repository/com/fasterxml/jackson/core/jackson-databind/2.13.0-rc1/jackson-databind-2.13.0-rc1.jar!/] for annotations org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19 错误

<dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.8</version>
</dependency>

<dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.9.8</version>
</dependency>

<dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.9.8</version>
</dependency>