关于Struts2.3.28配置出现的问题:Dispatcher initialization failed

最近刚学到Struts2框架,搭建环境的时候老是报莫名其妙的错误,然后谷歌了很久,愣是没找到答案,相近的答案都是说导包不全,后面证实,也的确是这样,但是网上的说法都是针对Struts2.3以下的,所以说的不完全对,捣鼓了一下终于明白了,原来我用的是Struts2.3.28,必须要导入asm的相关jar,如果你用的也是2.3.28,那就得注意了;

Struts2.3.28正确的基本配置

Struts2.3.28正确的基本配置(maven,推荐)

<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2.1-b03</version>
</dependency>

<!-- mysql connector -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.30</version>
</dependency>

<!-- Struts2.3.28 -->
<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.3</version>
</dependency>
<dependency>
<groupId>asm</groupId>
<artifactId>asm-commons</artifactId>
<version>3.3</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.2</version>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>2.3.22</version>
</dependency>
<dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.11.0.GA</version>
</dependency>
<dependency>
<groupId>ognl</groupId>
<artifactId>ognl</artifactId>
<version>3.0.13</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-convention-plugin</artifactId>
<version>2.3.28</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>2.3.28</version>
</dependency>
<dependency>
<groupId>org.apache.struts.xwork</groupId>
<artifactId>xwork-core</artifactId>
<version>2.3.28</version>
</dependency>
</dependencies>