1. 创建项目

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2. 创建好之后的项目结构

添加依赖

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创建文件夹

设置文件夹类型

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指定java文件夹的类型为Sources
指定resources文件夹类型为Resources

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3. 书写项目

CustomerAction

public class CustomerAction extends ActionSupport {

    private Long custId;

    public Long getCustId() {
        return custId;
    }

    public void setCustId(Long custId) {
        this.custId = custId;
    }


    public String findCustomerById(){

        System.out.println("前端传过来的客户id是："+custId);

        return SUCCESS;
    }


}

struts.xml

<struts>

    <package name="customer" namespace="/" extends="struts-default">

        <action name="CustomerAction" class="web.CustomerAction" method="findCustomerById">
            <result name="success">/info.jsp</result>
        </action>

    </package>
</struts>

web.xml


<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <!--引入核心过滤器-->
  <filter>
    <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

最后在浏览器进行请求就可以了