一:Struts開發步驟:
1. web項目,引入struts - jar包2. web.xml中,引入struts的核心功能
配置過濾器
3. 開發action
4. 配置action
src/struts.xml
二:詳細配置
1.引入8個jar文件
commons-fileupload-1.2.2.jar 【文件上傳相關包】
commons-io-2.0.1.jar
struts2-core-2.3.4.1.jar 【struts2核心功能包】
xwork-core-2.3.4.1.jar 【Xwork核心包】
ognl-3.0.5.jar 【Ognl表達式功能支持表】
commons-lang3-3.1.jar 【struts對java.lang包的擴展】
freemarker-2.3.19.jar 【struts的標籤模板庫jar文件】
javassist-3.11.0.GA.jar 【struts對字節碼的處理相關jar】
2.web.xml詳細配置
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<!-- 其他攔截器 -->
<!-- 引入struts核心過濾器 -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.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>
3.開發Action(3種方式)
1種:直接繼承ActionSupport
package cn.itcast.a_config;
import com.opensymphony.xwork2.ActionSupport;
public class UserAction extends ActionSupport {
// Action中業務處理方法
public String login() {
System.out.println("UserAction.login()");
return "success";
}
}
2種:繼承Action接口
package cn.itcast.a_config;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionSupport;
public class UserAction implements Action {
// Action中業務處理方法
public String login() {
System.out.println("UserAction.login()");
return "success";
}
@Override
public String execute() throws Exception {
return null;
}
}
3種:不繼承任何類,不實現任何接口
package cn.itcast.a_config;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionSupport;
public class UserAction {
private String userName;
public void setUserName(String userName) {
this.userName = userName;
}
// Action中業務處理方法
public String login() {
System.out.println("UserAction.login()" + userName);
return "login";
}
public String register() {
System.out.println("register()" + userName);
return "register";
}
}
4. 配置action : src/struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<package name="config" namespace="/" extends="struts-default">
<action name="login" class="cn.a_config.UserAction" method="login">
<result name="success">/index.jsp</result>
</action>
</package>
</struts>