Struts 1.x + Spring 整合實戰：從零建構登入範例專案

執行環境

• Eclipse 3.2 + MyEclipse GA 5.0
• Apache Tomcat 5.5.20
• Struts 1.2 / Spring 1.2

專案結構

Welcome_SS/
├── WebRoot/
│   ├── index.jsp
│   ├── login.jsp
│   ├── reinput_blank.jsp
│   ├── reinput_error.jsp
│   ├── success.jsp
│   └── WEB-INF/
│       ├── struts-config.xml
│       ├── web.xml
│       └── classes/applicationContext.xml
└── src/
    └── com/yourcompany/struts/
        ├── action/LoginAction.java
        └── form/LoginForm.java

關鍵配置檔

struts-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC
  "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"
  "https://struts.apache.org/dtds/struts-config_1_2.dtd">
<struts-config>
    <form-beans>
        <form-bean name="loginForm" type="com.yourcompany.struts.form.LoginForm"/>
    </form-beans>

    <action-mappings>
        <action path="/login"
              type="org.springframework.web.struts.DelegatingActionProxy"
              name="loginForm"
              scope="request"
              input="/login.jsp">
            <forward name="success" path="/success.jsp"/>
            <forward name="reinput_blank" path="/reinput_blank.jsp"/>
            <forward name="reinput_error" path="/reinput_error.jsp"/>
        </action>
    </action-mappings>

    <!-- Spring 整合外掛 -->
    <plug-in className="org.springframework.web.struts.ContextLoaderPlugIn">
        <set-property property="contextConfigLocation" value="/WEB-INF/classes/applicationContext.xml"/>
    </plug-in>
</struts-config>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
  "https://www.springframework.org/dtd/spring-beans.dtd">
<beans>
    <bean name="/login" class="com.yourcompany.struts.action.LoginAction">
        <property name="message"><value>Welcome_</value></property>
    </bean>
</beans>

核心類別

LoginForm.java

package com.yourcompany.struts.form;
import org.apache.struts.action.ActionForm;

public class LoginForm extends ActionForm {
    private String username;
    private String password;
    // getter/setter 略
}

LoginAction.java

package com.yourcompany.struts.action;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import com.yourcompany.struts.form.LoginForm;

public class LoginAction extends Action {
    private String message; // Spring 注入
    public void setMessage(String message) { this.message = message; }
    public String getMessage() { return message; }

    public ActionForward execute(ActionMapping mapping, ActionForm form,
                                 HttpServletRequest request, HttpServletResponse response) {
        LoginForm f = (LoginForm) form;
        if ("".equals(f.getUsername()) || "".equals(f.getPassword())) {
            return mapping.findForward("reinput_blank");
        }
        if ("success".equals(f.getUsername()) && "success".equals(f.getPassword())) {
            request.setAttribute("message", getMessage() + f.getUsername());
            return mapping.findForward("success");
        }
        return mapping.findForward("reinput_error");
    }
}

頁面檔案重點

• login.jsp：表單 action="login.do" 對應 /login 路徑。
• reinput_blank.jsp / reinput_error.jsp：顯示錯誤訊息並保留輸入框。
• success.jsp：用 <%=request.getAttribute("message")%> 顯示歡迎訊息。

部署與啟動

1. Tomcat server.xml 新增 <Context path="/wess" docBase=".../Welcome_SS/WebRoot" reloadable="true"/>
2. MyEclipse 啟動 Tomcat。
3. 瀏覽器訪問 https://localhost:8080/wess → 點擊登入 → 帳密皆輸入 success 即可成功。