如何使用execute方法

Question

<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" 
      "http://struts.apache.org/dtds/struts-config_1_3.dtd"> 

<struts-config> 

    <form-beans> 
     <form-bean name="registerform" type="com.register.actions.DynaActionForm"> 

      <form-property name="emailid" type=""></form-property> 
      <form-property name="password" type=""></form-property> 
      <form-property name="cpassword" type=""></form-property> 
      <form-property name="firstname" type=""></form-property> 
      <form-property name="lastname" type=""></form-property> 
      <form-property name="gender" type=""></form-property> 
      <form-property name="submitError" type=""></form-property> 


     </form-bean> 
    </form-beans> 

    <action-mappings> 
     <action path="/doRegister" type="com.register.actions.UserRegistrationAction" 
      name="registerform" scope="request" validate="true" input="input"> 
      <forward name="input" path="/index.jsp" /> 
      <forward name="success" path="/welcome.jsp" /> 
      <forward name="failure" path="/index.jsp" /> 
     </action> 

    </action-mappings> 

    <controller inputForward="true" /> 
    <message-resources parameter="com.register.util.ApplicationResources" /> 
    <plug-in className="org.apache.struts.validator.ValidatorPlugIn"> 
     <set-property property="pathnames" 
      value="/org/apache/struts/validator/validator-rules.xml, 
          /WEB-INF/validation.xml" /> 
     <set-property property="stopOnFirstError" value="true" /> 
    </plug-in> 
</struts-config> 

這是我的DynaAction形式

package com.register.model; 

    import java.sql.Connection; 
    import java.sql.PreparedStatement; 

    import com.register.util.ConnectionUtils; 
    import com.register.util.DbUtils; 

    public class UserRegistration extends User{ 

     private static final long serialVersionUID = 1L; 

     public boolean newuserregistration() throws Exception 
     { 
      PreparedStatement psUserRegistration = null; 
      String sqlUserRegistration = null; 

      boolean isRegistered = false; 

      Connection conn = ConnectionUtils.getConnection(); 

      sqlUserRegistration = "insert into user_master(sEmail, sPassword, sFirstName," + 
            " sLastName, cGender, iUserType, sCreatedDate, cStatus)" + 
            " values(?,md5(?),?,?,?,1,sysdate(),'A')"; 

      try{ 
       psUserRegistration = conn.prepareStatement(sqlUserRegistration); 
       psUserRegistration.setString(1, this.getEmail()); 
       psUserRegistration.setString(2, this.getPassword()); 
       psUserRegistration.setString(3, this.getFirstName()); 
       psUserRegistration.setString(4, this.getLastName()); 
       psUserRegistration.setString(5, this.getGender()); 
       psUserRegistration.executeUpdate(); 

       isRegistered=true; 
      } 
      catch(Exception e) 
      { 
       String errorMessage=e.getMessage(); 
       e.printStackTrace(); 
       if(errorMessage.indexOf("Duplicate entry")>=0) 
       { 
        this.setDbError("error"); 
       } 
       isRegistered=false; 
       e.printStackTrace(); 
      } 
      DbUtils.close(psUserRegistration, conn); 

      return isRegistered; 
     } 
    } 

This is database connection class for all . 





package com.register.actions; 

import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 

import org.apache.struts.action.Action; 
import org.apache.struts.action.ActionForm; 
import org.apache.struts.action.ActionForward; 
import org.apache.struts.action.ActionMapping; 
import org.apache.struts.action.ActionMessage; 
import org.apache.struts.action.ActionMessages; 
import org.apache.struts.action.DynaActionForm; 

import com.register.model.UserRegistration; 

public class UserRegistrationAction extends Action{ 
    public ActionForward execute(ActionMapping mapping, ActionForm form, 
      HttpServletRequest request, HttpServletResponse response) 
      throws Exception { 

     boolean action_perform = false; 
     String action_target; 

     UserRegistration u = new UserRegistration(); 

     ActionMessages errors_mesg = new ActionMessages(); 

     //UserRegisterForm uf = (UserRegisterForm) form; 


     DynaActionForm uf=(DynaActionForm) form; 
     return null; 

    } 
} 

這是Action類註冊到數據庫用戶信息：我想用戶詳細信息註冊到數據庫，請告訴我，我怎麼會寫代碼用於向數據庫註冊用戶細節。登記工作finewith ActionForm的，但我要創建使用DynaActionForm的，請幫助我，我的新嘗試學習Struts框架

Answer 1

package com.register.actions; 

import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 

import org.apache.struts.action.Action; 
import org.apache.struts.action.ActionForm; 
import org.apache.struts.action.ActionForward; 
import org.apache.struts.action.ActionMapping; 
import org.apache.struts.action.ActionMessage; 
import org.apache.struts.action.ActionMessages; 
import org.apache.struts.action.DynaActionForm; 

import com.register.model.UserRegistration; 

public class UserRegistrationAction extends Action { 
    public ActionForward execute(ActionMapping mapping, ActionForm form, 
      HttpServletRequest request, HttpServletResponse response) 
      throws Exception { 

     boolean action_perform = false; 
     String action_target; 

     UserRegistration u = new UserRegistration(); 

     ActionMessages errors_mesg = new ActionMessages(); 

     // UserRegisterForm uf = (UserRegisterForm) form; 

     DynaActionForm uf = (DynaActionForm) form; 

     String emailid = uf.getString("emailid"); 
     String password = uf.getString("password"); 
     String cpassword = uf.getString("cpassword"); 
     String firstname = uf.getString("firstname"); 
     String lastname = uf.getString("lastname"); 
     String gender = uf.getString("gender"); 
     String submitError = uf.getString("submitError"); 

     // System.out.println(emailid); 
     if (form != null) 

     { 

      u.setEmail(emailid); 

      u.setPassword(cpassword); 
      // u.setEmail(emailid); 
      u.setFirstName(firstname); 
      u.setLastName(lastname); 
      u.setGender(gender); 
      // u.setEmail(cpassword); 
      action_perform = u.newuserregistration(); 
      String sError = u.getDbError(); 
      if (sError.equalsIgnoreCase("error")) { 
       errors_mesg.add("submitError", new ActionMessage(
         "errors.user.registration.email.duplicate")); 
       saveErrors(request, errors_mesg); 
      } 

     } 

     if (action_perform == false) { 
      errors_mesg.add("submitError", new ActionMessage(
        "errors.user.registration.fail")); 
      saveErrors(request, errors_mesg); 
      action_target = "failure"; 
     } else { 
      errors_mesg.add("submitError", new ActionMessage(
        "errors.user.registration.success")); 
      saveErrors(request, errors_mesg); 
      action_target = "success"; 
     } 

     return mapping.findForward(action_target); 

    } 
} 

我已經嘗試了這個代碼和工作正常，現在所以，現在我明白了訴訟方式和DynaAction之間的基本differnce形式。