특별한딸기이야기
예외처리(프로그램적인 방법) 본문
struts-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"
"http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">
<struts-config>
<form-beans>
<form-bean name="memberForm" type="org.apache.struts.action.DynaActionForm">
<form-property name="id" type="java.lang.String"/>
<form-property name="password" type="java.lang.String"/>
<form-property name="name" type="java.lang.String"/>
<form-property name="phone" type="java.lang.String"/>
</form-bean>
</form-beans>
<global-forwards>
<forward name="success" path="/insertResult.do" module="" redirect="true"/>
</global-forwards>
<action-mappings>
<action path="/insertForm" forward="/InsertForm.jsp"/>
<action path="/insertResult" forward="/InsertResult.jsp"/>
<action path="/insert" type="com.tistory.special0strawberry.MemberInserAction"
name="memberForm" scope="request" validate="false">
<forward name="fail" path="/insertForm.do"/>
</action>
</action-mappings>
</struts-config>
<!-- 특별히 바뀐 부분은 없다. -->
MemberInserAction class
package com.tistory.special0strawberry;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionErrors;
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.DynaActionForm;
import org.apache.struts.util.RequestUtils;
import com.tistory.special0strawberry.Member;
public class MemberInserAction extends Action
{
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
//DynaActionForm use and Exception
ActionErrors errors = new ActionErrors();
DynaActionForm member = (DynaActionForm)form;
String id = member.getString("id");
ActionForward forward = null;
try
{
if(id == null || id.length() == 0)
{
throw new MemberInsertException();
}
System.out.println("member.id : " + id);
System.out.println("member.password : " + member.getString("password"));
System.out.println("member.name : " + member.getString("name"));
System.out.println("member.phone : " + member.getString("phone"));
forward = mapping.findForward("success");
}
catch(Exception e)
{
errors.add("id", new ActionMessage("id 입력이 이상합니다.", false));
forward = mapping.findForward("fail");
}
this.saveErrors(request, errors);
return forward;
}
}
// 에러가 발생하면 catch에서 처리할 수 있다. 여기서는 id에 관한 부분만 처리하였으나 추가적인 부분도 고려할 수 있겠다.
InsertForm.jsp
<%@
page language="java" contentType="text/html; charset=EUC-KR" pageEncoding="EUC-KR"
%>
<%@
page import="org.apache.struts.action.*"
%>
<%@
page import="java.util.*"
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%!
private String getError(HttpServletRequest request, String propname)
{
String strmessage = "";
ActionMessages messages = (ActionMessages)request.getAttribute("org.apache.struts.action.ERROR");
if(messages != null)
{
Iterator propnames = messages.properties();
while(propnames.hasNext())
{
String propertyname = (String)propnames.next();
if(propertyname.equals(propname))
{
ActionMessage message = (ActionMessage)(messages.get(propertyname).next());
String key = message.getKey();
try
{
ResourceBundle rb = ResourceBundle.getBundle("MessageResource");
strmessage = rb.getString(propertyname);
}
catch(Exception e)
{
strmessage = key;
}
break;
}
}
}
return strmessage;
}
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>
Insert Form
</title>
</head>
<body>
<form action="/Tytolee/insert.do" name="insert">
Id :
<input type="text" name="id"/>
<%=getError(request, "id") %>
<br/>
Password :
<input type="password" name="password"/>
<%=getError(request, "password") %>
<br/>
Name :
<input type="text" name="name"/>
<%=getError(request, "name") %>
<br/>
Phone :
<input type="text" name="phone"/>
<%=getError(request, "phone") %>
<br/>
<input type="submit" value="확인"/>
</form>
</body>
</html>
<!-- getError 함수를 살펴보면 request에 저장된 에러 메세지를 받아와서 처리하는 함수이다. 조금 복잡한 면이 있다. 변수명에 신경써서 본다면(s가 붙고 안붙고를 잘 생각하면서 보면...) 얼추 돌아가는 장면이 보인다. 개인적으로 별로 쓰고 싶은 생각이 없는 부분... ^^;;; -->
MemberInsertException class
package com.tistory.special0strawberry;
public class MemberInsertException extends Exception
{
public MemberInsertException() {
super();
// TODO Auto-generated constructor stub
}
public MemberInsertException(String s) {
super(s);
// TODO Auto-generated constructor stub
}
}
// 특별히 하는 것 없는 클래스다. -0-;;;
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