'JAVA' 카테고리의 글 목록

프로그램 예외처리의 의미

예외 처리

정상적인 흐름.

- ex) 커피빈 에서 따뜻한 아메리카노를 주문할때입니다.
  1. 따뜻한 아메리카노 를 주문한다.
  2. 결제를 한다.
  3. 커피머신에서 커피를 내린다.
  4. 내린 커피를 컵에 담는다.
  5. 커피가 담긴 컵을 준다.

이렇게 정상적인 흐름입니다.

위의 흐름에서
  3. 커피머신에 들어갈 콩이 없어서 예외(exception) 가 발생하였습니다.

이런 상황에서는 어떻게 해야 할지 판단을 해야 합니다.
1. 손님에게 커피콩이 없어서 환불해준다.
   -> 환불처리로직
2. 다른 음료로 대체할지 물어본다.
   -> 다른 음료로 대체하는 로직
3. 1시간 뒤에 커피 콩이 입고 되는데 그때까지 기다릴건지 물어본다.
   -> 기다릴건지 물어보는 로직

posted by 나는너의힘

:

spring @Scheduled 중복 수행

cafe24 jsp 호스팅 받고 있다.

spring @Scheduled 중복 수행...

많이 찾아봤다...

톰캣 스타트 하면....

[ INFO] [2013-09-25 00:06:49,249][main] AbstractApplicationContext.java.prepareRefresh()-[495 Line] Refreshing WebApplicationContext for namespace 'appServlet-servlet': startup date [Wed Sep 25 00:06:49 KST 2013]; parent: Root WebApplicationContext

...

[ INFO] [2013-09-25 00:06:56,148][main] AbstractApplicationContext.java.prepareRefresh()-[495 Line] Refreshing WebApplicationContext for namespace 'appServlet-servlet': startup date [Wed Sep 25 00:06:56 KST 2013]; parent: Root WebApplicationContext

이렇게 두번 올라간다.(안올라가면 좋은건지 나쁜건지...모르겟다.

문제는 @Scheduled 이 두번 실행된다.

아주 약간의 시간차를 두고....

인터넷 찾아봐도 없다.

그래서....

우회?적인 방법으로 처리함.

DB 처리 방식.

CREATE TABLE `TBCRON01` (

`CLASSIFICATION` varchar(50) NOT NULL COMMENT '크론작업구분',

`JOBDATE` varchar(20) NOT NULL COMMENT '작업등록시간',

PRIMARY KEY (`CLASSIFICATION`,`JOBDATE`)

) ENGINE=MyISAM DEFAULT CHARSET=utf8;

INSERT TBCRON01

VALUES(#{classification}, #{jobdate})

</insert>

@Resource(name="sqlSession")

private SqlSession session;

HashMap<String, String> mp = new HashMap<String, String>();

mp.put("classification", "DatabaseBackupExecutor");

mp.put("jobdate", CommonUtil.getDateFormat("yyyy_MM_dd_HH_mm"));

session.update("SqlCronMapper.cronInsert", mp);

꼼수긴 해도...어쩔 도리가 없다....

posted by 나는너의힘

:

java zip 분할 압축

하나의 파일로 압축하는건 많은데

파일들을 분할 압축하는거는 없다.

zip4j 오랫동안 찾다가 이제 찾음

http://www.lingala.net/zip4j/

소스 정말 심플함.

/*

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing,

* software distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

package net.lingala.zip4j.examples.zip;

import java.io.File;

import java.util.ArrayList;

import net.lingala.zip4j.core.ZipFile;

import net.lingala.zip4j.exception.ZipException;

import net.lingala.zip4j.model.ZipParameters;

import net.lingala.zip4j.util.Zip4jConstants;

/**

* Demonstrated how to create a split zip file

*

* @author Srikanth Reddy Lingala

*

*/

public class CreateSplitZipFile {

public CreateSplitZipFile() {

try {

// Initiate ZipFile object with the path/name of the zip file.

ZipFile zipFile = new ZipFile("c:\\ZipTest\\CreateSplitZipFile.zip");

// Build the list of files to be added in the array list

// Objects of type File have to be added to the ArrayList

ArrayList filesToAdd = new ArrayList();//압출할 파일 대상들.

filesToAdd.add(new File("c:\\ZipTest\\sample.txt"));

filesToAdd.add(new File("c:\\ZipTest\\myvideo.avi"));

filesToAdd.add(new File("c:\\ZipTest\\mysong.mp3"));

// Initiate Zip Parameters which define various properties such

// as compression method, etc.

ZipParameters parameters = new ZipParameters();

// set compression method to store compression

parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);

// Set the compression level. This value has to be in between 0 to 9

parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);

// Create a split file by setting splitArchive parameter to true

// and specifying the splitLength. SplitLenth has to be greater than

// 65536 bytes

// Please note: If the zip file already exists, then this method throws an

// exception

zipFile.createZipFile(filesToAdd, parameters, true, 10485760);//파일 사이즈 byte단위

} catch (ZipException e) {

e.printStackTrace();

}

/**

* @param args

*/

public static void main(String[] args) {

new CreateSplitZipFile();

}

posted by 나는너의힘

:

Spring 3.1 TestCase (MockServletContext 사용)

svn 다운로드 주소 : https://faz.googlecode.com/svn/trunk/springtestcase3.1

좀 틀린부분도 있습니다. 너그러이 용서를....

package kr.faz.testcase;

import javax.inject.Inject;

import kr.faz.util.StringUtils;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.mock.web.MockHttpServletRequest;

import org.springframework.mock.web.MockHttpServletResponse;

import org.springframework.mock.web.MockServletContext;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import org.springframework.transaction.annotation.Transactional;

import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter;

import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;

@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration(locations = "classpath:kr/faz/test-servlet-context.xml" )

@Transactional

public class MockControllerTest {

@Inject

private RequestMappingHandlerAdapter handlerAdapter;

@Inject

private RequestMappingHandlerMapping handlerMapping;

MockHttpServletRequest request ;

MockHttpServletResponse response;

@Before

public void setUp() {

request = new MockHttpServletRequest();

response = new MockHttpServletResponse();

}

@Test //주문서로 이관

public void urlTest() throws Exception {

setRequest("/test.do?companycode=2&infolidx=2&filelidx=2&orderdate=20130413", "POST");

}

public void setRequest(String uri, String method) throws Exception {

int questionIndex = uri.indexOf("?");

String url = null;

String param = null;

if ( questionIndex != -1 ){

url = uri.substring(0, questionIndex);

param = uri.substring(questionIndex+1);

} else {

url = uri;

}

request.setRequestURI(url);

if ( StringUtils.isNotEmpty(param)) {

String params[] = param.split("&");

for ( String value : params) {

//파라미터 값이 있으면 셋팅

String[] v = value.split("=");

if ( v.length == 2) {

request.addParameter(v[0], v[1]);

}

System.out.println("URI : "+ request.getRequestURI());

System.out.println("URL : "+ request.getRequestURL());

System.out.println("QueryString : "+ request.getQueryString());

request.setMethod(method);

Object handler = handlerMapping.getHandler(request).getHandler();

handlerAdapter.handle(request, response, handler);

System.out.println("response data : "+ response.getContentAsString());

request.close();

}

posted by 나는너의힘

:

org.apache.poi.EncryptedDocumentException: Default password is invalid for docId/saltData/saltHash

at org.apache.poi.hssf.record.RecordFactoryInputStream$StreamEncryptionInfo.createDecryptingStream(RecordFactoryInputStream.java:116)

at org.apache.poi.hssf.record.RecordFactoryInputStream.<init>(RecordFactoryInputStream.java:184)

at org.apache.poi.hssf.record.RecordFactory.createRecords(RecordFactory.java:440)

at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:280)

at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:243)

at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:187)

at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:169)

at kr.faz.excelupload.controller.ExceluploadController.parsingTypeByExclude(ExceluploadController.java:496)

at kr.faz.excelupload.controller.ExceluploadController.adminExceluploadInsertFormAction(ExceluploadController.java:115)

at kr.faz.excelupload.controller.ExceluploadController$$FastClassByCGLIB$$7002440e.invoke(<generated>)

at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)

at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)

at kr.faz.aop.SessionCheck.adminSessionCheck(SessionCheck.java:57)

at sun.reflect.GeneratedMethodAccessor102.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)

at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)

at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)

at kr.faz.excelupload.controller.ExceluploadController$$EnhancerByCGLIB$$ee8dc86a.adminExceluploadInsertFormAction(<generated>)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)

at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)

at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)

at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)

at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)

at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)

at org.apache.jk.common.Socket.invoke(Socket.java:776)

at org.apache.jk.common.Socket.processConnection(Socket.java:705)

at org.apache.jk.common.Socket$SocketConnection.runIt(Socket.java:898)

at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)

at java.lang.Thread.run(Thread.java:619)

posted by 나는너의힘

:

Error querying database. Cause: java.lang.NumberFormatException

Mybatis 에서 나는 오류

->

<if test='section != null && section != "" && section != "X" ' >

변경하면 된다.

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:

### Error querying database. Cause: java.lang.NumberFormatException: For input string: "X"

### Cause: java.lang.NumberFormatException: For input string: "X"

at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)

at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:364)

at $Proxy12.selectList(Unknown Source)

at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:194)

at kr.faz.goodsinout.dao.impl.GoodsinoutDaoImpl.list(GoodsinoutDaoImpl.java:26)

at kr.faz.goodsinout.service.impl.GoodsinoutServiceImpl.list(GoodsinoutServiceImpl.java:26)

at kr.faz.goodsinout.controller.GoodsinoutController.adminGoodsinoutList(GoodsinoutController.java:70)

at kr.faz.goodsinout.controller.GoodsinoutController$$FastClassByCGLIB$$b9c3d7bc.invoke(<generated>)

at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)

at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)

at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)

at kr.faz.aop.SessionCheck.adminSessionCheck(SessionCheck.java:58)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)

at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)

at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)

at kr.faz.goodsinout.controller.GoodsinoutController$$EnhancerByCGLIB$$a5f0006b.adminGoodsinoutList(<generated>)