首先 service層的增、刪、改操作前要加註解@Transactonal,如下  

@Transactional
	public void saveErpProductType(ErpProductType erpProductType) {
		erpProductTypeDao.saveOrUpdate(erpProductType);
	}

private static final Logger log = Logger.getLogger(ProductTypeAction.class);//括號裡ProductTypeAction.class是當前Controller類

@RequiresPermissions(value = { "1465801690631" })
	@RequestMapping(value = "/saveProductType")
	public ModelAndView validateTypeName(HttpServletRequest request, HttpServletResponse response) throws Exception {
		// 型別
		ErpProductType erpProductType = new ErpProductType();
		String typeName = request.getParameter("typeName").trim();
		erpProductType.setTypeCode(erpProductTypeService.getMaxProductTypeFromMemory());
		erpProductType.setTypeName(typeName);
		ErpUser loginUser = (ErpUser) request.getSession().getAttribute(Constant.USER);
		String marketNo = loginUser.getMarketNo();
		try {
			erpProductTypeService.saveErpProductType(erpProductType); // 存入資料庫
			LoadOnStartService.erpProductTypeTable.put(erpProductType.getId(), erpProductType); // 更新記憶體
			LoadOnStartService.refreshMarketDataTable(marketNo, Constant.ONE);
			JSONObject jsonObject = new JSONObject();
			jsonObject.put("msg", "儲存成功");
			response.getWriter().write(jsonObject.toString());
			return null;
		} catch (Exception e) {
			log.info(e.getMessage());
			JSONObject jsonObject = new JSONObject();
			jsonObject.put("msg", "儲存失敗");
			response.getWriter().write(jsonObject.toString());
			return null;
		}
	}
 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>
	<!-- 根logger的設定 OFF,ERROR,WARN,INFO,DEBUG -->
	<root>
		<priority value="INFO" />
		<appender-ref ref="CONSOLE" />
		<appender-ref ref="myFile" />
	</root>


	<appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
		<layout class="org.apache.log4j.PatternLayout">
			<param name="ConversionPattern"
				value="%d - %c -%-4r [%t] %-5p %x - %m%n" />
		</layout>

		<!--限制輸出級別-->
		<filter class="org.apache.log4j.varia.LevelRangeFilter">
			<param name="LevelMax" value="ERROR" />
			<param name="LevelMin" value="TRACE" />
		</filter>
	</appender>

	<appender name="myFile"
		class="org.apache.log4j.DailyRollingFileAppender">
		<filter class="org.apache.log4j.varia.LevelRangeFilter">
			<param name="levelMin" value="info" />
			<param name="levelMax" value="error" />
			<param name="AcceptOnMatch" value="true" />
		</filter>
		<param name="File" value="${erp.root}/logs/today.log" /><!-- 設定日誌輸出檔名 -->
		<param name="Append" value="true" />
		<param name="DatePattern" value="'.'yyyy-MM-dd" />
		<param name="MaxBackupIndex" value="10" />
		<layout class="org.apache.log4j.PatternLayout">
			<param name="ConversionPattern"
				value="[%d{yyyy-MM-dd HH:mm:ss}] [%p] [%c] %m%n" />
		</layout>
	</appender>


</log4j:configuration>