javaEE Springmvc,properties檔案解決硬編碼問題,@Value註解獲取properties檔案中的內容
阿新 • • 發佈:2018-12-11
springmvc.xml(Springmvc的核心配置檔案,讀取properties檔案):
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"> <!-- 配置@Controller掃描 --> <context:component-scan base-package="com.xxx.crm.controller" /> <!-- 讀取.properties檔案中的內容。 通過${鍵}的方式可以獲取properties中對應的值。 --> <context:property-placeholder location="classpath:resource.properties" /> <!-- 配置註解驅動; 指定處理器對映器、處理器介面卡; --> <mvc:annotation-driven /> <!-- 配置檢視解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 字首 --> <property name="prefix" value="/WEB-INF/jsp/" /> <!-- 字尾 --> <property name="suffix" value=".jsp" /> </bean> </beans>
CustomerController.java(Controller後端控制器,@Value註解獲取properties檔案中的內容):
package com.xxx.crm.controller; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import com.xxx.crm.pojo.BaseDict; import com.xxx.crm.pojo.QueryVo; import com.xxx.crm.service.BaseDictService; //客戶管理 @Controller public class CustomerController { @Autowired private BaseDictService baseDictService; //註解在成員變數上 //通過@Value註解,將springmvc.xml檔案中載入的xxx.properties中的內容賦給成員變數。 @Value("${fromType.code}") private String fromTypeCode; @RequestMapping(value = "/customer/list") public String list(QueryVo vo,Model model){ List<BaseDict> fromType = baseDictService.selectBaseDictListByCode(fromTypeCode); model.addAttribute("fromType", fromType); //.................. return "customer"; } }
resource.properties(properties檔案):
fromType.code=002