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小編給大家分享一下Spring根據(jù)XML配置文件和p名稱空間注入屬性的示例分析,相信大部分人都還不怎么了解,因此分享這篇文章給大家參考一下,希望大家閱讀完這篇文章后大有收獲,下面讓我們一起去了解一下吧!
要生成對(duì)象并通過(guò)名稱空間注入屬性的類 代碼如下:
package com.swift; public class User { private String userName; public void setUserName(String userName) { this.userName = userName; } public String fun() { return "User's fun is ready."+this.userName; } }
XML配置文件寫法如下:
<?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" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <!-- IoC 控制反轉(zhuǎn) SpringSpring根據(jù)XML配置文件生成對(duì)象 --> <bean id="user" class="com.swift.User" p:userName="peach"></bean> </beans>
p:userName="peach"
p:后是屬性的變量名 后面是賦值
約束是xmlns:p="http://www.springframework.org/schema/p"
生成對(duì)象及屬性值調(diào)用方法,代碼如下:
package com.swift; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; @WebServlet("/test") public class TestIOC extends HttpServlet { private static final long serialVersionUID = 1L; public TestIOC() { super(); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.getWriter().append("Served at: ").append(request.getContextPath()); @SuppressWarnings("resource") //就是下邊這幾句了 ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml"); User user=(User) context.getBean("user"); String userInfo=user.fun(); response.getWriter().println(); response.getWriter().append(userInfo); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }
以上是“Spring根據(jù)XML配置文件和p名稱空間注入屬性的示例分析”這篇文章的所有內(nèi)容,感謝各位的閱讀!相信大家都有了一定的了解,希望分享的內(nèi)容對(duì)大家有所幫助,如果還想學(xué)習(xí)更多知識(shí),歡迎關(guān)注億速云行業(yè)資訊頻道!
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