要生成對象并通過名稱空間注入屬性的類 代碼如下：
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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：
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<?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"
生成對象及屬性值調(diào)用方法，代碼如下：
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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); }} |
以上這篇Spring根據(jù)XML配置文件 p名稱空間注入屬性的實例就是小編分享給大家的全部內(nèi)容了，希望能給大家一個參考，也希望大家多多支持服務(wù)器之家。
原文鏈接：http://www.cnblogs.com/qingyundian/archive/2017/11/15/7840720.html
