要生成对象并通过名称空间注入属性的类 代码如下：
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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;
}
}
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XML配置文件写法如下：
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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 控制反转 SpringSpring根据XML配置文件生成对象 -->
<bean id="user" class="com.swift.User" p:userName="peach"></bean>
</beans>
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p:userName="peach"
p:后是属性的变量名 后面是赋值
约束是xmlns:p="http://www.springframework.org/schema/p"
生成对象及属性值调用方法，代码如下：
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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")
//就是下边这几句了
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);
}
}
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以上这篇Spring根据XML配置文件 p名称空间注入属性的实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持服务器之家。
原文链接：http://www.cnblogs.com/qingyundian/archive/2017/11/15/7840720.html