要生成对象并通过名称空间注入属性的类 代码如下：
|
1
2
3
4
5
6
7
8
9
10
11
12
|
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配置文件写法如下：
|
1
2
3
4
5
6
7
8
9
|
<?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> |
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：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
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); }} |
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
