要生成对象并通过名称空间注入属性的类 代码如下：
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配置文件写法如下：
<?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：
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。
