Spring injection properties based on XML configuration file

Method one using Setter method

 Package Com.swift;  Public class Book {    private  String bookname;      Public void Setbook (String bookname) {        this. BookName= bookname;    }    @Override    public  String toString () {        return ' book [book= ' + bookname + "]";    }}

In the spring framework, it is assumed that the object of the book class cannot be generated directly from the Servlet class, and that the property values of string bookname are injected

And the way to configure file XML

<?xml version= "1.0" encoding= "UTF-8"? ><beans xmlns= "Http://www.springframework.org/schema/beans"     xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"    xsi:schemalocation="        http://http://www.springframework.org/schema/beans/spring-beans.xsd">  Class= "Com.swift.Book" ><property name= "BookName" value= "three-body-dark forest" ></property>< /bean></beans>

Servlet Class Code:

 PackageCom.swift;Importjava.io.IOException;Importjavax.servlet.ServletException;ImportJavax.servlet.annotation.WebServlet;ImportJavax.servlet.http.HttpServlet;Importjavax.servlet.http.HttpServletRequest;ImportJavax.servlet.http.HttpServletResponse;ImportOrg.springframework.context.ApplicationContext;ImportOrg.springframework.context.support.ClassPathXmlApplicationContext; @WebServlet ("/book") Public classBookservletextendsHttpServlet {Private Static Final LongSerialversionuid = 1L;  PublicBookservlet () {Super(); }    protected voidDoget (HttpServletRequest request, httpservletresponse response)throwsservletexception, IOException {response.setcharacterencoding ("Utf-8"); Response.setcontenttype ("Text/html;charset=utf-8"); Response.getwriter (). Append ("Served at:"). Append (Request.getcontextpath ()); @SuppressWarnings ("Resource")        //that's the bottom line.ApplicationContext context=NewClasspathxmlapplicationcontext ("A.xml"); Book Book= (book) Context.getbean ("book")); String BookInfo=Book.fun ();        Response.getwriter (). println ();    Response.getwriter (). append (BookInfo); }    protected voidDoPost (HttpServletRequest request, httpservletresponse response)throwsservletexception, IOException {doget (request, response); }}

Attention

Beans, context, core, and expression kernel jar packages

As well as commons-logging and log4j two jar packages not missing

Method two using the method of constructing a parameter

Spring injection properties based on XML configuration file