spring4-Automatic assembly beans-automatically assemble beans by property by the data type of the constructor parameter

1. Create a MAVEN project, project name Springdemo17,

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2. Configure Maven, modify the Pom.xml file in the project, modify the content as follows

<project xmlns= "http://maven.apache.org/POM/4.0.0"  xmlns:xsi= "http://www.w3.org/2001/ Xmlschema-instance " xsi:schemalocation=" http://maven.apache.org/POM/4.0.0 http://maven.apache.org/ Xsd/maven-4.0.0.xsd ">  <modelVersion>1.0.0</modelVersion>  <groupId> Shequ</groupid>  <artifactid>springdemo13</artifactid>  <version> 0.0.1-snapshot</version>    <properties>  <java.version>1.7 </java.version>  <project.build.sourceencoding>utf-8</project.build.sourceencoding >  <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>   </properties>    <repositories>  <repository>   <id>codelds</id>  <url>https://code.lds.org/nexus/content/groups/main-repo </url>  </repository&gT;  </repositories>    <dependencies>  <dependency>   <groupId>junit</groupId>  <artifactId>junit</artifactId>   <version>4.10</version>  </dependency>    <dependency >  <groupid>org.springframework</groupid>  <artifactid>spring-core </artifactId>  <version>4.1.4.RELEASE</version>  </dependency>     <dependency>        <groupId> Org.springframework</groupid>        <artifactid> Spring-context</artifactid>        <version>4.1.4.release </version>    </dependency>         <dependency>        <groupid>org.springframework</groupid>         <artifactId>spring-jdbc</artifactId>         <version>4.1.4.RELEASE</version>    </dependency>         <dependency>        < Groupid>mysql</groupid>        <artifactid> mysql-connector-java</artifactid>        <version>5.1.34 </version>    </dependency>                 </dependencies>  <build/></project >

3. Create the entity Bean Forum, package name (Com.mycompany.shequ.bean) under Src/main/java

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4. Entity Bean Forum content is as follows

Package Com.mycompany.shequ.bean;public class Forum {private int fid;private String name;public int Getfid () {return FID;} public void Setfid (int fid) {this.fid = FID;} Public String GetName () {return name;} public void SetName (String name) {this.name = name;}}

5. Create the entity Bean Forumpost under Src/main/java, package name (Com.mycompany.shequ.bean)

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6. The contents of the entity Bean Forumpost are as follows

Package Com.mycompany.shequ.bean;public class Forumpost {private int pid;private String name;private Forum forum;public F Orumpost () {super ();} Public Forumpost (Forum forum) {Super (); this.forum = Forum;} public int getpid () {return PID;} public void setpid (int pid) {this.pid = pid;} Public String GetName () {return name;} public void SetName (String name) {this.name = name;} Public forum Getforum () {return Forum;}}

7. Create a bean configuration file under Src/main/resources, Profile name Spring-bean.xml,

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The contents of the 8.spring-bean.xml file are as follows

<?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://www.springframework.org/schema/beans Http://www.springframework.org/schema/beans/spring-beans.xsd "><!--automatically assemble beans by property by the data type of the constructor parameter--<bean Id= "Forumpost" class= "Com.mycompany.shequ.bean.ForumPost" autowire= "constructor" > </bean> <bean I d= "Forum" class= "Com.mycompany.shequ.bean.Forum" > <property name= "FID" value= "3" ></property> < Property name= "Name" value= "Big account" ></property> </bean></beans>

9. Under Src/test/java, create the test class Forumposttest, package name (Com.mycompany.shequ.bean),

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10. The contents of the test class forumposttest are as follows

Package Com.mycompany.shequ.bean;import Org.junit.test;import Org.springframework.context.ApplicationContext; Import Org.springframework.context.support.classpathxmlapplicationcontext;public class Forumposttest {/** * spring Automatic assembly beans, the bean is automatically assembled by attributes by the data type of the constructor parameter */@Testpublic void Constructortest () {ApplicationContext context = new CLASSPATHXM    Lapplicationcontext ("/bean/spring-bean.xml");    Forumpost forumpost = (forumpost) context.getbean ("Forumpost"); System.out.println (Forumpost.getforum (). GetName ());}}

11. Right-click on the Bytypetest method of the test class forumposttest and output the result

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spring4-Automatic assembly beans-automatically assemble beans by property by the data type of the constructor parameter