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  • Spring Framework 4.3.4 @Tutorial Anotasi Pesanan – Urutkan Urutan untuk Komponen Kacang Beranotasi

Spring Framework 4.3.4 @Tutorial Anotasi Pesanan – Urutkan Urutan untuk Komponen Kacang Beranotasi

Diterbitkan: 2017-03-04

Kerangka kerja Web MVC – Spring adalah kerangka kerja pengontrol web dan model konfigurasi terbaik untuk aplikasi perusahaan pemrograman berbasis Java.

Kami memiliki lebih dari 40 tutorial Spring MVC di Crunchify sejauh ini. Dalam tutorial ini kita akan membahas @Order Annotation . Apa gunanya @Order di musim semi? Aspek pemesanan dengan Spring AOP & MVC .

Berikut langkah-langkah singkatnya:

  • Kami akan membuat Proyek Web Dinamis
  • Buat file Spring Config crunchify-bean.xml
  • Ubah ke Proyek Maven
  • Buat Kacang dengan Anotasi Pesanan
  • Buat test-case dan jalankan

Langkah Detil: Mari kita mulai

Langkah 1

  1. Pergi ke Eclipse
  2. Klik File
  3. Klik New
  4. Klik pada Dynamic Web Project

Buat Proyek Web Dinamis - Eclipse - Kiat Crunchify

Langkah 2

  1. Berikan nama Proyek: CrunchifySpringMVC4OrderAnnotation
  2. Berikan waktu proses Target. Terutama lokasi Apache Tomcat di Eclipse.
  3. Pilih versi Modul Web Dinamis: 3.1

Target Runtime 8.0 dan Modul Web Dinamis 3.1

Langkah-3

  1. Klik kanan pada proyek
  2. Klik Konfigurasi
  3. Konversikan proyek ke proyek Maven

Konversikan Proyek ke Maven

Langkah-4

Pilih pengaturan default dan klik Finish .

ID Grup Maven dan ID Artefak untuk Proyek Maven

Langkah-5

Berikut adalah struktur proyek sebelum kita mulai.

File Konfigurasi Spring-MVC-@Order-Annotation-Tutorial-Java-Eclipse-Project-Structure-Crunchify-Spring

Buka file pom.xml dan tambahkan ketergantungan Spring MVC 4.3.4.

Spring MVC 4.2.3 dependency
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< dependency >
< groupId > org . springframework < / groupId >
< artifactId > spring - context < / artifactId >
< version > 4.3.4.RELEASE < / version >
< / dependency >

ini file pom.xml lengkap saya

pom.xml file
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< 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 > 4.0.0 < / modelVersion >
   < groupId > CrunchifySpringMVC4OrderAnnotation < / groupId >
   < artifactId > CrunchifySpringMVC4OrderAnnotation < / artifactId >
   < version > 0.0.1 - SNAPSHOT < / version >
   < packaging > war < / packaging >
   < build >
     < sourceDirectory > src < / sourceDirectory >
     < plugins >
       < plugin >
         < artifactId > maven - compiler - plugin < / artifactId >
         < version > 3.3 < / version >
         < configuration >
           < source > 1.8 < / source >
           < target > 1.8 < / target >
         < / configuration >
       < / plugin >
       < plugin >
         < artifactId > maven - war - plugin < / artifactId >
         < version > 2.6 < / version >
         < configuration >
           < warSourceDirectory > WebContent < / warSourceDirectory >
           < failOnMissingWebXml > false < / failOnMissingWebXml >
         < / configuration >
       < / plugin >
     < / plugins >
   < / build >
   < dependencies >
   < dependency >
   < groupId > org . springframework < / groupId >
   < artifactId > spring - context < / artifactId >
   < version > 4.3.4.RELEASE < / version >
   < / dependency >
   < / dependencies >
< / project >

Langkah-6

  1. Klik kanan pada Sumber Daya Java
  2. Klik Baru
  3. Klik pada Folder Sumber dan berikan nama: resources

Buat folder sumber daya di bawah Sumber Daya Java

Langkah-7

Buat file crunchify-bean.xml file di bawah folder resource. Berikut isi file lengkapnya.

crunchify-bean.xml
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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"
xmlns : context = "http://www.springframework.org/schema/context"
xsi : schemaLocation = "http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd" >
 
< context : annotation - config / >
< ! -- Specify Bean ID "orders" -- >
< bean id = "orders" class = "com.crunchify.spring.tutorials.CrunchifyPrintResult" / >
< ! -- This is required and loads each class under below package -- >
< context : component - scan base - package = "com.crunchify.spring.tutorials" / >
< / beans >

Langkah-8

Sekarang kita akan membuat 5 file dengan anotasi @Order .

  1. Antarmuka CrunchifyCompany.java
  2. CrunchifyGoogle1.java ==> Dengan @Order(1)
  3. CrunchifyFacebook2.java ==> Dengan @Order(2)
  4. CrunchifyYahoo3.java ==> Dengan @Order(3)
  5. CrunchifyPrintResult.java

CrunchifyCompany.java

CrunchifyCompany.java
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package com . crunchify . spring . tutorials ;
 
/**
* @author Crunchify.com
*
*/
 
public interface CrunchifyCompany {
// do nothing here
}

CrunchifyGoogle1.java

CrunchifyGoogle1.java
Java
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package com . crunchify . spring . tutorials ;
 
import org . springframework . core . annotation . Order ;
import org . springframework . stereotype . Component ;
 
/**
* @author Crunchify.com
*
*/
 
@Component
@Order ( 1 ) // @Order defines the sort order for an annotated component. The value() is optional and represents an order value as
// defined in the Ordered interface. Lower values have higher priority. The default value is
// Ordered.LOWEST_PRECEDENCE, indicating lowest priority (losing to any other specified order value).
public class CrunchifyGoogle1 implements CrunchifyCompany {
 
private String order = "Crunchify Google with Order-1" ;
 
public String toString ( ) {
return "Class Name: " + this . getClass ( ) . getSimpleName ( ) + " - Result: " + this . order ;
}
}

CrunchifyFacebook2.java

CrunchifyFacebook2.java
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package com . crunchify . spring . tutorials ;
 
import org . springframework . core . annotation . Order ;
import org . springframework . stereotype . Component ;
 
@Component
@Order ( 2 )
public class CrunchifyFacebook2 implements CrunchifyCompany {
 
private String order = "Crunchify Facebook with Order-2" ;
 
public String toString ( ) {
return "Class Name: " + this . getClass ( ) . getSimpleName ( ) + " - Result: " + this . order ;
}
}

CrunchifyYahoo3.java

CrunchifyYahoo3.java
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package com . crunchify . spring . tutorials ;
 
import org . springframework . core . annotation . Order ;
import org . springframework . stereotype . Component ;
 
@Component
@Order ( 3 )
public class CrunchifyYahoo3 implements CrunchifyCompany {
 
private String order = "Crunchify Yahoo with Order-3" ;
 
public String toString ( ) {
return "Class Name: " + this . getClass ( ) . getSimpleName ( ) + " - Result: " + this . order ;
}
}

CrunchifyPrintResult.java

CrunchifyPrintResult.java
Java
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package com . crunchify . spring . tutorials ;
 
import java . util . List ;
 
import org . springframework . beans . factory . annotation . Autowired ;
import org . springframework . stereotype . Component ;
 
/**
* @author Crunchify.com
*
*/
 
@Component
public class CrunchifyPrintResult {
@Autowired
private List <CrunchifyCompany> order ;
private String result = "" ;
 
public String toString ( ) {
order . stream ( ) . forEach ( ( temp ) - > {
this . result = result + temp + "\n" ; // print result and add new line
} ) ;
return this . result ;
}
}

Langkah-9

Sekarang mari kita buat testcase CrunchifyOrderTest.java

CrunchifyOrderTest.java
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package com . crunchify . spring . tests ;
 
import org . springframework . context . ApplicationContext ;
import org . springframework . context . support . ClassPathXmlApplicationContext ;
 
import com . crunchify . spring . tutorials . CrunchifyPrintResult ;
 
/**
* @author Crunchify.com
*
*/
 
public class CrunchifyOrderTest {
 
@SuppressWarnings ( "resource" )
public static void main ( String [ ] args ) {
 
// Load Spring ApplicationContext file crunchify-beans.xml
ApplicationContext context = new ClassPathXmlApplicationContext ( "crunchify-beans.xml" ) ;
// get the bean which we specified in file crunchify-beans.xml file
CrunchifyPrintResult results = ( CrunchifyPrintResult ) context . getBean ( "orders" ) ;
// After loading each class - just print result
System . out . println ( results ) ;
}
}

Langkah-10

Sekarang klik kanan pada file CrunchifyOrderTest.java dan Run As -> Java Application . Anda akan melihat hasil tercetak dalam urutan yang kami tentukan Pesanan.

Output
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Class Name : CrunchifyGoogle1 - Result : Crunchify Google with Order - 1
Class Name : CrunchifyFacebook2 - Result : Crunchify Facebook with Order - 2
Class Name : CrunchifyYahoo3 - Result : Crunchify Yahoo with Order - 3

Spring @Order Contoh Anotasi oleh Crunchify