【软通鲲鹏云最佳实践58】spring-4.3.14鲲鹏云服务器安装实践

一、 软件介绍

Spring是一个开放源代码的设计层面框架，它解决的是业务逻辑层和其他各层的松耦合问题，因此它将面向接口的编程思想贯穿整个系统应用。

二、 支持的操作系统

经过华为云严格实测，以下操作系统在鲲鹏生态中可以完整运行Varnish的全部功能：

     CentOS7.6

三、 支持版本和获取方式

建议使用的版本：spring-4.3.14

下载地址：

通过mvn获取：

<dependencies>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-context</artifactId>

      <version>4.3.14.RELEASE</version>

    </dependency>

  </dependencies>

四、 编译与测试环境

本文选用华为鲲鹏云服务器ECS KC1实例做测试，KC1实例的处理器为兼容ARMv8指令集的鲲鹏920。详细规格如下：

五、 编译安装与测试

1安装依赖

# yum -y install wget tree

卸载自带的jdk，安装jdk-1.8_151:

# rpm -qa | grep jdk

# rpm -e --nodeps java-1.8.0-openjdkxxxxxxx

# rpm -e --nodeps java-1.8.0-openjdk-headlessxxxxxxxx

# cd /opt/ && wget https://repo.huaweicloud.com/java/jdk/8u151-b12/jdk-8u151-linux-arm64-vfp-hflt.tar.gz

# tar -zxvf jdk-8u151-linux-arm64-vfp-hflt.tar.gz

# vim /etc/profile

export JAVA_HOME=/opt/jdk1.8.0_151

export PATH=$PATH:$JAVA_HOME/bin

# source /etc/profile

2 编译安装

下载maven，并安装：

# wget http://mirrors.hust.edu.cn/apache/maven/maven-3/3.6.0/binaries/apache-maven-3.6.0-bin.tar.gz
# tar -zxvf apache-maven-3.6.0-bin.tar.gz

配置环境变量：
# vim /etc/profile

export MAVEN_HOME=/opt/apache-maven-3.6.0

export PATH=$PATH:$MAVEN_HOME/bin

:wq保存.
# mvn -version

Apache Maven 3.6.0 (97c98ec64a1fdfee7767ce5ffb20918da4f719f3; 2018-10-25T02:41:47+08:00)

Maven home: /opt/apache-maven-3.6.0

Java version: 1.8.0_212, vendor: Oracle Corporation, runtime: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.212.b04-0.el7_6.aarch64/jre

Default locale: zh_CN, platform encoding: UTF-8

OS name: "linux", version: "4.14.0-115.5.1.el7a.aarch64", arch: "aarch64", family: "unix"

创建spring java 项目：

# mvn archetype:generate -DgroupId=com.isstech -DartifactId=demo -DarchetypeArtifactId=maven-archetype-quickstart

提示：

[INFO] ----------------------------------------------------------------------------

[INFO] Using following parameters for creating project from Old (1.x) Archetype: maven-archetype-quickstart:1.0

[INFO] ----------------------------------------------------------------------------

[INFO] Parameter: basedir, Value: /opt

[INFO] Parameter: package, Value: com.isstech

[INFO] Parameter: groupId, Value: com.isstech

[INFO] Parameter: artifactId, Value: demo

[INFO] Parameter: packageName, Value: com.isstech

[INFO] Parameter: version, Value: 1.0-SNAPSHOT

[INFO] project created from Old (1.x) Archetype in dir: /opt/demo

[INFO] ------------------------------------------------------------------------

[INFO] BUILD SUCCESS

[INFO] ------------------------------------------------------------------------

[INFO] Total time:  06:07 min

[INFO] Finished at: 2019-10-16T07:48:43+08:00

[INFO] ------------------------------------------------------------------------

项目创建成功，项目目录结构如下：

# tree demo

demo

├── pom.xml

└── src

    ├── main

    │   └── java

    │       └── com

    │           └── isstech

    │               └── App.java

    └── test

        └── java

            └── com

                └── isstech

                    └── AppTest.java 

修改demo/pom.xml,加载spring：

<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/maven-v4_0_0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <groupId>com.isstech</groupId>

  <artifactId>demo</artifactId>

  <packaging>jar</packaging>

  <version>1.0-SNAPSHOT</version>

  <name>demo</name>

  <url>http://maven.apache.org</url>

  <dependencies>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-context</artifactId>

      <version>4.3.14.RELEASE</version>

    </dependency>

  </dependencies>

  <build>

    <plugins>

      <plugin>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-maven-plugin</artifactId>

        <configuration>  

          <mainClass>com.isstech.App</mainClass>  

          <layout>JAR</layout>  

        </configuration>

        <executions>

          <execution>

              <goals>

                <goal>repackage</goal>

              </goals>

           </execution>

        </executions>

      </plugin>

    </plugins>

  </build>

</project>

# vim deom/pom.xml

我不使用junit组件来测试用例，所以删掉AppTest.java

# rm -f src/test/java/com/isstech/AppTest.java

创建demo/src/main/java/com/isstech/Hello.java文件

# vim demo/src/main/java/com/isstech/Hello.java

package com.isstech;

public class Hello {

    public void sayHello() {

        System.out.println("Hello World!");

    }

}

# mkdir -p demo/src/main/resources

# vim demo/src/main/resources/application.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://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">

    <bean id = "hello" class="com.isstech.Hello"/>

</beans>

修改App.java，加载spring容器，调用Hello类中的方法sayHello();

# vim demo/src/main/java/com/isstech/App.java

package com.isstech;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

/**

 * Hello world!

 *

 */

public class App

{

    public static void main( String[] args )

    {

        //1.创建Spring的IOC容器

        ApplicationContext context = new ClassPathXmlApplicationContext("application.xml");

        //2.从IOC容器中获取到Bean的示例

        Hello hello = (Hello) context.getBean("hello");

        //3.进行方法的调用

        hello.sayHello();

    }

}

3验证测试

构建项目

# cd demo && mvn clean package

成功显示如下：

# java -jar /opt/demo/target/demo-1.0-SNAPSHOT.jar

十月 16, 2019 9:48:38 上午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh

信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@27fa135a: startup date [Wed Oct 16 09:48:38 CST 2019]; root of context hierarchy

十月 16, 2019 9:48:38 上午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions

信息: Loading XML bean definitions from class path resource [application.xml]

Hello World!

4问题总结

无

六、 声明