夜光：@guice依賴注入（一）

 

夜光序言：

 

我會努力奮鬥 不停地想要成功 都是因爲我想成爲那個配得上你的人。

 

 

 

正文：

<?xml version="1.0" encoding="UTF-8"?>

<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>com.guicedemo</groupId>
  <artifactId>guicedemo</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>guicedemo Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>com.google.inject</groupId>
      <artifactId>guice</artifactId>
      <version>4.1.0</version>
    </dependency>
    <dependency>
      <groupId>com.google.inject.extensions</groupId>
      <artifactId>guice-multibindings</artifactId>
      <version>4.1.0</version>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
  </dependencies>


  <build>
    <finalName>guicedemo</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

第一步：修改pom.xml，添加依賴jar包

第二步：

package com.genius.test;
/*
 *
 * @title MyApplet
 * @describe 提供run方法
 * @author 
 * @version
 * @date 2019/6/18
 *
 */
public interface MyApplet  extends Runnable{



//how to write~





}

 

第三步：

package com.genius.test;
/*
*
 * @title HellowWorldPrinter
 * @describe 提供打印hi功能~~
 * @author hy
 * @version
 * @date 2019/6/18
 *
 */

public class HellowWorldPrinter implements MyApplet {

    private void printHellowWorld(){
        System.out.println("hi~~");
    }

    @Override
    public void run(){
        printHellowWorld();
    }

}

第四步：

package com.genius.test;

/*
*
 * @title Configuration
 * @describe 程序啓動配置類
 * @author hy
 * @version
 * @date 2019/6/18
 *
 */

public class Configuration {
   public static MyApplet getMainApplet(){
       return new HellowWorldPrinter();
   }

}

 

最後一步：

package com.genius.test;
/*
*
 * @title App
 * @describe  啓動類，改造HelloWorld類
 * @author hy
 * @version
 * @date 2019/6/18
 *
 */

public class App {

    /**
     * main方法的作用
     * bootstrap:
     *   parse command line：解析命令行參數
     *   set up environment：配置環境參數
     *   kick off main logic：啓動程序邏輯
     *
     */

    public static void main(String[] args) {
        MyApplet mainApplet = Configuration.getMainApplet();
        mainApplet.run();
    }



}