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chenhaoxiangchenhaoxiang
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【Spring】Spring常用配置-Spring EL和资源调用
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‎springBoot/.idea/libraries/Maven__commons_io_commons_io_2_4.xml‎

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‎springBoot/.idea/misc.xml‎

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‎springBoot/.idea/workspace.xml‎

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‎springBoot/pom.xml‎

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<artifactId>spring-aop</artifactId>
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<version>4.2.3.RELEASE</version>
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</dependency>
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<!-- aspectj支持 -->
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<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjrt -->
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<dependency>
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<groupId>org.aspectj</groupId>
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<artifactId>aspectjrt</artifactId>
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<version>1.8.9</version>
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</dependency>
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<!--简化文件操作-commons-io-->
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<dependency>
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<groupId>commons-io</groupId>
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<artifactId>commons-io</artifactId>
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<version>2.4</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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</configuration>
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</plugin>
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</plugins>
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<resources>
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<resource>
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<directory>src/main/java</directory>
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<includes>
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<include>**/*.*</include>
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</includes>
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<excludes>
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<exclude>**/*.java</exclude>
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</excludes>
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</resource>
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</resources>
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</build>
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</project>

‎springBoot/springBoot.iml‎

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<sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
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<excludeFolder url="file://$MODULE_DIR$/target" />
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</content>
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<orderEntry type="inheritedJdk" />
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<orderEntry type="jdk" jdkName="1.7" jdkType="JavaSDK" />
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<orderEntry type="sourceFolder" forTests="false" />
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<orderEntry type="library" name="Maven: org.springframework:spring-context:4.2.3.RELEASE" level="project" />
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<orderEntry type="library" name="Maven: org.springframework:spring-beans:4.2.3.RELEASE" level="project" />
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<orderEntry type="library" name="Maven: aopalliance:aopalliance:1.0" level="project" />
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<orderEntry type="library" name="Maven: org.aspectj:aspectjrt:1.8.9" level="project" />
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<orderEntry type="library" name="Maven: org.aspectj:aspectjweaver:1.8.9" level="project" />
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<orderEntry type="library" name="Maven: commons-io:commons-io:2.4" level="project" />
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</component>
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</module>

‎springBoot/src/main/java/cn/hncu/p2_2_2SpringEL/DemoService.java‎

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package cn.hncu.p2_2_2SpringEL;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.stereotype.Service;
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/**
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* Created with IntelliJ IDEA.
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* User: 陈浩翔.
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* Date: 2016/11/13.
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* Time: 下午 9:06.
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* Explain:被注入的Bean
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*/
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@Service
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public class DemoService {
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@Value("DemoService类的属性")//注入字符串
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private String another;
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public String getAnother() {
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return another;
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}
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public void setAnother(String another) {
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this.another = another;
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}
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}

‎springBoot/src/main/java/cn/hncu/p2_2_2SpringEL/ElConfig.java‎

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package cn.hncu.p2_2_2SpringEL;
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import org.apache.commons.io.IOUtils;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.ComponentScan;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.context.annotation.PropertySource;
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import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
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import org.springframework.core.env.Environment;
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import org.springframework.core.io.Resource;
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import java.io.IOException;
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/**
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* Created with IntelliJ IDEA.
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* User: 陈浩翔.
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* Date: 2016/11/13.
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* Time: 下午 9:11.
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* Explain:配置类
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*/
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@Configuration
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@ComponentScan("cn.hncu.p2_2_2SpringEL")
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@PropertySource("classpath:cn/hncu/p2_2_2SpringEL/test.properties")
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public class ElConfig {
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@Value("I LOVE YOU!")//注入字符串
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private String normal;
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@Value("#{systemProperties['os.name']}")//获取操作系统名
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private String osName;
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@Value("#{ T(java.lang.Math).random() * 100.0 }")//注入表达式结果
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private double randomNumber;
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@Value("#{demoService.another}")//注入其他Bean的属性
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private String fromAnother;
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@Value("${project.name}")//注入配置文件
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private String projectName;
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@Value("classpath:cn/hncu/p2_2_2SpringEL/test.txt")
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private Resource testFile;//注意这个Resource是:org.springframework.core.io.Resource;
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@Autowired //注入配置文件
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private Environment environment;
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@Value("http://www.chaojijuhui.com")//注入网址资源
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private Resource testUrl;
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@Bean //注入配置文件
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public static PropertySourcesPlaceholderConfigurer propertyConfigurer(){
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return new PropertySourcesPlaceholderConfigurer();
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}
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public void outputResource(){
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try {
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System.out.println("normal:"+normal);
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System.out.println("osName:"+osName);
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System.out.println("randomNumber:"+randomNumber);
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System.out.println("fromAnother:"+fromAnother);
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System.out.println("projectName:"+projectName);
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System.out.println("测试文件:"+IOUtils.toString(testFile.getInputStream()));
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System.out.println("配置文件project.author:"+environment.getProperty("project.author"));
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System.out.println("网址资源:"+IOUtils.toString(testUrl.getInputStream()));
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}

‎springBoot/src/main/java/cn/hncu/p2_2_2SpringEL/Main.java‎

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package cn.hncu.p2_2_2SpringEL;
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import org.springframework.context.annotation.AnnotationConfigApplicationContext;
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/**
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* Created with IntelliJ IDEA.
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* User: 陈浩翔.
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* Date: 2016/11/13.
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* Time: 下午 11:44.
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* Explain:运行类
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*/
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public class Main {
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public static void main(String[] args) {
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AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(ElConfig.class);
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ElConfig resourceService = context.getBean(ElConfig.class);
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resourceService.outputResource();
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context.close();
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}
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}

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