[求解答]写SpringEL和资源调用时，出现文件无法发现的错误

[谙忆]

首先说下错误:

警告: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [cn.hncu.p2_2_2SpringEL.ElConfig]; nested exception is java.io.FileNotFoundException: class path resource [cn/hncu/p2_2_2SpringEL/test.properties] cannot be opened because it does not exist
Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [cn.hncu.p2_2_2SpringEL.ElConfig]; nested exception is java.io.FileNotFoundException: class path resource [cn/hncu/p2_2_2SpringEL/test.properties] cannot be opened because it does not exist
...
at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:84)
at cn.hncu.p2_2_2SpringEL.Main.main(Main.java:15)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Caused by: java.io.FileNotFoundException: class path resource [cn/hncu/p2_2_2SpringEL/test.properties] cannot be opened because it does not exist
at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:172)


也就是文件没有发现，所有代码在下面，为什么会这样，求大神解答！

首先，Maven的pox.xml的代码如下:

<?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.wisely</groupId>
    <artifactId>highlight_spring4</artifactId>
    <version>1.0-SNAPSHOT</version>
    <properties>
        <java.version>1.7</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.2.3.RELEASE</version>
        </dependency>

        <!-- spring aop 支持-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>4.2.3.RELEASE</version>
        </dependency>
        <!-- aspectj支持 -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.8.9</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.9</version>
        </dependency>

        <!--简化文件操作-commons-io-->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
        </dependency>

    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.2</version>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

文件位置:


代码:
text.propertise:

project.name=SpringEL
project.author=chenhaoxiang

test.txt:

chenhaoxiang

DemoService.java

package cn.hncu.p2_2_2SpringEL;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

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

ElConfig.java

package cn.hncu.p2_2_2SpringEL;

import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
import org.springframework.core.env.Environment;
import org.springframework.core.io.Resource;

import java.io.IOException;

/**
 * Created with IntelliJ IDEA.
 * User: 陈浩翔.
 * Date: 2016/11/13.
 * Time: 下午 9:11.
 * Explain:配置类
 */
@Configuration
@ComponentScan("cn.hncu.p2_2_2SpringEL")
@PropertySource("classpath:cn/hncu/p2_2_2SpringEL/test.properties")
public class ElConfig {

    @Value("I LOVE YOU!")//注入字符串
    private String normal;

    @Value("#{systemProperties['os.name']}")//获取操作系统名
    private String osName;

    @Value("#{ T(java.lang.Math).random() * 100.0 }")//注入表达式结果
    private double randomNumber;

    @Value("#{demoService.another}")//注入其他Bean的属性
    private String fromAnother;

    @Value("${project.name}")//注入配置文件
    private String projectName;

    @Value("classpath:cn/hncu/p2_2_2SpringEL/test.txt")
    private Resource testFile;//注意这个Resource是:org.springframework.core.io.Resource;

    @Autowired //注入配置文件
    private Environment environment;

    @Value("http://www.chaojijuhui.com")//注入网址资源
    private Resource testUrl;

    @Bean //注入配置文件
    public static PropertySourcesPlaceholderConfigurer propertyConfigurer(){
        return new PropertySourcesPlaceholderConfigurer();
    }

    public void outputResource(){
        try {
            System.out.println(normal);
            System.out.println(osName);
            System.out.println(randomNumber);
            System.out.println(fromAnother);
            System.out.println(projectName);
            System.out.println(IOUtils.toString(testFile.getInputStream()));
            System.out.println(environment);
            System.out.println(IOUtils.toString(testUrl.getInputStream()));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

Main.java

package cn.hncu.p2_2_2SpringEL;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

/**
 * Created with IntelliJ IDEA.
 * User: 陈浩翔.
 * Date: 2016/11/13.
 * Time: 下午 11:44.
 * Explain:运行类
 */
public class Main {

    public static void main(String[] args) {
        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(ElConfig.class);
        ElConfig resourceService = context.getBean(ElConfig.class);
        resourceService.outputResource();
        context.close();
}

}

[家里敷泥呀]

要看的不是源码，是编译后的程序。
通过资源管理器，去target目录里面找找，大概没有这个文件。
有个配置项，默认只把.class的文件放到编译目录中，改一下这个配置就行了。

Eclipse是在build path里配置

你的是idea？自己摸索一下吧。

[谙忆]

谢谢，问题解决了，确实是你说的那样，但是我没有找到IDEA的设置，在pom文件里面加了如下代码:

<resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.*</include>
                </includes>
                <excludes>
                    <exclude>**/*.java</exclude>
                </excludes>
            </resource>
        </resources>