Question

我在Linux上运行Spring Batch作业（在Windows上运行正常）。这是一个简单的文件存在检查，但是当它确实存在时，我无法让系统找到路径/文件。 Spring的Resource类是否会以某种方式自动知道它何时在Linux或Windows上运行？还有别的我能做的吗

我的工作定义

    <batch:job id="vendorGoalsJob" restartable="true">
            <batch:step id="checkStartFileExists" next="readHeaderFiles">
                <batch:tasklet ref="startFileExistsTasklet" />
            </batch:step>
     more steps....
    </batch:job>

    <bean id="startFileExistsTasklet"
        class="com.blah.blah.StartFileExistsTasklet"
        scope="step">
        <property name="resource" value="/di/global/Users/my filename with blanks.txt" />
    </bean>

tasklet类：

package com.blah.blah;

import static java.lang.String.format;

import org.apache.log4j.Logger;
import org.springframework.batch.core.StepContribution;
import org.springframework.batch.core.scope.context.ChunkContext;
import org.springframework.batch.core.step.tasklet.Tasklet;
import org.springframework.batch.repeat.RepeatStatus;
import org.springframework.core.io.Resource;

public class StartFileExistsTasklet implements Tasklet {

    private static final Logger logger = Logger.getLogger(StartFileExistsTasklet.class);
    private Resource resource; 

    public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {

        if (!resource.isReadable()) {
            logger.info(format("Resource %s not found.",  resource.getFilename()));
            chunkContext.getStepContext().getStepExecution().setTerminateOnly();
        }
        return RepeatStatus.FINISHED;
    }

    public void setResource(Resource resource) {
        this.resource = resource;
    }


}

...我总是收到'未找到的消息'：

2013-09-26 15:47:09,342 handleStep Executing step: [checkStartFileExists]                                           (SimpleStepHandler.java:133) 
2013-09-26 15:47:09,352 execute Resource vendor-goal-trigger.txt not found.                                      
2013-09-26 15:47:09,361 isInterrupted Step interrupted through StepExecution

Answer 1

如果在资源URL中未指定协议，则Spring使用的默认RessourceLoader从类路径加载。

/**
 * Default implementation of the {@link ResourceLoader} interface.
 * Used by {@link ResourceEditor}, and serves as base class for
 * {@link org.springframework.context.support.AbstractApplicationContext}.
 * Can also be used standalone.
 *
 * <p>Will return a {@link UrlResource} if the location value is a URL,
 * and a {@link ClassPathResource} if it is a non-URL path or a
 * "classpath:" pseudo-URL.
 *
 * @author Juergen Hoeller
 * @since 10.03.2004
 * @see FileSystemResourceLoader
 * @see org.springframework.context.support.ClassPathXmlApplicationContext
 */
public class DefaultResourceLoader implements ResourceLoader { ... }

您可以尝试使用file:前缀：

<property name="resource" value="file:/di/global/Users/my filename with blanks.txt"/>

在Linux系统上使用Spring Batch找不到文件资源

1 个答案: