文件上传 ,java.lang.IllegalStateException: File has been moved - cannot be read again org.springframewor

最新推荐文章于 2025-04-12 13:59:42 发布

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最新推荐文章于 2025-04-12 13:59:42 发布

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分类专栏： java类文件上传

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文件上传

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本文探讨了使用新线程进行文件上传时遇到的java.lang.IllegalStateException异常：Filehasbeenmoved-cannotbereadagain的问题。通过分析源码，发现该问题与文件的有效性检查有关，并提出了设置最大上传文件大小等解决方案。

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启动新线程进行文件上传报:,java.lang.IllegalStateException: File has been moved - cannot be read again org.springframewor错误

查看多媒体文件上传处理类支持的上传大小设置合理

<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="${web.maxUploadSize}" />
</bean>

查看源码:

@Override

public void transferTo(File dest) throws IOException, IllegalStateException {
if (!isAvailable()) {
throw new IllegalStateException("File has already been moved - cannot be transferred again");
}

....
}

文件是否合法,

protected boolean isAvailable() {
// If in memory, it's available.
if (this.fileItem.isInMemory()) {
return true;
}
// Check actual existence of temporary file.
if (this.fileItem instanceof DiskFileItem) {
return ((DiskFileItem) this.fileItem).getStoreLocation().exists(); 在此返回false
}
// Check whether current file size is different than original one.
return (this.fileItem.getSize() == this.size);
}