import org.apache.tomcat.util.http.fileupload.disk.DiskFileItem; //导入依赖的package包/类
@Override
public String getHeader(String name) {
    if (fileItem instanceof DiskFileItem) {
        return ((DiskFileItem) fileItem).getHeaders().getHeader(name);
    }
    return null;
}
 

import org.apache.tomcat.util.http.fileupload.disk.DiskFileItem; //导入依赖的package包/类
@Override
public Collection<String> getHeaderNames() {
    if (fileItem instanceof DiskFileItem) {
        HashSet<String> headerNames = new HashSet<String>();
        Iterator<String> iter =
            ((DiskFileItem) fileItem).getHeaders().getHeaderNames();
        while (iter.hasNext()) {
            headerNames.add(iter.next());
        }
        return headerNames;
    }
    return Collections.emptyList();
}
 

import org.apache.tomcat.util.http.fileupload.disk.DiskFileItem; //导入依赖的package包/类
@Override
public Collection<String> getHeaders(String name) {
    if (fileItem instanceof DiskFileItem) {
        HashSet<String> headers = new HashSet<String>();
        Iterator<String> iter =
            ((DiskFileItem) fileItem).getHeaders().getHeaders(name);
        while (iter.hasNext()) {
            headers.add(iter.next());
        }
        return headers;
    }
    return Collections.emptyList();
}
 

import org.apache.tomcat.util.http.fileupload.disk.DiskFileItem; //导入依赖的package包/类
/**
 * Determine whether the multipart content is still available.
 * If a temporary file has been moved, the content is no longer available.
 */
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();
    }
    // Check whether current file size is different than original one.
    return (this.fileItem.getSize() == this.size);
}
 

import org.apache.tomcat.util.http.fileupload.disk.DiskFileItem; //导入依赖的package包/类
/**
 * Return a description for the storage location of the multipart content.
 * Tries to be as specific as possible: mentions the file location in case
 * of a temporary file.
 */
public String getStorageDescription() {
    if (this.fileItem.isInMemory()) {
        return "in memory";
    } else if (this.fileItem instanceof DiskFileItem) {
        return "at [" + ((DiskFileItem) this.fileItem).getStoreLocation().getAbsolutePath() + "]";
    } else {
        return "on disk";
    }
}
 

import org.apache.tomcat.util.http.fileupload.disk.DiskFileItem; //导入依赖的package包/类
@Override
public String getHeader(String name) {
	if (fileItem instanceof DiskFileItem) {
		return ((DiskFileItem) fileItem).getHeaders().getHeader(name);
	}
	return null;
}
 

import org.apache.tomcat.util.http.fileupload.disk.DiskFileItem; //导入依赖的package包/类
@Override
public Collection<String> getHeaderNames() {
	if (fileItem instanceof DiskFileItem) {
		HashSet<String> headerNames = new HashSet<String>();
		Iterator<String> iter = ((DiskFileItem) fileItem).getHeaders().getHeaderNames();
		while (iter.hasNext()) {
			headerNames.add(iter.next());
		}
		return headerNames;
	}
	return Collections.emptyList();
}
 

import org.apache.tomcat.util.http.fileupload.disk.DiskFileItem; //导入依赖的package包/类
@Override
public Collection<String> getHeaders(String name) {
	if (fileItem instanceof DiskFileItem) {
		HashSet<String> headers = new HashSet<String>();
		Iterator<String> iter = ((DiskFileItem) fileItem).getHeaders().getHeaders(name);
		while (iter.hasNext()) {
			headers.add(iter.next());
		}
		return headers;
	}
	return Collections.emptyList();
}