使用apache的Httpclient上传文件

	String targetUrl = "http://localhost:8080/Test";
	PostMethod filePost = new PostMethod(targetUrl) {//这个用来中文乱码
			public String getRequestCharSet() {
					return "UTF-8";//
				}
	}; 
	try {
				HttpClient client = new HttpClient();
				File file = new File("c:/新闻.xml");
				Part[] parts = new Part[] {new CustomFilePart(file.getName(), file)};
				filePost.setRequestEntity(new MultipartRequestEntity(parts, filePost.getParams()));
				int statuscode=client.executeMethod(filePost);       
				if(statuscode == HttpStatus.SC_OK) {
System.out.println("添加文件成功");
} else {
System.out.println("添加文件失败");
}
} catch (Exception ex) {
ex.printStackTrace();
}

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;

import org.apache.commons.httpclient.methods.multipart.FilePart;
import org.apache.commons.httpclient.util.EncodingUtil;
/**
*解决中文文件名乱码
*/
public class CustomFilePart extends FilePart {
	public CustomFilePart(String filename, File file)
			throws FileNotFoundException {
		super(filename, file);
	}

	protected void sendDispositionHeader(OutputStream out) throws IOException {
		super.sendDispositionHeader(out);
		String filename = getSource().getFileName();
		if (filename != null) {
			out.write(EncodingUtil.getAsciiBytes(FILE_NAME));
			out.write(QUOTE_BYTES);
			out.write(EncodingUtil.getBytes(filename, "utf-8"));
			out.write(QUOTE_BYTES);
		}
	}
}

而服务端使用apache的commonfileupload：

File tempfile = new File(System.getProperty("java.io.tmpdir"));	// 采用系统临时文件目录
			DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();
			diskFileItemFactory.setSizeThreshold(4096); // 设置缓冲区大小，这里是4kb
			diskFileItemFactory.setRepository(tempfile); // 设置缓冲区目录
			ServletFileUpload fu = new ServletFileUpload(diskFileItemFactory);
			fu.setSizeMax(4194304);	// 限制文件大小最大为4M
			List fileItems = fu.parseRequest(request);
			Iterator i = fileItems.iterator();
			while (i.hasNext()) {
				FileItem fi = (FileItem) i.next();
				String fileName = fi.getName();
				if (fileName != null) {
					File fullFile = new File(fi.getName());
					File savedFile = new File(uploadPath, fullFile.getName());
					fi.write(savedFile);
				}
			}
			System.out.println("upload succeed");