java 下载服务器文件到本地 中文无法识别

Question

[color=red][size=large]下面是我的代码，如果url当中没有中文则可以下载，如果有则出错。InputStream in = con.getInputStream();这一句出错。
这个是编码问题，我上网找了很多资料，但是还是不会改，对编码的原理还不是很了解。哪位帮忙改改，谢谢！[/size][/color]
[code="java"]import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

public class download {

public static void DownloadFile(URL theURL, String filePath) throws IOException {
    URLConnection con = theURL.openConnection();
    String urlPath = con.getURL().getFile();
    String fileFullName = urlPath.substring(urlPath.lastIndexOf("/") + 1);
    if (fileFullName != null) {
        byte[] buffer = new byte[4 * 1024];
        int read;
        String path = filePath + "/" + fileFullName;
        File fileFolder = new File(filePath);
        if(!fileFolder.exists()){
            fileFolder.mkdir();
        }
        InputStream in = con.getInputStream();
        FileOutputStream os = new FileOutputStream(path);
        while ((read = in.read(buffer)) > 0) {
            os.write(buffer, 0, read);
        }
        os.close();
        in.close();
        long end = System.currentTimeMillis();
    } else {
    }
}

public static void main(String[] args) {
    String urlS = "http://172.18.33.133:8080/zh/中文.jpg";
    String filePathString = "d:/中文";
    URL url;
    try {
        url = new URL(urlS);
        try {
            DownloadFile(url,filePathString);
        } catch (IOException e) {
            e.printStackTrace();
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    }

}

}[/code]

Answer 1

[code="java"]
String urlS = "http://172.18.33.133:8080/zh/中文.jpg";

把文件名編碼成你服務器端一樣啊·主機不要編碼·
String host="http://172.18.33.133:8080/zh/";
String filename=java.net.Encoder.encode("中文.jpg","服務器斷編碼·");
String urlS = host＋filename；
[/code]