Question

我无法通过ftp从这个html文件中获取html文本。我使用漂亮的汤通过http / https读取html文件，但由于某种原因我不能从ftp下载/读取。请帮忙！

这是网址。 a link

到目前为止，这是我的代码。

BufferedReader reader = null;
String total = "";
String line;
ur = "ftp://ftp.legis.state.tx.us/bills/832/billtext/html/house_resolutions/HR00001_HR00099/HR00014I.htm"
try {
    URL url = new URL(ur);
    URLConnection urlc = url.openConnection();
    InputStream is = urlc.getInputStream(); // To download
    reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
        while ((line = reader.readLine()) != null)
            total += reader.readLine();

} finally {
    if (reader != null) 
        try { reader.close(); 
        } catch (IOException logOrIgnore) {}
}

Answer 1

此代码适用于我，Java 1.7.0_25。请注意，您存储了每两行中的一行，在while循环的条件和正文中调用reader.readLine()。

public static void main(String[] args) throws MalformedURLException, IOException {
    BufferedReader reader = null;
    String total = "";
    String line;
    String ur = "ftp://ftp.legis.state.tx.us/bills/832/billtext/html/house_resolutions/HR00001_HR00099/HR00014I.htm";
    try {
        URL url = new URL(ur);
        URLConnection urlc = url.openConnection();
        InputStream is = urlc.getInputStream(); // To download
        reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
        while ((line = reader.readLine()) != null) {
            total += line;
        }
    } finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (IOException logOrIgnore) {
            }
        }
    }
}

Answer 2

首先认为这与错误的路径分辨率discussed here有关，但这没有帮助。

我不知道这里到底出了什么问题，但我只能在这个ftp-server和MacOS Java 1.6.0_33-b03-424上重现这个错误。我无法使用Java 1.7.0_25重现它。所以也许你检查一下Java更新。

或者您可以使用commons FTPClient来检索文件：

FTPClient client = new FTPClient();
client.connect("ftp.legis.state.tx.us");
client.enterLocalPassiveMode();
client.login("anonymous", "");
client.changeWorkingDirectory("bills/832/billtext/html/house_resolutions/HR00001_HR00099");
InputStream is = client.retrieveFileStream("HR00014I.htm");

如何通过ftp url下载/读取html文件？

2 个答案: