java - HttpURLConnection 仅返回几个字节

Question

我有:

InputStream input = null;
HttpURLConnection connection = null;
URL url = new URL("...");

connection = (HttpURLConnection) url.openConnection();
String zam = "...";
connection.setRequestProperty("Cookie",zam);
connection.connect();

int fileLength = connection.getContentLength();
input = connection.getInputStream();
byte data[] = new byte[400];
int count;
count = input.read(data);
connection.disconnect();
String str1 = new String(data);

str1，响应始终只有:

!DOCTYPE HTML PUBLIC "-/

仅此而已。但是当我关闭cookie时:

connection.setRequestProperty("Cookie",zam);

一切正常；

感谢 ind adv 的回复。阿迪。

Answer 1

我猜问题是你没有从流中读取所有数据。尝试使用这样的方法。

public static String streamToString(final InputStream is, final int bufferSize) throws Exception {
    final char[] buffer = new char[bufferSize];
    final StringBuilder out = new StringBuilder();
    try (Reader in = new InputStreamReader(is, "UTF-8")) {
        int rsz = 0;
        while ((rsz = in.read(buffer, 0, buffer.length)) > 0) {
            out.append(buffer, 0, rsz);
        }
    }
    return out.toString();
}

还可以阅读有关其他方法的答案 How do I read / convert an InputStream into a String in Java?