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我想request.getContentLength()在服务器客户端 JSP 页面中获取内容大小。但是 request.getContentLength() 总是返回-1,我不知道为什么?

安卓片段代码:

URL uri = new URL(actionUrl);
HttpURLConnection conn = (HttpURLConnection) uri.openConnection();
//conn.setChunkedStreamingMode(100);
conn.setConnectTimeout(setTimeOut>0?setTimeOut:timeoutConnection);
conn.setReadTimeout(setTimeOut>0?setTimeOut:timeoutConnection);  
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "keep-alive");

//conn.setRequestProperty("content-length", "10");
//conn.addRequestProperty("content-length", "20");
conn.setFixedLengthStreamingMode(30);

conn.setRequestProperty("Charsert", ENCODING);
conn.setRequestProperty("Content-Type", "multipart/form-data"
                + ";boundary=" + java.util.UUID.randomUUID().toString());
conn.connect();
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1 回答 1

5

您正在使用conn.setChunkedStreamingMode(100)当内容长度事先未知时,它将有效地启用 100 字节块的分块传输编码。

如果您事先知道要在请求正文中发送的内容的长度,请使用conn.setFixedLengthStreamingMode(int len) 。

于 2012-04-12T10:28:33.350 回答