[英]Request Body Shorter than Sent by Client - HttpServer Java
我使用HttpServer創建Java應用程序,如下所示:
public class Application
{
public static void main(String args[])
{
HttpServer httpPaymentServer;
httpPaymentServer = HttpServer.create(new InetSocketAddress(Config.portPayment), 0);
httpPaymentServer.createContext("/json", new Payment("json"));
}
public class Payment implements HttpHandler
{
public Payment(String dataType)
{
}
public void handle(HttpExchange httpExchange) throws IOException
{
String body = "";
if(httpExchange.getRequestMethod().equalsIgnoreCase("POST"))
{
try
{
Headers requestHeaders = httpExchange.getRequestHeaders();
Set<Map.Entry<String, List<String>>> entries = requestHeaders.entrySet();
int contentLength = Integer.parseInt(requestHeaders.getFirst("Content-length"));
InputStream inputStream = httpExchange.getRequestBody();
byte[] postData = new byte[contentLength];
int length = inputStream.read(postData, 0, contentLength);
if(length < contentLength)
{
}
else
{
String fullBody = new String(postData);
Map<String, String> query = Utility.splitQuery(fullBody);
body = query.getOrDefault("data", "").toString();
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
}
}
在我的服務器(Centos 7)上,在第一個請求上,這沒有問題。 但是在下一個請求上,不是所有的請求正文都可以讀取。 但是在我的PC(Windows 10)上沒有問題。 問題是什么。
為了您InputStream
調用read
一次-它可能不會返回所有數據。 那時甚至可能沒有接收到該數據。
相反,您應該在循環中調用read
直到獲得所有字節(到達流read
末尾時返回-1)。 或使用此處建議的方法之一如何在Java中將InputStream讀取/轉換為String?
謝謝。 這對我有用
public void handle(HttpExchange httpExchange) throws IOException
{
String body = "";
if(httpExchange.getRequestMethod().equalsIgnoreCase("POST"))
{
try
{
Headers requestHeaders = httpExchange.getRequestHeaders();
Set<Map.Entry<String, List<String>>> entries = requestHeaders.entrySet();
int contentLength = Integer.parseInt(requestHeaders.getFirst("Content-length"));
InputStream inputStream = httpExchange.getRequestBody();
int j;
String fullBody = "";
for(j = 0; j < contentLength; j++)
{
byte b = (byte) httpExchange.getRequestBody().read();
fullBody += String.format("%c", b);
}
Map<String, String> query = Utility.splitQuery(fullBody);
body = query.getOrDefault("data", "").toString();
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
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