请求正文比客户端发送的短- HttpServer Java
请求正文比客户端发送的短- HttpServer Java
提问于 2018-09-16 22:31:28
我使用HttpServer创建Java Application，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();
}
}
}
}
}在我的服务器(Centos 7)上，对于第一个请求，这是没有问题的。但是在下一个请求中，并不是所有的请求正文都可以读取。但在我的电脑(Windows10)上没有问题。问题出在哪里？
回答 2
Stack Overflow用户
回答已采纳
发布于 2018-09-16 23:57:05
对于您的InputStream，只需调用read一次-它可能不会返回所有数据。该数据甚至可能在那时没有被接收到。
相反，您应该在循环中调用read，直到获得所有字节(当您到达流的末尾时，read返回-1)。或者使用这里建议的方法之一How to read / convert an InputStream into a String in Java?
Stack Overflow用户
发布于 2018-09-17 01:43:30
谢谢。这对我来说很有效
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();
}
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/52355116
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