读取帖子请求值HttpHandler [英] read post request values HttpHandler

问题描述

我正在编写一个小型Java应用程序，它实现了一个从客户端接收http post命令的http服务。

I'm writing a little Java app which implements an http service that receives http post commands from a client.

我用来实现所有的这是com.sun.net中的HttpHandler和HttpServer。 package。

The class I'm using to implement all of this is HttpHandler and HttpServer in the com.sun.net. package.

现在我正在实现一个处理请求的句柄（HttpExchange交换）函数，我正在读取请求收到的帖子值，因为只有通过HttpExchange.getResponseBody（）才能访问这些值，这只是一个输出流。

Now I'm implementing an handle(HttpExchange exchange) function which handles the request, and I'm having truble reading the post values received by the request because the only access that I have to these values is via HttpExchange.getResponseBody() which is just an output stream.

我正在寻找解析txt帖子值和上传文件。

I'm looking to parse txt post values and uploaded files.

请帮忙。

谢谢。

推荐答案

我编写了处理项目多部分请求的类 Sceye -Fi ，一个HTTP服务器，它使用java 6附带的 com.sun.net.httpserver 类来接收来自 Eye-Fi 卡。

I have written classes that process multipart requests for my project Sceye-Fi, an HTTP server that uses the com.sun.net.httpserver classes that come with java 6, to receive photo uploads from an Eye-Fi card.

这有助于文件上传（多部分帖子） ）。

This can help with file uploads (multipart posts).

对于非多部分的帖子，您需要执行以下操作：

For a non-multipart post, you would need to do something like this:

// determine encoding
Headers reqHeaders = exchange.getRequestHeaders();
String contentType = reqHeaders.getFirst("Content-Type");
String encoding = "ISO-8859-1";
if (contentType != null) {
    Map<String,String> parms = ValueParser.parse(contentType);
    if (parms.containsKey("charset")) {
        encoding = parms.get("charset");
    }
}
// read the query string from the request body
String qry;
InputStream in = exchange.getRequestBody();
try {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    byte buf[] = new byte[4096];
    for (int n = in.read(buf); n > 0; n = in.read(buf)) {
        out.write(buf, 0, n);
    }
    qry = new String(out.toByteArray(), encoding);
} finally {
    in.close();
}
// parse the query
Map<String,List<String>> parms = new HashMap<String,List<String>>();
String defs[] = qry.split("[&]");
for (String def: defs) {
    int ix = def.indexOf('=');
    String name;
    String value;
    if (ix < 0) {
        name = URLDecoder.decode(def, encoding);
        value = "";
    } else {
        name = URLDecoder.decode(def.substring(0, ix), encoding);
        value = URLDecoder.decode(def.substring(ix+1), encoding);
    }
    List<String> list = parms.get(name);
    if (list == null) {
        list = new ArrayList<String>();
        parms.put(name, list);
    }
    list.add(value);
}

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