如何使用VERTX处理程序获取POST表单数据？ [英] How to get POST form data using VERTX handlers?
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问题描述
我能够使用缓冲区处理程序获取表单数据，但它是一个void函数，我无法返回表单数据值。总共有大约4-7个表单，我不想一遍又一遍地编写相同的处理程序，因为默认函数是无效的。
I am able to get the form data using the buffer handler, but it is a void function and I cannot return the form data values. Have about 4-7 forms total, I don't want to end up writing the same handler over and over because the default function is void.
html：
<!DOCTYPE html>
<html>
<head><title>Login Page</title></head>
<body>
<a href="/activateUserPage">activate user</a>
<br/>
<a href="/login">log in</a>
<br/>
<form id='login' action='/login' method='post'>
<fieldset >
<legend>Login</legend>
<input type='hidden' name='submitted' id='submitted' value='1'/>
<label for='username' >UserName: </label>
<input type='text' name='username' id='username' maxlength="50"/>
<label for='password' >Password: </label>
<input type='password' name='password' id='password' maxlength="50"/>
<input type='submit' name='Submit' value='Submit' />
</fieldset>
</form>
</body>
</html>
java：
import org.jboss.netty.handler.codec.http.QueryStringDecoder;
import org.vertx.java.core.Handler;
import org.vertx.java.core.Vertx;
import org.vertx.java.core.buffer.Buffer;
import org.vertx.java.core.http.HttpServer;
import org.vertx.java.core.http.HttpServerRequest;
import org.vertx.java.core.http.RouteMatcher;
import org.vertx.java.deploy.Verticle;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* Created by IntelliJ IDEA.
* User: yao
* Date: 1/17/13
* Time: 2:22 PM
*/
public class Main extends Verticle
{
@Override
public void start() throws Exception
{
System.out.println("starting the vertx stuff");
final String host = "localhost";
final String port = "8181";
Vertx vertx = Vertx.newVertx();
HttpServer httpServer = vertx.createHttpServer();
...
httpServer.requestHandler(new Handler<HttpServerRequest>()
{
public void handle(HttpServerRequest req)
{
String path = req.path;
/* start mapping of page urls*/
// redirect user to the login page
if (path.equals("/"))
{
req.response.sendFile(dir + "html/loginPage.html");
}
...
/* end mapping of page urls*/
/* start mapping of form urls */
// login
else if (path.equals(login))
{
mainLogin();
getFormData(req);
}
...
/* end mapping of form urls */
/* all other pages */
else
{
req.response.end("404 - page no exist");
}
}
});
System.out.println("vertx listening to: " + host + " " + port);
httpServer.listen(Integer.valueOf(port), host);
}
...
private void getFormData(final HttpServerRequest req)
{
req.bodyHandler(new Handler<Buffer>()
{
@Override
public void handle(Buffer buff)
{
String contentType = req.headers().get("Content-Type");
if ("application/x-www-form-urlencoded".equals(contentType))
{
QueryStringDecoder qsd = new QueryStringDecoder(buff.toString(), false);
Map<String, List<String>> params = qsd.getParameters();
System.out.println(params);
}
}
});
}
}
推荐答案
什么我最终做的基本上是这样的：
what i did in the end is basically this:
使用post进行ajax调用，表单中的数据需要序列化。
do the ajax call using post, the data from the form needs to be serialized.
$.ajax
({
type: "POST",
url: "/login",
data: $('#frm_login').serialize(),
success: function(data)
...
在后端，vertx将此数据作为缓冲区接收。其余部分通过拆分&和=来解析缓冲区。
in the backend, vertx receives this data as a buffer. rest is to parse the buffer by splitting by "&" and "=".
Map<String, String> params = new HashMap<String, String>();
String[] paramSplits = buffer.toString().split("&");
String[] valueSplits;
if (paramSplits.length > 1)
{
for (String param : paramSplits)
{
valueSplits = param.split("=");
if (valueSplits.length > 1)
{
// add this check to handle empty phone number fields
params.put(decode(valueSplits[0]), decode(valueSplits[1]));
}
}
}
希望这会有助于其他人！
hope this will help others!
这篇关于如何使用VERTX处理程序获取POST表单数据？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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