查询网站 [英] query to website

问题描述

我正在编写一个连接到服务器的客户端应用程序，然后将数据发送到服务器。

但是，问题是我得到了一个java.net.ConnectException：连接被拒绝错误。 />
我写的代码是：

i am writing an client application that connects to the server and then sends data to server.
but, the problem is that i get a java.net.ConnectException: Connection refused error.
The code i have written is :

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推荐答案

为什么不要''你为此目的使用 URL 和 URLConnection 吗？


亲切的问候，


Jos

Why don''t you use a URL and a URLConnection for this purpose?

kind regards,

Jos

嗯好，

但是我用url写了这段代码，但即便如此工作？

hmm ok,
but i wrote this code using url,but even this doesnot work ?

import java.io.BufferedReader;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.URL;


公共类Sample1 {


public static void main（String [] args）{


try {

// String url =

//" https ：//services.natureserve.org/" +

//" idd / rest / ns / v1.1 / globalSpecies / comprehensive" ;;

String url =" http：//www.bioinf.seu .edu.cn / miRNA / index.html" ;;

String uid =" ELEMENT_GLOBAL.2.100925";

String nsAccessKeyId =" 72ddf45a-c751-44c7- 9bca-8db3b4513347" ;;

String Query =" seqences = />示例\\\
CUUGGGAAUGGCAAGGAAACCGUUACCAUUACUGAGUUUAGUAAUGGU AAUGGUUCUCUUGCUAUACCCAGA" ;;


String request = url ;

request = request +"？" ;;

// request = request +" uid =" + uid;

// request = request +"&" ;;

// request = request +" NSAccessKeyId =" + nsAccessKeyId;

request = request + Query;


URL serviceURL =新URL（请求）;

InputStream is = serviceURL .openStream（）;

// InputStreamReader isr = new InputStreamReader（is，" UTF-8"）;

InputStreamReader isr = new InputStreamReader（is）;

BufferedReader br = new BufferedReader（isr）;


StringBuffer response = new StringBuffer（）;

String nextLineFromService = br.readLine（ ）;

while（nextLineFromService！= null）{

response.append（nextLineFromService）;

nextLineFromService = br.readLine（）; < br $>
}


System.out.println（响应）;

}

catch（例外e ）{

System.out.println（e）;

}


}

}

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;

public class Sample1 {

public static void main(String[] args) {

try {
//String url =
// "https://services.natureserve.org/" +
// "idd/rest/ns/v1.1/globalSpecies/comprehensive";
String url = "http://www.bioinf.seu.edu.cn/miRNA/index.html";
String uid = "ELEMENT_GLOBAL.2.100925";
String nsAccessKeyId = "72ddf45a-c751-44c7-9bca-8db3b4513347";
String Query = "seqences=/>Example \nCUUGGGAAUGGCAAGGAAACCGUUACCAUUACUGAGUUUAGUAAUGGU AAUGGUUCUCUUGCUAUACCCAGA";


String request = url;
request = request + "?";
//request = request + "uid=" + uid;
//request = request + "&";
//request = request + "NSAccessKeyId=" + nsAccessKeyId;
request = request + Query;

URL serviceURL = new URL(request);
InputStream is = serviceURL.openStream();
//InputStreamReader isr = new InputStreamReader(is,"UTF-8");
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);

StringBuffer response = new StringBuffer();
String nextLineFromService = br.readLine();
while (nextLineFromService != null) {
response.append(nextLineFromService);
nextLineFromService = br.readLine();
}

System.out.println(response);
}
catch (Exception e) {
System.out.println(e);
}

}
}

我可以''联系该网站（使用我的浏览器）。您确定网址是否正确？


亲切的问候，


Jos

I can''t contact that site either (using my browser). Are you sure the url address is correct?

kind regards,

Jos

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