具体代码如下所示:
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public static String sendGet(String url,String param)
{
String result = "" ;
try {
String urlName = url + "?" +param; //
URL U = new URL(urlName);
URLConnection connection = U.openConnection();
connection.connect();
BufferedReader in = new BufferedReader( new InputStreamReader(connection.getInputStream()));
String line;
while ((line = in.readLine())!= null )
{
result += line;
}
in.close();
} catch (Exception e){
System.out.println( "Helloword!!" +e);
}
return result;
}
public static String sendPost(String url,String param)
{
String result= "" ;
try {
URL httpurl = new URL(url);
HttpURLConnection httpConn = (HttpURLConnection)httpurl.openConnection();
httpConn.setDoOutput( true );
httpConn.setDoInput( true );
PrintWriter out = new PrintWriter(httpConn.getOutputStream());
out.print(param);
out.flush();
out.close();
BufferedReader in = new BufferedReader( new InputStreamReader(httpConn.getInputStream()));
String line;
while ((line = in.readLine())!= null )
{
result += line;
}
in.close();
} catch (Exception e){
System.out.println( "Helloword!" +e);
}
return result;
}
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下面给大家介绍 java得到GET和POST请求URL和参数列表的方法
在servlet中GET请求可以通过HttpServletRequest的getRequestURL方法和getQueryString()得到完整的请求路径和请求所有参数列表,POST的需要getParameterMap()方法遍历得到,不论GET或POST都可以通过getRequestURL+getParameterMap()来得到请求完整路径
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package com.zuidaima
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class GetParams extends HttpServlet {
private static final long serialVersionUID = 1L;
public GetParams() {
super ();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
PrintWriter writer = response.getWriter();
writer.println( "GET " + request.getRequestURL() + " "
+ request.getQueryString());
Map<String, String[]> params = request.getParameterMap();
String queryString = "" ;
for (String key : params.keySet()) {
String[] values = params.get(key);
for ( int i = 0 ; i < values.length; i++) {
String value = values[i];
queryString += key + "=" + value + "&" ;
}
}
// 去掉最后一个空格
queryString = queryString.substring( 0 , queryString.length() - 1 );
writer.println( "GET " + request.getRequestURL() + " " + queryString);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
PrintWriter writer = response.getWriter();
Map<String, String[]> params = request.getParameterMap();
String queryString = "" ;
for (String key : params.keySet()) {
String[] values = params.get(key);
for ( int i = 0 ; i < values.length; i++) {
String value = values[i];
queryString += key + "=" + value + "&" ;
}
}
// 去掉最后一个空格
queryString = queryString.substring( 0 , queryString.length() - 1 );
writer.println( "POST " + request.getRequestURL() + " " + queryString);
}
}
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以上代码简单易懂,希望对大家学习 java post get url 请求参数的相关方法有所帮助,感谢大家一直以来对服务器之家网站的支持,有你们的支持,我们会做的更好。