Java如何实现URL带请求参数(get/post)及得到get和post请求url和参数列表的方法
具体代码如下所示：
publicstaticStringsendGet(Stringurl,Stringparam)
{
Stringresult="";
try{
StringurlName=url+"?"+param;//
URLU=newURL(urlName);
URLConnectionconnection=U.openConnection();
connection.connect();
BufferedReaderin=newBufferedReader(newInputStreamReader(connection.getInputStream()));
Stringline;
while((line=in.readLine())!=null)
{
result+=line;
}
in.close();
}catch(Exceptione){
System.out.println("Helloword！！"+e);
}
returnresult;
}
publicstaticStringsendPost(Stringurl,Stringparam)
{
Stringresult="";
try{
URLhttpurl=newURL(url);
HttpURLConnectionhttpConn=(HttpURLConnection)httpurl.openConnection();
httpConn.setDoOutput(true);
httpConn.setDoInput(true);
PrintWriterout=newPrintWriter(httpConn.getOutputStream());
out.print(param);
out.flush();
out.close();
BufferedReaderin=newBufferedReader(newInputStreamReader(httpConn.getInputStream()));
Stringline;
while((line=in.readLine())!=null)
{
result+=line;
}
in.close();
}catch(Exceptione){
System.out.println("Helloword！"+e);
}
returnresult;
}
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
packagecom.zuidaima
importjava.io.IOException;
importjava.io.PrintWriter;
importjava.util.Map;
importjavax.servlet.ServletException;
importjavax.servlet.http.HttpServlet;
importjavax.servlet.http.HttpServletRequest;
importjavax.servlet.http.HttpServletResponse;
publicclassGetParamsextendsHttpServlet{
privatestaticfinallongserialVersionUID=1L;
publicGetParams(){
super();
}
protectedvoiddoGet(HttpServletRequestrequest,
HttpServletResponseresponse)throwsServletException,IOException{
PrintWriterwriter=response.getWriter();
writer.println("GET"+request.getRequestURL()+""
+request.getQueryString());
Map<String,String[]>params=request.getParameterMap();
StringqueryString="";
for(Stringkey:params.keySet()){
String[]values=params.get(key);
for(inti=0;i<values.length;i++){
Stringvalue=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);
}
protectedvoiddoPost(HttpServletRequestrequest,
HttpServletResponseresponse)throwsServletException,IOException{
PrintWriterwriter=response.getWriter();
Map<String,String[]>params=request.getParameterMap();
StringqueryString="";
for(Stringkey:params.keySet()){
String[]values=params.get(key);
for(inti=0;i<values.length;i++){
Stringvalue=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);
}
}
以上代码简单易懂，希望对大家学习javapostgeturl请求参数的相关方法有所帮助，感谢大家一直以来对毛票票网站的支持，有你们的支持，我们会做的更好。