packagecom.xy.aider;importjava.io.BufferedReader;importjava.io.IOException;importjava.io.InputStreamReader;importjava.io.PrintWriter;importjava.net.URL;importjava.net.URLConnection;importjava.util.List;importjava.util.Map;/*** 后台发送跨域的post和get请求

*@authorHeng Hui

**/

public classSendHttpRequestUtil {/*** 向指定URL发送GET方法的请求

*

*@paramurl

* 发送请求的URL

*@paramparam

* 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。

*@returnURL 所代表远程资源的响应结果*/

public staticString sendGet(String url, String param) {

String result= "";

BufferedReader in= null;try{

String urlNameString= url + "?" +param;

URL realUrl= newURL(urlNameString);//打开和URL之间的连接

URLConnection connection =realUrl.openConnection();//设置通用的请求属性

connection.setRequestProperty("accept", "*/*");

connection.setRequestProperty("connection", "Keep-Alive");

connection.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");//备用方案//conn.setRequestProperty("UserAgent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");//建立实际的连接

connection.connect();//获取所有响应头字段

Map> map =connection.getHeaderFields();//遍历所有的响应头字段

for(String key : map.keySet()) {

System.out.println(key+ "--->" +map.get(key));

}//定义 BufferedReader输入流来读取URL的响应

in = new BufferedReader(newInputStreamReader(

connection.getInputStream()));

String line;while ((line = in.readLine()) != null) {

result+=line;

}

}catch(Exception e) {

System.out.println("发送GET请求出现异常！" +e);

e.printStackTrace();

}//使用finally块来关闭输入流

finally{try{if (in != null) {

in.close();

}

}catch(Exception e2) {

e2.printStackTrace();

}

}returnresult;

}/*** 向指定 URL 发送POST方法的请求

*@paramurl 发送请求的 URL

*@paramparam 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。

*@return所代表远程资源的响应结果*/

public staticString sendPost(String url, String param) {

PrintWriter out= null;

BufferedReader in= null;

String result= "";try{

URL realUrl= newURL(url);//打开和URL之间的连接

URLConnection conn =realUrl.openConnection();//设置通用的请求属性

conn.setRequestProperty("accept", "*/*");

conn.setRequestProperty("connection", "Keep-Alive");

conn.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");//备用方案//conn.setRequestProperty("UserAgent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");//发送POST请求必须设置如下两行

conn.setDoOutput(true);

conn.setDoInput(true);//1.获取URLConnection对象对应的输出流

out = newPrintWriter(conn.getOutputStream());//2.中文有乱码的需要将PrintWriter改为如下//out=new OutputStreamWriter(conn.getOutputStream(),"UTF-8")//发送请求参数

out.print(param);//flush输出流的缓冲

out.flush();//定义BufferedReader输入流来读取URL的响应

in = new BufferedReader(newInputStreamReader(conn.getInputStream()));

String line;while ((line = in.readLine()) != null) {

result+=line;

}

}catch(Exception e) {

System.out.println("发送 POST 请求出现异常！"+e);

e.printStackTrace();

}//使用finally块来关闭输出流、输入流

finally{try{if(out!=null){

out.close();

}if(in!=null){

in.close();

}

}catch(IOException ex){

ex.printStackTrace();

}

}

System.out.println("post推送结果："+result);returnresult;

}///数据类似这种写入

public voidtestDemo(){//发送 GET 请求

String s=SendHttpRequestUtil.sendGet("http://localhost:6144/Home/RequestString", "key=123&v=456");

System.out.println(s);//发送 POST 请求

String sr=SendHttpRequestUtil.sendPost("http://localhost:6144/Home/RequestPostString", "key=123&v=456");

System.out.println(sr);

}

}