package com.champion.itax.common.util;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
public class Snippet {
public static String postDownloadJson(String path,String post){
URL url =
null;
try {
url =
new URL(path);
HttpURLConnection
httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setRequestMethod(
"POST");
// 提交模式
// conn.setConnectTimeout(10000);//连接超时 单位毫秒
// conn.setReadTimeout(2000);//读取超时 单位毫秒
// 发送POST请求必须设置如下两行
httpURLConnection.setDoOutput(
true);
httpURLConnection.setDoInput(
true);
// 获取URLConnection对象对应的输出流
PrintWriter printWriter =
new PrintWriter(
httpURLConnection.getOutputStream());
// 发送请求参数
printWriter.write(post);
//post的参数 xx=xx&yy=yy
// flush输出流的缓冲
printWriter.flush();
//开始获取数据
BufferedInputStream bis =
new BufferedInputStream(
httpURLConnection.getInputStream());
ByteArrayOutputStream bos =
new ByteArrayOutputStream();
int len;
byte[] arr =
new byte[
1024];
while((len=bis.read(arr))!= -
1){
bos.write(arr,
0,len);
bos.flush();
}
bos.close();
return bos.toString(
"utf-8");
}
catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static String restGet(String remoteUrl)
throws Exception{
URL getUrl;
try {
getUrl =
new URL(remoteUrl);
HttpURLConnection connection = (HttpURLConnection) getUrl .openConnection();
connection.connect();
BufferedReader reader =
new BufferedReader(
new InputStreamReader(
connection.getInputStream()));
String lines;
StringBuffer sb =
new StringBuffer(
"");
while ((lines = reader.readLine()) !=
null) {
lines =
new String(lines.getBytes(),
"UTF-8");
sb.append(lines);
}
reader.close();
connection.disconnect();
return sb.toString();
}
catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
throw e;
}
}
}
以ajax为例 如果发送验证码 用重定向或转发的方式 则response无法被释放 得到的回调函数会报错
如果不用response的方式 则可能得到一个xml 页面不友好
