后台发送http请求通用方法,包括get和post
2021-06-15 19:03
标签:request 返回 flush rip on() sof keep read mil 后台发送http请求通用方法,包括get和post 标签:request 返回 flush rip on() sof keep read mil 原文地址:http://www.cnblogs.com/klslb/p/7274756.htmlpackage com.examsafety.service.sh;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
import net.sf.json.JSONObject;
/**
*
* @Description: 后台发送HTTP请求的公共方法
* @Version: V1.0.0
* @Date: 2017年7月31日 下午1:51:25
*/
public class SendUrlData {
/**
* 发送远端POST请求的公共方法
* @param sendUrl (远程请求的URL)
* @param param (远程请求参数)
* @return JSONObject (远程请求返回的JSON)
*/
public static JSONObject sendPostUrl(String url, String param){
PrintWriter out = null;
BufferedReader in = null;
JSONObject jsonObject = null;
String result = "";
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setConnectTimeout(10000);
conn.setReadTimeout(10000);
conn.connect();
// 获取HttpURLConnection对象对应的输出流(设置请求编码为UTF-8)
out = new PrintWriter(
new OutputStreamWriter(conn.getOutputStream(), "UTF-8"));
// 发送请求参数
out.print(param);
// flush输出流的缓冲
out.flush();
// 获取请求返回数据(设置返回数据编码为UTF-8)
in = new BufferedReader(
new InputStreamReader(conn.getInputStream(), "UTF-8"));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
jsonObject = JSONObject.fromObject(result);
System.out.println(jsonObject);
} catch (IOException e) {
System.out.println("发送POST请求出现异常!" + e);
e.printStackTrace();
} finally{
try{
if(out!=null){
out.close();
}
if(in!=null){
in.close();
}
}
catch(IOException ex){
ex.printStackTrace();
}
}
return jsonObject;
}
/**
* 发送远端GET请求的公共方法
* @param sendUrl (远程请求的URL)
* @param param (远程请求参数)
* @return JSONObject (远程请求返回的JSON)
*/
public static JSONObject sendGetUrl(String url, String param) {
JSONObject jsonObject = null;
String result = "";
BufferedReader in = null;
try {
String urlNameString = url + "?" + param;
URL realUrl = new URL(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)");
// 建立实际的连接
connection.connect();
// 获取所有响应头字段
Map
参数说明
url:需要请求的URL地址
param:请求携带的参数(格式:“key1=value1&key2=value2&key3=value3”)
文章标题:后台发送http请求通用方法,包括get和post
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