package com.test; import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set; public class HttpRequest {
/**
* 向指定URL发送GET方法的请求
*
* @param url
* 发送请求的URL
* @param param
* 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return URL 所代表远程资源的响应结果
*/
public static String sendGet(String url, String param) {
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();
connection.setRequestProperty("Charsert", "UTF-8");
// 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<String, List<String>> 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(new InputStreamReader(
connection.getInputStream(),"utf-8"));
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();
}
}
return result;
} /**
* 向指定 URL 发送POST方法的请求
*
* @param url
* 发送请求的 URL
* @param param
* 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 static String sendPost(String url, String param) throws RuntimeException{
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
conn.setRequestProperty("Charsert", "UTF-8");
// 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)");
conn.setRequestProperty("Content-Type", "application/json");
// 发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
// 获取URLConnection对象对应的输出流
out = new PrintWriter(conn.getOutputStream());
// 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(
new InputStreamReader(conn.getInputStream(), "utf-8"));
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();
throw new RuntimeException("推送消息失败");
}
//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();
}
}
return result;
} /**
* 发送json格式请求
* @param url 请求路径
* @param param json字符串
* @return
* @throws RuntimeException
*/
public static String sendPostByJSON(String url, String param) throws RuntimeException{
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
conn.setRequestProperty("Charsert", "UTF-8");
// 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)");
conn.setRequestProperty("Content-Type", "application/json");
// 发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
// 获取URLConnection对象对应的输出流
out = new PrintWriter(conn.getOutputStream());
// 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(
new InputStreamReader(conn.getInputStream(), "utf-8"));
String line;
while ((line = in.readLine()) != null) {
result += line;
} } catch (Exception e) {
System.out.println("发送 JSON POST 请求出现异常！"+e);
e.printStackTrace();
throw new RuntimeException("推送消息失败");
}
//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();
}
}
return result;
}
public static String sendGet(String url,Map<String,Object> param){
return sendGet(url, convertMap(param));
}
public static String sendPost(String url,Map<String,Object> param){
return sendPost(url, convertMap(param));
} //测试
public static void main(String[] args) { //发送 GET请求
// 第一种方式
Map<String,Object> param = new HashMap<String,Object>();
param.put("userName", "xxx");
param.put("userPwd", "666666");
//拼接后的请求: http://127.0.0.1:8888/xx/xx?userName=xxx&userPwd=666666
String sr= HttpRequest.sendGet("http://127.0.0.1:8888/xx/xx", param);
System.out.println(sr);
//第二种方式
String sr= HttpRequest.sendGet("http://127.0.0.1:8888/xx/xx", "userName=xxx&userPwd=666666"); //POST同理 //请求新浪api根据ip查找城市
String result2 = HttpRequest.sendGet("http://int.dpool.sina.com.cn/iplookup/iplookup.php","format=json&ip=120.237.91.74");
String result = HttpRequest.sendGet("http://ip.taobao.com/service/getIpInfo.php","ip=120.237.91.74");
System.out.println("result====" +result);
System.out.println("result2====" +result2);
} private static String convertMap(Map<String,Object> param){ StringBuffer sbf = new StringBuffer(); if(param!=null){ Set<Entry<String, Object>> entrySet = param.entrySet(); for(Entry<String,Object> entry:entrySet){ String key = entry.getKey(); Object value = entry.getValue(); sbf.append(key); sbf.append("="); sbf.append(value); sbf.append("&"); } } String paramStr =""; if(sbf.length()>0) paramStr = sbf.substring(0, sbf.lastIndexOf("&")); return paramStr; } }
最后在实际使用的过程中遇到一个问题, 这两个api单独使用,经常性的请求不成功,后台提示连接超时
个人感觉淘宝的成功率比新浪的高,测试过程中,新浪没有出现过一次.......
可以考虑使用百度地图提供的接口