Byadmin
源码如下，感谢原作者
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.IOException;
public class HttpRequest {
/**
* 获取HTTP请求的响应body
* @method sendGet:静态方法，发送GET请求
* @method sendPost:静态方法，发送POST请求
*/
public static String sendGet(String url, String param) {
/**
* 向指定URL发送GET请求
* @param url:请求地址
* @param param:请求参数，这里简单点，请直接拼接成key1=value1&key2=value2···
* @return 响应的body
*/
String result = "";
BufferedReader in = null;
try {
String req = url + "?" + param;
URL urlEncode = new URL(req);
URLConnection conn = urlEncode.openConnection();
// 设置部分header并发起连接
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.connect();
/*
// 获取响应的header
Map
// 遍历响应的header
for (String key : map.keySet()) {
System.out.println(key + "--->" + map.get(key));
}
*/
// 定义 BufferedReader输入流,读取响应的body
in = new BufferedReader(new InputStreamReader(conn.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();
}
// finally块关闭输入流
finally {
try {
if (in != null) {
in.close();
}
} catch (Exception e2) {
e2.printStackTrace();
}
}
return result;
}
public static String sendPost(String url, String param) {
/**
* 向指定URL发送POST请求
* @param url:请求地址
* @param param:请求参数，请求参数是 json字符串的形式。
* @return 响应的body
*/
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL urlEncode = new URL(url);
URLConnection conn = urlEncode.openConnection();
// 设置部分header
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 以json格式发送body
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conn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,读取响应的body
in = new BufferedReader(new InputStreamReader(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();
}
// finally块关闭输出流、输入流
finally{
try{
if(out!=null){
out.close();
}
if(in!=null){
in.close();
}
}
catch(IOException ex){
ex.printStackTrace();
}
}
return result;
}
}
调用示例
import HttpRequest;
public class javaTest {
public static void main(String[] args) {
String getRespon = HttpRequest.sendGet("http://www.baidu.com", "userName=z417&passWd=123456");
String bo = "{\"usreName\":\"z417\", \"passWd\":123456}";
String postRespon = HttpRequest.sendPost("http://www.baidu.com",bo);
}
}
附上下载链接 javaTest.jar