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120 lines (105 loc) · 3.9 KB
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package NetworkProgramming;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
public class GetPostTest {
/**
* 向指定URL发送Get方式的请求
*
* @param url 发送请求的URL
* @param param 请求参数 格式满足name1=value1&name2=value2
* @return URL 远程资源的响应
*/
public static String sendGet(String url, String param) {
String result = "";
String urlName = url + "?" + param;
try {
URL realUrl = new URL(urlName);
//创建Connection对象
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)");
//建立实际的连接
conn.connect();
//获取响应头字段
Map<String, List<String>> map = conn.getHeaderFields();
//遍历输出
// for (String key:map.keySet()
// ) {
// System.out.println(key+"-->"+map.get(key));
//
// }
map.keySet().forEach((key) -> {
System.out.println(key+"-->"+map.get(key));
});
try (
//定义BufferedReader输入流来读取URL的响应
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
) {
String line;
while ((line = in.readLine()) != null) {
result += "\n" + line;
}
}
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
/**
* 向指定URL发送Post方式的请求
*
* @param url 发送请求的URL
* @param param 请求参数,格式满足name1=value1&name2=value2
* @return URL 代表远程资源的响应
*/
public static String sendPost(String url, String param) {
String result = "";
try {
URL realUrl = new URL(url);
//打开和URL的连接
URLConnection conn = realUrl.openConnection();
//设置通用属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible;MSIE 6.0;Windows NT 5.1;SV1)");
//POST设置,必不可少
conn.setDoOutput(true);//设置为Output,即对主进程而言输出到Connection
conn.setDoInput(true);
try (
//获取URLConnection对象对应的输出流
PrintWriter out = new PrintWriter(conn.getOutputStream())
) {
out.print(param);
//flush输出流缓冲
out.flush();
}
try (
//定义BufferedReader输入流读取URL的响应
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"))
) {
String line;
while ((line = in.readLine()) != null) {
result += "\n" + line;
}
}
} catch (Exception e) {
System.out.println("发送POST请求出现异常!" + e);
e.printStackTrace();
}
return result;
}
public static void main(String[] args) {
//发送GET请求
String s = GetPostTest.sendGet("http://www.acfun.cn/member/unRead.aspx", "uid=798191");
System.out.println(s);
//发送POST请求
// String s1 = GetPostTest.sendPost("")
}
}