本身自己是学Java的但是平时自己在家里不知道写点什么，用Java去窗口扯淡了，自己去写个网页没创意而且网页麻烦美化什么的等等问题，所以平时一直在用C#写窗口用Java的时间越来越少，学的知识全丢给老师还了！自从看到飞哥的HttpHelper类之后就有点心动按照飞哥的思路写一个Java的HttpHelper类所以现在写了一个简约的，给大家玩玩！接下去我会好好按照飞哥的思路写的更加完善！
代码如下：
package com.ebbbe.http;
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.List;
import java.util.Map;
/**
* HttpHelper
* @author Lese
*
* @version 1.0。0。0
*
*/
public class HttpHelper {
/**
* 向指定URL发送GET方法的请求
*
* @param item
* 发送请求的 参数
* @return URL 所代表远程资源的响应结果
*/
public static String sendGet(HttpItem item) {
String result = "";
BufferedReader in = null;
try {
String urlNameString ="";
if(item.getURL().contains("http://")){
urlNameString = item.getURL();
}else{
urlNameString = "http://"+item.getURL();
}
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", item.getAccept());
connection.setRequestProperty("connection", item.getConnection());
connection.setRequestProperty("user-agent",item.getUserAgent());
connection.setRequestProperty("Referer",item.getReferer());
connection.setRequestProperty("Cookie",item.getCookie());
connection.setRequestProperty("Host",item.getHost());
connection.setRequestProperty("Content-Type", item.getContentType());
// 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("\n\n"+key + "--->" + map.get(key));
}
// 定义 BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(
connection.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();
}
// 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 item
* 发送请求的 参数
* @return 所代表远程资源的响应结果
*/
public static String sendPost(HttpItem item) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
String urlNameString ="";
if(item.getURL().contains("http://")){
urlNameString = item.getURL();
}else{
urlNameString = "http://"+item.getURL();
}
URL realUrl = new URL(urlNameString);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestProperty("accept", item.getAccept());
conn.setRequestProperty("connection", item.getConnection());
conn.setRequestProperty("user-agent",item.getUserAgent());
conn.setRequestProperty("Referer",item.getReferer());
conn.setRequestProperty("Cookie",item.getCookie());
conn.setRequestProperty("Host",item.getHost());
conn.setRequestProperty("Content-Type", item.getContentType());
// 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(item.getPstData());
// 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()));
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();
}
//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;
}
}
class HttpItem{
//访问网址
String URL;
//设置Host的标头信息
String host;
//请求标头值 默认为text/html, application/xhtml+xml, */*
String accept="text/html, application/xhtml+xml, */*";
//请求返回类型默认 text/html
String contentType="text/html";
//客户端访问信息默认Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)
String userAgent="Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";
//Post数据
String pstData="";
// 来源地址，上次访问地址
String referer="";
//Cookie
String cookie="";
//
String connection="Keep-Alive";
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
public String getAccept() {
return accept;
}
public void setAccept(String accept) {
this.accept = accept;
}
public String getContentType() {
return contentType;
}
public void setContentType(String contentType) {
this.contentType = contentType;
}
public String getUserAgent() {
return userAgent;
}
public void setUserAgent(String userAgent) {
this.userAgent = userAgent;
}
public String getPstData() {
return pstData;
}
public void setPstData(String pstData) {
this.pstData = pstData;
}
public String getReferer() {
return referer;
}
public void setReferer(String referer) {
this.referer = referer;
}
public String getCookie() {
return cookie;
}
public void setCookie(String cookie) {
this.cookie = cookie;
}
public String getConnection() {
return connection;
}
public void setConnection(String connection) {
this.connection = connection;
}
public String getURL() {
return URL;
}
public void setURL(String uRL) {
URL = uRL;
}
}
使用方法当然是和飞哥的差不多：
package com.ebbbe.http;
public class test {
public static void main(String[] args) {
// TODO Auto-generated method stub
HttpItem item=new HttpItem();
item.setURL("www.baidu.com");
System.out.print("\n\n"+HttpHelper.sendGet(item));
}
}
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