在用HttpClient 的最新版本4.3.3寫一個網站註冊時，出現了cookie rejected的問題。就是拒絕寫入cookie，雖然沒影響最終的註冊結果，但問題總需要解決的。於是在搜尋了網上的解決辦法，發現那都是過去的舊版本的解決辦法。新版本的4.3.3沒有相關的解決辦法不過總算知道那是cookie的策略設定問題。於是看了官方網站的文件http://hc.apache.org/httpcomponents-client-4.3.x/tutorial/html/statemgmt.html#d5e553，總算將問題解決了。

網上關於HttpClient4.3.3的開發文件還是比較少，於是寫一個HttpClient4.3.3 post請求的程式碼，包括讀取cookie等內容，程式碼如下:

package com.post.test;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URLDecoder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;

import org.apache.http.Consts;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.config.CookieSpecs;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.cookie.Cookie;
import org.apache.http.cookie.CookieOrigin;
import org.apache.http.cookie.CookieSpec;
import org.apache.http.cookie.CookieSpecProvider;
import org.apache.http.cookie.MalformedCookieException;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.cookie.BestMatchSpecFactory;
import org.apache.http.impl.cookie.BrowserCompatSpec;
import org.apache.http.impl.cookie.BrowserCompatSpecFactory;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HttpContext;

public class Test {

public static void main(String[] args) throws IOException {
String url="http://localhost/";
HashMap<String, String> hashMap=new  HashMap<String, String>();
hashMap.put("username", "test");
hashMap.put("password", "123456");
String content=doPost(url, hashMap);
System.out.println("content="+content);

}

private static String doPost(String url, HashMap<String, String> hashMap)
throws IOException {
String content = "";
BasicCookieStore cookieStore = new BasicCookieStore();
CookieSpecProvider easySpecProvider = new CookieSpecProvider() {
public CookieSpec create(HttpContext context) {

return new BrowserCompatSpec() {
@Override
public void validate(Cookie cookie, CookieOrigin origin)
throws MalformedCookieException {
// Oh, I am easy
}
};
}

};
Registry<CookieSpecProvider> r = RegistryBuilder
.<CookieSpecProvider> create()
.register(CookieSpecs.BEST_MATCH, new BestMatchSpecFactory())
.register(CookieSpecs.BROWSER_COMPATIBILITY,
new BrowserCompatSpecFactory())
.register("easy", easySpecProvider).build();

RequestConfig requestConfig = RequestConfig.custom()
.setCookieSpec("easy").setSocketTimeout(10000)
.setConnectTimeout(10000).build();

CloseableHttpClient httpclient = HttpClients.custom()
.setDefaultCookieSpecRegistry(r)
.setDefaultRequestConfig(requestConfig)
.setDefaultCookieStore(cookieStore)

.build();
List<NameValuePair> nvps = new ArrayList<NameValuePair>();
if (hashMap != null) {
Iterator<String> it = hashMap.keySet().iterator();
while (it.hasNext()) {

String key = it.next();
String value = hashMap.get(key);
nvps.add(new BasicNameValuePair(key, value));
}
}

HttpPost httpPost = new HttpPost(url);
httpPost.setHeader("Accept",
"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
httpPost.setHeader("Accept-Encoding", "gzip, deflate");
httpPost.setHeader("Accept-Language", "en-US,en;q=0.5");
httpPost.setHeader("Cache-Control", "max-age=0");
httpPost.setHeader("Connection", "keep-alive");
httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded");

httpPost.setHeader(
"User-Agent",
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:28.0) Gecko/20100101 Firefox/28.0");
// 如果引數是中文，需要進行轉碼
httpPost.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8));

CloseableHttpResponse response = null;
try {
response = httpclient.execute(httpPost);

HttpEntity entity = response.getEntity();
for (Header s : response.getAllHeaders()) {
System.out.println("post header====" + s);
}
InputStream is = entity.getContent();
BufferedReader in = new BufferedReader(new InputStreamReader(is,
Consts.UTF_8));
String line = "";
while ((line = in.readLine()) != null) {

content += line;
}

List<Cookie> cookies = cookieStore.getCookies();
if (cookies.isEmpty()) {
System.out.println("None");
} else {
//讀取Cookie
for (int i = 0; i < cookies.size(); i++) {
System.out.println("post request - "
+ cookies.get(i).toString());
}
}

} finally {
if(response!=null)
response.close();
}
return content;
}
}
 

 http://www.tuicool.com/articles/MZ36Zz

http://blog.csdn.net/zjweii/article/details/28597031