httpclient4.5的get和post方法

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package an;import java.io.IOException;import java.net.URI;import java.net.URISyntaxException;import java.util.List;import org.apache.http.HttpEntity;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpUriRequest;import org.apache.http.client.methods.RequestBuilder;import org.apache.http.cookie.Cookie;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.util.EntityUtils;public class PostForm {/* * 自动填单 */public String hcPost() throws ClientProtocolException, IOException, URISyntaxException  {BasicCookieStore cookieStore = new BasicCookieStore();        CloseableHttpClient httpclient = HttpClients.custom()                .setDefaultCookieStore(cookieStore)                .build();        try {            HttpGet httpget = new HttpGet("https://passport.csdn.net/account/login");            CloseableHttpResponse response1 = httpclient.execute(httpget);            try {                HttpEntity entity = response1.getEntity();                System.out.println("Login form get: " + response1.getStatusLine());                EntityUtils.consume(entity);                                System.out.println("Initial set of cookies:");                List<Cookie> cookies = cookieStore.getCookies();                if (cookies.isEmpty()) {                    System.out.println("None");                } else {                    for (int i = 0; i < cookies.size(); i++) {                        System.out.println("- " + cookies.get(i).toString());                    }                }            } finally {                response1.close();            }            HttpUriRequest login = RequestBuilder.post()                    .setUri(new URI("https://passport.csdn.net/account/login"))                    .addParameter("username", "my")                    .addParameter("password", "123")                    //.addParameter("IDToken2", "password")                    .build();            CloseableHttpResponse response2 = httpclient.execute(login);            try {                HttpEntity entity = response2.getEntity();                System.out.println("Login form get: " + response2.getStatusLine());                EntityUtils.consume(entity);                                System.out.println("Post logon cookies:");                List<Cookie> cookies = cookieStore.getCookies();                if (cookies.isEmpty()) {                    System.out.println("None");                } else {                    for (int i = 0; i < cookies.size(); i++) {                        System.out.println("- " + cookies.get(i).toString());                    }                }            } finally {                response2.close();            }        } finally {            httpclient.close();        }        return "yes";}public static void main(String[]args) throws Exception{PostForm pf=new PostForm();                String ret=pf.hcPost();                System.out.println("********"+ret);    }}

httpclient提交后用htmlparser解析内容：

package an;import java.io.IOException;import java.net.URI;import java.net.URISyntaxException;import org.apache.http.HttpEntity;import org.apache.http.ParseException;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpUriRequest;import org.apache.http.client.methods.RequestBuilder;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.util.EntityUtils;import org.htmlparser.Parser;import org.htmlparser.beans.StringBean;import org.htmlparser.util.ParserException;public class PostForm {public String hcPost() throws ClientProtocolException, IOException, URISyntaxException, ParserException, ParseException  {        CloseableHttpClient httpclient = HttpClients.custom().build();        HttpUriRequest post = RequestBuilder.post()                    .setUri(new URI("http://mail.163.com/"))                    .addParameter("username", "my")                    .addParameter("password", "123")                    //.addParameter("IDToken2", "password")                    .build();        CloseableHttpResponse response = httpclient.execute(post);         try {          HttpEntity entity = response.getEntity();//中文乱码            if( response.getStatusLine().getStatusCode() == 200){            StringBean sb = new StringBean ();        sb.setLinks (false);//设置不需要得到页面所包含的链接信息          sb.setReplaceNonBreakingSpaces(true);//设置将不间断空格由正规空格所替代          sb.setCollapse(true);//设置将一序列空格由一个单一空格所代替          Parser parser = new Parser();        parser.setInputHTML(EntityUtils.toString(entity));        parser.reset ();        parser.visitAllNodesWith (sb);        String text = sb.getStrings ();            return text;            }                    } finally { response.close();}        return response.getStatusLine().toString();}public static void main(String[]args) throws Exception{PostForm pf=new PostForm();                String ret=pf.hcPost();                System.out.println("********"+ret);    }}

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