Java使用HTTPS登录网站代码实现

步骤一，获得网站的登录URL，及Form页元数据

这点可以通过Chrome的F12按键，检查登录时发送的数据包获得（【Preserve Log】建议打勾）。以登录京东网站为例，示范如下：

1，【Network】标签页，【Headers】项，可以查看登录URL

鼠标右键单击【Request URL】参数，选择【Copy Value】即可复制值。

 2，【Network】标签页，【Payload】项，可以获取Form页元数据

同样地，鼠标右键单击各参数，选择【Copy Value】即可复制值。

 步骤二，编写登录代码

package com.clzhang.sample.net;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
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.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.junit.Test;
public class Login2JD {
// 登录URL
public static final String LOGIN_URL = "https://passport.jd.com/uc/loginService?uuid=a4bc68e0-2163-45e7-a60e-2bad2d90bb17<ype=logout&ReturnUrl=https://order.jd.com/center/list.action&r=0.5708092007940808&version=2015";
@Test
public void login() throws IOException {
// 获取连接客户端工具
CloseableHttpClient httpClient = HttpClients.createDefault();
// 参数封装对象
List params = new ArrayList();
try {
params.add(new BasicNameValuePair("uuid", "a4bc68e0-2163-45e7-a60e-2bad2d90bb17"));
params.add(new BasicNameValuePair("eid",
"UGLYRKJMGDSAYCBIQEFQP4QZ3AKIUDCPLHPCY5BEFAL55RMV5XZ3S7RCPNXSWKDD6IEWOMV4EYTCGOFIKTBWIHD5BM"));
params.add(new BasicNameValuePair("fp", "fb63ee37f64f02acb247dbbd015c066a"));
params.add(new BasicNameValuePair("_t", "_t"));
params.add(new BasicNameValuePair("loginType", "c"));
params.add(new BasicNameValuePair("loginname", "13801022222"));
params.add(new BasicNameValuePair("nloginpwd",
"fh/NyoAVnxRwqLRyZOdyehdjaldHfWmpPwioppQMhP2Z4AoBYhUklddJJuhLndlaMAvYF0Ijq6pI95r/JuqiKloPOfBnmA+Hu7kKW6zPv71MocU8sxI0syN+YhujdkNkl9kahpZjZw="));
params.add(new BasicNameValuePair("authcode", "fcd912b70d024852a8ecb98e8db02019"));
params.add(new BasicNameValuePair("pubKey",
"MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDC7kw8r6tq43pwApYvkJ5laljaN9BZb21TAIfT/vexbobzH7Q8SUdP5uDPXEBKzOjx2L28y7Xs1d9v3tdPfKI2LR7PAzWBmDMn8riHrDDNpUpJnlAGUqJG9ooPn8j7YNpcxCa1iybOlc2kEhmJn5uwoanQq+CA6agNkqly2H4j6wIDAQAB"));
params.add(new BasicNameValuePair("sa_token",
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
params.add(new BasicNameValuePair("seqSid", "215692539242879832"));
params.add(new BasicNameValuePair("useSlideAuthCode", "1"));
// 创建POST请求对象
HttpPost httpPost = new HttpPost(LOGIN_URL);
httpPost.addHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
httpPost.addHeader("User-Agent:",
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36");
httpPost.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));
// 执行请求
CloseableHttpResponse respOnse= httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
int code = response.getStatusLine().getStatusCode();
System.out.println("StatusCode: " + code);
String entityStr = EntityUtils.toString(entity, "UTF-8");
System.out.println("返回结果: " + entityStr);
response.close();
} finally {
// 释放资源
if (httpClient != null) {
httpClient.close();
}
}
}
}

步骤三，引用相关包

修改pom.xml，加入如下内容：

<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.13version>
dependency>
<dependency>
<groupId>org.apache.commonsgroupId>
<artifactId>commons-lang3artifactId>
<version>3.4version>
dependency>
<dependency>
<groupId>org.apache.httpcomponentsgroupId>
<artifactId>httpclientartifactId>
<version>4.5.2version>
dependency>
<dependency>
<groupId>org.apache.httpcomponentsgroupId>
<artifactId>httpmimeartifactId>
<version>4.5.2version>
dependency>

补充，如果是简单的HPPS网站登录，可以用如下方式

/**
* 登录到网站的子程序，返回CloseableHttpClient
* @return 登录成功，返回CloseableHttpClient对象
* @throws Exception
*/
private CloseableHttpClient login2JHL() throws Exception {
CloseableHttpClient httpClient = HttpClients.createDefault();
// 创建POST请求对象
HttpPost httpPost = new HttpPost(LOGIN_URL);
httpPost.addHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
httpPost.addHeader("User-Agent:",
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36");
List params = new ArrayList();
params.add(new BasicNameValuePair("username", "myuser1"));
params.add(new BasicNameValuePair("password", "mypassword1"));
// 使用URL实体转换工具
UrlEncodedFormEntity entityParam = new UrlEncodedFormEntity(params, "UTF-8");
httpPost.setEntity(entityParam);
// 执行请求
CloseableHttpResponse respOnse= httpClient.execute(httpPost);
// 获得响应的实体对象
// HttpEntity entity = response.getEntity();
// int code = response.getStatusLine().getStatusCode();
// String entityStr = EntityUtils.toString(entity, "UTF-8");
// System.out.println("StatusCode: " + code);
// System.out.println("返回结果: " + entityStr);

response.close();
return httpClient;
}