本文共 2177 字，大约阅读时间需要 7 分钟。
package Step1; import org.apache.commons.httpclient.Cookie; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.NameValuePair; import org.apache.commons.httpclient.cookie.CookiePolicy; import org.apache.commons.httpclient.methods.GetMethod; import org.apache.commons.httpclient.methods.PostMethod; /** * * @ClassName: HttpLogin * @Description: java通过httpclient获取cookie模拟登录 * @author zeze * @date 2015年11月10日 下午4:18:08 * */ public class HttpLogin { public static void main(String[] args) { // 登陆 Url String loginUrl = "http://passport.mop.com/?targetUrl=http://hi.mop.com/?&g=1447141423230&loginCheck=UNLOGINED" ; // 需登陆后访问的 Url String dataUrl = "http://hi.mop.com/?" ; HttpClient httpClient = new HttpClient(); // 模拟登陆，按实际服务器端要求选用 Post 或 Get 请求方式 PostMethod postMethod = new PostMethod(loginUrl); // 设置登陆时要求的信息，用户名和密码 NameValuePair[] data = { new NameValuePair( "loginName" , "chzeze123" ), new NameValuePair( "loginPasswd" , "**" ) }; postMethod.setRequestBody(data); try { // 设置 HttpClient 接收 Cookie,用与浏览器一样的策略 httpClient.getParams().setCookiePolicy(CookiePolicy.BROWSER_COMPATIBILITY); int statusCode=httpClient.executeMethod(postMethod); // 获得登陆后的 Cookie Cookie[] cookies = httpClient.getState().getCookies(); StringBuffer tmpcookies = new StringBuffer(); for (Cookie c : cookies) { tmpcookies.append(c.toString() + ";" ); System.out.println( "cookies = " +c.toString()); } if (statusCode== 302 ){ //重定向到新的URL System.out.println( "模拟登录成功" ); // 进行登陆后的操作 GetMethod getMethod = new GetMethod(dataUrl); // 每次访问需授权的网址时需带上前面的 cookie 作为通行证 getMethod.setRequestHeader( "cookie" , tmpcookies.toString()); // 你还可以通过 PostMethod/GetMethod 设置更多的请求后数据 // 例如，referer 从哪里来的，UA 像搜索引擎都会表名自己是谁，无良搜索引擎除外 postMethod.setRequestHeader( "Referer" , "http://passport.mop.com/" ); postMethod.setRequestHeader( "User-Agent" , "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.63 Safari/537.36" ); httpClient.executeMethod(getMethod); // 打印出返回数据，检验一下是否成功 String text = getMethod.getResponseBodyAsString(); System.out.println(text); } else { System.out.println( "登录失败" ); } } catch (Exception e) { e.printStackTrace(); } } } 转载地址：http://zhjab.baihongyu.com/