java - Apache http客户端不存在。错误

Question

嗨，我总是收到错误

test.java:15: package org.apache.commons.httpclient does not exist
import org.apache.commons.httpclient.Cookie;
                                ^
test.java:16: package org.apache.commons.httpclient does not exist
import org.apache.commons.httpclient.HttpState;
                                ^
test.java:17: package org.apache.commons.httpclient does not exist
import org.apache.commons.httpclient.HttpClient;
                                ^
test.java:18: package org.apache.commons.httpclient.methods does not exist
import org.apache.commons.httpclient.methods.GetMethod;
                                        ^
test.java:22: cannot find symbol
symbol  : class HttpClient
location: class test
            HttpClient client = new HttpClient();
            ^
test.java:22: cannot find symbol
symbol  : class HttpClient
location: class test
            HttpClient client = new HttpClient();
                                    ^
test.java:26: cannot find symbol
symbol  : class GetMethod
location: class test
            GetMethod method = new GetMethod("https://online.investools.com/authentication/auth.iedu");
            ^
test.java:26: cannot find symbol
symbol  : class GetMethod
location: class test
            GetMethod method = new GetMethod("https://online.investools.com/authentication/auth.iedu");
                                   ^
test.java:29: cannot find symbol
symbol  : class Cookie
location: class test
                              Cookie[] cookies = client.getState().getCookies();
                              ^
test.java:31: cannot find symbol
symbol  : class Cookie
location: class test
                                    Cookie cookie = cookies[i];
                                    ^
10 errors

编译我用过

javac -cp ;./httpclient-4.2.jar;jsoup-1.6.3.jar test.java

这是代码

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import org.apache.commons.httpclient.Cookie;  
import org.apache.commons.httpclient.HttpState;  
import org.apache.commons.httpclient.HttpClient;  
import org.apache.commons.httpclient.methods.GetMethod; 


public class test{
public static void main (String []args)throws IOException{
    HttpClient client = new HttpClient();  
    client.getParams().setParameter("username", "SomeUSER");  
    client.getParams().setParameter("password", "GF@QT#$WE");  

    GetMethod method = new GetMethod("https://online.investools.com/authentication/auth.iedu");  
        try{  
              client.executeMethod(method);  
              Cookie[] cookies = client.getState().getCookies();  
              for (int i = 0; i < cookies.length; i++) {  
                Cookie cookie = cookies[i];  
                System.err.println(  
                  "Cookie: " + cookie.getName() +  
                  ", Value: " + cookie.getValue() +  
                  ", IsPersistent?: " + cookie.isPersistent() +  
                  ", Expiry Date: " + cookie.getExpiryDate() +  
                  ", Comment: " + cookie.getComment());  
                }  
              client.executeMethod(method);  
        } 
        catch(Exception e) {  
          System.err.println(e);  
        } 
        finally {  
          method.releaseConnection();  
        }

我很困惑，不知道自己做错了什么。我认为这很简单，但我已经检查了几次并且它存在并且 jsoup 编译得很好。谢谢

Answer 1

如果您使用 HttpClient 4.2，我相信您需要 org.apache.http.client (看起来像你)。 org.apache.commons.httpclient 包用于 older version .

编辑:所有httpclient 中的类现在都在http.client 中；有些只是在 http 中。此外，还需要进行其他更改 - 例如，HttpClient 现在是一个接口(interface)，因此您不能像那样实例化它。基本上，您有 3.x 代码，因此您应该将其更新到 4.x 或使用 3.x jar 文件。