如何使用Apache Httpclient api以XML文档的形式获得响应？

要使用Apache Httpclient API以XML文档的形式获得响应，您需要遵循以下步骤：

1. 首先，确保您已经在项目中添加了Apache Httpclient和相关依赖库。如果您使用的是Maven，可以在pom.xml文件中添加以下依赖：

   <dependency>
       <groupId>org.apache.httpcomponents</groupId>
       <artifactId>httpclient</artifactId>
       <version>4.5.13</version>
    </dependency>
   <dependency>
       <groupId>org.apache.httpcomponents</groupId>
       <artifactId>httpmime</artifactId>
       <version>4.5.13</version>
    </dependency>
</dependencies>

1. 然后，创建一个HttpClient实例，并配置相关参数：

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.HttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.HttpEntity;

import org.apache.http.ParseException;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.util.EntityUtils;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.impl.client.HttpC