使用java获取网络响应内容--Get请求方式

一时失言乱红尘 2021-09-21 13:32 382阅读 0赞

引入的依赖包，也可以去 阿里仓库下载   ————>[前往阿里云仓库][Link 1]

<dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpclient</artifactId>
      <version>4.5.8</version>
    </dependency>

**使用java获取网络内容--Get请求方式**

import org.apache.http.HttpResponse;
    import org.apache.http.client.HttpClient;
    import org.apache.http.client.methods.HttpGet;
    import org.apache.http.entity.ContentType;
    import org.apache.http.impl.client.DefaultHttpClient;
    import org.apache.http.protocol.BasicHttpContext;
    import org.apache.http.util.EntityUtils;
    
    public class HttpUtils {
    
        /**
         *  @Method: 获取浏览器访问内容--get请求
         *  @Result: 浏览器响应内容
         */
        public String GetHttpResponseBody(String URLStr){
            HttpClient httpClient = new DefaultHttpClient();
            BasicHttpContext httpContext = new BasicHttpContext();
            HttpGet httpGet = new HttpGet(URLStr);
            try {
                //将HttpContext对象作为参数传给execute()方法,则HttpClient会把请求响应交互过程中的状态信息存储在HttpContext中
                HttpResponse response = httpClient.execute(httpGet, (org.apache.http.protocol.HttpContext) httpContext);
                org.apache.http.HttpEntity entity = response.getEntity();
                if(null != entity){
                    String httpResponseBody = EntityUtils.toString(entity, ContentType.getOrDefault(entity).getCharset());
                    if(httpResponseBody!=null) {
                        return httpResponseBody;
                    }
                    EntityUtils.consume(entity);
                }
            } catch (Exception e) {
                return e.getLocalizedMessage();
            }finally{
                httpClient.getConnectionManager().shutdown();
            }
            return null;
        }
    
    }

[Link 1]: https://maven.aliyun.com/mvn/search