用java代码发送http请求的工具类

叁歲伎倆 2022-03-18 07:52 290阅读 0赞

import org.apache.http.HttpEntity;
    import org.apache.http.HttpResponse;
    import org.apache.http.client.methods.HttpGet;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.entity.StringEntity;
    import org.apache.http.impl.client.DefaultHttpClient;
    import org.apache.http.util.EntityUtils;
    
    public class HttpUtil {
    	/**
    	 * java代码发送get请求
    	 * @param url
    	 * @return
    	 */
    	public static String sendGet(String url){
    		// 获取httpClient对象
    		DefaultHttpClient httpClient = new DefaultHttpClient();
    		// 获取请求对象
    		HttpGet httpGet = new HttpGet();
    		
    		String result = null;
    		// 通过client发送get请求
    		try {
    			HttpResponse response = httpClient.execute(httpGet);
    			// 获得状态码  200 成功      404 为找到路径         500 后台程序错误  。。。。
    			int statusCode = response.getStatusLine().getStatusCode();
    			
    			HttpEntity entity = response.getEntity();
    			
    			result = EntityUtils.toString(entity,"UTF-8");
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    		return result;
    	}
    	/**
    	 * 
    	 * @param url
    	 * @return
    	 */
    	public static String sendPost(String url,String params){
    		// 获取httpClient对象
    		DefaultHttpClient httpClient = new DefaultHttpClient();
    		// 获取请求对象
    		HttpPost httpPost = new HttpPost();
    		
    		String result = null;
    		// 通过client发送post请求
    		try {
    			// 设置将参数传递过去
    			httpPost.setEntity(new StringEntity(params,"UTF-8"));
    			
    			HttpResponse response = httpClient.execute(httpPost);
    			// 获得状态码  200 成功      404 为找到路径         500 后台程序错误  。。。。
    			int statusCode = response.getStatusLine().getStatusCode();
    			
    			HttpEntity entity = response.getEntity();
    			
    			result = EntityUtils.toString(entity);
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    		return result;
    	}
    }