RPC之http调用

悠悠 2024-04-17 17:36 61阅读 0赞

httpClien调用URL 并传递参数获取返回值方法：

package com.delta.whLab.httpClient;
    import java.nio.charset.Charset;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.Map;
    
    import org.apache.http.NameValuePair;
    import org.apache.http.client.entity.UrlEncodedFormEntity;
    import org.apache.http.client.methods.CloseableHttpResponse;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.entity.StringEntity;
    import org.apache.http.impl.client.CloseableHttpClient;
    import org.apache.http.impl.client.HttpClients;
    import org.apache.http.message.BasicHeader;
    import org.apache.http.message.BasicNameValuePair;
    import org.apache.http.util.EntityUtils;
    
    import com.alibaba.fastjson.JSON;
    import com.alibaba.fastjson.JSONObject;
    
    public class LogHttpClient {
    	private static final int SUCCESS_CODE = 200;
    
    	/**
    	 * 发送POST请求
    	 * 
    	 * @param url
    	 * @param nameValuePairList
    	 * @return JSON或者字符串
    	 * @throws Exception
    	 */
    	public static Object sendPost(String url, List<NameValuePair> nameValuePairList) throws Exception {
    		JSONObject jsonObject = null;
    		CloseableHttpClient client = null;
    		CloseableHttpResponse response = null;
    		try {
    			/**
    			 * 创建一个httpclient对象
    			 */
    			client = HttpClients.createDefault();
    			/**
    			 * 创建一个post对象
    			 */
    			HttpPost post = new HttpPost(url);
    			/**
    			 * 包装成一个Entity对象
    			 */
    			
    			//把传入的List转换为JSONObject
    			String jsonObjectTemp = JSON.toJSONString(nameValuePairList.get(0));
    			System.out.println("jsonObjectTemp is:"+jsonObjectTemp);
    			//StringEntity entity = new UrlEncodedFormEntity(nameValuePairList, "UTF-8");
    			StringEntity entity =  new StringEntity(jsonObjectTemp);
    			entity.setContentEncoding("UTF-8");
    			entity.setContentType("application/json");
    			
    			System.out.println("entity is:"+entity.toString());
    			/**
    			 * 设置请求的内容
    			 */
    			post.setEntity(entity);
    			/**
    			 * 设置请求的报文头部的编码
    			 */
    			post.setHeader(new BasicHeader("Content-Type", "application/json;charset=UTF-8"));
    			/**
    			 * 设置请求的报文头部的编码
    			 */
    			post.setHeader(new BasicHeader("Accept", "*/*"));
    			
    			//post.setHeader("token","cY+m7hOS9syYmJum7hOS9s0BkZWx0YXd3LmNvbWM=5");
    			/**
    			 * 执行post请求
    			 */
    			response = client.execute(post);
    			/**
    			 * 获取响应码
    			 */
    			int statusCode = response.getStatusLine().getStatusCode();
    			if (SUCCESS_CODE == statusCode) {
    				/**
    				 * 通过EntityUitls获取返回内容
    				 */
    				String result = EntityUtils.toString(response.getEntity(), "UTF-8");
    				/**
    				 * 转换成json,根据合法性返回json或者字符串
    				 */
    				try {
    					jsonObject = JSONObject.parseObject(result);
    					return jsonObject;
    				} catch (Exception e) {
    					return result;
    				}
    			} else {
    				// LOGGER.error("HttpClientService-line: {}, errorMsg：{}", 146, "POST请求失败！");
    			}
    		} catch (Exception e) {
    			// LOGGER.error("HttpClientService-line: {}, Exception：{}", 149, e);
    		} finally {
    			response.close();
    			client.close();
    		}
    		return null;
    	}
    	
    	
    	
    	public static Object sendPost2(String url, List<Map<String, String>> nameValuePairList) throws Exception {
    		JSONObject jsonObject = null;
    		CloseableHttpClient client = null;
    		CloseableHttpResponse response = null;
    		try {
    			/**
    			 * 创建一个httpclient对象
    			 */
    			client = HttpClients.createDefault();
    			/**
    			 * 创建一个post对象
    			 */
    			HttpPost post = new HttpPost(url);
    			/**
    			 * 包装成一个Entity对象
    			 */
    			
    			//把传入的List转换为JSONObject
    			String jsonObjectTemp = JSON.toJSONString(nameValuePairList.get(0));
    			//System.out.println("jsonObjectTemp is:"+jsonObjectTemp);
    			//StringEntity entity = new UrlEncodedFormEntity(nameValuePairList, "UTF-8");
    			StringEntity entity =  new StringEntity(jsonObjectTemp);
    			entity.setContentEncoding("UTF-8");
    			entity.setContentType("application/json");
    			
    			//System.out.println("entity is:"+entity.toString());
    			/**
    			 * 设置请求的内容
    			 */
    			post.setEntity(entity);
    			/**
    			 * 设置请求的报文头部的编码
    			 */
    			post.setHeader(new BasicHeader("Content-Type", "application/json;charset=UTF-8"));
    			/**
    			 * 设置请求的报文头部的编码
    			 */
    			post.setHeader(new BasicHeader("Accept", "*/*"));
    			
    			//post.setHeader("token","cY+m7hOS9syYmJum7hOS9s0BkZWx0YXd3LmNvbWM=5");
    			
    			//HttpPost method = new HttpPost(url);
    			try {
    				if(null != jsonObjectTemp) {
    					post.addHeader("Content-Type", "application/json;charset=UTF-8");
    					post.addHeader("Accept", "application/json");
    					post.setEntity(new StringEntity(jsonObjectTemp.toString(),Charset.forName("UTF-8")));
    				}
    			} catch (Exception e) {
    				// TODO: handle exception
    			}
    			/**
    			 * 执行post请求
    			 */
    			response = client.execute(post);
    			/**
    			 * 获取响应码
    			 */
    			int statusCode = response.getStatusLine().getStatusCode();
    			if (SUCCESS_CODE == statusCode) {
    				/**
    				 * 通过EntityUitls获取返回内容
    				 */
    				String result = EntityUtils.toString(response.getEntity(), "UTF-8");
    				/**
    				 * 转换成json,根据合法性返回json或者字符串
    				 */
    				try {
    					jsonObject = JSONObject.parseObject(result);
    					return jsonObject;
    				} catch (Exception e) {
    					return result;
    				}
    			} else {
    				// LOGGER.error("HttpClientService-line: {}, errorMsg：{}", 146, "POST请求失败！");
    			}
    		} catch (Exception e) {
    			// LOGGER.error("HttpClientService-line: {}, Exception：{}", 149, e);
    		} finally {
    			response.close();
    			client.close();
    		}
    		return null;
    	}
    
    	public static List<NameValuePair> getParams(Object[] params, Object[] values) {
    		/**
    		 * 校验参数合法性
    		 */
    		boolean flag = params.length > 0 && values.length > 0 && params.length == values.length;
    		if (flag) {
    			List<NameValuePair> nameValuePairList = new ArrayList<>();
    			for (int i = 0; i < params.length; i++) {
    				nameValuePairList.add(new BasicNameValuePair(params[i].toString(), values[i].toString()));
    			}
    			return nameValuePairList;
    		} else {
    			// LOGGER.error("HttpClientService-line: {}, errorMsg：{}", 197,
    			// "请求参数为空且参数长度不一致");
    		}
    		return null;
    	}
    
    }