1.引入jar包
<dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.10</version></dependency>2.HttpUtils操作类封装
package com.gnss.gis.utils;import com.gnss.gis.model.http.HttpResult;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
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.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;import java.io.IOException;
import java.util.HashMap;
import java.util.Map;/*** Http Request Tool Class* @author Mr.Li* @date 2022-12-09*/
@Slf4j
public class HttpUtils {private HttpUtils() {}private static CloseableHttpClient httpClient = HttpClientBuilder.create().build();/*** Send Http Post Request* @param url* @param paramsJson* @param headsMap* @return* @throws IOException*/public static HttpResult httpPost(String url, String paramsJson, Map<String, String> headsMap) throws IOException {HttpResult httpResult = new HttpResult();try {CloseableHttpClient httpClient = HttpClients.createDefault();HttpPost httpPost = new HttpPost(url);RequestConfig config = RequestConfig.custom().setConnectionRequestTimeout(3000).setSocketTimeout(3000).setConnectTimeout(3000).build();httpPost.setConfig(config);if (headsMap != null && !headsMap.isEmpty()) {headsMap.forEach((key, value) -> {httpPost.addHeader(key, value);});}else{headsMap=new HashMap<>();}if (headsMap.containsKey("Content-type")) {httpPost.addHeader("Content-type", "application/json;charset=utf-8");}StringEntity stringEntity = new StringEntity(paramsJson, "UTF-8");stringEntity.setContentType("application/json");httpPost.setEntity(stringEntity);CloseableHttpResponse response = httpClient.execute(httpPost);if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {HttpEntity result = response.getEntity();String resultStr = null;if (result != null) {resultStr = EntityUtils.toString(result, "UTF-8");}httpClient.close();response.close();httpResult.setStatus(HttpStatus.SC_OK);httpResult.setResult(resultStr);return httpResult;} else {httpResult.setStatus(response.getStatusLine().getStatusCode());httpResult.setResult("");return httpResult;}}catch (Exception ex) {httpResult.setStatus(HttpStatus.SC_NOT_FOUND);httpResult.setResult(ex.getMessage());return httpResult;}}/*** For get requests without parameters, if the status code is 200, the system returns the body. If the status code is not 200, the system returns null** @param url* @return* @throws Exception*/public static String httpGet(String url,Map<String,String> headerMap) {try {HttpGet httpGet = new HttpGet(url);for(String key:headerMap.keySet()) {httpGet.addHeader(key,headerMap.get(key));}RequestConfig config = RequestConfig.custom().setConnectionRequestTimeout(3000).setSocketTimeout(3000).setConnectTimeout(3000).build();httpGet.setConfig(config);CloseableHttpResponse response = httpClient.execute(httpGet);if(response!=null) {return EntityUtils.toString(response.getEntity(), "UTF-8");}else {return null;}}catch (Exception e) {return null;}}
}Http请求应答结果实体类
package com.gnss.gis.model.http;import lombok.Data;/*** Http 应答* @author Mr.Li* @date 2022-07-27*/
@Data
public class HttpResult {private Integer status;private String result;
}
)
)
