HttpClient封装工具类

public class HttpResult { ???// 响应的状态码 ???private int code; ???// 响应的响应体 ???private String body; ???public int getCode() { ???????return code; ???} ???public void setCode(int code) { ???????this.code = code; ???} ???public String getBody() { ???????return body; ???} ???public void setBody(String body) { ???????this.body = body; ???}}

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.HttpDelete;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.client.methods.HttpPut;import org.apache.http.client.utils.URIBuilder;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.message.BasicNameValuePair;import org.apache.http.util.EntityUtils;/** * 封装HttpClient常用方法 * ?* @author Wonder * */public class ApiService { ???// 每个方法都会用到，提取出来 ???private CloseableHttpClient httpClient; ???public ApiService() { ???????this.httpClient = HttpClients.createDefault(); ???} ???/** ????* 不带参数的get ????* ?????* @param uri ????* @return ????* @throws Exception ????*/ ???public HttpResult doGet(String uri) throws Exception { ???????return this.doGet(uri, null); ???} ???/** ????* 带参数的get请求 ????* ?????* @param url ????* @param map ????* @return ????* @throws Exception ????*/ ???public HttpResult doGet(String url, Map<String, Object> map) throws Exception { ???????// 1.创建URIBuilder ???????URIBuilder uriBuilder = new URIBuilder(url); ???????// 2.设置请求参数 ???????if (map != null) { ???????????// 遍历请求参数 ???????????for (Map.Entry<String, Object> entry : map.entrySet()) { ???????????????// 封装请求参数 ???????????????uriBuilder.setParameter(entry.getKey(), entry.getValue().toString()); ???????????} ???????} ???????// 3.创建请求对象httpGet ???????HttpGet httpGet = new HttpGet(uriBuilder.build()); ???????// 4.使用httpClient发起请求 ???????CloseableHttpResponse response = this.httpClient.execute(httpGet); ???????// 5.解析返回结果，封装返回对象httpResult ???????// 5.1获取状态码 ???????int code = response.getStatusLine().getStatusCode(); ???????// 5.2 获取响应体 ???????// 使用EntityUtils.toString方法必须保证entity不为空 ???????String body = null; ???????if (response.getEntity() != null) { ???????????body = EntityUtils.toString(response.getEntity(), "UTF-8"); ???????} ???????HttpResult result = new HttpResult(); ???????result.setCode(code); ???????result.setBody(body); ???????return result; ???} ???/** ????* 不带参数的post请求 ????* ?????* @param url ????* @return ????*/ ???public HttpResult doPost(String url) throws Exception { ???????return this.doPost(url, null); ???} ???/** ????* 带参数的post请求 ????* ?????* @param url ????* @param map ????* @return ????* @throws Exception ????*/ ???public HttpResult doPost(String url, Map<String, Object> map) throws Exception { ???????// 1. 声明httppost ???????HttpPost httpPost = new HttpPost(url); ???????// 2.封装请求参数，请求数据是表单 ???????// 声明封装表单数据的容器 ???????List<NameValuePair> parameters = new ArrayList<NameValuePair>(0); ???????if (map != null) { ???????????for (Map.Entry<String, Object> entry : map.entrySet()) { ???????????????// 封装请求参数到容器中 ???????????????parameters.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString())); ???????????} ???????} ???????// 创建表单的Entity类 ???????UrlEncodedFormEntity entity = new UrlEncodedFormEntity(parameters, "UTF-8"); ???????// 3. 把封装好的表单实体对象设置到HttpPost中 ???????httpPost.setEntity(entity); ???????// 4. 使用Httpclient发起请求 ???????CloseableHttpResponse response = this.httpClient.execute(httpPost); ???????// 5. 解析返回数据，封装HttpResult ???????// 5.1状态码 ???????int code = response.getStatusLine().getStatusCode(); ???????// 5.2 响应体内容 ???????String body = null; ???????if (response.getEntity() != null) { ???????????body = EntityUtils.toString(response.getEntity(), "UTF-8"); ???????} ???????HttpResult result = new HttpResult(); ???????result.setCode(code); ???????result.setBody(body); ???????return result; ???} ???/** ????* 不带参数的put请求 ????* ?????* @param url ????* @return ????*/ ???public HttpResult doPut(String url) throws Exception { ???????return this.doPut(url, null); ???} ???/** ????* 带参数的put请求 ????* ?????* @param url ????* @param map ????* @return ????* @throws Exception ????*/ ???public HttpResult doPut(String url, Map<String, Object> map) throws Exception { ???????// 1. 声明httpput ???????HttpPut httpPut = new HttpPut(url); ???????// 2.封装请求参数，请求数据是表单 ???????if (map != null) { ???????????// 声明封装表单数据的容器 ???????????List<NameValuePair> parameters = new ArrayList<NameValuePair>(); ???????????for (Map.Entry<String, Object> entry : map.entrySet()) { ???????????????// 封装请求参数到容器中 ???????????????parameters.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString())); ???????????} ???????????// 创建表单的Entity类 ???????????UrlEncodedFormEntity entity = new UrlEncodedFormEntity(parameters, "UTF-8"); ???????????// 3. 把封装好的表单实体对象设置到HttpPost中 ???????????httpPut.setEntity(entity); ???????} ???????// 4. 使用Httpclient发起请求 ???????CloseableHttpResponse response = this.httpClient.execute(httpPut); ???????// 5. 解析返回数据，封装HttpResult ???????// 5.1状态码 ???????int code = response.getStatusLine().getStatusCode(); ???????// 5.2 响应体内容 ???????String body = null; ???????if (response.getEntity() != null) { ???????????body = EntityUtils.toString(response.getEntity(), "UTF-8"); ???????} ???????HttpResult result = new HttpResult(); ???????result.setCode(code); ???????result.setBody(body); ???????return result; ???} ???/** ????* 不带参数的delete ????* ?????* @param uri ????* @return ????* @throws Exception ????*/ ???public HttpResult doDelete(String uri) throws Exception { ???????return this.doDelete(uri, null); ???} ???/** ????* 带参数的delete ????* ?????* @param url ????* @param map ????* @return ????* @throws Exception ????*/ ???public HttpResult doDelete(String url, Map<String, Object> map) throws Exception { ???????// 1.创建URIBuilder ???????URIBuilder uriBuilder = new URIBuilder(url); ???????// 2.设置请求参数 ???????if (map != null) { ???????????// 遍历请求参数 ???????????for (Map.Entry<String, Object> entry : map.entrySet()) { ???????????????// 封装请求参数 ???????????????uriBuilder.setParameter(entry.getKey(), entry.getValue().toString()); ???????????} ???????} ???????// 3.创建请求对象httpGet ???????HttpDelete httpDelete = new HttpDelete(uriBuilder.build()); ???????// 4.使用httpClient发起请求 ???????CloseableHttpResponse response = this.httpClient.execute(httpDelete); ???????// 5.解析返回结果，封装返回对象httpResult ???????// 5.1获取状态码 ???????int code = response.getStatusLine().getStatusCode(); ???????// 5.2 获取响应体 ???????// 使用EntityUtils.toString方法必须保证entity不为空 ???????String body = null; ???????if (response.getEntity() != null) { ???????????body = EntityUtils.toString(response.getEntity(), "UTF-8"); ???????} ???????HttpResult result = new HttpResult(); ???????result.setCode(code); ???????result.setBody(body); ???????return result; ???}}

import java.util.HashMap;import java.util.Map;import org.junit.Test;public class HttpClientTest { ???/** ????* 根据ID来获取数据 ????* GET ????* @throws Exception ?????*/ ???@Test ???public void testGet() throws Exception { ???????????????ApiService service = new ApiService(); ???????????????HttpResult result = service.doGet("http://manager.web.com:8079/rest/item/interface/40"); ???????System.err.println("状态码："+ result.getCode()); ???????System.err.println("数据："+ result.getBody()); ???????????} ???????@Test ???public void testPut() throws Exception { ???????ApiService service = new ApiService(); ???????String url = "http://manager.web.com:8079/rest/item/interface"; ???????Map<String, Object> map = new HashMap<String, Object>(); ???????map.put("id", "40"); ???????map.put("title", "酷派大神"); ???????HttpResult result = service.doPut(url, map); ???????System.err.println("状态码："+ result.getCode()); ???????System.err.println("数据："+ result.getBody()); ???}}