（封装get-Post）访问HTTP 接口1

public static String SMS_GATEWAY_URL = "http://localhost:9090/sms_service/sms";//网关public static SKResult deleteSign(String id){Map<String, String> requestMap = new HashMap<String, String>();requestMap.put("id", id);String requestJson = JSONUtils.toJSONString(requestMap);//map转JSON的另一种方法链接SKResult sk = HttpUtils.doPost(Constants.SMS_GATEWAY_URL+"2002", requestJson, "utf-8");if(sk.isResult()){// 请求成功Map<String, Object> resultMap = (Map<String, Object>) JSONUtils.parse(sk.getObj().toString());if("0000".equals(resultMap.get("ret_code"))){Map<String, Object> map = new HashMap<String, Object>();Map<String, Object> obj = (Map<String, Object>) resultMap.get("obj");int result = (int)(double)obj.get("result");String msg = obj.get("msg")==null?null:(String)obj.get("msg");map.put("ret_result", result);map.put("ret_msg", msg);if(result == 0){return new SKResult(true, "", map);}else{return new SKResult(false, obj.get("errmsg").toString());}}else{return new SKResult(false, "系统异常，请稍后重试");}}else{// 请求失败return new SKResult(false, "系统异常，请稍后重试");}}

<!-- httpclient --><dependency><groupId>commons-httpclient</groupId><artifactId>commons-httpclient</artifactId><version>3.1</version></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.3.4</version></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpmime</artifactId><version>4.2.5</version></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient-osgi</artifactId><version>4.3.4</version></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient-cache</artifactId><version>4.2.5</version></dependency>

import java.io.IOException;import java.io.UnsupportedEncodingException;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.ParseException;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.HttpClients;import org.apache.http.util.EntityUtils;public class HttpUtils{/** * 发送http post json数据请求 * @param url * @param reqstr          json 格式，可通过map组装参数转换为json * @return */public static SKResult doPost(String url, String reqstr, String charset){System.out.println(String.format("请求URL：%s", url));System.out.println(String.format("请求数据：%s", reqstr));HttpClient httpClient = HttpClients.createDefault();HttpPost httpPost = new HttpPost(url);try {StringEntity s = new StringEntity(reqstr,charset);s.setContentEncoding(charset);s.setContentType("application/json");httpPost.setEntity(s);HttpResponse httpResponse = httpClient.execute(httpPost);int statusCode = httpResponse.getStatusLine().getStatusCode();if(statusCode==HttpStatus.SC_OK){//org.apach.http// 请求成功System.out.println("请求成功");String responseStr = EntityUtils.toString(httpResponse.getEntity(), charset);System.out.println(String.format("返回数据：%s", responseStr));return new SKResult(true, "请求成功", responseStr);}else{// 请求失败System.out.println("请求失败");return new SKResult(false, String.format("请求失败[%d-%s]", statusCode, httpResponse.getStatusLine().getReasonPhrase()));}} catch (UnsupportedEncodingException e) {e.printStackTrace();return new SKResult(false, "请求参数格式错误");} catch (ClientProtocolException e) {e.printStackTrace();return new SKResult(false, "请求异常");} catch (ParseException e) {e.printStackTrace();return new SKResult(false, "返回数据解析异常");} catch (IOException e) {e.printStackTrace();return new SKResult(false, "网络异常");}}   /**     * 向指定URL发送GET方法的请求     *      * @param url     *            发送请求的URL     * @param param     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。     * @return URL 所代表远程资源的响应结果     */    public static String sendGet(String url) {        String result = "";        BufferedReader in = null;        try {            String urlNameString = url;            URL realUrl = new URL(urlNameString);            // 打开和URL之间的连接            URLConnection connection = realUrl.openConnection();            // 设置通用的请求属性            connection.setRequestProperty("accept", "*/*");            connection.setRequestProperty("connection", "Keep-Alive");            connection.setRequestProperty("user-agent",                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");            // 建立实际的连接            connection.connect();            // 获取所有响应头字段//            Map<String, List<String>> map = connection.getHeaderFields();            // 遍历所有的响应头字段//            for (String key : map.keySet()) {//                System.out.println(key + "--->" + map.get(key));//            }            // 定义 BufferedReader输入流来读取URL的响应            in = new BufferedReader(new InputStreamReader(                    connection.getInputStream()));            String line;            while ((line = in.readLine()) != null) {                result += line;            }        } catch (Exception e) {            System.out.println("发送GET请求出现异常！" + e);            e.printStackTrace();        }        // 使用finally块来关闭输入流        finally {            try {                if (in != null) {                    in.close();                }            } catch (Exception e2) {                e2.printStackTrace();            }        }        System.out.println(result);        return result;    }}

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package com.impay.smsmer.domain;/** *  * @author zhouy * */public class SKResult {// 状态private boolean result;// 信息private String respMsg;// 对象private Object obj;public SKResult(boolean result, String respMsg) {super();this.result = result;this.respMsg = respMsg;}public SKResult(boolean result, String respMsg, Object obj) {super();this.result = result;this.respMsg = respMsg;this.obj = obj;}public boolean isResult() {return result;}public void setResult(boolean result) {this.result = result;}public String getRespMsg() {return respMsg;}public void setRespMsg(String respMsg) {this.respMsg = respMsg;}public Object getObj() {return obj;}public void setObj(Object obj) {this.obj = obj;}@Overridepublic String toString() {return "SKResult [result=" + result + ", respMsg=" + respMsg + ", obj="+ obj + "]";}}