JAVA发送http post 请求、get请求

1、写一个HttpRequestUtils工具类，包括post请求和get请求

import net.sf.json.JSONObject;
import org.apache.commons.httpclient.HttpStatus;
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;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.net.URLDecoder;

public class HttpRequestUtils {
    private static Logger logger = LoggerFactory.getLogger(HttpRequestUtils.class);    //日志记录

    /**
     * httpPost
     * @param url  路径
     * @param jsonParam 参数
     * @return
     */
    public static JSONObject httpPost(String url,JSONObject jsonParam){
        return httpPost(url, jsonParam, false);
    }

    /**
     * post请求
     * @param url         url地址
     * @param jsonParam     参数
     * @param noNeedResponse    不需要返回结果
     * @return
     */
    public static JSONObject httpPost(String url,JSONObject jsonParam, boolean noNeedResponse){
        //post请求返回结果
        DefaultHttpClient httpClient = new DefaultHttpClient();
        JSONObject jsonResult = null;
        HttpPost method = new HttpPost(url);
        try {
            if (null != jsonParam) {
                //解决中文乱码问题
                StringEntity entity = new StringEntity(jsonParam.toString(), "utf-8");
                entity.setContentEncoding("UTF-8");
                entity.setContentType("application/json");
                method.setEntity(entity);
            }
            HttpResponse result = httpClient.execute(method);
            url = URLDecoder.decode(url, "UTF-8");
            /**请求发送成功，并得到响应**/
            if (result.getStatusLine().getStatusCode() == 200) {
                String str = "";
                try {
                    /**读取服务器返回过来的json字符串数据**/
                    str = EntityUtils.toString(result.getEntity());
                    if (noNeedResponse) {
                        return null;
                    }
                    /**把json字符串转换成json对象**/
                    jsonResult = JSONObject.fromObject(str);
                } catch (Exception e) {
                    logger.error("post请求提交失败:" + url, e);
                }
            }
        } catch (IOException e) {
            logger.error("post请求提交失败:" + url, e);
        }
        return jsonResult;
    }

    /**
     * 发送get请求
     * @param url    路径
     * @return
     */
    public static JSONObject httpGet(String url){
        //get请求返回结果
        JSONObject jsonResult = null;
        try {
            DefaultHttpClient client = new DefaultHttpClient();
            //发送get请求
            HttpGet request = new HttpGet(url);
            HttpResponse response = client.execute(request);

            /**请求发送成功，并得到响应**/
            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                /**读取服务器返回过来的json字符串数据**/
                String strResult = EntityUtils.toString(response.getEntity());
                /**把json字符串转换成json对象**/
                jsonResult = JSONObject.fromObject(strResult);
                url = URLDecoder.decode(url, "UTF-8");
            } else {
                logger.error("get请求提交失败:" + url);
            }
        } catch (IOException e) {
            logger.error("get请求提交失败:" + url, e);
        }
        return jsonResult;
    }
}

2、写业务代码发送Http请求

3、MVC配置文件设置Controller扫描目录

<!-- 自动扫描且只扫描@Controller -->
<context:component-scan base-package="com.wiselong.multichannel" use-default-filters="false">
    <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>

4、接收Http请求

接收post请求

@Controller
@RequestMapping(value = "/api/platform/exceptioncenter/exceptioninfo")
public class ExceptionInfoController {
    //注入
    @Autowired
    private ExceptionInfoBiz exceptionInfoBiz;

    /**
     * 创建异常信息请求
     * @param requestBody 请求消息内容
     * @param request 请求消息头
     * @return jsonObject
     */
    @RequestMapping(
            value="/create",
            method = RequestMethod.POST
    )
    public ModelAndView createExceptionInfo(@RequestBody String requestBody, HttpServletRequest request) {
        JSONObject jsonObject = JSONObject.fromObject(requestBody);
        ComExceptionInfo comExceptionInfo = new ComExceptionInfo();
        comExceptionInfo.setProjectName(jsonObject.getString("projectName"));
        comExceptionInfo.setTagName(jsonObject.getString("tagName"));
        exceptionInfoBiz.insert(comExceptionInfo);
        //返回请求结果
        JSONObject result= new JSONObject();
        result.put("success", "true");
        return new ModelAndView("", ResponseUtilsHelper.jsonSuccess(result.toString()));
    }
  }

接收get请求

@Controller
@RequestMapping(value="/api/platform/messagecenter/messages/sms")
public class SmsController {
    @Autowired
    SmsSendBiz smsSendBiz;

    /**
     * 接收手机号码和内容往短信发送表插入一条记录
     * @param requestbody 请求消息内容
     * @param request 请求消息头
     * @return jsonObject
     */
    @RequestMapping(
            value="/send",
            method= RequestMethod.GET
    )
    public ModelAndView sendSms(@RequestBody String requestbody, HttpServletRequest request) {
        //获取请求URL及url后面传输的参数
        String url = request.getRequestURL() + "?" + request.getQueryString();
        url = BuildRequestUrl.decodeUrl(url);
        String telePhone = RequestUtils.getStringValue(request, "telePhone");
        String content = RequestUtils.getStringValue(request, "content");
        smsSendBiz.insertTtMsQuequ(telePhone,content);
        return new ModelAndView("", ResponseUtilsHelper.jsonResult("", true));
    }
}