httpclient - get/post - json/form - 请求方/响应方

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

package com.brainlong.framework.util.httpclient;

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));

    }

}

来自：http://my.oschina.net/u/2264370/blog/364415

http://blog.sina.com.cn/s/blog_75a8cfac01013aim.html

http://blog.csdn.net/fireelement/article/details/2497136

http://www.2cto.com/kf/201206/136879.html

http://284772894.iteye.com/blog/1744114