Java实现HttpGet和HttpPost请求

maven引入JSON处理jar

   <dependency>

	   <groupId>com.alibaba</groupId>

	   <artifactId>fastjson</artifactId>

	   <version>1.2.58</version>

   </dependency>

maven引入数据源配置，用于log记录

   <dependency>

	<groupId>com.alibaba</groupId>

	<artifactId>druid</artifactId>

	<version>1.1.0</version>

   </dependency>

HttpGet和HttpPost请求



import com.alibaba.druid.support.logging.Log;

import com.alibaba.druid.support.logging.LogFactory;

import com.alibaba.fastjson.JSONObject;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.net.HttpURLConnection;

import java.net.URL;

import java.sql.SQLOutput;

import java.util.Map;

public class ReqHttp {

    private static final Log logger = LogFactory.getLog(ReqHttp.class);

    public static JSONObject get(String reqUrl,Map<String,Object> paramMap) throws IOException {

        StringBuffer param =new StringBuffer();

        for(Map.Entry<String,Object> en:paramMap.entrySet()){

            param.append(en.getKey()+"="+en.getValue()+"&");

        }

        BufferedReader responseReader = null;

        String urlPath = ReqStatUrl.DOMAIN_URL + reqUrl+"?"+param.toString();

        try {

            //建立连接

            URL url = new URL(urlPath);

            HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();

            //设置参数

            httpConn.setDoOutput(true);   //需要输出

            httpConn.setDoInput(true);   //需要输入

            httpConn.setUseCaches(false);  //不允许缓存

            httpConn.setRequestMethod("GET");   //设置GET方式连接

            httpConn.setRequestProperty("Content-Type", "application/json;charset=utf-8");//流信息 可以传输图片音频等信息

            httpConn.setRequestProperty("Charset", "UTF-8");

            httpConn.setRequestProperty("entCode", ReqStatHeader.entCode);//参数常量

            httpConn.setRequestProperty("tokenId", ReqStatHeader.tokenId);//参数常量

            httpConn.setConnectTimeout(30000);

            httpConn.setReadTimeout(30000);

            //连接,也可以不用明文connect，使用下面的httpConn.getOutputStream()会自动connect

            httpConn.connect();

            //获得响应状态

            int resultCode = httpConn.getResponseCode();

            if (HttpURLConnection.HTTP_OK == resultCode) {

                StringBuffer sb = new StringBuffer();

                String readLine = new String();

                responseReader = new BufferedReader(new InputStreamReader(httpConn.getInputStream(), "UTF-8"));

                while ((readLine = responseReader.readLine()) != null) {

                    sb.append(readLine).append("\n");

                }

                System.out.println(sb.toString());

                logger.info(sb.toString());

                JSONObject json = JSONObject.parseObject(sb.toString(),JSONObject.class);

                return json;

            }

        } catch (Exception e) {

            logger.error("get 请求失败："+urlPath);

        } finally {

            if(null != responseReader) responseReader.close();

        }

        return null;

    }

    public static JSONObject post(String reqUrl,Map<String,Object> paramMap) throws Exception {

        BufferedReader responseReader = null;

        OutputStream dos= null;

        String urlPath = ReqStatUrl.DOMAIN_URL + reqUrl;

        try {

            //建立连接

            URL url = new URL(urlPath);

            HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();

            //设置参数

            httpConn.setDoOutput(true);   //需要输出

            httpConn.setDoInput(true);   //需要输入

            httpConn.setUseCaches(false);  //不允许缓存

            httpConn.setRequestMethod("POST");   //设置POST方式连接

            httpConn.setRequestProperty("Content-Type", "application/json;charset=utf-8");//流信息 可以传输图片音频等信息

            httpConn.setRequestProperty("Charset", "UTF-8");

            httpConn.setRequestProperty("entCode", ReqStatHeader.entCode);//参数常量

            httpConn.setRequestProperty("tokenId", ReqStatHeader.tokenId);//参数常量

            httpConn.setConnectTimeout(30000);

            httpConn.setReadTimeout(30000);

            //连接,也可以不用明文connect，使用下面的httpConn.getOutputStream()会自动connect

            httpConn.connect();

            //建立输入流，向指向的URL传入参数

            byte[] jsonObject = JSONObject.toJSONBytes(paramMap);

            dos = httpConn.getOutputStream();

            dos.write(jsonObject);

            dos.flush();

            //获得响应状态

            int resultCode = httpConn.getResponseCode();

            if (HttpURLConnection.HTTP_OK == resultCode) {

                StringBuffer sb = new StringBuffer();

                String readLine = new String();

                responseReader = new BufferedReader(new InputStreamReader(httpConn.getInputStream(), "UTF-8"));

                while ((readLine = responseReader.readLine()) != null) {

                    sb.append(readLine).append("\n");

                }

//                System.out.println(sb.toString());

                logger.info(sb.toString());

                JSONObject json = JSONObject.parseObject(sb.toString(),JSONObject.class);

                return json;

            }

        } catch (Exception e) {

            logger.error("get 请求失败："+urlPath);

        } finally {

            if(null != responseReader) responseReader.close();

            if(null != dos) dos.close();

        }

        return null;

    }

}

常用参数静态引用

public class ReqStatHeader {

    public static String entCode="";

    public static String tokenId="";

    public static  String appCode = "";

    public static  String secret = "";

}

常用API地址静态引用，便于地址维护

public class ReqStatUrl {

    public static String DOMAIN_URL = "https://www.xxxxx.com/xxxx/xxxx";

    /**

     * 认证

     */

    public static String AUTH_LOGIN = "/auth/login";

    /**

     *获取已提交对私报销单据

     */

    public static String REPORT_PERSONAL_SUBMITTED=  "/report/personal/submitted";

    /**

     * 获取已提交对私报销单据详情

     */

    public static String  REPORT_PERSONAL_DETAIL = "/report/personal/detail";

}

巴特西

Java实现HttpGet和HttpPost请求

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