Http请求Demo

Posted 2021-02-21 lzq930

1、maven依赖

<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore -->
<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpcore</artifactId>
    <version>4.4.10</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.6</version>
</dependency>

2、代码

package com.antaiib.atenergy.dao;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

public class HttpURLConnectionHelper {

    public static String sendRequest(String urlParam, String requestType) {
        HttpURLConnection con = null;
        BufferedReader buffer = null;
        StringBuffer resultBuffer = null;

        try {
            URL url = new URL(urlParam);
            //得到连接对象
            con = (HttpURLConnection) url.openConnection();
            //设置请求类型
            con.setRequestMethod(requestType);
            //设置请求需要返回的数据类型和字符集类型
            con.setRequestProperty("Content-Type", "application/json;charset=utf-8");
            //允许写出
            con.setDoOutput(true);
            //允许读入
            con.setDoInput(true);
            //不使用缓存
            con.setUseCaches(false);
            //得到响应码
            int responseCode = con.getResponseCode();

            if (responseCode == HttpURLConnection.HTTP_OK) {
                //得到响应流
                InputStream inputStream = con.getInputStream();
                //将响应流转换成字符串
                resultBuffer = new StringBuffer();
                String line;
                buffer = new BufferedReader(new InputStreamReader(inputStream, "utf-8"));
                while ((line = buffer.readLine()) != null) {
                    resultBuffer.append(line);
                }
                return resultBuffer.toString();
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }

    public static void main(String[] args) throws UnsupportedEncodingException {
        String unitCode = "520200000000";
        String content = "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";

        content = URLEncoder.encode(content,"utf-8");
        String delalUrl ="http://ip地址/energy/dealData?content="+ content +"&unitCode="+unitCode;
        System.out.println(sendRequest(delalUrl,"POST"));

//        String publicKey = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCLz2yI+4AnRDJrKLQxb4kKKv2p5DW+u1iH60Xv+SaVYMADQAdKekBqPMAXWd/CHNqS1HrmtXuojgzHFP3tmAFk5ipvTcPL4RklXulcqQ4xaz8S+cnMBQTbVhgfZhJOGuum6CDnP3+6OEXbfuF9A7dYQvJo+Dho8u+G60qfX2DFFQIDAQAB";
//        publicKey = URLEncoder.encode(publicKey,"utf-8");
//
//        String uploadKeyUrl = "http://ip地址/energy/uploadPublicKey?publicKey=" + publicKey + "&unitCode=" + unitCode;
//
//        System.out.println(sendRequest(uploadKeyUrl, "POST"));
//
//        String checkUrl ="http://ip地址/energy/getPublicKey?unitCode="+unitCode;
//        System.out.println(sendRequest(checkUrl,"GET"));
    }
}