你还不知道怎么用Java代码实现发送post请求、get请求吗？

平时在大家学习工作中，会遇到给你一个接口让你去获取对应数据，里面也包含了post请求和get请求。下面给大家提供对应的工具类。

一、Java代码实现发送get请求

public static String getpage(String tempurl,String bm,String token ) {
        String result="";
        try {
            URL url = new URL(tempurl);
            InputStream is = null;
            URLConnection con=url.openConnection();
            con.addRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            con.setConnectTimeout(120000);
            con.setReadTimeout(120000);
            con.addRequestProperty("x-access-token",token);
            con.connect();
            try {
                is = con.getInputStream();
                BufferedReader reader = null;
                try {
                    reader = new BufferedReader(new InputStreamReader(is,bm));
                    String s="";
                    String linesep = System.getProperty("line.separator");
                    while((s = reader.readLine())!=null){
                        result += s+linesep ;
                    }
                    reader.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }finally {
                    if (reader != null) {
                        try {
                            reader.close();
                        } catch (Exception e1) {
                        }
                    }
                }
                is.close();
            }catch (FileNotFoundException e2) {
                ;
            }
        } catch (Exception e1) {
            e1.printStackTrace();
        }
        return result;
    }

二、Java代码实现发送post请求

   private static final Logger logger = LoggerFactory.getLogger(HttpUtil.class);

   
   public static String sendPost(JSONObject json, String URL,String token) {
        CloseableHttpClient client = HttpClients.createDefault();
        HttpPost post = new HttpPost(URL);
        post.setHeader("Content-Type", "application/json");
        post.setHeader("Authorization", "Basic YWRtaW46");
        post.setHeader("x-access-token",token);
        String result;
        try {
            StringEntity s = new StringEntity(json.toString(), "utf-8");
            s.setContentType(new BasicHeader(HTTP.CONTENT_TYPE,
                    "application/json"));
            post.setEntity(s);
            // 发送请求
            HttpResponse httpResponse = client.execute(post);
            // 获取响应输入流
            InputStream inStream = httpResponse.getEntity().getContent();
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    inStream, "utf-8"));
            StringBuilder strber = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null)
                strber.append(line + "\n");
            inStream.close();
            result = strber.toString();
            if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                System.out.println("请求服务器成功，做相应处理");
            } else {
                System.out.println("请求服务端失败");
            }
        } catch (Exception e) {
            logger.error("请求异常："+e.getMessage());
            throw new RuntimeException(e);
        }
        return result;
    }

在使用过程中注意：各类参数设置正确