GET/POST请求方式调用第三方接口

这几天正好在弄这个,看了网上的好多博客,然后自己不断的实验.发现了还不错的几个给大家分享.

 /**
     * 向指定 URL 发送POST方法的请求
     * 
     * @param url
     *            发送请求的 URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @param isproxy
     *               是否使用代理模式
     * @return 所代表远程资源的响应结果
     */
    public static String sendPost(String url, String param,boolean isproxy) {
        OutputStreamWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            HttpURLConnection conn = null;
            if(isproxy){//使用代理模式
                @SuppressWarnings("static-access")
                Proxy proxy = new Proxy(Proxy.Type.DIRECT.HTTP, new InetSocketAddress(proxyHost, proxyPort));
                conn = (HttpURLConnection) realUrl.openConnection(proxy);
            }else{
                conn = (HttpURLConnection) realUrl.openConnection();
            }
            // 打开和URL之间的连接
 
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setRequestMethod("POST");    // POST方法
 
 
            // 设置通用的请求属性
 
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
 
            conn.connect();
 
            // 获取URLConnection对象对应的输出流
            out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
            // 发送请求参数
            out.write(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！"+e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
        return result;
    }    
 
    public static void main(String[] args) {
        //demo:代理访问
        String url = "http://api.adf.ly/api.php";
        String para = "key=youkeyid&youuid=uid&advert_type=int&domain=adf.ly&url=http://somewebsite.com";
 
        String sr=HttpRequestUtil.sendPost(url,para,true);
        System.out.println(sr);
    }
 
}
 
/**
     * 发送Http post请求
     * 
     * @param xmlInfo
     *            json转化成的字符串
     * @param URL
     *            请求url
     * @return 返回信息
     */
    public static String doHttpPost(String xmlInfo, String URL) {
        System.out.println("发起的数据:" + xmlInfo);
        byte[] xmlData = xmlInfo.getBytes();
        InputStream instr = null;
        java.io.ByteArrayOutputStream out = null;
        try {
            URL url = new URL(URL);
            URLConnection urlCon = url.openConnection();
            urlCon.setDoOutput(true);
            urlCon.setDoInput(true);
            urlCon.setUseCaches(false);
            urlCon.setRequestProperty("content-Type", "application/json");
            urlCon.setRequestProperty("charset", "utf-8");
            urlCon.setRequestProperty("Content-length",
                    String.valueOf(xmlData.length));
            System.out.println(String.valueOf(xmlData.length));
            DataOutputStream printout = new DataOutputStream(
                    urlCon.getOutputStream());
            printout.write(xmlData);
            printout.flush();
            printout.close();
            instr = urlCon.getInputStream();
            byte[] bis = IOUtils.toByteArray(instr);
            String ResponseString = new String(bis, "UTF-8");
            if ((ResponseString == null) || ("".equals(ResponseString.trim()))) {
                System.out.println("返回空");
            }
            System.out.println("返回数据为:" + ResponseString);
            return ResponseString;
 
        } catch (Exception e) {
            e.printStackTrace();
            return "0";
        } finally {
            try {
                out.close();
                instr.close();
 
            } catch (Exception ex) {
                return "0";
            }
        }

这是原文https://blog.csdn.net/zl834205311/article/details/54341876

 

另外还发现一个可以用的方法

 @SuppressWarnings("deprecation")
		public String testPost(String requestUrl, String requestMethod, String outputStr) {
	    	String str = "";
	    	try {
				HttpClient client = new HttpClient();
				HttpMethod httpMethod = null;
				if ("get".equalsIgnoreCase(requestMethod) || StringUtils.isBlank(requestMethod)) {
					httpMethod = new GetMethod(requestUrl);
				} else if ("post".equalsIgnoreCase(requestMethod)) {
					httpMethod = new PostMethod(requestUrl);
					((PostMethod)httpMethod).setRequestBody(outputStr);
				}
				httpMethod.setRequestHeader("Content-Type", "application/json");
				int code = client.executeMethod(httpMethod);
				
				if (code == 200) {
					str = httpMethod.getResponseBodyAsString();
				}
				httpMethod.releaseConnection();
			} catch (HttpException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;

	    }
	   

 

两种方法都可以用 记录下来!

 

 

2018年08月23日16:47:53

记录一下  刚刚跟前端联调的时候 发现输入中文汉字不能获取数据  最后找出原因  编码问题 关键字 输入有可能是汉字

param = "id="+ id + "&key=" + URLEncoder.encode(key,"UTF-8") + "&number=" + number + "&language=" +language;

所以转了一下 就ok了.