远程接口调用

落日映苍穹つ 2022-09-04 03:44 263阅读 0赞

##### 调用第三方接口简单测试 #####

import java.io.*;
    import java.net.URL;
    import java.net.URLConnection;
    import java.net.URLDecoder;
    import java.net.URLEncoder;
    
    /**
     * @类名： RequestUtils
     * @说明： TODO
     * @作者：
     * @时间： 2021/8/3 16:17
     * @版本：
     */
    public class RequestUtils {
    
        // 对URL encodeData 进行编码
        public static String enCode(String code){
            String encodeData = null;
            try {
                encodeData = URLEncoder.encode(code, "UTF-8")
                        .replaceAll("\\+", "%20")
                        .replaceAll("\\!", "%21")
                        .replaceAll("\\'", "%27")
                        .replaceAll("\\(", "%28")
                        .replaceAll("\\)", "%29")
                        .replaceAll("\\~", "%7E");
            } catch (
                    UnsupportedEncodingException e) {
                e.printStackTrace();
            }
            System.out.println(code+":"+encodeData);      // 结果为：https%3A%2F%2Fwww.baidu.com%2F
    
            return encodeData;
        }
        // 对URL String 进行解码
        public static String enCodej(String code){
                  // 对URL进行解码
            String decodeData = null;
            try {
                decodeData = URLDecoder.decode(code, "UTF-8");
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
            System.out.println(decodeData);
    
            return decodeData;
        }
    
    
        /*
          * @名称：远程发送POST请求
          * @时间：2021/8/3 16:25
          * @参数： 请求路径、 参数  参数可为null  例：&a=11
          * @返回：String
          **/
        public static String requestPost(String url,String value){
    
            //请求
            OutputStreamWriter out = null ;
            BufferedReader in = null;
            StringBuilder result = new StringBuilder();
            try {
                URL realUrl = new URL(url);
                // 打开和URL之间的连接
                URLConnection conn = realUrl.openConnection();
                //设置通用的请求头属性
                conn.setRequestProperty("accept", "*/*");
                conn.setRequestProperty("connection", "Keep-Alive");
                conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
                // 发送POST请求必须设置如下两行   否则会抛异常（java.net.ProtocolException: cannot write to a URLConnection if doOutput=false - call setDoOutput(true)）
                conn.setDoOutput(true);
                conn.setDoInput(true);
                //获取URLConnection对象对应的输出流并开始发送参数
                out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
                //添加参数
                out.write(value);
                out.flush();
                in = new BufferedReader(new InputStreamReader(conn.getInputStream(),"UTF-8"));
                String line;
                while ((line = in.readLine()) != null) {
                    result.append(line);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }finally {// 使用finally块来关闭输出流、输入流
                try {
                    if (out != null) {
                        out.close();
                    }
                    if (in != null) {
                        in.close();
                    }
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            }
            System.out.println(result.toString());
            return result.toString();
        }
    
        public static void main(String[] args) {
            String code = enCode("摩羯座");
            //String url = "http://web.juhe.cn:8080/constellation/getAll?consName=%E5%8F%8C%E9%B1%BC%E5%BA%A7&type=today";
            String url = "http://web.juhe.cn:8080/constellation/getAll?consName="+code+"&type=today";
            String url2 = "http://web.juhe.cn:8080/constellation/getAll?consName=%E5%8F%8C%E9%B1%BC%E5%BA%A7&type=today";
            String url3 = "http://web.juhe.cn:8080/constellation/getAll?consName=%E5%8F%8C%E9%B1%BC%E5%BA%A7&type=today&key=6ac43fb03010950ff20a391c2395f8d0";
            requestPost(url,"key=6ac43fb03010950ff20a391c2395f8d0");
            requestPost(url2,"");
            requestPost(url3,"");
    
        }
    
    }

结果  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDg2MDYw_size_16_color_FFFFFF_t_70]  
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0MDg2MDYw_size_16_color_FFFFFF_t_70]: /images/20220829/759c4de156e640f5838741cc0b3b4b6f.png
[API]: https://www.juhe.cn/