模拟PostMan请求，Post请求传json数据

ゝ一纸荒年。 2024-04-17 20:08 73阅读 0赞

*  maven仓

import net.sf.json.JSONObject;
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
    import java.net.URL;
    import java.net.URLConnection;
    import java.util.HashMap;
    import java.util.Map;
    
    public class boke1 { 
    
        public static String sendPost(String url, Map<String, Object> param, String charset) { 
            PrintWriter out = null;
            BufferedReader in = null;
            String result = "";
            String line;
            StringBuffer sb=new StringBuffer();
            try { 
                URL realUrl = new URL(url);
                // 打开和URL之间的连接
                URLConnection conn = realUrl.openConnection();
                // 设置通用的请求属性 设置请求格式
                conn.setRequestProperty("contentType", charset);
                conn.setRequestProperty("content-type", "application/x-www-form-urlencoded");
                //设置超时时间
    // conn.setConnectTimeout(60);
    // conn.setReadTimeout(60);
                // 发送POST请求必须设置如下两行
                conn.setDoOutput(true);
                conn.setDoInput(true);
                // 获取URLConnection对象对应的输出流
                out = new PrintWriter(conn.getOutputStream());
                // 发送请求参数
                out.print(param);
                // flush输出流的缓冲
                out.flush();
                // 定义BufferedReader输入流来读取URL的响应 设置接收格式
                in = new BufferedReader(
                        new InputStreamReader(conn.getInputStream(),charset));
                while ((line = in.readLine()) != null) { 
                    sb.append(line);
                }
                result=sb.toString();
            } 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) { 
            String postUrl = "https://www.sunnaiming.live";
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("name","张三");
            map.put("age",18);
            map.put("sex","男");
            JSONObject jsonMap = JSONObject.fromObject(map);
            System.out.println("map转换json:"+jsonMap);
            System.out.println("Post请求返回数据:"+ anli1.sendPost(postUrl, jsonMap, "utf-8"));
        }
    }