基于聚合数据的全国车辆违章的接口示例-Java版

开发环境

前期准备

• 申请接口全国车辆违章
• 购买次数（免费和有赠送次数的可以先行测试）
• 阅读接口文档

maven依赖

	<dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.2.3</version>
            <classifier>jdk15</classifier>
        </dependency>

全部代码

package cn.juhe.demo;


import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;


public class Demo36 {
    //接口请求地址
    public static final String URL = "http://v.juhe.cn/wz/query?hphm=%s&classno=%s&engineno=%s&key=%s";
    //申请接口的请求key
    // TODO: 您需要改为自己的请求key
    public static final String KEY = "您需要改为自己的请求key";


    public static void main(String[] args) {
        // TODO:  车牌号
        String hphm = "车牌号";
        // TODO: 车架号
        String classno = "车架号";
        // TODO: 发动机号
        String engineno = "发动机号";
        print(hphm, classno, engineno);
    }


    
    public static void print(String hphm, String classno, String engineno) {
        //发送http请求的url
        String url = String.format(URL, hphm, classno, engineno, KEY);

        final String response = doGet(url);
        System.out.println(response);
        try {
            JSONObject jsonObject = JSONObject.fromObject(response);
            int error_code = jsonObject.getInt("error_code");
            if (error_code == 0) {
                System.out.println("调用接口成功");
                JSONObject result = jsonObject.getJSONObject("result");
                JSONArray list = result.getJSONArray("lists");
                list.forEach(r -> {
                    JSONObject record = JSONObject.fromObject(r);
                    System.out.println("违章时间：" + record.getString("date"));
                    System.out.println("违章地点：" + record.getString("area"));
                    System.out.println("文书编号：" + record.getString("archiveno"));
                    System.out.println("违章行为：" + record.getString("act"));
                    System.out.println("违章代码：" + record.getString("code"));
                    System.out.println("违章扣分：" + record.getString("fen"));
                    System.out.println("违章罚款：" + record.getString("money"));
                    System.out.println("违章城市：" + record.getString("wzcity"));
                });
            } else {
                System.out.println("调用接口失败：" + jsonObject.getString("reason"));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    
    public static String doGet(String httpUrl) {
        HttpURLConnection connection = null;
        InputStream inputStream = null;
        BufferedReader bufferedReader = null;
        String result = null;// 返回结果字符串
        try {
            // 创建远程url连接对象
            URL url = new URL(httpUrl);
            // 通过远程url连接对象打开一个连接，强转成httpURLConnection类
            connection = (HttpURLConnection) url.openConnection();
            // 设置连接方式：get
            connection.setRequestMethod("GET");
            // 设置连接主机服务器的超时时间：15000毫秒
            connection.setConnectTimeout(15000);
            // 设置读取远程返回的数据时间：60000毫秒
            connection.setReadTimeout(60000);
            // 发送请求
            connection.connect();
            // 通过connection连接，获取输入流
            if (connection.getResponseCode() == 200) {
                inputStream = connection.getInputStream();
                // 封装输入流，并指定字符集
                bufferedReader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));
                // 存放数据
                StringBuilder sbf = new StringBuilder();
                String temp;
                while ((temp = bufferedReader.readLine()) != null) {
                    sbf.append(temp);
                    sbf.append(System.getProperty("line.separator"));
                }
                result = sbf.toString();
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            // 关闭资源
            if (null != bufferedReader) {
                try {
                    bufferedReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (null != inputStream) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (connection != null) {
                connection.disconnect();// 关闭远程连接
            }
        }
        return result;
    }


    
    public static String doPost(String httpUrl, String param) {
        HttpURLConnection connection = null;
        InputStream inputStream = null;
        OutputStream outputStream = null;
        BufferedReader bufferedReader = null;
        String result = null;
        try {
            URL url = new URL(httpUrl);
            // 通过远程url连接对象打开连接
            connection = (HttpURLConnection) url.openConnection();
            // 设置连接请求方式
            connection.setRequestMethod("POST");
            // 设置连接主机服务器超时时间：15000毫秒
            connection.setConnectTimeout(15000);
            // 设置读取主机服务器返回数据超时时间：60000毫秒
            connection.setReadTimeout(60000);
            // 默认值为：false，当向远程服务器传送数据/写数据时，需要设置为true
            connection.setDoOutput(true);
            // 设置传入参数的格式:请求参数应该是 name1=value1&name2=value2 的形式。
            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            // 通过连接对象获取一个输出流
            outputStream = connection.getOutputStream();
            // 通过输出流对象将参数写出去/传输出去,它是通过字节数组写出的
            outputStream.write(param.getBytes());
            // 通过连接对象获取一个输入流，向远程读取
            if (connection.getResponseCode() == 200) {
                inputStream = connection.getInputStream();
                // 对输入流对象进行包装:charset根据工作项目组的要求来设置
                bufferedReader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));
                StringBuilder sbf = new StringBuilder();
                String temp;
                // 循环遍历一行一行读取数据
                while ((temp = bufferedReader.readLine()) != null) {
                    sbf.append(temp);
                    sbf.append(System.getProperty("line.separator"));
                }
                result = sbf.toString();
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            // 关闭资源
            if (null != bufferedReader) {
                try {
                    bufferedReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (null != outputStream) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (null != inputStream) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (connection != null) {
                connection.disconnect();
            }
        }
        return result;
    }
}