java5 --调用接口工具类

本文主要是介绍java5 --调用接口工具类，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

写了一个可以调用的接口的工具类

package com.switchcloudonemachineonegear.utils;

/**
 * @author songxue
 * @date 2022-01-19 16:52
 */
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class RequestUtil {

    /**
     * 带参数的get请求
     * @param url
     * @param param
     * @return String
     */
    public static String doGet(String url, Map<String, String> param) {
        // 创建Httpclient对象
        CloseableHttpClient httpclient = HttpClients.createDefault();

        String resultString = "";
        CloseableHttpResponse response = null;
        try {
            // 创建uri
            URIBuilder builder = new URIBuilder(url);
            if (param != null) {
                for (String key : param.keySet()) {
                    builder.addParameter(key, param.get(key));
                }
            }
            URI uri = builder.build();
            // 创建http GET请求
            HttpGet httpGet = new HttpGet(uri);
            // 执行请求
            response = httpclient.execute(httpGet);
            // 判断返回状态是否为200
            if (response.getStatusLine().getStatusCode() == 200) {
                resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (response != null) {
                    response.close();
                }
                httpclient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }

    /**
     * 不带参数的get请求
     * @param url
     * @return String
     */
    public static String doGet(String url) {
        return doGet(url, null);
    }

    /**
     * 带参数的post请求
     * @param url
     * @param param
     * @return String
     */
    public static Map<String, Object> doPost(String url, Map<String, String> param) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        List<Map<String, Object>> resultList = new ArrayList<>();
        Map<String, Object> result = new HashMap<>();
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            // 创建参数列表
            if (param != null) {
                List<NameValuePair> paramList = new ArrayList<>();
                for (String key : param.keySet()) {
                    paramList.add(new BasicNameValuePair(key, param.get(key)));
                }
                // 模拟表单
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList);
                httpPost.setEntity(entity);
            }
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        Map<String, Object> resultMap = new HashMap<>();
        resultMap.put("total", resultString);
        resultList.add(resultMap);
        return JSON.parseObject(resultString, new TypeReference<Map<String, Object>>() {
        });

    }

    /**
     * 帶token參數的post请求
     * @param url
     * @param headerMap
     * @return String
     */
    public static Map<String, Object> doPostHeader(String url, Map<String, String> headerMap) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        List<Map<String, Object>> resultList = new ArrayList<>();
        Map<String, Object> result = new HashMap<>();
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            //头
            if (headerMap != null && !headerMap.isEmpty()) {
                headerMap.forEach((key, value) -> {
                    httpPost.addHeader(key, value);
                });
            }
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        Map<String, Object> resultMap = new HashMap<>();
        resultMap.put("total", resultString);
        resultList.add(resultMap);
        return JSON.parseObject(resultString, new TypeReference<Map<String, Object>>() {
        });

    }

    /**
     * 不带参数的post请求
     * @param url
     * @return String
     */
    public static Map<String, Object> doPost(String url) {
        return doPost(url, null);
    }

    /**
     * 传送json类型的post请求
     * @param url
     * @param json
     * @return String
     */
    public static String doPostJson(String url, String json) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            // 创建请求内容
            StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
            httpPost.setEntity(entity);
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }
}

调用接口方法

	@Override
    @Scheduled(cron="0 0 0 * * ?")
    public Map<String, Object> getByURL() throws BaseException {
        System.out.println("------定时调度------");

        // 连接设备管理登录接口
        Map<String, String> param1 = new HashMap<>();
        String username = "admin";
        String password = "admin123";
        param1.put("username",username);
        param1.put("password",password);
        String value = "";
        Map<String, Object> maps = RequestUtil.doPost("http://127.0.0.53:9028/build/api/lo", param1);
        // 获取登录的token 用对象接，ConvertUtils是工具类
        LoginURL login = ConvertUtils.parse(maps, LoginURL.class);
        // 获取得到的data信息
        Map<String, String> data = login.getData();
        for (Map.Entry<String, String> entry : data.entrySet()) {
            String key = entry.getKey();
            value = entry.getValue();
        }
        // 拿着token去访问设备列表接口，获取信息列表
        Map<String, String> param = new HashMap<>();
        param.put("token",value);
        Map<String, Object> objectMap = RequestUtil.doPostHeader("http://127.10.6.5:9926/build/api/po/dev/list", param);
        // 同样以对象来接
        LonginDataURL login2 = ConvertUtils.parse(objectMap,LonginDataURL.class);
        // 只获取data中的信息
        List<Map<String, Object>> dataList = login2.getData();
        List<MachineVO> resultList = new ArrayList<>();
        for(Map<String, Object> data1 : dataList) {
            MachineMsg msg = ConvertUtils.parse(data1, MachineMsg .class);
            MachineMsg gearMsg = MachineMsg 
                    .builder()
                    .loNo(msg.getLoNo())
                    .build();
            List<MachineMsg > gearMsgList = machineMsg Mapper.selectMachineMsg (msg);
            if (gearMsgList.size()==0) {
                MachineVOeachVO = new MachineVO();
                // 如果没有就新增
         MachineMsg Mapper.insertMachineMsg (msg);
                // copy same field
                CglibBeanCopierUtils.copy(msg, eachVO);
                resultList.add(eachVO);
            } else {
            // 有的话就更新
            	MachineVOeachVO eachVO = new MachineVOeachVO ();
                MachineMsg Mapper.updateMachineMsg (msg);
                // copy same field
                CglibBeanCopierUtils.copy(msg, eachVO);
                resultList.add(eachVO);
            }

        }
        return R.data(resultList);
    }

这篇关于java5 --调用接口工具类的文章就介绍到这儿，希望我们推荐的文章对大家有所帮助，也希望大家多多支持为之网！