案例描述

在平台A上利用接口模拟调运平台B中功能数据

实现思路

  1. 确定平台B的功能数据正常,获取指定用户token、功能编码、数据ID(只需要一条数据的时候),组成url

  2. 在平台A写接口,利用HttpClientUtil工具类的doPost()方法进行解析并获取数据

  3. 在平台A上写个测试按钮,调运接口进行测试

操作步骤

1. 确定平台B的url

 //定义api,一般情况下这个api的url是第三方提供
String  id = "5qZUoTMjp3LsbO8E4y2";
String apiurl = "http://example.jepaas.com/je/getInfoById"+"?pkValue="+id+"&authorization=6Dy0QDIS7IRuVXzqmYh&tableCode=JE_DEMO_XMINFO";

2. 在平台A写接口,利用HttpClientUtil工具类的doPost()方法进行解析并获取数据

3. 在平台A上写个测试按钮,调运接口进行测试

相关代码

HttpClientUtil代码

package com.project.demo.controller;
import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

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;

public class HttpClientUtilTest {

    /**
     * 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 String doPost(String url, Map<String, String> param) {
        // 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();
            }
        }
        return resultString;
    }

    /**
     * 不带参数的post请求
     * @param url
     * @return String
     */
    public static String 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;
    }
}

接口代码

package com.project.demo.controller;

import com.je.core.base.MethodArgument;
import com.je.core.result.BaseRespResult;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;


@Controller
@RequestMapping(value = "/je/demo/test")
public class TestDemoController {
    @RequestMapping(value = "/testUrl", method = RequestMethod.POST, produces = "application/json; charset=utf-8")
    @ResponseBody
    public BaseRespResult testUrl(MethodArgument param){
        //定义api,一般情况下这个api的url是第三方提供
        String  id = "5qZUoTMjp3LsbO8E4y2";
        String apiurl = "http://example.jepaas.com/je/getInfoById"+"?pkValue="+id+"&authorization=6Dy0QDIS7IRuVXzqmYh&tableCode=JE_DEMO_XMINFO";
        String result="";
        try {
            result = HttpClientUtilTest.doPost(apiurl);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return  BaseRespResult.successResult(result);
    }
}

平台调试

在某个功能上写个按钮,进行Ajax调运测试

调运代码

function(btn,event,eOpts){
var obj = JE.ajax({
       url:'/je/demo/test/testUrl',
       text:false,//返回字符串,如果不配置,返回对象
       params:{}
    });
    if(obj.success){
        console.log(obj);
        JE.alert(obj.obj);
    }else{
        JE.alert('失败,请联系管理员');
    } 
}

后台断点调试

最后编辑: 呼丽华  文档更新时间: 2024-07-05 09:35   作者:呼丽华