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SpringBoot-RestTemplate如何實現(xiàn)調(diào)用第三方API

更新時間：2021年08月19日 11:32:30 作者：Lukey Alvin

這篇文章主要介紹了SpringBoot-RestTemplate實現(xiàn)調(diào)用第三方API的操作，具有很好的參考價值，希望對大家有所幫助。如有錯誤或未考慮完全的地方，望不吝賜教

1.在build.grdle加入依賴

implementation('org.springframework.boot:spring-boot-starter-web')

2.在config包下創(chuàng)建一個RestTemlateConfig

配置好相關(guān)信息

package com.qiubao.school.api.config; 
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;
 
@Configuration
public class RestTemplateConfig {
    @Bean
    public RestTemplate restTemplate(ClientHttpRequestFactory factory){
        return new RestTemplate(factory);
    } 
    @Bean
    public ClientHttpRequestFactory simpleClientHttpRequestFactory(){
        SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
        factory.setConnectTimeout(15000);
        factory.setReadTimeout(5000);
        return factory;
    }
}

3.在model包下創(chuàng)建一個新的包

“JuHe”，然后包里創(chuàng)建一個新的類：JuheResult 【Art+insert】選擇CsonFormat

4.Constans類下將調(diào)用接口的AppKey值宏定義

package com.qiubao.school.api.common; 
public interface Constants {   
    String JUHE_KEY         = "e80611926aa6321048bde9ea73d11190";
}

5.在controller包下創(chuàng)建一個

新的類SpringRestTemplateController（調(diào)用第三方的API，瀏覽器模擬get請求，postman模擬post請求）

package com.qiubao.school.api.controller; 
import com.alibaba.fastjson.JSONObject;
import com.qiubao.school.api.common.Constants;
import com.qiubao.school.api.model.Article;
import com.qiubao.school.api.model.juhe.JuheResult;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate; 
import java.util.ArrayList;
import java.util.List;
 
@RestController
@RequestMapping("news")
public class SpringRestTemplateController {
    @Autowired
    private RestTemplate restTemplate;
    /***********HTTP GET method*************/
    @GetMapping("/testGetApi")
    public JuheResult getJson(
            @RequestParam(value = "type", required = false) String type
    ){
        type = StringUtils.isEmpty(type)?"top":type;//定義為可以為空
                                                    // 將調(diào)用接口的Key值宏定義一個名字（Constants類下）
        String url="http://v.juhe.cn/toutiao/index?type="+type+"&key=" + Constants.JUHE_KEY;
                                                    //將Jason格式轉(zhuǎn)換為對象（增強可讀性、易于后期數(shù)據(jù)的更改和增刪）
        JuheResult result = restTemplate.getForObject(url, JuheResult.class);
        return result;
    }
//將調(diào)用的Api的Jason數(shù)據(jù)格式修改為需要的Jason數(shù)據(jù)格式[用到JuheResult方法]
    private List<Article> convertJuhe2Article(JuheResult result) {
        List<Article> articles = new ArrayList<>();
        for (JuheResult.ResultBean.DataBean dataBean:
             result.getResult().getData()) {
            Article article = new Article(); 
 
            article.setUniquekey(dataBean.getUniquekey());
            article.setTitle(dataBean.getTitle());
            article.setAuthor_name(dataBean.getAuthor_name());
            article.setCreateDate(dataBean.getDate());
 
            article.setContent(dataBean.getUrl());
            article.setThumbnail_pic_s(dataBean.getThumbnail_pic_s());
            article.setThumbnail_pic_s02(dataBean.getThumbnail_pic_s02());
            article.setThumbnail_pic_s03(dataBean.getThumbnail_pic_s03());
 
            article.setCategory(dataBean.getCategory());
            article.getCommentCount();
            article.getLikeCount();
            articles.add(article);
        }
        return articles;
    }    
}