Spring Boot 调用其它服务接口，传递json参数并接收返回值

蔚落 2022-04-08 09:50 508阅读 0赞

源码参考：[https://blog.csdn.net/daicaho/article/details/81255635][https_blog.csdn.net_daicaho_article_details_81255635]  
参考源码存在bug，调试参考：[https://blog.csdn.net/li\_yan\_fei/article/details/68064275][https_blog.csdn.net_li_yan_fei_article_details_68064275]

下面贴出我个人调试成功的源码：  
HttpCallOtherInterfaceUtils.java

import com.alibaba.fastjson.JSONObject;
    import org.apache.http.HttpResponse;
    import org.apache.http.HttpStatus;
    import org.apache.http.client.HttpClient;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.entity.StringEntity;
    import org.apache.http.impl.client.HttpClients;
    import org.apache.http.util.EntityUtils;
    
    public class HttpCallOtherInterfaceUtils {
        public static String callOtherInterface(JSONObject jsonParam, String port, String postUrl) {
            HttpClient client = HttpClients.createDefault();
            // 要调用的接口方法
            String url = "http://localhost:" + port + postUrl;
            HttpPost post = new HttpPost(url);
            JSONObject jsonObject = null;
            try {
                StringEntity s = new StringEntity(jsonParam.toString(), "UTF-8");
                //s.setContentEncoding("UTF-8");//此处测试发现不能单独设置字符串实体的编码，否则出错！应该在创建对象时创建
                s.setContentType("application/json");
                post.setEntity(s);
                post.addHeader("content-type", "application/json;charset=UTF-8");
                HttpResponse res = client.execute(post);
                if (res.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                    // 返回json格式：
                    jsonObject = JSONObject.parseObject(EntityUtils.toString(res.getEntity()));
                }
            } catch (Exception e) {
                System.out.println("服务间接口调用出错！");
                e.printStackTrace();
                //throw new RuntimeException(e);
            }
            return jsonObject.toString();
        }
    }

TestController.java

@RestController
    @RequestMapping("/aaa")
    public class TestController{
        @PostMapping("/bb")
        public String doPostGetJson() throws ParseException {
            //此处将要发送的数据转换为json格式字符串
            String jsonText = "{'rawText':'您好呀'}";
            JSONObject json = (JSONObject) JSONObject.parse(jsonText);
            System.out.println(json);
            String sr = this.callOtherInterface(json, "1234", "/ccc/dd");
            System.out.println("返回参数：" + sr);
            return sr;
        }
    }

[https_blog.csdn.net_daicaho_article_details_81255635]: https://blog.csdn.net/daicaho/article/details/81255635
[https_blog.csdn.net_li_yan_fei_article_details_68064275]: https://blog.csdn.net/li_yan_fei/article/details/68064275