java代码中调用HTTP接口获取返回数据

项目中需要在接口内部访问另一个接口，在这里使用jodd工具包来实现,相对来说比较简单
1.引入jodd-http的依赖

    org.jodd
    jodd-http
    3.6.2

2.编写工具类,实现get/post请求的发送

package com.uticket.common.util;

import cn.hutool.core.collection.CollectionUtil;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import jodd.http.HttpRequest;
import jodd.http.HttpResponse;
import lombok.extern.slf4j.Slf4j;

import java.util.Map;


@Slf4j
public class HttpUtil {
    private static final ObjectMapper mapper = new ObjectMapper();
    
    public  static String sendHttpGet(String url, Map params) throws Exception {
        HttpRequest request = HttpRequest.get(url);
        if(!CollectionUtil.isEmpty(params)){
            request.query(params);
        }
        HttpResponse response = request.send();
        String bodyText = response.bodyText();
        bodyText = transFormToUtf8(bodyText);
        return bodyText;
    }

    
    public static String sendHttpPostJosn(String url, Map params){
        HttpRequest request = HttpRequest.post(url);
        request.contentType("application/json");
        request.charset("utf-8");
        if(!CollectionUtil.isEmpty(params)){
            try {
                request.body(mapper.writevalueAsString(params));
            } catch (JsonProcessingException e) {
                log.error("write paramter [" + params.toString() + "] to josn fail",e.getMessage(),e);
            }
        }
        HttpResponse response = request.send();
        return response.bodyText();
    }

    
    public static String sendHttpPost(String url, Map params){
        HttpRequest request = HttpRequest.post(url);
        if(!CollectionUtil.isEmpty(params)) {
            request.form(params);
        }
        HttpResponse response = request.send();
        return response.bodyText();
    }


    
    private static String transFormToUtf8(String source) throws Exception{
        return new String(source.getBytes(),"utf-8");
    }
}

3.测试类

String url = "";
String result = null;
try {
    result = HttpUtil.sendHttpGet(url, null);
} catch (Exception e) {
    log.error("查询失败....." + url,e.getMessage(),e);
}
System.out.println(result);