[网络协议]JAVA发送HTTP请求附带JSON数据与用户认证

发送POST请求函数样例:

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.RequestEntity;
import org.apache.commons.httpclient.methods.StringRequestEntity;

public String sendPost(String requestUrl, String param)  {
        InputStream inputStream = null;
        try {
            HttpClient httpClient = new HttpClient();
            PostMethod postMethod = new PostMethod(requestUrl);
            // 设置请求头  Content-Type
            postMethod.setRequestHeader("Content-Type", "application/json");
            //Base64加密方式认证方式下的basic auth 
            postMethod.setRequestHeader("Authorization", "Basic " + Base64.getUrlEncoder().encodeToString(("username:password").getBytes()));
            RequestEntity requestEntity = new StringRequestEntity(param,"application/json","UTF-8");
            postMethod.setRequestEntity(requestEntity);
            httpClient.executeMethod(postMethod);// 执行请求
            inputStream =  postMethod.getResponseBodyAsStream();// 获取返回的流
            BufferedReader br = null;
            StringBuffer buffer = new StringBuffer();
            // 将返回的输入流转换成字符串
            br = new BufferedReader(new InputStreamReader(inputStream, Charset.forName("UTF-8")));
            String temp;
            while ((temp = br.readLine()) != null) {
                buffer.append(temp);
            }
            System.out.print("接口返回内容为:" + buffer);
            return buffer.toString();
        } catch (Exception e){
            System.out.print("请求异常" +e.getMessage());
            throw new RuntimeException(e.getMessage());
        } finally {
            if(inputStream != null) {
                try{
                    inputStream.close();
                } catch (IOException e){
                    e.printStackTrace();
                }
            }
        }
    }

测试调用

import com.alibaba.fastjson.JSON;

Map<String, Object> prarms = new HashMap<>();
prarms.put("key", value);
String jsonPrarms = JSON.toJSONString(prarms);
mailEntity.sendPost("http://10.10.10.10:8000/mail", jsonPrarms);