Java后端调用接口post/get

1.post

如图所示,我们经常会遇到传递参数的时候将参数放在header里进行传输,但是接口文档参数是在header的参数,并不是在json体里面的(当然json体里面也会带其他参数)

 

比如我们已post请求为例子

import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
 
 public static String customerClient(String userAccount, String password, String authToken) throws Exception {
        HttpPost httpPost = new HttpPost("http://118.122.126.10:11134/customer-client/custom/load");
        CloseableHttpClient client = HttpClients.createDefault();
        String respContent = null;
        //        json方式
        JSONObject jsonParam = new JSONObject();
        jsonParam.put("userAccount", userAccount);
        jsonParam.put("password", password);
        jsonParam.put("sign", GetSignUtil.getSign(new String[]{userAccount, password}));
        StringEntity entity = new StringEntity(jsonParam.toString(), "utf-8");//解决中文乱码问题
        entity.setContentEncoding("UTF-8");
        entity.setContentType("application/json");
        httpPost.addHeader("userAccount", userAccount);
        httpPost.addHeader("authToken", authToken);
        httpPost.setEntity(entity);
        HttpResponse resp = client.execute(httpPost);//执行时机
        if (resp.getStatusLine().getStatusCode() == 200) {
            HttpEntity he = resp.getEntity();
            respContent = EntityUtils.toString(he, "UTF-8");
        }
        JSONObject jsonObject = JSONObject.parseObject(respContent);
        return respContent;
    }

其中最主要的代码

 httpPost.addHeader("userAccount", userAccount);
 httpPost.addHeader("authToken", authToken);

这样就可以实现带参数或者token,如果想token在postman里面是全局变量也是可以的,请参考其他博客,我只是顺便插一嘴

注意以下方式可能不成功

HttpURLConnection.setDefaultRequestProperty("userAccount", userAccount);//过时

HttpURLConnection.setDefaultRequestProperty("authToken", authToken);//过时

2.get

        HttpGet httpGet = new HttpGet("http://124.239.153.31:9999/user/getCurrentUserInfo");
        HttpClient getClient = HttpClients.createDefault();
        // 设置请求头
        httpGet.addHeader("token", "");
        String respContent1 = null;
        JSONObject jsonParam1 = new JSONObject();
        HttpResponse resp1 = null;//执行时机
        try {
            resp1 = getClient.execute(httpGet);
            if (resp1.getStatusLine().getStatusCode() == 200) {
                HttpEntity he = resp1.getEntity();
                respContent1 = EntityUtils.toString(he, "UTF-8");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        JSONObject jsonObject1 = JSONObject.parseObject(respContent1);