Java使用UniRest发送Http/Https请求

文末附有包装类，复制即用

使用UniRest发送POST、GET、PUT、DELETE请求非常方便，还可以用各种格式的请求体发送请求，比如params格式、body的raw、form-data格式等等。

首先引入maven包，作为依赖包。

		
            com.konghq
            unirest-java
            3.0.00
        
		
		
            com.alibaba
            fastjson
            1.2.49
        

raw格式（json）

	public JSONObject doPost(String url, String json) {
        HttpResponse jsonResponse = null;
        try {
            JsonNode jsonNode = new JsonNode(json);
            jsonResponse = Unirest.post(url)
                    .body(jsonNode)
                    .header("content-type", "application/json")
                    .asJson();
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

raw格式（string）

	public JSONObject doPostBytxt(String url,String txt) {
        HttpResponse jsonResponse = null;
        try {
            jsonResponse = Unirest.post(url)
                    .body(txt)
                    .header("content-type", "application/json")
                    .asString();
        } catch (UnirestException e) {
            e.printStackTrace();
        }

        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

params格式（map）

    public JSONObject doPostByParams(String url, Map map) {
        HttpResponse jsonResponse = null;

        try {
            jsonResponse = Unirest.post(url)
                    .fields(map)
                    .asString();
        } catch (UnirestException e) {
            e.printStackTrace();
        }

        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

无参

	public JSONObject doGet(String url) {
        HttpResponse jsonResponse = null;
        try {
            jsonResponse = Unirest.get(url)
                    .header("content-type", "application/json")
                    .asJson();
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

params格式参数（map）

    public JSONObject doGet(String url,Map map) {
        HttpResponse jsonResponse = null;
        try {
            jsonResponse = Unirest.get(url)
                    .header("content-type", "application/json")
                    .queryString(map)
                    .asJson();
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

无参数（或者参数拼接在url后面的）

    public JSONObject doPut(String url) {
        kong.unirest.HttpResponse jsonResponse = null;
        try {
            jsonResponse = Unirest.put(url)
                    .header("content-type", "application/json")
                    .asJson();
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

raw格式（json）

    public JSONObject doPut(String url, String json) {
        HttpResponse jsonResponse = null;
        try {
            jsonResponse = Unirest.put(url)
                    .body(json)
                    .header("content-type", "application/json")
                    .asJson();
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

无参数

    public JSONObject doDelete(String url) {
        HttpResponse jsonResponse = null;
        try {
            jsonResponse = Unirest.delete(url)
                    .header("content-type", "application/json")
                    .asJson();
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

https请求只需要在这个类里添加一个静态代码块即可

	static {
        Unirest.config().verifySsl(false);
        Unirest.config().connectTimeout(30000);
    }

ps：关于cookie的处理，本人提供一种方法，仅供参考
很多业务场景都会涉及到登陆这个操作，并且大多数接口是基于登陆后拿到的cookie来进行鉴权的。如果没这个cookie，请求会被拒绝，返回402状态码。

我们在这个类里加入一个静态变量，就叫他cookie

  static String cookie = "";

假设你的登陆是post请求
你就加一个判断

    public JSONObject doPost(String url, String json) {
        HttpResponse jsonResponse = null;
        try {
            JsonNode jsonNode = new JsonNode(json);
            jsonResponse = Unirest.post(url)
                    .body(jsonNode)
                    .header("cookie", cookie)//在每个请求方法里都加上这个，即使不需要cookie的请求也不会出错，加就完了
                    .header("content-type", "application/json")
                    .asJson();
			//这里面的逻辑就需要你去解析返回来的cookie格式了
            if (cookie.equals("")) {
                Headers headers = jsonResponse.getHeaders();
                List h = headers.get("Set-cookie");
                for (String s1 : h
                ) {
                    String[] ss = s1.split(";");
                    for (String s2 : ss
                    ) {
                        if (s2.contains("cookie")) {
                            cookie = s2;
                            break;
                        }
                    }
                }
            }
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

一些不常用的我就没写在这里，谢谢，希望对你有所帮助

附上整体代码，复制粘贴即用

import com.alibaba.fastjson.JSONObject;
import kong.unirest.*;
import java.util.List;
import java.util.Map;

public class HttpUtil {
    static {
        Unirest.config().verifySsl(false);
        Unirest.config().connectTimeout(30000);
    }

    static String cookie = "";

    public JSONObject doGet(String url) {
        HttpResponse jsonResponse = null;
        try {
            jsonResponse = Unirest.get(url)
                    .header("content-type", "application/json")
                    .header("cookie", cookie)
                    .asJson();
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

    public JSONObject doGet(String url, Map map) {
        HttpResponse jsonResponse = null;
        try {
            jsonResponse = Unirest.get(url)
                    .header("content-type", "application/json")
                    .header("cookie", cookie)
                    .queryString(map)
                    .asJson();
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

    public JSONObject doPut(String url) {
        kong.unirest.HttpResponse jsonResponse = null;
        try {
            jsonResponse = Unirest.put(url)
                    .header("content-type", "application/json")
                    .header("cookie", cookie)
                    .asJson();
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

    public JSONObject doPut(String url, String json) {
        HttpResponse jsonResponse = null;
        try {
            jsonResponse = Unirest.put(url)
                    .body(json)
                    .header("content-type", "application/json")
                    .header("cookie", cookie)
                    .asJson();
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

    public JSONObject doDelete(String url) {
        HttpResponse jsonResponse = null;
        try {
            jsonResponse = Unirest.delete(url)
                    .header("content-type", "application/json")
                    .header("cookie", cookie)
                    .asJson();
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

    public JSONObject doPost(String url, String json) {
        HttpResponse jsonResponse = null;
        try {
            JsonNode jsonNode = new JsonNode(json);
            jsonResponse = Unirest.post(url)
                    .body(jsonNode)
                    .header("cookie", cookie)
                    .header("content-type", "application/json")
                    .asJson();
            //TODO 这里cookie的获取逻辑需要自己解析来写
            
        } catch (UnirestException e) {
            e.printStackTrace();
        }
        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

    public JSONObject doPostBytxt(String url, String txt) {
        HttpResponse jsonResponse = null;
        try {
            jsonResponse = Unirest.post(url)
                    .body(txt)
                    .header("cookie", cookie)
                    .header("content-type", "application/json")
                    .asString();
        } catch (UnirestException e) {
            e.printStackTrace();
        }

        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

    public JSONObject doPostByForm(String url, Map map) {
        HttpResponse jsonResponse = null;

        try {
            jsonResponse = Unirest.post(url)
                    .fields(map)
                    .header("cookie", cookie)
                    .asString();
        } catch (UnirestException e) {
            e.printStackTrace();
        }

        return JSONObject.parseObject(jsonResponse.getBody().toString());
    }

}