[网络协议]【JAVA】HTTP工具包

GET
1、无header

public static String okHttpSendGet(String url) {
        try {
            Request request = new Request.Builder().url(url).build();
            return okHttpSendGet(request);
        } catch (Exception e) {
            throw new RuntimeException(e.getMessage(), e);
        }
    }

2、有header

public static String okHttpSendGet(String url, Map<String, String> header) {
        try {
            Request.Builder builder = new Request.Builder().url(url);
            if (header != null) {
                for (Map.Entry<String, String> entry : header.entrySet()) {
                    builder.addHeader(entry.getKey(), entry.getValue());
                }
            }
            Request request = builder.build();
            return okHttpSendGet(request);
        } catch (Exception e) {
            throw new RuntimeException(e.getMessage(), e);
        }
    }

POST

 public static String sendPost(String url, Map<String, String> header, String param) {
        MediaType mediaType = MediaType.parse("application/json; charset=utf-8");
        RequestBody requestBody = RequestBody.create(mediaType, param);
        Request.Builder builder = new Request.Builder()
                .url(url)
                .post(requestBody);

        if (header != null) {
            for (Map.Entry<String, String> entry : header.entrySet()) {
                builder.addHeader(entry.getKey(), entry.getValue());
            }
        }
        Request request = builder.build();
        try (Response response = okHttpClient.newCall(request).execute();
             ResponseBody responseBody = response.body()) {
            if (response.code() == 200) {
                if (responseBody == null) {
                    return null;
                } else {
                    return responseBody.string();
                }
            } else {
                return null;
            }
        } catch (IOException e) {
            log.error("httpUtil错误", e);
        }
        return null;
    }

response解析成JSON

JsonParser jsonParser = new JsonParser();
JsonObject jsonObject = jsonParser.parse(responseJson).getAsJsonObject();

response 解析成对象

Gson gson = new GsonBuilder().create();
HttpResponse response = gson.fromJson(httpResult, HttpResponse.class);