java学习 -- Okhttp发送网络请求

添加dependency

        <!-- https://mvnrepository.com/artifact/com.squareup.okhttp3/okhttp -->
        <dependency>
            <groupId>com.squareup.okhttp3</groupId>
            <artifactId>okhttp</artifactId>
            <version>4.1.0</version>
        </dependency>

发送get请求

官方例子：https://github.com/square/okhttp/blob/master/samples/guide/src/main/java/okhttp3/guide/GetExample.java
照着写了个百度的请求如下：

    @Test
    public void testBaidu() throws IOException {
        OkHttpClient client = new OkHttpClient();

        Request request = new Request.Builder()
                .url("http://www.baidu.com")
                .build();

        Response response = client.newCall(request).execute();
        String respon = Objects.requireNonNull(response.body()).string();
        System.out.println(respon);

    }

发送带参数的get请求

加参数的方法是拼接在url中，地址和参数用“？”隔开，多个参数之间用“&”隔开。

public void testWeiboList(String uid) throws IOException {

        String testUrl = WEIBO_PROFILE_URI+"?"+"uid="+uid;
        System.out.println(testUrl);

        OkHttpClient client = new OkHttpClient();

        Request request = new Request.Builder()
                .url(testUrl)
                .build();

        Response response = client.newCall(request).execute();
        String respon = Objects.requireNonNull(response.body()).string();
        System.out.println(respon);

    }

}

发送post请求

官方例子：https://raw.githubusercontent.com/square/okhttp/master/samples/guide/src/main/java/okhttp3/guide/PostExample.java

 @Test(dataProviderClass = CityDataProvider.class, dataProvider = "getdata")
    public void testTerminalNum(String json, String sql) throws IOException, SQLException, ClassNotFoundException {
        System.out.println("请求参数：" + json);
        System.out.println("查询sql：" + sql);
        //拼接网络请求
        String testUrl = url + "/sample/getSample";
        System.out.println("请求地址："+testUrl);

            RequestBody body = RequestBody.create(json, JSON);
            Request request = new Request.Builder()
                    .url(testUrl)
                    .post(body)
                    .addHeader("Content-Typ", "application/json;charset=UTF-8")
                    .build();

            Response response = client.newCall(request).execute();

            String result = response.body().toString();
            System.out.println("接口返回值" + result);

            JsonParser parser = new JsonParser();
            JsonElement element = parser.parse(result);
            JsonObject root = element.getAsJsonObject(); //获得根节点元素

            int status = root.get("msg").getAsInt();
            //判断status值为 1
            Assert.assertEquals(status, 1）
            }