feat: okhttp 使用示例

Author: dunwu

codes/javatech/javatech-lib/src/test/java/io/github/dunwu/javatech/http/OkHttpTests.java

@@ -0,0 +1,63 @@
+package io.github.dunwu.javatech.http;
+
+import lombok.extern.slf4j.Slf4j;
+import okhttp3.*;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+
+/**
+ * okhttp API 测试
+ *
+ * @author Zhang Peng
+ * @date 2022-06-09
+ */
+@Slf4j
+public class OkHttpTests {
+
+    OkHttpClient client = new OkHttpClient();
+
+    @Test
+    @DisplayName("OkHttp 同步 Get 请求")
+    public void testSyncGet() throws IOException {
+        String ip = "127.0.0.1";
+        String url = "http://realip.cc/?ip=" + ip;
+        Request request = new Request.Builder().url(url).build();
+
+        try (Response response = client.newCall(request).execute()) {
+            String json = response.body().string();
+            System.out.println("请求结果：" + json);
+        }
+    }
+
+    @Test
+    @DisplayName("OkHttp 异步 Get 请求")
+    public void testAsyncGet() {
+        String ip = "127.0.0.1";
+        String url = "http://realip.cc/?ip=" + ip;
+        Request request = new Request.Builder().url(url).build();
+
+        client.newCall(request).enqueue(new Callback() {
+            @Override
+            public void onFailure(Call call, IOException e) {
+                e.printStackTrace();
+            }
+
+            @Override
+            public void onResponse(Call call, Response response) throws IOException {
+                if (!response.isSuccessful())
+                    throw new IOException("Unexpected code " + response);
+
+                Headers responseHeaders = response.headers();
+                for (int i = 0, size = responseHeaders.size(); i < size; i++) {
+                    System.out.println(responseHeaders.name(i) + ": " + responseHeaders.value(i));
+                }
+
+                String json = response.body().string();
+                System.out.println("请求结果：" + json);
+            }
+        });
+    }
+
+}