用java写一个OkHttp请求工具类
时间: 2024-05-01 14:21:48 浏览: 29
好的,下面是一个简单的用Java实现的OkHttp请求工具类。
```java
import okhttp3.*;
import java.io.IOException;
import java.util.Map;
public class OkHttpUtil {
private static OkHttpClient client = new OkHttpClient();
/**
* 同步GET请求
* @param url 请求的URL
* @param headers 请求头
* @return 响应结果
* @throws IOException
*/
public static String get(String url, Map<String, String> headers) throws IOException {
Request.Builder builder = new Request.Builder().url(url);
if (headers != null) {
for (Map.Entry<String, String> entry : headers.entrySet()) {
builder.addHeader(entry.getKey(), entry.getValue());
}
}
Request request = builder.build();
Response response = client.newCall(request).execute();
if (response.isSuccessful()) {
return response.body().string();
} else {
throw new IOException("Unexpected code " + response);
}
}
/**
* 异步GET请求
* @param url 请求的URL
* @param headers 请求头
* @param callback 响应回调
*/
public static void getAsync(String url, Map<String, String> headers, Callback callback) {
Request.Builder builder = new Request.Builder().url(url);
if (headers != null) {
for (Map.Entry<String, String> entry : headers.entrySet()) {
builder.addHeader(entry.getKey(), entry.getValue());
}
}
Request request = builder.build();
client.newCall(request).enqueue(callback);
}
/**
* 同步POST请求
* @param url 请求的URL
* @param headers 请求头
* @param requestBody 请求体
* @return 响应结果
* @throws IOException
*/
public static String post(String url, Map<String, String> headers, RequestBody requestBody) throws IOException {
Request.Builder builder = new Request.Builder().url(url);
if (headers != null) {
for (Map.Entry<String, String> entry : headers.entrySet()) {
builder.addHeader(entry.getKey(), entry.getValue());
}
}
Request request = builder.post(requestBody).build();
Response response = client.newCall(request).execute();
if (response.isSuccessful()) {
return response.body().string();
} else {
throw new IOException("Unexpected code " + response);
}
}
/**
* 异步POST请求
* @param url 请求的URL
* @param headers 请求头
* @param requestBody 请求体
* @param callback 响应回调
*/
public static void postAsync(String url, Map<String, String> headers, RequestBody requestBody, Callback callback) {
Request.Builder builder = new Request.Builder().url(url);
if (headers != null) {
for (Map.Entry<String, String> entry : headers.entrySet()) {
builder.addHeader(entry.getKey(), entry.getValue());
}
}
Request request = builder.post(requestBody).build();
client.newCall(request).enqueue(callback);
}
}
```
这里提供了四个方法分别可以同步和异步发送GET和POST请求,其中GET请求不需要请求体,而POST请求需要传入RequestBody对象。可以根据需要进行使用。