OkHttp攜帶文件和普通參數進行post訪問 依賴

OkHttp攜帶文件和普通參數進行post訪問

依賴

<dependencies>
    <dependency>
        <groupId>com.squareup.okhttp3</groupId>
        <artifactId>okhttp</artifactId>
        <version>3.9.1</version>
    </dependency>
    <dependency>
        <groupId>com.squareup.okio</groupId>
        <artifactId>okio</artifactId>
        <version>1.14.0</version>
    </dependency>
</dependencies>

函數

import okhttp3.*;

import java.io.File;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

public class HttpUtils {

    public static String post(String url, Map<String, String> params, File file) {
        Response response = null;
        OkHttpClient okHttpClient = new OkHttpClient();

        MultipartBody.Builder builder = new MultipartBody.Builder();

        Set<Entry<String, String>> entrySet = params.entrySet();

        for (Entry<String, String> entry : entrySet) {
            builder.addFormDataPart(entry.getKey(), entry.getValue());
        }

        if (file != null) {
            builder.addFormDataPart("file", file.getName(), RequestBody.create(MediaType.parse("application/octet-stream"), file));
        }

        RequestBody requestBodyPost = builder.build();
        Request request = new Request.Builder().post(requestBodyPost).url(url).build();
        Call call = okHttpClient.newCall(request);

        try {
            response = call.execute();

            return response.body().string();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}