首先,引入包
/* OkHttp请求框架*/
implementation 'com.squareup.okhttp3:okhttp:3.10.0'
1.接口封装,我只写了post的json请求,post的表单请求,get请求
public class HttpUtil {
/**
* post请求
* @param s,接口
* @param json
*/
public static Call getCall(String s, String json) {
OkHttpClient okHttpClient = new OkHttpClient.Builder()
.connectTimeout(10, TimeUnit.SECONDS)
.writeTimeout(10, TimeUnit.SECONDS)
.readTimeout(20, TimeUnit.SECONDS)
.build();
//MediaType 设置Content-Type 标头中包含的媒体类型值
RequestBody requestBody = FormBody.create(MediaType.parse("application/json;charset=utf-8"), json);
Request request = new Request.Builder()
.url(BASE_URL + s)//我的BASE_URL是“https://www.wdlsq.cn/office”,拼接成完整的请求url
.post(requestBody)
.build();
Call call = okHttpClient.newCall(request);
return call;
}
/**
* get请求
*
* @param urlAddres,完整路径
* @param callback
*/
//最终的请求结果将回调在callback 中
public static void sendOkhttpRequest(final String urlAddres, final okhttp3.Callback callback) {
new Thread(new Runnable() {
@Override
public void run() {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url(urlAddres).build();
client.newCall(request).enqueue(callback);
}
}).start();
}
/**
* post请求键值对,表单
*/
public static Call postFromParameters(final String urlAddres, final String json) {
OkHttpClient client = new OkHttpClient.Builder()
.connectTimeout(10, TimeUnit.SECONDS)
.writeTimeout(10, TimeUnit.SECONDS)
.readTimeout(20, TimeUnit.SECONDS)
.build();
FormBody.create(MediaType.parse("application/json;charset=utf-8"), json);
String[] jsonList = json.substring(1, json.length() - 1).split(",");
HashMap<String, String> paramsMap = new HashMap<>();
for (int i = 0; i < jsonList.length; i++) {
String[] form = jsonList[i].split(":");
paramsMap.put(form[0].substring(1, form[0].length() - 1), form[1].substring(1, form[1].length() - 1)); //把参数传进Map中
}
FormBody.Builder builder = new FormBody.Builder();
for (String key : paramsMap.keySet()) { //追加表单信息
builder.add(key, paramsMap.get(key));
}
RequestBody requestBody = builder.build();//参数
Request request = new Request.Builder() //发送请求
.url(BASE_URL + urlAddres)//请求web端的url
.post(requestBody)
.build();
Call call = client.newCall(request);//返回响应
return call;
}
}
2.各种请求的使用
(1)get请求
//requestUrl为拼接好的完整请求路径
HttpUtil.sendOkhttpRequest(requestUrl, new Callback() {
@Override
public void onFailure(Call call, IOException e) {
//请求失败
}
@Override
public void onResponse(Call call, Response response) throws IOException {
//请求成功
String result = response.body().string();// response.body().string()只能取一次值
}
});
(2)post请求-------json
Gson gson = new Gson();//使用Gson,添加依赖compile 'com.google.code.gson:gson:2.8.1'
String json = gson.toJson( user );//使用Gson将对象转换为json字符串
//加入队列,enqueue异步操作
HttpUtil.getCall( ServletUrl.USER_REG, json ).enqueue( new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, final Response response) throws IOException {
}
} );
(3)post请求-------表单,类似于json,数据封装成
{"app":"weather.future","weaid":1,"appkey":"10003","sign":"b59bc3ef6191eb9f747dd4e83c99f2a4","format":"json"}
在postFromParameters中,会解析成(key,value)形式