Fuel地址

• 優點：簡單方便，擴展多
• 缺點：中文文檔少，使用要在Android版本5及以上（sdk 19+）（不知道以后會不會有改進，現在是這樣）

用法

• 添加依賴

//Fuel
    //Android使用
    implementation 'com.github.kittinunf.fuel:fuel-android:1.16.0'
    //Gson解析
    implementation 'com.github.kittinunf.fuel:fuel-gson:1.16.0'

GET網絡請求用法(有三種寫法，我就列出一條)

//get，返回String
Fuel.get("https://httpbin.org/get").responseString { request, response, result ->
    //返回參數
    result.fold({ d ->
        //返回成功，處理數據
    }, { err ->
        //請求失敗，執行錯誤處理
    })
}

有時候我們返回的時候希望直接轉化成實體類

• 要轉化的實體類

package com.em.testfuel

data class User(val name: String, val age: Int) {
}

• 請求

Fuel.get(url).responseObject<User> { request, response, result ->
            result.fold({
                Log.e("test",it.name)
            },{
                Log.e("test", it.message)
            })
        }

有時候我們需要這樣寫

data class User(val name: String, val age: Int) {
    class Deserializer : ResponseDeserializable<User> {
        override fun deserialize(content: String): User? {
            return Gson().fromJson(content, User::class.javaObjectType)
        }
    }
}

 Fuel.get(url).responseObject(User.Deserializer()) { request, response, result ->
            result.fold({
                Log.e("test",it.name)
            },{
                Log.e("test", it.message)
            })
        }

POST網絡請求

舉兩個例子：

• body是form-data

 val url2 = "http://192.168.0.101:8888/saveuser"

        Fuel.post(url2, listOf("name" to "李四","age" to 18)).responseObject<User> { request, response, result ->
            result.fold({
                Log.e("test",it.name)
            },{
                Log.e("test", it.message)
            })
        }

• body是raw

        val url3 = "http://192.168.0.101:8889/name"

        val requestBean = User("王五", 22)
        val requestData = Gson().toJson(requestBean)
        val type = mutableMapOf<String, String>()
        type["Content-Type"] = "application/json"

        Fuel.post(url3)
            .body(requestData)
            .header(type)
            .responseString { _, _, result ->
                result.fold({
                    Log.e("test", it)
                }, {
                    Log.e("test", it.message)
                })
            }

更多示例請參考文檔：Fuel文檔