Fuel:Kotlin / Android最简单的HTTP网络库

Fuel地址

  • 优点:简单方便,扩展多
  • 缺点:中文文档少,使用要在Android版本5及以上(sdk 19+)(不知道以后会不会有改进,现在是这样)

用法

  • 添加依赖
//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网络请求用法(有三种写法,我就列出一条)

//get,返回String
Fuel.get("https://httpbin.org/get").responseString { request, response, result ->
    //返回参数
    result.fold({ d ->
        //返回成功,处理数据
    }, { err ->
        //请求失败,执行错误处理
    })
}

有时候我们返回的时候希望直接转化成实体类

  • 要转化的实体类
package com.em.testfuel

data class User(val name: String, val age: Int) {
}
  • 请求
Fuel.get(url).responseObject { request, response, result ->
            result.fold({
                Log.e("test",it.name)
            },{
                Log.e("test", it.message)
            })
        }

有时候我们需要这样写

data class User(val name: String, val age: Int) {
    class Deserializer : ResponseDeserializable {
        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网络请求

举两个例子:

  • 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 { 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()
        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)
                })
            }

更多示例请参考文档:Fuel文档

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