Kotlin_使用Retrofit和RxJava进行简单的网络请求与Gaon数据解析

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原创最新推荐文章于 2026-05-22 15:03:06 发布 1.4k 阅读 AI 写同款· GEO 优化 ›

《Kotlin系列》之协程搭配Retrofit+OkHttp3网络请求封装(kotlin+retrofit+okhttp3) 上一篇关于MVVM架构的基类封装，这篇会在MVVM的基础上示范使用kotlin+retrofit+okhttp封装的网络框架，里面会涉及到协程的使用，协程异常处理包装。阅读详情

不废话直接上代码

在环境支持Kotlin的基础上添加如下依赖

    compile 'com.squareup.retrofit2:retrofit:2.1.0'
    compile 'com.squareup.retrofit2:adapter-rxjava:2.1.0'
    compile 'com.squareup.retrofit2:converter-gson:2.1.0'
    compile 'com.squareup.okhttp3:okhttp:3.2.0'
    compile 'com.squareup.okhttp3:logging-interceptor:3.2.0'

1.将请求返回的json转为bean类

(目前AS的Gson插件无法转译为kotlin的bean类,于是先生成javabean,再用AS一键转为Kotlin)

转换方法:

转kotlin后得到的Bean类:

package com.demo.kotlin.kotlindemo

/**
 * Created by Administrator on 2018/5/11 0011.
 */

class CaseListBean {

    /**
     * code : 100
     * msg : 查询成功
     * data : {"count":3,"data":[{"case_id":35,"case_name":"测试案件2","addtime":"1514526115","status":7},{"case_id":31,"case_name":"测试案件","addtime":"1513936149","status":6},{"case_id":2,"case_name":"天安门房子案","addtime":"1514610028","status":6}]}
     */

    var code: Int = 0
    var msg: String? = null
    var data: DataBeanX? = null

    class DataBeanX {
        /**
         * count : 3
         * data : [{"case_id":35,"case_name":"测试案件2","addtime":"1514526115","status":7},{"case_id":31,"case_name":"测试案件","addtime":"1513936149","status":6},{"case_id":2,"case_name":"天安门房子案","addtime":"1514610028","status":6}]
         */

        var count: Int = 0
        var data: List<DataBean>? = null

        class DataBean {
            /**
             * case_id : 35
             * case_name : 测试案件2
             * addtime : 1514526115
             * status : 7
             */

            var case_id: Int = 0
            var case_name: String? = null
            var addtime: String? = null
            var status: Int = 0
        }
    }
}

2.定义接口类 APIService

主要定义接口的请求类型,详细的请求地址,和所需的参数

interface APIService{
    //post,加在统一接口后面的详细接口
    @POST("Caseapi/caseList")
    //采用map的形式传参
    fun getIpMsgByMap(@QueryMap map: Map<String, Int>): Call<CaseListBean>

    @POST("Caseapi/caseList")
            //采用固定键值对的形式传参
    fun getIpMsgByParams(@Query ("user_id")user_id:Int,@Query ("userrole")userrole:Int,@Query ("company_id")company_id:Int): Call<CaseListBean>
}

3.在Application定义Retrofit对象并return该对象创建的service

 val retrofit: Retrofit =  Retrofit.Builder()
                .baseUrl("https://test.xj.wangshangfayuan.com/api/")
                .addConverterFactory(GsonConverterFactory.create())
                .build()
 val ipService = retrofit.create(APIService::class.java)

4.通过Application拿到service请求网络

方式一:(map传参)

 var map = HashMap<String, Int>()
        map.put("userrole", 1)
        map.put("user_id",55)
        map.put("company_id",5)

        val retrofit: Retrofit =  Retrofit.Builder()
                .baseUrl("https://demo.wangshangfayuan.com/api/")
                .addConverterFactory(GsonConverterFactory.create())
                .build()
        val ipService = retrofit.create(APIService::class.java)


        ipService.getIpMsgByMap(map).enqueue(object: Callback<CaseListBean> {
            override fun onResponse(call: Call<CaseListBean>?, response: Response<CaseListBean>?) {
                println(response!!.body().data!!.data!!.get(0).case_name)

            }

            override fun onFailure(call: Call<CaseListBean>?, t: Throwable?) {
                println("error")
            }

        })

方式二:固定参数传参

  ipService.getIpMsgByParams(1,28,5).enqueue(object: Callback<CaseListBean> {
            override fun onResponse(call: Call<CaseListBean>?, response: Response<CaseListBean>?) {
                println(response!!.body().data!!.count)

            }

            override fun onFailure(call: Call<CaseListBean>?, t: Throwable?) {
                println("error")
            }

        })

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