我有一个OKHTTP客户机,它使用我的自定义网络拦截器将令牌插入请求头中。

我不断地得到例外

E/AndroidRuntime: FATAL EXCEPTION: OkHttp Dispatcher

Process: com.edstart.tazuzu, PID: 32093

java.lang.NullPointerException: interceptor com.edstart.tazuzu.RestAPI.RequestsErrorInterceptor@2bde70f returned null

at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:157)

at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)

at com.edstart.tazuzu.RestAPI.TazuzuRequestsInterceptor.intercept(TazuzuRequestsInterceptor.kt:30)

at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)

at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)

at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)

at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)

at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)

at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)

at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)

at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)

at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)

at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126)

at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)

at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)

at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:254)

at okhttp3.RealCall$AsyncCall.execute(RealCall.java:200)

at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)

at java.lang.Thread.run(Thread.java:764)

我试过用Try/Catch包围拦截器。同时也抛出错误,以避免应用程序崩溃,但没有很好的效果。

拦截器代码:

package com.edstart.tazuzu.RestAPI

import android.util.Log

import com.edstart.tazuzu.Managers.ServerManager

import okhttp3.Interceptor

import okhttp3.Response

import java.net.InetAddress

import kotlin.Exception

/**

* interceptor for the tazuzu api requests to insert the token before the request

* send to the server (for authentication)

*/

class TazuzuRequestsInterceptor : Interceptor {

override fun intercept(chain: Interceptor.Chain?): Response? {

try {

if (!isInternetAvailable()) {

throw Exception()

} else {

var request = chain?.request()

if (request != null) {

val builder = request.newBuilder()

if (builder != null) {

builder.addHeader("x-access-token", ServerManager.token)

request = builder.build()

if (request != null && chain != null) {

return chain.proceed(request)

}

}

}

}

} catch (e: java.lang.Exception) {

Log.e("###", e.toString())

throw e

}

return null

}

private fun isInternetAvailable(): Boolean {

return try {

val ipAddr = InetAddress.getByName("google.com")

//You can replace it with your name

!ipAddr.equals("")

} catch (e: Exception) {

false

}

}

请帮忙,寻找控制异常的方法,以避免应用程序崩溃。