问题
When i try to connect my api running on my localhost with OkHttpClient in java. But it throws that error:
java.net.ConnectException: failed to connect to localhost/127.0.0.1 (port 44338) from /127.0.0.1 (port 35986) after 10000ms: isConnected failed: ECONNREFUSED (Connection refused)
I tried to replace "localhost" with my default gateway:192.168.1.1 but still not working.
The code I do request:
OkHttpClient client = new OkHttpClient();
RequestBody formBody = new FormBody.Builder()
.add("Username", "***")
.add("Password", "****")
.build();
Request request = new Request.Builder()
.url("https://localhost:44338/api/authorize/login")
.addHeader("Content-Type","application/json")
.post(formBody)
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(@NotNull Call call, @NotNull IOException e) {
System.out.println("y" + e.getMessage());
e.printStackTrace();
}
@Override
public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
System.out.println("ccc :" + response.body().string());
}
});
回答1:
It could be because of the url you are setting, you are using localhost instead of the local ipaddress, try it like this
HttpUrl localUrl = HttpUrl.parse("http://YourlocalIPV4Address:44338/api/authorize/login")
Request request = new Request.Builder()
.url(localUrl)
.addHeader("Content-Type","application/json")
.post(formBody)
.build();
Let me know it it works for you!
回答2:
localhost refers to the device where the app is running, not your development desktop. The emulator acts as a separate device. Unless you are running a web server on your phone, this will not work. You need to use the IP address for your desktop to make a request to the service that is running there. In Windows, you can run ipconfig to find your IP address on your local network.
来源：https://stackoverflow.com/questions/60459255/java-okhttpclient-can-not-connect-to-localhost