java.net.ConnectException: failed to connect to /127.0.1.1 (port 8080)的解決辦法

當(dāng)你啟動(dòng)Tomcat后，在瀏覽器中輸入http：//127.0.1.1:8080/xxx.xx，你會(huì)發(fā)現(xiàn)你可以找打你要找的東西。但是當(dāng)你在Eclipse中運(yùn)行測(cè)試代碼后，JUnit會(huì)一直報(bào)出這樣的錯(cuò)誤：

java.net.ConnectException: failed to connect to /127.0.1.1 (port 8080) after 5000ms: isConnected failed: ECONNREFUSED (Connection refused)
at libcore.io.IoBridge.isConnected(IoBridge.java:223)
at libcore.io.IoBridge.connectErrno(IoBridge.java:161)
at libcore.io.IoBridge.connect(IoBridge.java:112)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
at java.net.Socket.connect(Socket.java:843)
at com.android.okhttp.internal.Platform.connectSocket(Platform.java:131)
at com.android.okhttp.Connection.connect(Connection.java:101)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:294)
at com.android.okhttp.internal.http.HttpEngine.sendSocketRequest(HttpEngine.java:255)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:206)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:345)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:296)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:179)

此時(shí)，你的第一反應(yīng)可能是某出代碼有問(wèn)題或者是清單文件中某個(gè)權(quán)限忘加了，其實(shí)不是這樣的。原來(lái)模擬器默認(rèn)把127.0.0.1和localhost當(dāng)做本身了，在模擬器上可以用10.0.2.2代替127.0.0.1和localhost，另外如果是在局域網(wǎng)環(huán)境可以用 192.168.0.x或者192.168.1.x(根據(jù)具體配置)連接本機(jī),這樣應(yīng)該就不會(huì)報(bào)錯(cuò)了。