公司项目中涉及到国外的业务，所以每次都需要翻译文案，而且平时看源代码，里面的文档也全都是英文的，频繁的打开浏览器来翻译，着实是非常的麻烦。
还好，IDEA提供了谷歌翻译的插件（Translation），很好用，跟在浏览器上打开翻译网站翻译的效果一样：
直接安装了一个，但是当我使用的时候却一直提示网络异常，错误信息如下：
>Plugin v2.3.2
>IntelliJ IDEA 2019.1
>Build #IU-191.6183.87, built on March 27, 2019
>JRE: 1.8.0_202-release-1483-b39 x86_64
>JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
>OS: macOS 10.14.4
```
cn.yiiguxing.plugin.translate.trans.TranslateException: Google Translate > 网络异常
at cn.yiiguxing.plugin.translate.trans.AbstractTranslator.translate(AbstractTranslator.kt:49)
at cn.yiiguxing.plugin.translate.trans.TranslateService$translate$inlined$executeOnPooledThread$1.run(Applications.kt:169)
at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:311)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.SocketException: Connection refused (Connection refused)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:435)
at java.net.Socket.connect(Socket.java:589)
at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1199)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1564)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:347)
at com.intellij.util.io.HttpRequests.openConnection(HttpRequests.java:615)
at com.intellij.util.io.HttpRequests.access$300(HttpRequests.java:59)
at com.intellij.util.io.HttpRequests$RequestImpl.getConnection(HttpRequests.java:383)
at com.intellij.util.io.HttpRequests$RequestImpl.getInputStream(HttpRequests.java:392)
at com.intellij.util.io.HttpRequests$RequestImpl.readString(HttpRequests.java:447)
at cn.yiiguxing.plugin.translate.trans.AbstractTranslator$translate$2.process(AbstractTranslator.kt:45)
at cn.yiiguxing.plugin.translate.trans.AbstractTranslator$translate$2.process(AbstractTranslator.kt:16)
at com.intellij.util.io.HttpRequests.doProcess(HttpRequests.java:528)
at com.intellij.util.io.HttpRequests.process(HttpRequests.java:504)
at com.intellij.util.io.HttpRequests.access$100(HttpRequests.java:59)
at com.intellij.util.io.HttpRequests$RequestBuilderImpl.connect(HttpRequests.java:357)
at cn.yiiguxing.plugin.translate.trans.AbstractTranslator.translate(AbstractTranslator.kt:44)
... 7 more
```第一反应是本机是不是断网了，查看之后发现网络并没有问题，可以访问谷歌翻译的网站，而且访问数据库之类的也都是正常的。
紧接着又怀疑是不是因为没翻墙的缘故，因为之前访问谷歌翻译都是使用的http://translate.google.cn，而不是使用的.com，可是检查了之后发现也没问题，不管是.cn还是.com，本机都是可以访问的。
无奈之下重启IDEA，竟然还是不行，打开之后依旧说网络异常，真的是让我非常生气，甚至都想要卸载这个破插件了。
抱着最后一丝希望，憋了个大招：重启电脑，没想到问题竟然解决了，重启之后再次打开IDEA就正常了，就算我将VPN关了也依旧还是可以使用插件进行翻译。
什么也没做，问题就这么好了，莫名其妙，真的是奇了个怪！！！
2019.7.11日更新：
上次碰见翻译插件异常的问题，虽然没找到直接的原因，但是重启机器之后莫名其妙好了，今天竟然又不行了。。。
>Plugin v2.3.2
>IntelliJ IDEA 2019.1.3
>Build #IU-191.7479.19, built on May 28, 2019
>JRE: 1.8.0_202-release-1483-b58 x86_64
>JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
>OS: macOS 10.14.5
```
cn.yiiguxing.plugin.translate.trans.TranslateException: Google Translate > 翻译失败: 未知错误
at cn.yiiguxing.plugin.translate.trans.AbstractTranslator.translate(AbstractTranslator.kt:49)
at cn.yiiguxing.plugin.translate.trans.TranslateService$translate$inlined$executeOnPooledThread$1.run(Applications.kt:169)
at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:311)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:994)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1367)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1395)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1379)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1564)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:347)
at com.intellij.util.io.HttpRequests.openConnection(HttpRequests.java:615)
at com.intellij.util.io.HttpRequests.access$300(HttpRequests.java:59)
at com.intellij.util.io.HttpRequests$RequestImpl.getConnection(HttpRequests.java:383)
at com.intellij.util.io.HttpRequests$RequestImpl.getInputStream(HttpRequests.java:392)
at com.intellij.util.io.HttpRequests$RequestImpl.readString(HttpRequests.java:447)
at cn.yiiguxing.plugin.translate.trans.AbstractTranslator$translate$2.process(AbstractTranslator.kt:45)
at cn.yiiguxing.plugin.translate.trans.AbstractTranslator$translate$2.process(AbstractTranslator.kt:16)
at com.intellij.util.io.HttpRequests.doProcess(HttpRequests.java:528)
at com.intellij.util.io.HttpRequests.process(HttpRequests.java:504)
at com.intellij.util.io.HttpRequests.access$100(HttpRequests.java:59)
at com.intellij.util.io.HttpRequests$RequestBuilderImpl.connect(HttpRequests.java:357)
at cn.yiiguxing.plugin.translate.trans.AbstractTranslator.translate(AbstractTranslator.kt:44)
... 7 more
Caused by: java.io.EOFException: SSL peer shut down incorrectly
at sun.security.ssl.InputRecord.read(InputRecord.java:505)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:975)
... 28 more
```对比两次错误信息，上次是连接被拒绝（Connection refused），这次是HTTP握手失败（Remote host closed connection during handshake），痛定思痛，将插件开发者提供的文档（http://yiiguxing.github.io/TranslationPlugin/start.html）阅读了一遍，发现人家早就已经总结过这类似的问题了，可惜之前眼瞎一直没看到。
FAQ：出现网络错误或者网络连接超时怎么办？
答：
检查网络环境，确保网络畅通；
检查是否是因为使用了代理软件而导致插件无法访问翻译API；
检查IDE代理配置，查看是否是因为IDE代理配置导致的问题；
如果使用的是谷歌翻译，检查谷歌翻译配置，查看是否勾选了`使用translate.google.com`选项，translate.google.com在国内是需要VPN才能访问的。另外，TTS功能使用的也是谷歌翻译的API；
瞬间反应过来，我之前用的代理过期了，但是idea里面的代理却没有移除，如下图：
将代理移除之后，本机使用正常！
最后再提一句，看看有没有人和我一样的疑惑：“我该如何将插件配置的谷歌翻译地址从com改为cn？”
没看文档之前（截止到今天），我也一直有这个疑问，但是百度谷歌找了一圈都没有答案，后来也就不了了之了，但是今天在看插件github上issue的时候，我发现作者已经解答过这个问题了（https://github.com/YiiGuxing/TranslationPlugin/issues/213）：
国内用户默认是translate.google.cn的，除非你设备的语言环境为非中文。
2019.7.22日更新：
今天又出现了翻译不了的问题，提示403，看起来像是被谷歌翻译给禁了IP一样，但是直接在浏览器上访问谷歌翻译是没问题的，而且还是非必现，偶尔才会出现，更神奇的是，错误就算出现了，也能翻译成功，希望插件作者会尽快搞定这个问题。
>Plugin v2.3.2
>IntelliJ IDEA 2019.1.3
>Build #IU-191.7479.19, built on May 28, 2019
>JRE: 1.8.0_202-release-1483-b58 x86_64
>JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
>OS: macOS 10.14.5
```
cn.yiiguxing.plugin.translate.trans.TranslateException: Google Translate > 翻译失败: 未知错误
at cn.yiiguxing.plugin.translate.trans.AbstractTranslator.translate(AbstractTranslator.kt:49)
at cn.yiiguxing.plugin.translate.trans.TranslateService$translate$inlined$executeOnPooledThread$1.run(Applications.kt:169)
at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:311)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: com.intellij.util.io.HttpRequests$HttpStatusException: Request failed with status code 403. Status=403, Url=https://translate.google.cn/translate_a/single?client=gtx&dt=t&dt=bd&dt=rm&dj=1&ie=UTF-8&oe=UTF-8&sl=auto&tl=en&hl=zh-CN&tk=361788.206317&q=fan%27yi
at com.intellij.util.io.HttpRequests.throwHttpStatusError(HttpRequests.java:649)
at com.intellij.util.io.HttpRequests.openConnection(HttpRequests.java:630)
at com.intellij.util.io.HttpRequests.access$300(HttpRequests.java:59)
at com.intellij.util.io.HttpRequests$RequestImpl.getConnection(HttpRequests.java:383)
at com.intellij.util.io.HttpRequests$RequestImpl.getInputStream(HttpRequests.java:392)
at com.intellij.util.io.HttpRequests$RequestImpl.readString(HttpRequests.java:447)
at cn.yiiguxing.plugin.translate.trans.AbstractTranslator$translate$2.process(AbstractTranslator.kt:45)
at cn.yiiguxing.plugin.translate.trans.AbstractTranslator$translate$2.process(AbstractTranslator.kt:16)
at com.intellij.util.io.HttpRequests.doProcess(HttpRequests.java:528)
at com.intellij.util.io.HttpRequests.process(HttpRequests.java:504)
at com.intellij.util.io.HttpRequests.access$100(HttpRequests.java:59)
at com.intellij.util.io.HttpRequests$RequestBuilderImpl.connect(HttpRequests.java:357)
at cn.yiiguxing.plugin.translate.trans.AbstractTranslator.translate(AbstractTranslator.kt:44)
... 7 more
```看完文章，有任何疑问，请加入群聊一起交流！！！
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