java - java 中的 HTTPS 文件下载

Question

我需要验证浏览器上出现的word文件的内容。所以我下载了doc文件。我的下载代码如下:

 private String downloader(WebElement element, String attribute) throws IOException, NullPointerException, URISyntaxException {         
        localDownloadPath = "c:\\downloads";
 fileToDownloadLocation = "https://xyz.abc.com/link1/docs/"+element.getAttribute(attribute);

        if (fileToDownloadLocation.trim().equals("")) throw new NullPointerException("The element you have specified does not link to anything!");
        fileToDownloadLocation = fileToDownloadLocation.replaceAll(" ","%20");       

        URL fileToDownload = new URL(fileToDownloadLocation);            
        HttpClient client = HttpClientBuilder.create().build();
         HttpsURLConnection con = (HttpsURLConnection)fileToDownload.openConnection();
        System.out.println(con);
        //for cookies management 
//        BasicHttpContext localContext = new BasicHttpContext();   
        HttpClientContext localContext = HttpClientContext.create();
        LOG.info("Mimic WebDriver cookie state: " + this.mimicWebDriverCookieState);
        if (this.mimicWebDriverCookieState) {
            localContext.setAttribute(ClientContext.COOKIE_STORE, mimicCookieState(this.driver.manage().getCookies()));
        } 

        //core downloading part
        HttpGet request = new HttpGet(fileToDownload.toURI()); 
        LOG.info("Sending GET request for: " + request.getURI());
        HttpResponse response = client.execute(request, localContext);
        this.httpStatusOfLastDownloadAttempt = response.getStatusLine().getStatusCode();
        LOG.info("HTTP GET request status: " + this.httpStatusOfLastDownloadAttempt);
        File downloadedFile = new File(this.localDownloadPath + fileToDownload.getFile().replaceFirst("/|\\\\", ""));        
        if (downloadedFile.canWrite() == false) downloadedFile.setWritable(true);
        LOG.info("Downloading file: " + downloadedFile.getName());
        FileUtils.copyInputStreamToFile(response.getEntity().getContent(), downloadedFile);
        response.getEntity().getContent().close();

        String downloadedFileAbsolutePath = downloadedFile.getAbsolutePath();
        LOG.info("File downloaded to '" + downloadedFileAbsolutePath + "'");

        return downloadedFileAbsolutePath;
    }

它适用于 http 站点。它甚至适用于一个 https 站点。但是当我尝试其他 https 站点时，出现如下错误:

javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
    at sun.security.ssl.InputRecord.handleUnknownRecord(Unknown Source)
    at sun.security.ssl.InputRecord.read(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:535)
    at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:403)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:177)
    at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:304)
    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:611)
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:446)
    at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
    at com.iso.mozart.test.ui.FileDownloader.downloader(FileDownloader.java:166)
    at com.iso.mozart.test.ui.FileDownloader.downloadFile(FileDownloader.java:59)
    at com.iso.mozart.test.pageobjects.SearchResultsPage.downloadAFile(SearchResultsPage.java:293)
    at com.iso.mozart.test.pageobjects.SearchResultsPage.searchByKeywords(SearchResultsPage.java:142)
    at com.iso.mozart.test.ui.MozartUITest.testMozart(MozartUITest.java:57)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:82)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:240)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:180)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

org.openqa.selenium.WebDriverException: Error communicating with the remote browser. It may have died.
Build info: version: '2.45.0', revision: '5017cb8', time: '2015-02-26 23:59:50'
System info: host: 'QAWIN7VMP04', ip: '10.16.96.19', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.7.0_40'
Driver info: driver.version: EventFiringWebDriver
Command duration or timeout: 9.17 seconds
Build info: version: '2.45.0', revision: '5017cb8e7ca8e37638dc3091b2440b90a1d8686f', time: '2015-02-27 09:10:26'
System info: host: 'enparajuli', ip: '192.168.79.35', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_05'
Driver info: org.openqa.selenium.remote.RemoteWebDriver
Capabilities [{nativeEvents=true, webdriver.remote.sessionid=4c85c8d0-e184-44d9-aba1-e439c4d50b78, browserName=internet explorer, takesScreenshot=true, javascriptEnabled=true, handlesAlerts=true, version=-1, cssSelectorsEnabled=true, platform=WINDOWS}]
Session ID: 4c85c8d0-e184-44d9-aba1-e439c4d50b78
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:204)
    at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:156)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:599)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:622)
    at org.openqa.selenium.remote.RemoteWebDriver.quit(RemoteWebDriver.java:468)
    at com.iso.mozart.test.ui.common.driver.BrowserDriver.stop(BrowserDriver.java:666)
    at com.iso.mozart.test.navigator.impl.MozartNavigatorImpl.stop(MozartNavigatorImpl.java:67)
    at com.iso.mozart.test.ui.BaseTestCase.stop(BaseTestCase.java:83)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:37)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:82)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:240)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:180)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.openqa.selenium.remote.UnreachableBrowserException: Error communicating with the remote browser. It may have died.
Build info: version: '2.45.0', revision: '5017cb8', time: '2015-02-26 23:59:50'
System info: host: 'QAWIN7VMP04', ip: '10.16.96.19', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.7.0_40'
Driver info: driver.version: EventFiringWebDriver
Build info: version: '2.45.0', revision: '5017cb8e7ca8e37638dc3091b2440b90a1d8686f', time: '2015-02-27 09:10:26'
System info: host: 'enparajuli', ip: '192.168.79.35', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_05'
Driver info: driver.version: unknown

我不知道我做错了什么。有人可以帮忙吗？热烈欢迎任何形式的帮助。

Answer 1

Java 7 引入了默认启用的 SNI 支持。某些配置错误的服务器会在 SSL 握手中发送“无法识别的名称”警告，大多数客户端都会忽略该警告，Java 除外。

尝试将 -Djsse.enableSNIExtension=false 添加到 Java 命令参数中，看看是否有帮助。

From here

在下载器方法中，添加 System.setProperty("jsse.enableSNIExtension", "false") 看看是否有帮助。