public void setUp() throws Exception {
                DesiredCapabilities capabilities = new DesiredCapabilities();
                capabilities.setCapability("appium-version", "1.4");
                capabilities.setCapability("platformName", "iOS");
                capabilities.setCapability("platformVersion", "8.1");
                capabilities.setCapability("deviceName", "iPhone Simulator");
                capabilities.setCapability("autoAcceptAlerts", true);
                driver = new IOSDriver(new URL("http://0.0.0.0:4723/wd/hub"), capabilities);
        }

        @After
        public void tearDown() throws Exception {
                driver.quit();
        }

        @Test
        public void test_0001() throws Exception {
                Thread.sleep(30);
                MobileElement textviewElement = (MobileElement) driver.findElementByName("上海");
                Point mPoint = textviewElement.getLocation();
                System.out.println(mPoint);
              //textviewElement.click();   //使用click方法会报错，错误信息如下，使用下面的tap可以正常操作
                driver.tap(1, mPoint.getX(), mPoint.getY(), 300);
                Thread.sleep(5000);
        }

错误日志：
org.openqa.selenium.WebDriverException: An unknown server-side error occurred while processing the command. (Original error: connect ECONNREFUSED) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 1.76 seconds
Build info: version: '2.44.0', revision: '76d78cf', time: '2014-10-23 20:02:37'
System info: host: 'localhost', ip: '127.0.0.1', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.10', java.version: '1.8.0_05'
Driver info: io.appium.java_client.ios.IOSDriver
Capabilities [{networkConnectionEnabled=false, warnings={}, databaseEnabled=false, deviceName=iPhone Simulator, platform=MAC, desired={appium-version=1.4, platformVersion=8.1, platformName=iOS, deviceName=iPhone Simulator, autoAcceptAlerts=true}, appium-version=1.4, platformVersion=8.1, webStorageEnabled=false, locationContextEnabled=false, browserName=iOS, takesScreenshot=true, javascriptEnabled=true, platformName=iOS, autoAcceptAlerts=true}]
Session ID: 1da65c8a-7881-4782-bad9-34e21a29cc92
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
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 io.appium.java_client.AppiumDriver.execute(AppiumDriver.java:180)
at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:268)
at org.openqa.selenium.remote.RemoteWebElement.click(RemoteWebElement.java:79)
at com.iostest.demo.domo1.test_0003(domo1.java:64)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
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:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

问题已解决，原因是窗口化运行 appium 的时候进行了 app 和设备之类的设置，与 setup 的初始化冲突引起的，后台 appium 服务，解决问题