Java 如何在外部服务器上启动gwt项目，例如tomcat？

我在本地主机上部署了gwt项目，并在eclipse上部署了gwt插件。一切正常。但当我尝试在外部（从tomcat）启动应用程序时，它无法正常工作。我将war内容放入webaaps文件夹。gwt的客户端工作正常，但与服务器端的连接存在问题

日志中的可能错误：

127.0.0.1 - - [07/Mar/2014:17:31:36 +0400] "GET /BugGitGwt/ HTTP/1.1" 200 2954
127.0.0.1 - - [07/Mar/2014:17:31:36 +0400] "GET /BugGitGwt/buggitgwt/buggitgwt.nocache.js HTTP/1.1" 200 6004
127.0.0.1 - - [07/Mar/2014:17:31:36 +0400] "GET /BugGitGwt/loading4.gif HTTP/1.1" 200 2164
127.0.0.1 - - [07/Mar/2014:17:31:36 +0400] "GET /BugGitGwt/BugGitGwt.css HTTP/1.1" 200 708
127.0.0.1 - - [07/Mar/2014:17:31:36 +0400] "GET /BugGitGwt/buggitgwt/gwt/clean/clean.css HTTP/1.1" 200 29325
127.0.0.1 - - [07/Mar/2014:17:31:36 +0400] "GET /BugGitGwt/buggitgwt/0B29E478EEA6D0F7C8617BCA1D490240.cache.html HTTP/1.1" 200 161530
127.0.0.1 - - [07/Mar/2014:17:31:36 +0400] "POST /BugGitGwt/buggitgwt/greet HTTP/1.1" 500 2820
127.0.0.1 - - [07/Mar/2014:17:31:36 +0400] "POST /BugGitGwt/buggitgwt/greet HTTP/1.1" 500 2820
127.0.0.1 - - [07/Mar/2014:17:31:36 +0400] "POST /BugGitGwt/buggitgwt/greet HTTP/1.1" 500 2820
127.0.0.1 - - [07/Mar/2014:17:31:36 +0400] "GET /BugGitGwt/buggitgwt/gwt/clean/images/hborder.png HTTP/1.1" 200 1995
127.0.0.1 - - [07/Mar/2014:17:31:36 +0400] "GET /BugGitGwt/buggitgwt/gwt/clean/images/circles.png HTTP/1.1" 200 1492
127.0.0.1 - - [07/Mar/2014:17:31:36 +0400] "GET /BugGitGwt/buggitgwt/gwt/clean/images/vborder.png HTTP/1.1" 200 298

或者这个：

INFO: The APR based Apache Tomcat Native library which allows optimal performance in 
production environments was not found on the 
java.library.path: C:\Program Files (x86)\Java\jdk1.6.0_45\bin;
C:\Windows\Sun\Java\bin;
C:\Windows\system32;
C:\Windows;C:\Program Files (x86)\Intel\iCLS Client\;
C:\Program Files\Intel\iCLS Client\;
C:\Program Files (x86)\AMD APP\bin\x86_64;
C:\Program Files (x86)\AMD APP\bin\x86;C:\Windows\system32;
C:\Windows;C:\Windows\System32\Wbem;
C:\Windows\System32\WindowsPowerShell\v1.0\;
C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;
C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;
C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;
C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;
C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT; 
C:\Program Files (x86)\Java\jdk1.6.0_45\bin;
C:\apache-maven-3.1.1\bin;
C:\Program Files (x86)\MySQL\MySQL Utilities 1.3.6\;
C:\apache-ant-1.9.3\bin;
C:\Program Files (x86)\Java\jdk1.6.0_45\bin;
C:\Program Files (x86)\Git\bin; 
C:\Program Files (x86)\Git\cmd;;.

INFO: JSR 356 WebSocket (Java WebSocket 1.0) support is not available 
when running on Java 6. To suppress this message, run Tomcat on Java 7, 
remove the WebSocket JARs from $CATALINA_HOME/lib or add 
the WebSocketJARs to thetomcat.util.scan.DefaultJarScanner.jarsToSkip property in 
$CATALINA_BASE/conf/catalina.properties. Note that the deprecated Tomcat 7 
WebSocket API will be available. 

或者这个：

INFO: The APR based Apache Tomcat Native library which allows optimal performance in 
production environments was not found on the 
java.library.path: C:\Program Files (x86)\Java\jdk1.6.0_45\bin;
C:\Windows\Sun\Java\bin;
C:\Windows\system32;
C:\Windows;C:\Program Files (x86)\Intel\iCLS Client\;
C:\Program Files\Intel\iCLS Client\;
C:\Program Files (x86)\AMD APP\bin\x86_64;
C:\Program Files (x86)\AMD APP\bin\x86;C:\Windows\system32;
C:\Windows;C:\Windows\System32\Wbem;
C:\Windows\System32\WindowsPowerShell\v1.0\;
C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;
C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;
C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;
C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;
C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT; 
C:\Program Files (x86)\Java\jdk1.6.0_45\bin;
C:\apache-maven-3.1.1\bin;
C:\Program Files (x86)\MySQL\MySQL Utilities 1.3.6\;
C:\apache-ant-1.9.3\bin;
C:\Program Files (x86)\Java\jdk1.6.0_45\bin;
C:\Program Files (x86)\Git\bin; 
C:\Program Files (x86)\Git\cmd;;.

INFO: JSR 356 WebSocket (Java WebSocket 1.0) support is not available 
when running on Java 6. To suppress this message, run Tomcat on Java 7, 
remove the WebSocket JARs from $CATALINA_HOME/lib or add 
the WebSocketJARs to thetomcat.util.scan.DefaultJarScanner.jarsToSkip property in 
$CATALINA_BASE/conf/catalina.properties. Note that the deprecated Tomcat 7 
WebSocket API will be available. 

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
              http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5"
         xmlns="http://java.sun.com/xml/ns/javaee">

  <!-- Servlets -->
  <servlet>
    <servlet-name>greetServlet</servlet-name>
    <servlet-class>ru.sersem.buggitgwt.server.DataProviderServiceImpl</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>greetServlet</servlet-name>
    <url-pattern>/buggitgwt/greet</url-pattern>
  </servlet-mapping>

  <!-- Default page to serve -->
  <welcome-file-list>
    <welcome-file>BugGitGwt.html</welcome-file>
  </welcome-file-list>

</web-app>

greetServlet
ru.sersem.buggitgwt.server.DataProviderServiceImpl
greetServlet
/胡说八道
BugGitGwt.html

服务：

@RemoteServiceRelativePath("greet")
public interface DataProviderService extends RemoteService {
    List<List<String>> getDatabaseData(String call);
}

@RemoteServiceRelativePath（“问候”）
公共接口DataProviderService扩展了RemoteService{
列出getDatabaseData（字符串调用）；
}

从外部服务器运行GWT项目要遵循的步骤

• 打开命令窗口
• 导航到包含以下内容的war文件夹：

  war
  |
  |__GWTTestProject.html
  |__GWTTestProject.css
  |__gwttestproject folder
  |  |
  |  |__compiled js files and html files generated by GWT compilation
  |
  |__WEB-INF folder
     |
     |__classes
     |__deploy
     |__lib
     |__web.xml
  

• 使用命令提示符执行以下命令以创建war文件

   jar -cf gwtproject.war *
  

• 在tomcat webapps下复制gwtproject.war
• 启动服务器

请在以下文件中再次检查：

web.xml:

  <servlet>
    <servlet-name>greetServlet</servlet-name>
    <servlet-class>com.gwt.test.server.GreetingServiceImpl</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>greetServlet</servlet-name>
    <url-pattern>/gwtproject/greet</url-pattern>
  </servlet-mapping>

@RemoteServiceRelativePath("greet")
public interface GreetingService extends RemoteService {
    Long greetServer(String name) throws IllegalArgumentException;
}

---

好的。有一件事。我们在企业中使用Java6，但GWT支持Java7。所以它在eclipse中的java 7下工作，但在系统环境中它关闭了。

您面临什么问题？请详细说明。Tomcat在同一台机器上吗？如果没有，可能您在某处有太多的

localhost

引用。需要更多关于特定错误的信息！我在同一台机器上使用tomcat。我使用gwt rpc。当我启动示例gwt应用程序时，我收到一个消息框，其中包含

，在尝试联系服务器时出错。请检查您的网络连接并重试。

如何获取有关错误的详细信息？请共享您为greet定义了servet映射的web.xml。URL

/BugGitGwt/BugGitGwt/greet

有问题。这将是

/buggitgwt/greet

。它不能解决问题。结果和以前一样。我会回来做更多的分析。我在从外部服务器运行时遇到了相同的异常。我使用Eclipse作为新的Web应用程序创建了一个新的示例GWT项目。一个新的GWT编译，然后按照上面提到的步骤和它的工作良好。请在删除缓存后使用新项目或GWT编译现有项目重试。请查看下面的答案。我通过更改Java解决了这个问题）感谢您的帮助它在jdk1.6.0_23和GWT 2.5.0中也能正常工作。谢谢。