1、下载gwt-sdk，https://developers.google.com/web-toolkit/download
2、下载完成之后解压，我解压的目录是D:\Program Files\gwt-2.5.1
3、配置环境变量，相信安装过jdk的人都应该知道环境变量在那配置吧！设置path为你解决的的目录，set path=path;D:\Program Files\gwt-2.5.1
4、进入你要生成项目的一个目录下，按shift+右键点击打开命令行，执行
webAppCreator com.hnhcc.gwt
5、在控制台自动生成项目demo
Created directory E:\gwtDemo\src Created directory E:\gwtDemo\src\com\hnhcc Created directory E:\gwtDemo\src\com\hnhcc\client Created directory E:\gwtDemo\src\com\hnhcc\server Created directory E:\gwtDemo\src\com\hnhcc\shared Created directory E:\gwtDemo\test Created directory E:\gwtDemo\test\com\hnhcc Created directory E:\gwtDemo\war Created directory E:\gwtDemo\war\WEB-INF Created file E:\gwtDemo\src\com\hnhcc\gwt.gwt.xml Created file E:\gwtDemo\src\com\hnhcc\client\GreetingService.java Created file E:\gwtDemo\src\com\hnhcc\client\GreetingServiceAsync.java Created file E:\gwtDemo\src\com\hnhcc\client\gwt.java Created file E:\gwtDemo\src\com\hnhcc\server\GreetingServiceImpl.java Created file E:\gwtDemo\src\com\hnhcc\shared\FieldVerifier.java Created file E:\gwtDemo\war\WEB-INF\web.xml Created file E:\gwtDemo\war\gwt.css Created file E:\gwtDemo\war\gwt.html Created file E:\gwtDemo\war\favicon.ico Created file E:\gwtDemo\.classpath Created file E:\gwtDemo\.project Created file E:\gwtDemo\gwt.launch Created file E:\gwtDemo\README.txt Created file E:\gwtDemo\build.xml
6、生成的文件中我们看到有build.xml为ant的构建文件和熟悉的.classpath和.project，所以可以直接把项目导入到myeclipse或eclipse下，其中gwt.java为主程序
7、先用ant构建一下项目，右键点击build.xml文件run as antbuild
8、右键点击gwt.java，profile as先建一个运行方式
9、点击运行将弹出如下对话框
10、选择在默认浏览器中打开，可能会出现没有安装浏览器插件之类的，为了以后开发可以安装上，不过其实也不需要，gwt提供有两种运行模式，Hosted Model和Web Model。
11、如果只是想简单了解一下gwt的话，把浏览器的地址去掉gwt.codesvr=127.0.0.1:9997，改为http://127.0.0.1:8888/gwt.html