找不到com.microsoft.jdbc.sqlserver.SQLServerDriver

adapter.js文件：

var procedure1Statement = WL.Server.createSQLStatement("select [sname] from [TestDb].[dbo].[studentinfo]");
function procedure1() {
    return WL.Server.invokeSQLStatement({
        preparedStatement : procedure1Statement,
        parameters : []
    });
}

adapter.xml文件：

<dataSourceDefinition>
                <driverClass>com.microsoft.sqlserver.jdbc.SQLServerDriver</driverClass>
                <url>jdbc:sqlserver://localhost;databaseName=TestDb</url>
                <user>user</user>
                <password>pass</password> 
            </dataSourceDefinition>

得到这样的错误：

{
   "errors": [
      "Runtime: java.lang.ClassNotFoundException: Class com.microsoft.jdbc.sqlserver.SQLServerDriver not found in Worklight platform or project \/HelloWorld"
   ],