代码 ：

public class TestDbunit  {

public static JdbcDatabaseTester tester;

IDataSet dataSet_Insert ;

IDataSet dataSet_init;

IDataSet dataSet_bak;

@BeforeClass

protected void setUp() throws Exception{

System.out.println("BeforeClass");

IDatabaseConnection conn=tester.getConnection();

String[] depTableNames=new String[]{"ROLES"，"USERS"，"USER_ROLES"};

try{

IDataSet utput=conn.createDataSet(depTableNames);

FileOutputStream fos=new FileOutputStream("user-roles-bak.xml");

//备份数据

FlatXmlDataSet.write(output， fos);

//初始化数据

//dataSet_init=new FlatXmlDataSet(new File("user-roles.xml"));

//DatabaseOperation.CLEAN_INSERT.execute(conn， dataSet_init);

}finally{

conn.close();

}

}

@BeforeTest

public void loadDB()throws Exception{

System.out.println("@BeforeTest");

tester=new  JdbcDatabaseTester( "com.mysql.jdbc.Driver" ，

               "jdbc:mysql://localhost:3306/test" ，  "root" ， "" );

dataSet_init=new FlatXmlDataSet(new File("user-roles.xml"));

IDatabaseConnection conn=tester.getConnection();

try{

DatabaseOperation.CLEAN_INSERT.execute(conn， dataSet_init);

}finally{

conn.close();

}

}