当dbunit尝试从XML文件中读取数据时，我收到NoSuchTableException异常。最初我认为这个问题与HSQLDB有关，因此切换到H2数据库，但问题仍然存在。我是dbunit的新手，无法获得一些关于此的最新文档。在线发现的所有教程都使用了dbunit的旧版本，而且描述性不够。
不确定这里发生了什么。任何人都可以指导我这个程序有什么问题吗？
错误记录
SEVERE: Table 'users' not found in tableMap=org.dbunit.dataset.OrderedTableNameMap[_tableNames=[], _tableMap={}, _caseSensitiveTableNames=false]
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.493 sec <<< FAILURE!
testGetUser(com.istore.dao.UserDaoTest) Time elapsed: 0.42 sec <<< ERROR!
org.dbunit.dataset.NoSuchTableException: users
at org.dbunit.database.DatabaseDataSet.getTableMetaData(DatabaseDataSet.java:288)
at org.dbunit.operation.DeleteAllOperation.execute(DeleteAllOperation.java:109)
at org.dbunit.operation.CompositeOperation.execute(CompositeOperation.java:79)
at org.dbunit.AbstractDatabaseTester.executeOperation(AbstractDatabaseTester.java:190)
at org.dbunit.AbstractDatabaseTester.onSetup(AbstractDatabaseTester.java:103)
的pom.xml
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.187</version>
<scope>runtime</scope>
</dependency>
的src /测试/资源/ users.xml中
<?xml version="1.0" encoding="UTF-8"?>
<dataset>
<users id="1" name="Nital"/>
</dataset>
AbstractUserDaoTest.java
public class AbstractUserDaoTest extends DataSourceBasedDBTestCase {
private static final String USERS_DATASET = "/users.xml";
private static final UserDao dao = new UserDao();
protected static Connection connection;
protected static HsqldbConnection dbunitConnection;
@Override
protected DataSource getDataSource() {
//create datasource
BasicDataSource dataSource = new BasicDataSource();
dataSource.setDriverClassName("org.h2.Driver");
dataSource.setUrl("jdbc:h2:mem:test");
dataSource.setUsername("sa");
dataSource.setPassword("");
return dataSource;
}
@Override
protected IDataSet getDataSet() throws Exception {
String fileName = getClass().getResource(USERS_DATASET).getFile();
System.out.println("fileName = " + fileName);
FlatXmlDataSet dataset = new FlatXmlDataSetBuilder().build(new FileInputStream(fileName));
System.out.println("dataset = " + dataset);
String[] tableNames = dataset.getTableNames();
for (String t : tableNames) {
System.out.println("t = " + t);
}
return dataset;
}
@AfterClass
public void closeDatabase() throws Exception {
if (connection != null) {
connection.close();
connection = null;
}
if (dbunitConnection != null) {
dbunitConnection.close();
dbunitConnection = null;
}
}
}
UserDaoTest.java
public class UserDaoTest extends AbstractUserDaoTest {
@Test
public void testGetUser() {
String a = "abc";
assertNotNull(a);
}
}
UserDao.java
public class UserDao extends BaseDao {
private static final Logger LOG = Logger.getLogger(UserDao.class);
public UserDao() {
}
public UserDao(DataSource dataSource) throws SQLException {
super(dataSource);
}
public User getUser(String userCd) throws SQLException {
String sql = "select * from users a where a.user_cd='" + userCd + "' and a.active='Y'";
System.out.println("sql = " + sql);
UserQueryExecutor executor = new UserQueryExecutor(dataSource.getConnection(), sql);
User user = executor.getUser();
LOG.debug("user = " + user);
return user;
}
//used in dbunit tests
public boolean createTable() throws SQLException {
String sql = "CREATE TABLE users (" +
" id INTEGER GENERATED BY DEFAULT AS IDENTITY(START WITH 1)," +
" name VARCHAR(100) NOT NULL) ";
System.out.println("sql = " + sql);
System.out.println("cn = " + dataSource.getConnection());
UserQueryExecutor queryExecutor = new UserQueryExecutor(dataSource.getConnection(), sql);
boolean success = queryExecutor.createTable();
System.out.println("success = " + success);
return success;
}
}
BaseDao.java
public class BaseDao {
private static final Logger LOG = Logger.getLogger(BaseDao.class);
protected DataSource dataSource;
//using this field for dbunit tests, otherwise dataSource will be sufficient
protected Connection connection;
public BaseDao() {
}
public BaseDao(DataSource dataSource) throws SQLException {
this.dataSource = dataSource;
}
public void setDataSource(DataSource dataSource) {
this.dataSource = dataSource;
}
//used only for dbunit tests
public void setConnection(Connection connection) {
this.connection = connection;
}
}
UserQueryExecutor.java
public final class UserQueryExecutor extends BaseQueryExecutor {
private static final Logger LOG = Logger.getLogger(UserQueryExecutor.class);
public UserQueryExecutor(Connection cn, String sql) {
super(cn, sql);
}
public User getUser() {
Statement stmt = null;
ResultSet rs = null;
User user = null;
LOG.debug(sql);
try {
stmt = cn.createStatement();
rs = stmt.executeQuery(sql);
while (rs != null && rs.next()) {
user = new DataPopulator().populateUser(rs);
}
LOG.debug("user = " + user);
} catch (SQLException ex) {
LOG.error("Exception whiile fetching data for a user.......", ex);
} finally {
DbUtils.closeQuietly(cn, stmt, rs);
}
return user;
}
public boolean createTable() {
Statement stmt = null;
ResultSet rs = null;
boolean tableCreated = false;
LOG.debug(sql);
try {
stmt = cn.createStatement();
tableCreated = stmt.execute(sql);
LOG.debug("tableCreated = " + tableCreated);
} catch (SQLException ex) {
LOG.error("Exception whiile creating user table.......", ex);
} finally {
DbUtils.closeQuietly(cn, stmt, rs);
}
return tableCreated;
}
}
BaseQueryExecutor.java
public class BaseQueryExecutor {
protected Connection cn;
protected String sql;
public BaseQueryExecutor(Connection cn, String sql) {
this.cn = cn;
this.sql = sql;
}
}
答案 0 :(得分：0)
DBUnit不会自动从XML数据集创建数据库表，因为它没有足够的信息。
除非我弄错了，否则你不能在任何地方调用createTable()的{{1}}方法。
因此，您必须在测试之前执行脚本来创建数据库模式（通常可以在setUp方法中执行）。其他SO问题中有更多信息，例如this
希望它有所帮助。