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出於某種原因，@Value註解沒有被注入到我的課，我現在把它用作其他測試類的基。我是Spring的新手，我的Java知識並不是最好的。我相信對於有更多經驗的人來說，這一點會更加明顯，但我無法弄清楚這一點。@Value註釋文件
如果我註釋掉setDbProperties()方法，這些字段是填充的，但僅使用@Value註釋，我會在字段中獲得空值。
這裏是我的基礎測試類：
package com.blah;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Properties;
import org.dbunit.DBTestCase;
import org.dbunit.PropertiesBasedJdbcDatabaseTester;
import org.dbunit.dataset.IDataSet;
import org.dbunit.dataset.xml.FlatXmlDataSetBuilder;
import org.dbunit.operation.DatabaseOperation;
import org.junit.After;
import org.junit.Before;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.test.context.ActiveProfiles;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {
"classpath:/WEB-INF/application-context.xml",
"classpath:/WEB-INF/application-context-test.xml" })
@ActiveProfiles("test")
public abstract class BaseDbTestCase extends DBTestCase {
@Value("${test.db.connection.url}")
private String connectionUrl;
@Value("${test.db.driver.class}")
private String driverClass;
@Value("${test.db.username}")
private String dbUserName;
@Value("${test.db.password}")
private String dbPassword;
@Value("${test.db.datasource.path}")
private String dataSource;
public BaseDbTestCase(String name) throws IOException {
super(name);
// setDbProperties();
System.setProperty(
PropertiesBasedJdbcDatabaseTester.DBUNIT_DRIVER_CLASS,
driverClass);
System.setProperty(
PropertiesBasedJdbcDatabaseTester.DBUNIT_CONNECTION_URL,
connectionUrl);
System.setProperty(PropertiesBasedJdbcDatabaseTester.DBUNIT_USERNAME,
dbUserName);
System.setProperty(PropertiesBasedJdbcDatabaseTester.DBUNIT_PASSWORD,
dbPassword);
}
@After
public void after() throws Exception {
DatabaseOperation.DELETE_ALL.execute(getConnection(), getDataSet());
}
@Override
protected IDataSet getDataSet() throws Exception {
return new FlatXmlDataSetBuilder()
.build(new FileInputStream(dataSource));
}
private void setDbProperties() throws IOException, FileNotFoundException {
Properties properties = new Properties();
properties.load(new FileInputStream(
"src/main/java/resources/application.properties"));
connectionUrl = properties.getProperty("test.db.connection.url");
driverClass = properties.getProperty("test.db.driver.class");
dbUserName = properties.getProperty("test.db.username");
dbPassword = properties.getProperty("test.db.password");
dataSource = properties.getProperty("test.db.datasource.path");
}
@Override
protected DatabaseOperation getSetUpOperation() throws Exception {
return DatabaseOperation.REFRESH;
}
@Override
protected DatabaseOperation getTearDownOperation() throws Exception {
return DatabaseOperation.NONE;
}
@Before
public void init() throws Exception {
DatabaseOperation.REFRESH.execute(getConnection(), getDataSet());
}
}
正如你所看到的，其他春季（和非彈簧）的註解是在這個類的工作。
我有<context:property-placeholder location="classpath:/resources/application.properties" />在我的應用程序上下文。
另外，@Value註解在擴展BaseDbTestCase類的類中工作正常。
TIA
更新： 採取@六必居的建議，系統屬性的設置移動到init（）方法（與@Before註釋）之後，我現在得到以下堆棧跟蹤。基於調試，它在拋出錯誤之前似乎沒有超過構造函數。
org.dbunit.assertion.DbAssertionFailedError: driverClass is null
at org.dbunit.assertion.DefaultFailureHandler$DefaultFailureFactory.createFailure(DefaultFailureHandler.java:265)
at org.dbunit.assertion.DefaultFailureHandler.createFailure(DefaultFailureHandler.java:110)
at org.dbunit.assertion.SimpleAssert.fail(SimpleAssert.java:90)
at org.dbunit.assertion.SimpleAssert.assertTrue(SimpleAssert.java:77)
at org.dbunit.assertion.SimpleAssert.assertNotNullNorEmpty(SimpleAssert.java:61)
at org.dbunit.JdbcDatabaseTester.<init>(JdbcDatabaseTester.java:103)
at org.dbunit.PropertiesBasedJdbcDatabaseTester.<init>(PropertiesBasedJdbcDatabaseTester.java:68)
at org.dbunit.DBTestCase.newDatabaseTester(DBTestCase.java:70)
at org.dbunit.DatabaseTestCase.getDatabaseTester(DatabaseTestCase.java:109)
at org.dbunit.DatabaseTestCase.setUp(DatabaseTestCase.java:151)
at junit.framework.TestCase.runBare(TestCase.java:132)
at junit.framework.TestResult$1.protect(TestResult.java:110)
at junit.framework.TestResult.runProtected(TestResult.java:128)
at junit.framework.TestResult.run(TestResult.java:113)
at junit.framework.TestCase.run(TestCase.java:124)
at junit.framework.TestSuite.runTest(TestSuite.java:243)
at junit.framework.TestSuite.run(TestSuite.java:238)
at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
我也有同樣的問題。你能找到解決方案嗎？ –