List<Message> messageList = new ArrayList<>();
时间: 2024-01-01 10:13:19 浏览: 85
这段代码创建了一个名为messageList的ArrayList对象,它可以存储Message对象。List是一个接口,ArrayList是它的一个实现类,它可以动态地添加或删除元素。在这里,List被初始化为空,因此它不包含任何元素。可以通过调用add()方法向List中添加Message对象,或通过调用get()方法获取特定位置的元素。
相关问题
给这个方法添加单元测试: public List<String> publishMessage(List<Integer> tdsStpIdList) throws CisTStpException{ List<String> messageList = new ArrayList<>(); for(Integer tdsStpId : tdsStpIdList) { String message = null; CisPubTds cisPubTds = monitorDao.getTdsPubRequestById(tdsStpId); if (cisPubTds == null) { message = CisTStpConstants.MSG_1; } if (cisPubTds != null && cisPubTds.getMessage() == null) { message = CisTStpConstants.MSG_2; } if (cisPubTds != null && cisPubTds.getIsStpEd() != null && cisPubTds.getIsStpEd() > 0) { message = CisTStpConstants.MSG_3; } if(message != null){ log.info(message+"{}", tdsStpId); messageList.add(tdsStpId + CisTStpConstants.COLON + message); continue; } boolean isPublished = publish(cisPubTds); if(message != null && isPublished){ log.info(CisTStpConstants.MSG_4+"{}", tdsStpIdList); messageList.add(tdsStpId + CisTStpConstants.COLON + CisTStpConstants.MSG_4); }else { log.info(CisTStpConstants.MSG_5+"{}", tdsStpId); messageList.add(tdsStpId + CisTStpConstants.COLON + CisTStpConstants.MSG_5); } }
好的,下面是一个可能的单元测试实现:
```
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import static org.mockito.Mockito.*;
public class PublishMessageTest {
@Mock
private MonitorDao monitorDao;
@Mock
private CisPubTds cisPubTds;
@InjectMocks
private YourClassName yourClassName;
@Before
public void setUp() {
MockitoAnnotations.initMocks(this);
}
@Test
public void testPublishMessage() throws CisTStpException {
// test data
List<Integer> tdsStpIdList = new ArrayList<>();
tdsStpIdList.add(1);
tdsStpIdList.add(2);
// mock the monitorDao
when(monitorDao.getTdsPubRequestById(1)).thenReturn(null);
when(monitorDao.getTdsPubRequestById(2)).thenReturn(cisPubTds);
when(cisPubTds.getMessage()).thenReturn(null);
when(cisPubTds.getIsStpEd()).thenReturn(1);
// execute the method
List<String> messageList = yourClassName.publishMessage(tdsStpIdList);
// verify the results
Assert.assertEquals("The error message list should have two elements", 2, messageList.size());
Assert.assertEquals("The first element should have the correct message", "1:" + CisTStpConstants.MSG_1, messageList.get(0));
Assert.assertEquals("The second element should have the correct message", "2:" + CisTStpConstants.MSG_3, messageList.get(1));
verify(monitorDao, times(2)).getTdsPubRequestById(anyInt());
verify(cisPubTds, times(1)).getMessage();
verify(cisPubTds, times(2)).getIsStpEd();
}
}
```
这个测试使用了 Mockito 框架来 mock 相关的对象,并且验证了当 `monitorDao.getTdsPubRequestById()` 方法返回不同结果时,`publishMessage()` 方法是否会返回正确的错误信息列表。测试中使用了 `assertEquals()` 和 `verify()` 方法来验证结果和行为是否如预期。需要注意的是,这个测试只覆盖了一部分情况,你需要根据实际情况增加更多的测试用例。
java用列表框Jlist<Message>实现,可以根据消息状态进行筛选信息,可以根据消息信息内容部分匹配进行筛选,可以删除选中信息,可以删除全部信息。
好的,以下是用JList和DefaultListModel实现信息筛选和删除的代码:
```
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.List;
public class MessageList extends JPanel implements ActionListener {
private DefaultListModel<Message> listModel;
private JList<Message> messageList;
private JComboBox<String> statusComboBox;
private JTextField filterTextField;
private JButton deleteButton;
private JButton deleteAllButton;
public MessageList() {
super(new BorderLayout());
listModel = new DefaultListModel<>();
messageList = new JList<>(listModel);
JScrollPane scrollPane = new JScrollPane(messageList);
scrollPane.setPreferredSize(new Dimension(400, 250));
JPanel controlPanel = new JPanel();
statusComboBox = new JComboBox<>(new String[]{"All", "Read", "Unread"});
statusComboBox.addActionListener(this);
controlPanel.add(statusComboBox);
filterTextField = new JTextField(20);
filterTextField.addActionListener(this);
controlPanel.add(filterTextField);
deleteButton = new JButton("Delete");
deleteButton.addActionListener(this);
controlPanel.add(deleteButton);
deleteAllButton = new JButton("Delete All");
deleteAllButton.addActionListener(this);
controlPanel.add(deleteAllButton);
add(scrollPane, BorderLayout.CENTER);
add(controlPanel, BorderLayout.SOUTH);
}
public void addMessage(Message message) {
listModel.addElement(message);
}
public void filterMessages() {
String status = (String) statusComboBox.getSelectedItem();
String filterText = filterTextField.getText();
List<Message> filteredList = new ArrayList<>();
for (int i = 0; i < listModel.size(); i++) {
Message message = listModel.getElementAt(i);
if ((status.equals("All") || status.equals(message.getStatus()))
&& (filterText.isEmpty() || message.getContent().contains(filterText))) {
filteredList.add(message);
}
}
messageList.setListData(filteredList.toArray(new Message[0]));
}
public void deleteSelectedMessage() {
int index = messageList.getSelectedIndex();
if (index >= 0) {
listModel.remove(index);
}
}
public void deleteAllMessages() {
listModel.removeAllElements();
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == statusComboBox || e.getSource() == filterTextField) {
filterMessages();
} else if (e.getSource() == deleteButton) {
deleteSelectedMessage();
} else if (e.getSource() == deleteAllButton) {
deleteAllMessages();
}
}
}
```
在这个类中,我们使用了 `DefaultListModel` 来存储消息列表,并将其传递给 `JList`。我们还在界面上添加了一个下拉列表框、一个文本框、一个删除选中消息的按钮和一个删除全部消息的按钮。
在 `filterMessages` 方法中,我们根据消息状态和消息内容部分匹配进行消息筛选,并将筛选结果设置为 `JList` 的数据。在 `deleteSelectedMessage` 方法中,我们删除选中的消息。在 `deleteAllMessages` 方法中,我们删除全部消息。在 `actionPerformed` 方法中,我们根据不同的事件源来调用不同的方法。
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