ssm+jquery聊天功能代码实现
时间: 2023-07-25 17:33:57 浏览: 204
以下是SSM(Spring+SpringMVC+MyBatis)集成jQuery实现聊天功能的代码示例:
首先是前端页面代码,使用jQuery实现聊天发送和接收:
```html
<!-- 聊天记录 -->
<div id="msg-box"></div>
<!-- 发送消息 -->
<div>
<input type="text" id="msg" placeholder="请输入消息内容">
<button id="send-btn">发送</button>
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script>
$(function() {
// 接收消息
setInterval(function() {
$.ajax({
url: "/getMsg",
type: "get",
success: function(result) {
console.log(result);
$("#msg-box").append("<p>" + result + "</p>");
},
error: function() {
console.log("获取消息失败");
}
});
}, 2000);
// 发送消息
$("#send-btn").click(function() {
var msg = $("#msg").val();
$.ajax({
url: "/sendMsg",
type: "post",
data: {msg: msg},
success: function(result) {
console.log(result);
$("#msg-box").append("<p style='color: blue;'>我:" + msg + "</p>");
$("#msg").val("");
},
error: function() {
console.log("发送消息失败");
}
});
});
});
</script>
```
接下来是后端代码实现:
1. 定义消息实体类:
```java
public class Message {
private Integer id;
private String content;
private Date createTime;
// getter和setter省略
}
```
2. 定义消息DAO接口和Mapper文件:
```java
public interface MessageMapper {
void addMessage(Message message);
List<Message> getAllMessages();
}
```
```xml
<mapper namespace="com.example.dao.MessageMapper">
<insert id="addMessage" parameterType="com.example.entity.Message">
insert into message(content, create_time)
values(#{content}, now())
</insert>
<select id="getAllMessages" resultMap="messageResultMap">
select * from message order by create_time desc
</select>
<resultMap id="messageResultMap" type="com.example.entity.Message">
<id column="id" property="id"/>
<result column="content" property="content"/>
<result column="create_time" property="createTime"/>
</resultMap>
</mapper>
```
3. 定义消息Service接口和实现:
```java
public interface MessageService {
void sendMessage(String content);
List<String> getAllMessages();
}
@Service
public class MessageServiceImpl implements MessageService {
@Autowired
private MessageMapper messageMapper;
@Override
public void sendMessage(String content) {
Message message = new Message();
message.setContent(content);
messageMapper.addMessage(message);
}
@Override
public List<String> getAllMessages() {
List<Message> messages = messageMapper.getAllMessages();
List<String> contents = new ArrayList<>();
for (Message message : messages) {
contents.add(message.getContent());
}
return contents;
}
}
```
4. 定义Controller处理消息发送和接收请求:
```java
@Controller
public class MessageController {
@Autowired
private MessageService messageService;
@RequestMapping("/sendMsg")
@ResponseBody
public String sendMsg(String msg) {
messageService.sendMessage(msg);
return "success";
}
@RequestMapping("/getMsg")
@ResponseBody
public String getMsg() {
List<String> messages = messageService.getAllMessages();
if (messages.size() > 0) {
return messages.get(0);
} else {
return "";
}
}
}
```
以上代码就是SSM+jQuery实现聊天功能的示例,可以根据实际需求进行修改和扩展。需要注意的是,该示例只实现了简单的一对一聊天,如果需要实现多人聊天或群聊等功能,需要进行更多的业务逻辑开发。
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