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  | <template> 
 |    <div class="message-container"> 
 |      <div style="padding: 0 0 20px 10px"> 
 |        <el-alert title="关于signalR使用" type="success" show-icon 
 |          ><p> 
 |            1、目前只是用来处理首页消息发送,可参照Index.vue与HomePageMessageHub.cs 
 |          </p> 
 |          <p> 
 |            2、文档见:https://docs.microsoft.com/zh-cn/aspnet/core/signalr/introduction?view=aspnetcore-3.1 
 |          </p></el-alert 
 |        > 
 |      </div> 
 |    
 |      <vol-form 
 |        ref="form" 
 |        :formRules="formOptions" 
 |        :labelWidth="90" 
 |        :formFields="formFields" 
 |      > 
 |      </vol-form> 
 |      <div class="btns"> 
 |        <el-button 
 |          type="primary" 
 |          @click="sendMessage" 
 |          ><i class="el-icon-chat-line-round"></i>发送消息</el-button 
 |        > 
 |      </div> 
 |    </div> 
 |  </template> 
 |    
 |  <script> 
 |  //默认不会自动重连,需手动调用withAutomaticReconnect 
 |  let connection; 
 |  import * as signalR from '@microsoft/signalr'; 
 |  import VolForm from '@/components/basic/VolForm.vue'; 
 |  export default { 
 |    components: { 
 |      'vol-form': VolForm 
 |    }, 
 |    data() { 
 |      return { 
 |        message: '', 
 |        size: { 
 |          minRows: 8, 
 |          maxRows: 30 
 |        }, 
 |        formOptions: [ 
 |          [{ title: '登陆账号', required: true, field: 'userName' }], 
 |          [{ title: '消息标题', required: true, field: 'title' }], 
 |          [ 
 |            { 
 |              title: '消息内容', 
 |              required: true, 
 |              field: 'message', 
 |              type: 'textarea', 
 |              minRows: 10 
 |            } 
 |          ] 
 |        ], 
 |        formFields: { 
 |          userName: 'admin666', 
 |          title: '发送标题', 
 |          message: '' 
 |        } 
 |      }; 
 |    }, 
 |    methods: { 
 |      sendMessage() { 
 |        connection.invoke( 
 |          'sendHomeMessage', 
 |          this.formFields.userName, 
 |          this.formFields.title, 
 |          this.formFields.message || '无' 
 |        ); 
 |        this.$message.success('消息发送成功'); 
 |      } 
 |    }, 
 |    created() {}, 
 |    mounted() { 
 |      //获取当前登陆的用户信息 
 |      this.http.post('api/user/GetCurrentUserInfo').then((result) => { 
 |        connection = new signalR.HubConnectionBuilder() 
 |          .withAutomaticReconnect() 
 |          .withUrl( 
 |            `${this.http.ipAddress}message?userName=${result.data.userName}` 
 |          ) 
 |          .build(); 
 |        connection.qs = { test: 123 }; 
 |        connection.start().catch((err) => alert(err.message)); 
 |        //自动重连成功后的处理 
 |        connection.onreconnected((connectionId) => { 
 |          console.log(connectionId); 
 |        }); 
 |        let _this = this; 
 |        connection.on('ReceiveHomePageMessage', function (message) { 
 |          _this.$notify.info({ 
 |            title: '消息', 
 |            message: message + '' 
 |          }); 
 |        }); 
 |      }); 
 |    } 
 |  }; 
 |  </script> 
 |  <style scoped lang="less"> 
 |  .message-container { 
 |    margin: 20px; 
 |    .btns { 
 |      text-align: center; 
 |      padding: 10px; 
 |    } 
 |  } 
 |  </style> 
 |  
  |