refactor(接口测试): 数据库配置添加清空按钮

frontend/src/business/components/api/test/components/request/database/DatabaseConfig.vue

@@ -58,7 +58,11 @@
           this.currentConfig = new DatabaseConfig();
         },
         rowSelect(config) {
+          //防止清除后再点击该行无响应
+          this.currentConfig = {};
+          this.$nextTick(() => {
             this.currentConfig = config;
+          });
         }
       }
     }

frontend/src/business/components/api/test/components/request/database/DatabaseConfigList.vue

@@ -80,4 +80,8 @@
     float: right;
   }
 
+  .el-table {
+    cursor: pointer;
+  }
+
 </style>

frontend/src/business/components/api/test/components/request/database/DatabaseFrom.vue

@@ -39,9 +39,10 @@
 
       <el-form-item>
         <div class="buttons">
-          <el-button type="primary" v-show="currentConfig.id" size="small" @click="validate()">{{$t('commons.validate')}}</el-button>
+          <el-button type="primary" v-show="currentConfig.id" size="small" @click="validate">{{$t('commons.validate')}}</el-button>
           <el-button type="primary" v-show="currentConfig.id" size="small" @click="save('update')">{{$t('commons.update')}}</el-button>
-          <el-button type="primary" size="small" @click="save('add')">{{$t('commons.add')}}</el-button>
+          <el-button type="primary" v-show="currentConfig.id" size="small" @click="clear">{{$t('commons.clear')}}</el-button>
+          <el-button type="primary" v-show="!currentConfig.id"  size="small" @click="save('add')">{{$t('commons.add')}}</el-button>
         </div>
       </el-form-item>
 
@@ -127,6 +128,9 @@
             }
           });
         },
+        clear() {
+          this.currentConfig = new DatabaseConfig();
+        },
         validate() {
           this.result = this.$post('/api/database/validate', this.currentConfig, () => {
             this.$success(this.$t('commons.connection_successful'));