好的，我可以为您提供一份基于element-ui二次封装的完整form表单代码，包括时间、select、input、checkbox、upload上传，并支持表单校验和自定义校验。只需要传递数据就可以自动渲染

好的，以下是基于element-ui二次封装的完整form表单代码，只需要传递数据就可以自动渲染：

Form.vue：

<template>
  <el-form ref="form" :model="formData" :rules="formRules" label-width="100px" style="max-width: 600px;">
    <slot></slot>
    <el-form-item>
      <el-button type="primary" @click="submitForm">提交</el-button>
      <el-button @click="resetForm">重置</el-button>
    </el-form-item>
  </el-form>
</template>

<script>
export default {
  name: 'Form',
  props: {
    formData: {
      type: Object,
      default: () => ({})
    },
    formRules: {
      type: Object,
      default: () => ({})
    }
  },
  methods: {
    submitForm() {
      this.$refs.form.validate((valid) => {
        if (valid) {
          this.$emit('submit', this.formData);
        } else {
          this.$message.error('表单校验失败，请检查表单信息');
          return false;
        }
      });
    },
    resetForm() {
      this.$refs.form.resetFields();
    }
  }
}
</script>

FormItem.vue：

<template>
  <el-form-item :label="label">
    <component :is="type" v-model="formData[propName]" :options="options" :placeholder="placeholder" />
  </el-form-item>
</template>

<script>
export default {
  name: 'FormItem',
  props: {
    label: {
      type: String,
      default: ''
    },
    type: {
      type: String,
      default: 'input'
    },
    propName: {
      type: String,
      required: true
    },
    options: {
      type: Array,
      default: () => []
    },
    placeholder: {
      type: String,
      default: ''
    }
  },
  inject: ['formData']
}
</script>

FormInput.vue：

<template>
  <el-input v-model="value" :placeholder="placeholder" />
</template>

<script>
export default {
  name: 'FormInput',
  props: {
    value: {
      type: String,
      default: ''
    },
    placeholder: {
      type: String,
      default: ''
    }
  },
  model: {
    prop: 'value',
    event: 'change'
  },
  methods: {
    change(value) {
      this.$emit('change', value);
    }
  }
}
</script>

FormSelect.vue：

<template>
  <el-select v-model="value" :placeholder="placeholder">
    <el-option v-for="(option, index) in options" :key="index" :label="option.label" :value="option.value" />
  </el-select>
</template>

<script>
export default {
  name: 'FormSelect',
  props: {
    value: {
      type: String,
      default: ''
    },
    options: {
      type: Array,
      default: () => []
    },
    placeholder: {
      type: String,
      default: ''
    }
  },
  model: {
    prop: 'value',
    event: 'change'
  },
  methods: {
    change(value) {
      this.$emit('change', value);
    }
  }
}
</script>

FormCheckbox.vue：

<template>
  <el-checkbox-group v-model="value">
    <el-checkbox v-for="(option, index) in options" :key="index" :label="option.value">{{ option.label }}</el-checkbox>
  </el-checkbox-group>
</template>

<script>
export default {
  name: 'FormCheckbox',
  props: {
    value: {
      type: Array,
      default: () => []
    },
    options: {
      type: Array,
      default: () => []
    }
  },
  model: {
    prop: 'value',
    event: 'change'
  },
  methods: {
    change(value) {
      this.$emit('change', value);
    }
  }
}
</script>

FormDateTime.vue：

<template>
  <el-date-picker v-model="value" type="datetime" :placeholder="placeholder" />
</template>

<script>
export default {
  name: 'FormDateTime',
  props: {
    value: {
      type: String,
      default: ''
    },
    placeholder: {
      type: String,
      default: ''
    }
  },
  model: {
    prop: 'value',
    event: 'change'
  },
  methods: {
    change(value) {
      this.$emit('change', value);
    }
  }
}
</script>

FormUpload.vue：

<template>
  <el-upload
    class="upload-demo"
    action="/upload"
    :on-success="handleSuccess"
    :on-error="handleError"
    :before-upload="beforeUpload"
    :file-list="fileList"
    :limit="3"
    :on-exceed="handleExceed"
    :show-file-list="false">
    <el-button size="small" type="primary">点击上传</el-button>
  </el-upload>
</template>

<script>
export default {
  name: 'FormUpload',
  props: {
    fileList: {
      type: Array,
      default: () => []
    }
  },
  data() {
    return {
      uploadParam: {}
    };
  },
  methods: {
    handleSuccess(response, file, fileList) {
      console.log(response, file, fileList);
    },
    handleError(error, file, fileList) {
      console.log(error, file, fileList);
    },
    beforeUpload(file) {
      const isJPG = file.type === 'image/jpeg';
      const isLt2M = file.size / 1024 / 1024 < 2;

      if (!isJPG) {
        this.$message.error('上传图片只能是 JPG 格式!');
      }
      if (!isLt2M) {
        this.$message.error('上传图片大小不能超过 2MB!');
      }
      return isJPG && isLt2M;
    },
    handleExceed(files, fileList) {
      this.$message.warning(`当前限制选择 3 个文件，本次选择了 ${files.length} 个文件，共选择了 ${files.length + fileList.length} 个文件`);
    }
  }
}
</script>

使用方法：

<template>
  <Form :formData="formData" :formRules="formRules" @submit="submitForm">
    <FormItem label="时间" propName="time" type="FormDateTime" />
    <FormItem label="选择" propName="select" type="FormSelect" :options="selectOptions" />
    <FormItem label="输入" propName="input" type="FormInput" />
    <FormItem label="多选框" propName="checkbox" type="FormCheckbox" :options="checkboxOptions" />
    <FormItem propName="upload" type="FormUpload" :fileList="fileList" />
  </Form>
</template>

<script>
import Form from '@/components/Form.vue';
import FormItem from '@/components/FormItem.vue';
import FormDateTime from '@/components/FormDateTime.vue';
import FormSelect from '@/components/FormSelect.vue';
import FormInput from '@/components/FormInput.vue';
import FormCheckbox from '@/components/FormCheckbox.vue';
import FormUpload from '@/components/FormUpload.vue';

export default {
  components: {
    Form,
    FormItem,
    FormDateTime,
    FormSelect,
    FormInput,
    FormCheckbox,
    FormUpload
  },
  data() {
    return {
      formData: {
        time: '',
        select: '',
        input: '',
        checkbox: [],
        upload: ''
      },
      formRules: {
        time: [{ required: true, message: '请选择时间', trigger: 'change' }],
        select: [{ required: true, message: '请选择', trigger: 'change' }],
        input: [{ required: true, message: '请输入', trigger: 'blur' }]
      },
      selectOptions: [
        { label: '选项1', value: 'option1' },
        { label: '选项2', value: 'option2' },
        { label: '选项3', value: 'option3' }
      ],
      checkboxOptions: [
        { label: '选项1', value: 'option1' },
        { label: '选项2', value: 'option2' },
        { label: '选项3', value: 'option3' }
      ],
      fileList: []
    };
  },
  methods: {
    submitForm(formData) {
      console.log(formData);
      this.$message.success('提交成功');
    }
  }
};
</script>

以上代码中，Form组件负责渲染整个表单，FormItem组件负责渲染表单项，所有表单项的数据都存储在formData中，表单校验规则存储在formRules中。

使用时，只需要在Form中传递formData和formRules，然后在FormItem中通过propName指定对应的数据，通过type指定渲染的组件类型，其他属性根据组件类型传递对应的属性即可。其中，FormInput、FormSelect、FormDateTime、FormCheckbox、FormUpload组件分别对应input、select、date-picker、checkbox-group和upload组件，同时支持v-model绑定和change事件。

希望这份代码能够满足您的需求。