Enum DocError 

#[non_exhaustive]
pub enum DocError {
    Io(Error),
    Zip(String),
    Format(String),
    Template {
        placeholder: String,
        message: String,
    },
    Conversion {
        field: String,
        value: String,
        message: String,
    },
    Unsupported(String),
    Document(String),
}

库统一错误枚举。

Java EasyExcel 将错误分散在七个 RuntimeException 子类中； 本枚举将它们合并为一个惯用的 Rust 类型。

对应 Java: com.alibaba.excel.exception.ExcelAnalysisException、 ExcelGenerateException、ExcelDataConvertException 等

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Io(Error)

I/O 错误，包装 std::io::Error。

对应 Java: IOException

Zip(String)

ZIP 包错误（来自 docx-rs 打包）。

对应 Java: ExcelAnalysisException 中的 ZIP 相关错误

Format(String)

无效或不支持的文档格式。

对应 Java: ExcelAnalysisException("The supplied file was not supported")

Template

模板占位符无法解析或处理。

对应 Java: ExcelAnalysisException 中的模板相关错误（easyexcel-template）

Fields

placeholder: String

导致错误的占位符标记。

message: String

人类可读的描述。

Conversion

单元格或字段值无法与目标类型互转。

对应 Java: com.alibaba.excel.exception.ExcelDataConvertException

Fields

field: String

字段或列名。

value: String

转换失败的值。

message: String

人类可读的描述。

Unsupported(String)

请求的操作不被当前格式或配置支持。

对应 Java: UnsupportedOperationException

Document(String)

通用文档级错误。

对应 Java: ExcelAnalysisException / ExcelGenerateException

Trait Implementations

impl Debug for DocError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for DocError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for DocError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for DocError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<ZipError> for DocError

fn from(e: ZipError) -> Self

Converts to this type from the input type.