导入 CSV
适用于 ✅ 开源版 ✅ 专业版 ✅ 企业版
下面的 CSV 数据表示两个作者记录,它们可能之前由 jOOQ 的导出功能导出,然后在 Microsoft Excel 或任何其他电子表格工具中修改
ID,AUTHOR_ID,TITLE <-- Note the CSV header. By default, the first line is ignored 1,1,1984 2,1,Animal Farm
以下示例显示了如何映射源表和目标表。
// Specify fields from the target table to be matched with fields from the source CSV by position. // Positional matching is independent of the presence of a header row in the CSV content. create.loadInto(BOOK) .loadCSV(inputstream, encoding) .fields(BOOK.ID, BOOK.AUTHOR_ID, BOOK.TITLE) .execute(); // Use "null" field placeholders to ignore source columns by position. create.loadInto(BOOK) .loadCSV(inputstream, encoding) .fields(BOOK.ID, null, BOOK.TITLE) .execute(); // Match target fields with source fields by "corresponding" name. // This assumes that CSV row 1 is a header row containing the source field names. create.loadInto(BOOK) .loadCSV(inputstream, encoding) .fieldsCorresponding() .execute();
CSV 特定选项
您可以传递以下标志之一来指定应如何解析 CSV 内容
create.loadInto(BOOK) .loadCSV(inputstream, encoding) .fields(BOOK.ID, BOOK.AUTHOR_ID, BOOK.TITLE) // Ignore a certain number of header rows. By default, this is 1. .ignoreRows(1) // The quote character for use with string content containing quotes or separators. By default, this is " .quote('"') // The separator character that separates columns. By default, this is , .separator(',') // The null string allows for distinguishing between empty strings and null. By default, there is no null string. .nullString("{null}") .execute();
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