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update 重构 ExcelUtil 全导出方法支持 OutputStream 流导出 不局限于 response

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2.X
疯狂的狮子Li 2 years ago
parent 0d732b4e78
commit 846e945c83
1 changed files with 113 additions and 51 deletions
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164
ruoyi-common/ruoyi-common-excel/src/main/java/com/ruoyi/common/excel/utils/ExcelUtil.java
Unescape Escape View File

@ -24,6 +24,7 @@ import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.Collection;
import java.util.List;
@ -84,7 +85,13 @@ public class ExcelUtil {
* @param response 响应体
*/
public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, HttpServletResponse response) {
exportExcel(list, sheetName, clazz, false, response);
try {
resetResponse(sheetName, response);
ServletOutputStream os = response.getOutputStream();
exportExcel(list, sheetName, clazz, false, os);
} catch (IOException e) {
throw new RuntimeException("导出Excel异常");
}
}
/**
@ -100,23 +107,48 @@ public class ExcelUtil {
try {
resetResponse(sheetName, response);
ServletOutputStream os = response.getOutputStream();
ExcelWriterSheetBuilder builder = EasyExcel.write(os, clazz)
.autoCloseStream(false)
// 自动适配
.registerWriteHandler(new LongestMatchColumnWidthStyleStrategy())
// 大数值自动转换 防止失真
.registerConverter(new ExcelBigNumberConvert())
.sheet(sheetName);
if (merge) {
// 合并处理器
builder.registerWriteHandler(new CellMergeStrategy(list, true));
}
builder.doWrite(list);
exportExcel(list, sheetName, clazz, merge, os);
} catch (IOException e) {
throw new RuntimeException("导出Excel异常");
}
}
/**
* 导出excel
*
* @param list 导出数据集合
* @param sheetName 工作表的名称
* @param clazz 实体类
* @param os 输出流
*/
public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, OutputStream os) {
exportExcel(list, sheetName, clazz, false, os);
}
/**
* 导出excel
*
* @param list 导出数据集合
* @param sheetName 工作表的名称
* @param clazz 实体类
* @param merge 是否合并单元格
* @param os 输出流
*/
public static <T> void exportExcel(List<T> list, String sheetName, Class<T> clazz, boolean merge, OutputStream os) {
ExcelWriterSheetBuilder builder = EasyExcel.write(os, clazz)
.autoCloseStream(false)
// 自动适配
.registerWriteHandler(new LongestMatchColumnWidthStyleStrategy())
// 大数值自动转换 防止失真
.registerConverter(new ExcelBigNumberConvert())
.sheet(sheetName);
if (merge) {
// 合并处理器
builder.registerWriteHandler(new CellMergeStrategy(list, true));
}
builder.doWrite(list);
}
/**
* 单表多数据模板导出 模板格式为 {.属性}
*
@ -125,31 +157,46 @@ public class ExcelUtil {
* 例如: excel/temp.xlsx
* 重点: 模板文件必须放置到启动类对应的 resource 目录下
* @param data 模板需要的数据
* @param response 响应体
*/
public static void exportTemplate(List<Object> data, String filename, String templatePath, HttpServletResponse response) {
try {
resetResponse(filename, response);
ClassPathResource templateResource = new ClassPathResource(templatePath);
ExcelWriter excelWriter = EasyExcel.write(response.getOutputStream())
.withTemplate(templateResource.getStream())
.autoCloseStream(false)
// 大数值自动转换 防止失真
.registerConverter(new ExcelBigNumberConvert())
.build();
WriteSheet writeSheet = EasyExcel.writerSheet().build();
if (CollUtil.isEmpty(data)) {
throw new IllegalArgumentException("数据为空");
}
// 单表多数据导出 模板格式为 {.属性}
for (Object d : data) {
excelWriter.fill(d, writeSheet);
}
excelWriter.finish();
ServletOutputStream os = response.getOutputStream();
exportTemplate(data, templatePath, os);
} catch (IOException e) {
throw new RuntimeException("导出Excel异常");
}
}
/**
* 单表多数据模板导出 模板格式为 {.属性}
*
* @param templatePath 模板路径 resource 目录下的路径包括模板文件名
* 例如: excel/temp.xlsx
* 重点: 模板文件必须放置到启动类对应的 resource 目录下
* @param data 模板需要的数据
* @param os 输出流
*/
public static void exportTemplate(List<Object> data, String templatePath, OutputStream os) {
ClassPathResource templateResource = new ClassPathResource(templatePath);
ExcelWriter excelWriter = EasyExcel.write(os)
.withTemplate(templateResource.getStream())
.autoCloseStream(false)
// 大数值自动转换 防止失真
.registerConverter(new ExcelBigNumberConvert())
.build();
WriteSheet writeSheet = EasyExcel.writerSheet().build();
if (CollUtil.isEmpty(data)) {
throw new IllegalArgumentException("数据为空");
}
// 单表多数据导出 模板格式为 {.属性}
for (Object d : data) {
excelWriter.fill(d, writeSheet);
}
excelWriter.finish();
}
/**
* 多表多数据模板导出 模板格式为 {key.属性}
*
@ -158,37 +205,52 @@ public class ExcelUtil {
* 例如: excel/temp.xlsx
* 重点: 模板文件必须放置到启动类对应的 resource 目录下
* @param data 模板需要的数据
* @param response 响应体
*/
public static void exportTemplateMultiList(Map<String, Object> data, String filename, String templatePath, HttpServletResponse response) {
try {
resetResponse(filename, response);
ClassPathResource templateResource = new ClassPathResource(templatePath);
ExcelWriter excelWriter = EasyExcel.write(response.getOutputStream())
.withTemplate(templateResource.getStream())
.autoCloseStream(false)
// 大数值自动转换 防止失真
.registerConverter(new ExcelBigNumberConvert())
.build();
WriteSheet writeSheet = EasyExcel.writerSheet().build();
if (CollUtil.isEmpty(data)) {
throw new IllegalArgumentException("数据为空");
}
for (Map.Entry<String, Object> map : data.entrySet()) {
// 设置列表后续还有数据
FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build();
if (map.getValue() instanceof Collection) {
// 多表导出必须使用 FillWrapper
excelWriter.fill(new FillWrapper(map.getKey(), (Collection<?>) map.getValue()), fillConfig, writeSheet);
} else {
excelWriter.fill(map.getValue(), writeSheet);
}
}
excelWriter.finish();
ServletOutputStream os = response.getOutputStream();
exportTemplateMultiList(data, templatePath, os);
} catch (IOException e) {
throw new RuntimeException("导出Excel异常");
}
}
/**
* 多表多数据模板导出 模板格式为 {key.属性}
*
* @param templatePath 模板路径 resource 目录下的路径包括模板文件名
* 例如: excel/temp.xlsx
* 重点: 模板文件必须放置到启动类对应的 resource 目录下
* @param data 模板需要的数据
* @param os 输出流
*/
public static void exportTemplateMultiList(Map<String, Object> data, String templatePath, OutputStream os) {
ClassPathResource templateResource = new ClassPathResource(templatePath);
ExcelWriter excelWriter = EasyExcel.write(os)
.withTemplate(templateResource.getStream())
.autoCloseStream(false)
// 大数值自动转换 防止失真
.registerConverter(new ExcelBigNumberConvert())
.build();
WriteSheet writeSheet = EasyExcel.writerSheet().build();
if (CollUtil.isEmpty(data)) {
throw new IllegalArgumentException("数据为空");
}
for (Map.Entry<String, Object> map : data.entrySet()) {
// 设置列表后续还有数据
FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build();
if (map.getValue() instanceof Collection) {
// 多表导出必须使用 FillWrapper
excelWriter.fill(new FillWrapper(map.getKey(), (Collection<?>) map.getValue()), fillConfig, writeSheet);
} else {
excelWriter.fill(map.getValue(), writeSheet);
}
}
excelWriter.finish();
}
/**
* 重置响应体
*/

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