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Support for XSSFWorkbook and SXSSFWorkbook (xmlx format; POI 3.9+)

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Introduces an AbstractXlsView and dedicated subclasses for POI's xmlx support.
Deprecates the traditional AbstractExcelView which is based on pre POI 3.5 API.

Issue: SPR-6898
This commit is contained in:
Juergen Hoeller
2015-03-23 20:01:05 +01:00
parent e2110e353e
commit 76cf5beb59
7 changed files with 367 additions and 17 deletions
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9
spring-webmvc/src/main/java/org/springframework/web/servlet/view/document/AbstractExcelView.java
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@@ -26,7 +26,6 @@ import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.LocalizedResourceHelper;
@@ -92,7 +91,10 @@ import org.springframework.web.servlet.view.AbstractView;
* @author Jean-Pierre Pawlak
* @author Juergen Hoeller
* @see AbstractPdfView
* @deprecated as of Spring 4.2, in favor of {@link AbstractXlsView} and its
* {@link AbstractXlsxView} and {@link AbstractXlsxStreamingView} variants
*/
@Deprecated
public abstract class AbstractExcelView extends AbstractView {
/** The content type for an Excel response */
@@ -172,8 +174,7 @@ public abstract class AbstractExcelView extends AbstractView {
if (logger.isDebugEnabled()) {
logger.debug("Loading Excel workbook from " + inputFile);
}
POIFSFileSystem fs = new POIFSFileSystem(inputFile.getInputStream());
return new HSSFWorkbook(fs);
return new HSSFWorkbook(inputFile.getInputStream());
}
/**
@@ -194,7 +195,7 @@ public abstract class AbstractExcelView extends AbstractView {
* <p>Creates the row and the cell if they still doesn't already exist.
* Thus, the column can be passed as an int, the method making the needed downcasts.
* @param sheet a sheet object. The first sheet is usually obtained by workbook.getSheetAt(0)
* @param row thr row number
* @param row the row number
* @param col the column number
* @return the HSSFCell
*/

121
spring-webmvc/src/main/java/org/springframework/web/servlet/view/document/AbstractXlsView.java Normal file
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@@ -0,0 +1,121 @@
/*
* Copyright 2002-2015 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.servlet.view.document;
import java.io.Closeable;
import java.io.IOException;
import java.util.Map;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.web.servlet.view.AbstractView;
/**
* Convenient superclass for Excel document views in traditional XLS format.
* Compatible with Apache POI 3.5 and higher.
*
* <p>For working with the workbook in the subclass, see
* <a href="http://poi.apache.org">Apache's POI site</a>
*
* @author Juergen Hoeller
* @since 4.2
*/
public abstract class AbstractXlsView extends AbstractView {
/**
* Default Constructor.
* Sets the content type of the view to "application/vnd.ms-excel".
*/
public AbstractXlsView() {
setContentType("application/vnd.ms-excel");
}
@Override
protected boolean generatesDownloadContent() {
return true;
}
/**
* Renders the Excel view, given the specified model.
*/
@Override
protected final void renderMergedOutputModel(
Map<String, Object> model, HttpServletRequest request, HttpServletResponse response) throws Exception {
// Create a fresh workbook instance for this render step.
Workbook workbook = createWorkbook(model, request);
// Delegate to application-provided document code.
buildExcelDocument(model, workbook, request, response);
// Set the content type.
response.setContentType(getContentType());
// Flush byte array to servlet output stream.
renderWorkbook(workbook, response);;
}
/**
* Template method for creating the POI {@link Workbook} instance.
* <p>The default implementation creates a traditional {@link HSSFWorkbook}.
* Spring-provided subclasses are overriding this for the OOXML-based variants;
* custom subclasses may override this for reading a workbook from a file.
* @param model the model Map
* @param request current HTTP request (for taking the URL or headers into account)
* @return the new {@link Workbook} instance
*/
protected Workbook createWorkbook(Map<String, Object> model, HttpServletRequest request) {
return new HSSFWorkbook();
}
/**
* The actual render step: taking the POI {@link Workbook} and rendering
* it to the given response.
* @param workbook the POI Workbook to render
* @param response current HTTP response
* @throws IOException when thrown by I/O methods that we're delegating to
*/
protected void renderWorkbook(Workbook workbook, HttpServletResponse response) throws IOException {
ServletOutputStream out = response.getOutputStream();
workbook.write(out);
out.flush();
// Closeable only implemented as of POI 3.10
if (workbook instanceof Closeable) {
((Closeable) workbook).close();
}
}
/**
* Application-provided subclasses must implement this method to populate
* the Excel workbook document, given the model.
* @param model the model Map
* @param workbook the Excel workbook to populate
* @param request in case we need locale etc. Shouldn't look at attributes.
* @param response in case we need to set cookies. Shouldn't write to it.
*/
protected abstract void buildExcelDocument(
Map<String, Object> model, Workbook workbook, HttpServletRequest request, HttpServletResponse response)
throws Exception;
}

59
spring-webmvc/src/main/java/org/springframework/web/servlet/view/document/AbstractXlsxStreamingView.java Normal file
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@@ -0,0 +1,59 @@
/*
* Copyright 2002-2015 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.servlet.view.document;
import java.io.IOException;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
/**
* Convenient superclass for Excel document views in the Office 2007 XLSX format,
* using POI's streaming variant. Compatible with Apache POI 3.9 and higher.
*
* <p>For working with the workbook in the subclass, see
* <a href="http://poi.apache.org">Apache's POI site</a>
*
* @author Juergen Hoeller
* @since 4.2
*/
public abstract class AbstractXlsxStreamingView extends AbstractXlsxView {
/**
* This implementation creates a {@link SXSSFWorkbook} for streaming the XLSX format.
*/
@Override
protected SXSSFWorkbook createWorkbook(Map<String, Object> model, HttpServletRequest request) {
return new SXSSFWorkbook();
}
/**
* This implementation disposes the {@link SXSSFWorkbook} when done with rendering.
* @see org.apache.poi.xssf.streaming.SXSSFWorkbook#dispose()
*/
@Override
protected void renderWorkbook(Workbook workbook, HttpServletResponse response) throws IOException {
super.renderWorkbook(workbook, response);
// Dispose temporary files in case of streaming variant...
((SXSSFWorkbook) workbook).dispose();
}
}

54
spring-webmvc/src/main/java/org/springframework/web/servlet/view/document/AbstractXlsxView.java Normal file
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@@ -0,0 +1,54 @@
/*
* Copyright 2002-2015 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.servlet.view.document;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
/**
* Convenient superclass for Excel document views in the Office 2007 XLSX format
* (as supported by POI-OOXML). Compatible with Apache POI 3.5 and higher.
*
* <p>For working with the workbook in the subclass, see
* <a href="http://poi.apache.org">Apache's POI site</a>
*
* @author Juergen Hoeller
* @since 4.2
*/
public abstract class AbstractXlsxView extends AbstractXlsView {
/**
* Default Constructor.
* Sets the content type of the view to
* "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet".
*/
public AbstractXlsxView() {
setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
}
/**
* This implementation creates an {@link XSSFWorkbook} for the XLSX format.
*/
@Override
protected Workbook createWorkbook(Map<String, Object> model, HttpServletRequest request) {
return new XSSFWorkbook();
}
}