Excel导出功能

pom.xml

@@ -28,6 +28,7 @@
         <spring.boot.version>2.0.2.RELEASE</spring.boot.version>
         <fastjson.version>1.2.47</fastjson.version>
         <mysql.version>6.0.6</mysql.version>
+        <poi.version>3.9</poi.version>
         <yzg.version>1.0-SNAPSHOT</yzg.version>
     </properties>
 
@@ -95,6 +96,11 @@
                 <version>${yzg.version}</version>
             </dependency>
 
+            <dependency>
+                <groupId>org.apache.poi</groupId>
+                <artifactId>poi-ooxml</artifactId>
+                <version>${poi.version}</version>
+            </dependency>
         </dependencies>
     </dependencyManagement>
 

yzg-util-cloud/pom.xml

@@ -76,6 +76,12 @@
             <groupId>com.yanzuoguang</groupId>
             <artifactId>yzg-util-base</artifactId>
         </dependency>
+
+        <dependency>
+            <groupId>com.yanzuoguang</groupId>
+            <artifactId>yzg-util-db</artifactId>
+        </dependency>
+
     </dependencies>
 
 </project>
\ No newline at end of file

yzg-util-cloud/src/main/java/com/yanzuoguang/cloud/excel/ExcelHttp.java

+package com.yanzuoguang.cloud.excel;
+
+
+import com.yanzuoguang.cloud.helper.HttpFileHelper;
+import com.yanzuoguang.excel.ExcelConsole;
+import com.yanzuoguang.excel.ExcelRow;
+import com.yanzuoguang.excel.ExportData;
+import com.yanzuoguang.util.helper.StringHelper;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+/**
+ * HTTP方式下载Excel文件
+ *
+ * @param <T> 行数据的类型
+ * @author 颜佐光
+ */
+public class ExcelHttp<T extends Object> extends ExcelConsole<T> {
+
+    /**
+     * 导出成Excel
+     *
+     * @param exportData 导出信息
+     */
+    public ExcelHttp(ExportData exportData) {
+        super(exportData);
+    }
+
+    /**
+     * 导出成Excel
+     *
+     * @param config    导出信息
+     * @param rowHandle 导出下载信息
+     */
+    public ExcelHttp(ExportData config, ExcelRow<T> rowHandle) {
+        super(config, rowHandle);
+    }
+
+    /**
+     * 下载文件
+     *
+     * @param response 输出流
+     */
+    public ExcelHttp down(HttpServletResponse response) throws IOException {
+        return this.down(response, StringHelper.EMPTY);
+    }
+
+    /**
+     * 下载文件
+     *
+     * @param response     输出流
+     * @param downFileName 下载文件名
+     */
+    public ExcelHttp down(HttpServletResponse response, String downFileName) throws IOException {
+        if(StringHelper.isEmpty(downFileName)){
+            downFileName = this.getConfig().getFileName();
+        }
+        HttpFileHelper.localToDown(this.getFileName(),downFileName,response);
+        return this;
+    }
+}

yzg-util-db/pom.xml

@@ -49,5 +49,10 @@
             <artifactId>mysql-connector-java</artifactId>
         </dependency>
 
+        <dependency>
+            <groupId>org.apache.poi</groupId>
+            <artifactId>poi-ooxml</artifactId>
+        </dependency>
+
     </dependencies>
 </project>
\ No newline at end of file

yzg-util-db/src/main/java/com/yanzuoguang/excel/ExcelMergerData.java

+package com.yanzuoguang.excel;
+
+import com.yanzuoguang.util.helper.StringHelper;
+
+/**
+ * 数据合并处理
+ * @author 颜佐光
+ */
+public class ExcelMergerData {
+
+    /**
+     * 上次合并的数据
+     */
+    private String data;
+
+    /**
+     * 合并行号
+     */
+    private int rowIndex = -1;
+
+    /**
+     * 数据合并行数
+     */
+    private int rowCell;
+
+    /**
+     * 写入新数据
+     *
+     * @param rowIndex    行号
+     * @param nowCellData 新数据
+     */
+    public void updateMerger(int rowIndex, String nowCellData) {
+        if (this.rowIndex == -1 || !StringHelper.compare(this.data, nowCellData)) {
+            this.rowIndex = rowIndex;
+            this.data = nowCellData;
+            this.rowCell = 1;
+        } else {
+            this.rowCell++;
+        }
+    }
+
+    /**
+     * 写入数据，并且判断是否需要创建单元格
+     *
+     * @param nowCellData 需要写入的单元格的数据
+     * @return
+     */
+    public boolean isMergerHistory(String nowCellData) {
+        return isMergerHistory() && !StringHelper.compare(this.data, nowCellData);
+    }
+
+    /**
+     * 是否合并单元格
+     *
+     * @return 合并标记
+     */
+    public boolean isMergerHistory() {
+        return rowCell > 1 && rowIndex >= 0;
+    }
+
+    public String getData() {
+        return data;
+    }
+
+    public int getRowIndex() {
+        return rowIndex;
+    }
+
+    public int getRowCell() {
+        return rowCell;
+    }
+}

yzg-util-db/src/main/java/com/yanzuoguang/excel/ExcelRow.java

+package com.yanzuoguang.excel;
+
+/**
+ * 获取行中的某列数据
+ * @param <T>
+ * @author 颜佐光
+ */
+public interface ExcelRow<T> {
+
+    /**
+     * 获取行里面的某列数据
+     *
+     * @param row   　行
+     * @param field 　列
+     * @return
+     */
+    String get(T row, String field);
+}

yzg-util-db/src/main/java/com/yanzuoguang/excel/ExcelRowDefault.java

+package com.yanzuoguang.excel;
+
+
+import com.yanzuoguang.util.base.ObjectHelper;
+
+/**
+ * 行数据默认处理
+ * @author 颜佐光
+ */
+public class ExcelRowDefault implements ExcelRow<Object> {
+
+    /**
+     * 获取行里面的某列数据
+     *
+     * @param row   　行
+     * @param field 　列
+     * @return
+     */
+    @Override
+    public String get(Object row, String field) {
+        return ObjectHelper.getString(row, field);
+    }
+
+    private static ExcelRowDefault my = new ExcelRowDefault();
+
+    /**
+     * 获取默认实例
+     *
+     * @return
+     */
+    public static ExcelRowDefault getInstance() {
+        return my;
+    }
+}

yzg-util-db/src/main/java/com/yanzuoguang/excel/ExportBase.java

+package com.yanzuoguang.excel;
+
+/**
+ * 导出数据
+ * @param <T>
+ * @author 颜佐光
+ */
+public class ExportBase<T extends Object> {
+    /**
+     * 导出格式
+     */
+    private ExportData config;
+    /**
+     * 查询条件
+     */
+    private T cond;
+
+    public ExportData getConfig() {
+        return config;
+    }
+
+    public void setConfig(ExportData config) {
+        this.config = config;
+    }
+
+    public T getCond() {
+        return cond;
+    }
+
+    public void setCond(T cond) {
+        this.cond = cond;
+    }
+}

yzg-util-db/src/main/java/com/yanzuoguang/excel/ExportColumn.java

+package com.yanzuoguang.excel;
+
+/**
+ * 列设置
+ * @author 颜佐光
+ */
+public class ExportColumn {
+
+    /**
+     * 列标题，如 A.B
+     */
+    private String title;
+
+    /**
+     * 数据单元格
+     */
+    private String name;
+
+    /**
+     * 数据是否合并
+     */
+    private boolean merger;
+
+    /**
+     * 高度
+     */
+    private short width;
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public boolean isMerger() {
+        return merger;
+    }
+
+    public void setMerger(boolean merger) {
+        this.merger = merger;
+    }
+
+    public short getWidth() {
+        if(width < 1){
+            return ExportData.COLUMN_WIDTH;
+        }
+        return width;
+    }
+
+    public void setWidth(short width) {
+        this.width = width;
+    }
+}

yzg-util-db/src/main/java/com/yanzuoguang/excel/ExportData.java

+package com.yanzuoguang.excel;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * 订单导出数据
+ *
+ * @author 颜佐光
+ */
+public class ExportData {
+
+    public static final short ROW_HEIGHT_UNIT = 10;
+    public static final short TITLE_HEIGHT = 80;
+    public static final short SUB_TITLE_HEIGHT = 40;
+    public static final short HEAD_HEIGHT = 20;
+    public static final short ROW_HEIGHT = 20;
+    public static final short COLUMN_WIDTH = 120;
+
+    /**
+     * 服务器保存路径
+     */
+    private String serverPath;
+
+    /**
+     * 文件名
+     */
+    private String fileName;
+
+    /**
+     * 标题
+     */
+    private String title;
+
+    /**
+     * 标题高度
+     */
+    private short titleHeight;
+
+    /**
+     * 子标题
+     */
+    private String subTitle;
+
+    /**
+     * 子标题高度
+     */
+    private short subTitleHeight;
+
+    /**
+     * 列标题高度
+     */
+    private short headHeight;
+
+    /**
+     * 行高度
+     */
+    private short rowHeight;
+
+    /**
+     * 包含列
+     */
+    private List<ExportColumn> columns = new ArrayList<>();
+
+    public String getServerPath() {
+        return serverPath;
+    }
+
+    public void setServerPath(String serverPath) {
+        this.serverPath = serverPath;
+    }
+
+    public String getFileName() {
+        return fileName;
+    }
+
+    public void setFileName(String fileName) {
+        this.fileName = fileName;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public short getTitleHeight() {
+        if (titleHeight < 1) {
+            return TITLE_HEIGHT;
+        }
+        return titleHeight;
+    }
+
+    public void setTitleHeight(short titleHeight) {
+        this.titleHeight = titleHeight;
+    }
+
+    public String getSubTitle() {
+        return subTitle;
+    }
+
+    public void setSubTitle(String subTitle) {
+        this.subTitle = subTitle;
+    }
+
+    public short getSubTitleHeight() {
+        if (subTitleHeight < 1) {
+            return SUB_TITLE_HEIGHT;
+        }
+        return subTitleHeight;
+    }
+
+    public void setSubTitleHeight(short subTitleHeight) {
+        this.subTitleHeight = subTitleHeight;
+    }
+
+    public short getHeadHeight() {
+        if (headHeight < 1) {
+            return HEAD_HEIGHT;
+        }
+        return headHeight;
+    }
+
+    public void setHeadHeight(short headHeight) {
+        this.headHeight = headHeight;
+    }
+
+    public short getRowHeight() {
+        if (rowHeight < 1) {
+            return ROW_HEIGHT;
+        }
+        return rowHeight;
+    }
+
+    public void setRowHeight(short rowHeight) {
+        this.rowHeight = rowHeight;
+    }
+
+    public List<ExportColumn> getColumns() {
+        return columns;
+    }
+
+    public void setColumns(List<ExportColumn> columns) {
+        this.columns = columns;
+    }
+}