Springboot+mybatis+poi輸出報表
阿新 • • 發佈：2019-02-09
在Springboot專案中，結合mybatis訪問資料庫，使用poi將需要的資料整理成報表資料輸出。
一、引入pom檔案依賴
<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.2.RELEASE</version> </parent> <dependencies> <!-- SpringBoot 核心元件 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.1.1</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <!--生成Excel--> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.15</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.15</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>exec-maven-plugin</artifactId> <version>1.5.0</version> <executions> <execution> <goals> <goal>java</goal> </goals> </execution> </executions> <configuration> <mainClass>App</mainClass> <!--啟動類的位置--> </configuration> </plugin> </plugins> </build>
二、在resources下編寫application.yml
spring:
datasource:
url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=false
username : root
password : root
driverClassName : com.mysql.jdbc.Driver
server:
port: 8082三、編寫Mapper層,使用註解開發
User實體類public interface UserMapper{ @Select("select * from user") public List<User> getAll(); }
public class User { private Integer id; private String name; private Integer age; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } }
四、編寫controller類
@Controller
public class ExcelController {
@Autowired
private UserMapper userMapper;
@RequestMapping("/getExcel")
public void getExcel (HttpServletResponse response) throws Exception {
List<User> userList = userMapper.getAll();
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet =wb.createSheet("獲取excel測試表格");
HSSFRow row = null;
row = sheet.createRow(0);
row.setHeight((short)(26.25*20));
row.createCell(0).setCellValue("使用者資訊列表");
row.getCell(0).setCellStyle(getStyle(wb,0));//設定樣式
for(int i = 1;i <= 3;i++){
row.createCell(i).setCellStyle(getStyle(wb,0));
}
CellRangeAddress rowRegion = new CellRangeAddress(0,0,0,3);
sheet.addMergedRegion(rowRegion);
CellRangeAddress columnRegion = new CellRangeAddress(1,4,0,0);
sheet.addMergedRegion(columnRegion);
row = sheet.createRow(1);
row.createCell(0).setCellStyle(getStyle(wb,3));
row.setHeight((short)(22.50*20));
row.createCell(1).setCellValue("使用者Id");
row.createCell(2).setCellValue("使用者名稱");
row.createCell(3).setCellValue("使用者密碼");
for(int i = 1;i <= 3;i++){
row.getCell(i).setCellStyle(getStyle(wb,1));
}
for(int i = 0;i<userList.size();i++){
row = sheet.createRow(i+2);
User user = userList.get(i);
row.createCell(1).setCellValue(user.getId());
row.createCell(2).setCellValue(user.getName());
row.createCell(3).setCellValue(user.getAge());
for(int j = 1;j <= 3;j++){
row.getCell(j).setCellStyle(getStyle(wb,2));
}
}
//預設行高
sheet.setDefaultRowHeight((short)(16.5*20));
//列寬自適應
for(int i=0;i<=13;i++){
sheet.autoSizeColumn(i);
}
response.setContentType("application/vnd.ms-excel;charset=utf-8");
OutputStream os = response.getOutputStream();
wb.write(os);
os.flush();
os.close();
}
/**
* 獲取樣式
* @param hssfWorkbook
* @param styleNum
* @return
*/
public HSSFCellStyle getStyle(HSSFWorkbook hssfWorkbook, Integer styleNum){
HSSFCellStyle style = hssfWorkbook.createCellStyle();
style.setBorderRight(BorderStyle.THIN);//右邊框
style.setBorderBottom(BorderStyle.THIN);//下邊框
HSSFFont font = hssfWorkbook.createFont();
font.setFontName("微軟雅黑");//設定字型為微軟雅黑
HSSFPalette palette = hssfWorkbook.getCustomPalette();//拿到palette顏色板,可以根據需要設定顏色
switch (styleNum){
case(0):{
style.setAlignment(HorizontalAlignment.CENTER_SELECTION);//跨列居中
font.setBold(true);//粗體
font.setFontHeightInPoints((short) 14);//字型大小
style.setFont(font);
palette.setColorAtIndex(HSSFColor.BLUE.index,(byte)184,(byte)204,(byte)228);//替換顏色板中的顏色
style.setFillForegroundColor(HSSFColor.BLUE.index);
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
}
break;
case(1):{
font.setBold(true);//粗體
font.setFontHeightInPoints((short) 11);//字型大小
style.setFont(font);
}
break;
case(2):{
font.setFontHeightInPoints((short)10);
style.setFont(font);
}
break;
case(3):{
style.setFont(font);
palette.setColorAtIndex(HSSFColor.GREEN.index,(byte)0,(byte)32,(byte)96);//替換顏色板中的顏色
style.setFillForegroundColor(HSSFColor.GREEN.index);
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
}
break;
}
return style;
}
}
五、啟動類
@ComponentScan(basePackages = {"cn.iponkan.controller"})
@MapperScan(basePackages = {"cn.iponkan.mapper"})
@EnableAutoConfiguration
public class App{
public static void main(String[] args) {
SpringApplication.run(App.class,args);
}
}六、專案執行結果
