SpringMvc下载文件

使用springmvn文件上传

添加pom依赖

            commons-fileupload
            commons-fileupload
            1.3.2
        

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配置springmvc-servlet.xml

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form表单

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控制器

@RequestMapping("/upload")
public String fileupload(String name,MultipartFile file) {
System.out.println("name:" + name);
System.out.println("OriginalFileName:" + file.getOriginalFilename());
System.out.println("size" + file.getSize());
if(!file.isEmpty()) {
InputStream inputStream = file.getInputStream();
//后面的该会了吧
}
return "";
}

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导入excel

二、快速入门

2.1 引入maven依赖

    com.xuxueli
    xxl-excel
    1.0.0

2.2 定义Java对象

@ExcelSheet(name = "商户列表", headColor = HSSFColor.HSSFColorPredefined.LIGHT_GREEN)
public class ShopDTO {

    @ExcelField(name = "商户ID")
    private int shopId;

    @ExcelField(name = "商户名称")
    private String shopName;

    public ShopDTO() {
    }

    public ShopDTO(int shopId, String shopName) {
        this.shopId = shopId;
        this.shopName = shopName;
    }

    public int getShopId() {
        return shopId;
    }

    public void setShopId(int shopId) {
        this.shopId = shopId;
    }

    public String getShopName() {
        return shopName;
    }

    public void setShopName(String shopName) {
        this.shopName = shopName;
    }

}

2.3 Excel导出：Object 转换为 Excel

控制器

/**
 * @author Wgs
 * @version 1.0
 * @create：2017/11/14
 */
@Controller
public class UploadController {
    @PostMapping("/user/upload")
    public String fileupload(String name, MultipartFile file) throws IOException {
        System.out.println("name:" + name);
        System.out.println("OriginalFileName:" + file.getOriginalFilename());
        System.out.println("size" + file.getSize());
        List