SpringMVC自定义视图 Excel视图和PDF视图

一、自定义视图-Excel视图

1、Maven依赖 引入POI

        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.11</version>
        </dependency>

2、自定义视图解析器

import java.io.OutputStream;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFDataFormat;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.springframework.web.servlet.view.document.AbstractExcelView;

import com.cn21.calendar.spider.test.User;

public class ViewExcel extends AbstractExcelView {

    @SuppressWarnings("unchecked")
    @Override
    protected void buildExcelDocument(Map<String, Object> model, HSSFWorkbook workbook, HttpServletRequest request,
            HttpServletResponse response) throws Exception {

        String fileName = "用户列表excel.xls";
        response.setCharacterEncoding("UTF-8");
        response.setContentType("application/ms-excel");
        response.setHeader("Content-Disposition", "inline; filename="+new String(fileName.getBytes(),"iso8859-1"));
        OutputStream outputStream = response.getOutputStream();

        List<User> userList = (List<User>) model.get("userList");
        // 产生Excel表头
        HSSFSheet sheet = workbook.createSheet("基本信息");
        HSSFRow header = sheet.createRow(0);
        // 产生标题列
        header.createCell(0).setCellValue("ID");
        header.createCell(1).setCellValue("名字");
        header.createCell(2).setCellValue("邮箱");
        header.createCell(3).setCellValue("密码");
        HSSFCellStyle cellStyle = workbook.createCellStyle();
        cellStyle.setDataFormat(HSSFDataFormat.getBuiltinFormat("mm/dd/yyyy"));
        int rowNumber = 1;
        for (User user : userList) {
            HSSFRow row = sheet.createRow(rowNumber++);
            // 产生标题列
            row.createCell(0).setCellValue(user.getId());
            row.createCell(1).setCellValue(user.getName());
            row.createCell(2).setCellValue(user.getEmail());
            row.createCell(3).setCellValue(user.getPassword());
        }
        workbook.write(outputStream);
        outputStream.flush();
        outputStream.close();
    }
}

3、视图映射配置dispather-servlet.xml

　　<!-- 通过order属性来定义视图解析器的优先级，order的值越小优先级越低 -->
    <bean class="org.springframework.web.servlet.view.BeanNameViewResolver">
        <property name="order" value="0"></property>
    </bean>

四、控制器代码示例

    @RequestMapping(value = "excel")
    public ModelAndView viewExcel() {
        Map<String, Object> model = new HashMap<>();
        model.put("userList", getStudents());
        return new ModelAndView(new ViewExcel(), model);
    }
    private List<User> getStudents() {
        List<User> userList = new ArrayList<>();
        User user = new User("1", "Tome", "Tom@qq.com", "123456");
        userList.add(user);
        return userList;
    }

五、测试结果

二、PDF视图

1、Maven依赖包引入

        <dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>itext-asian</artifactId>
            <version>5.1.0</version>
        </dependency>
        <dependency>
           <groupId>com.lowagie</groupId>
           <artifactId>itext</artifactId>
           <version>2.1.7</version>
        </dependency>  

2、自定义视图解析器

import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.view.document.AbstractPdfView;

import com.cn21.calendar.spider.test.User;
import com.lowagie.text.Document;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfWriter;

public class ViewPDF extends AbstractPdfView {

    @SuppressWarnings("unchecked")
    @Override
    protected void buildPdfDocument(Map<String, Object> model, Document document, PdfWriter writer,
            HttpServletRequest request, HttpServletResponse response) throws Exception {
        String fileName = "用户信息.pdf"; // 设置response方式,使执行此controller时候自动出现下载页面,而非直接使用excel打开
        response.setCharacterEncoding("UTF-8");
        response.setContentType("application/octet-stream");
        response.setHeader("Content-Disposition",
                "attachment; filename=" + new String(fileName.getBytes(), "iso8859-1"));
        List<User> userList = (List<User>) model.get("userList");
        BaseFont bfChinese = BaseFont.createFont("C://Windows//Fonts//simfang.ttf", BaseFont.IDENTITY_H,
                BaseFont.NOT_EMBEDDED);

        com.lowagie.text.Font FontChinese = new com.lowagie.text.Font(bfChinese, 12, com.lowagie.text.Font.NORMAL);

        for (int i = 0; i < userList.size(); i++) {
            User user = userList.get(i);
            String value = "ID: " + user.getId() + "姓名: " + user.getName() + ",邮箱: " + user.getEmail() + ",密码: "
                    + user.getPassword();
            document.add(new Paragraph(value, FontChinese));
        }
    }
}

3、视图映射配置dispather-servlet.xml

    <!-- 通过order属性来定义视图解析器的优先级，order的值越小优先级越低 -->
    <bean class="org.springframework.web.servlet.view.BeanNameViewResolver">
        <property name="order" value="0"></property>
    </bean>

4、控制器代码示例

    @RequestMapping("pdf")
    public ModelAndView viewPDF(){
        Map<String, Object> model = new HashMap<>();
        model.put("userList", getStudents());
        return new ModelAndView(new ViewPDF(), model);
    }  

    private List<User> getStudents() {
        List<User> userList = new ArrayList<>();
        User user = new User("1", "Tome", "Tom@qq.com", "123456");
        userList.add(user);
        return userList;
    }

五、测试结果