我们需要将生成的PDF文件直接导出到浏览器而不是保存到本地,需要对HttpServletResponse
进行配置,将PDF写入到响应流中。
以下是可以将PDF导出到浏览器进行下载:
我们首先先编写PDF工具类:
package com.scenic.util;
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;
import java.io.IOException;
public class PdfFUtil {
// 最大宽度
private static int maxWidth = 720;
/**------------------------创建表格单元格的方法start----------------------------*/
/**
* 创建单元格(指定字体)
*
* @param value
* @param font
* @return
*/
public static PdfPCell createCell(String value, Font font) {
PdfPCell cell = new PdfPCell();
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
cell.setHorizontalAlignment(Element.ALIGN_CENTER); //水平居中
cell.setPhrase(new Phrase(value, font));
return cell;
}
/**
* 创建单元格(指定字体、设置单元格高度)
*
* @param value
* @param font
* @return 申请事由——这行使用的方法
*/
public static PdfPCell createCell(String value, Font font, float f) {
PdfPCell cell = new PdfPCell();
cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
cell.setHorizontalAlignment(Element.ALIGN_CENTER);
cell.setPhrase(new Phrase(value, font));
cell.setFixedHeight(f); // 设置表格中的单行高度
return cell;
}
/**
* 创建单元格(指定字体、水平局左/中/右)
*
* @param value
* @param font
* @param align
* @return
*/
public static PdfPCell createCell(String value, Font font, int align) {
PdfPCell cell = new PdfPCell();
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
cell.setHorizontalAlignment(align); //水平居中
cell.setPhrase(new Phrase(value, font));
return cell;
}
/**
* 创建单元格(指定字体、水平局左/中/右、单元格跨x列合并)
*
* @param value
* @param font
* @param align
* @param colspan
* @return
*/
public PdfPCell createCell(String value, Font font, int align, int colspan) {
PdfPCell cell = new PdfPCell();
cell.setVerticalAlignment(Element.ALIGN_MIDDLE); //垂直居中
cell.setHorizontalAlignment(align); //水平居中
cell.setColspan(colspan);
cell.setPhrase(new Phrase(value, font));
return cell;
}
/**
* 创建单元格(指定字体、水平居..、单元格跨x列合并、设置单元格内边距)
*
* @param value
* @param font
* @param align
* @param colspan
* @param boderFlag
* @return
*/
public static PdfPCell createCell(String value, Font font, int align, int colspan, boolean boderFlag) {
PdfPCell cell = new PdfPCell();
cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
cell.setHorizontalAlignment(align);
cell.setColspan(colspan);
cell.setPhrase(new Phrase(value, font));
cell.setPadding(3.0f);
if (!boderFlag) {
cell.setBorder(0);
cell.setPaddingTop(10.0f);
cell.setPaddingBottom(7.0f);
} else if (boderFlag) {
cell.setBorder(0);
cell.setPaddingTop(0.0f);
cell.setPaddingBottom(15.0f);
}
return cell;
}
/**
* 创建单元格(指定字体、水平..、边框宽度:0表示无边框、内边距)
*
* @param value
* @param font
* @param align
* @param borderWidth
* @param paddingSize
* @param flag
* @return
*/
public static PdfPCell createCell(String value, Font font, int align, float[] borderWidth, float[] paddingSize, boolean flag) {
PdfPCell cell = new PdfPCell();
cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
cell.setHorizontalAlignment(align);
cell.setPhrase(new Phrase(value, font));
cell.setBorderWidthLeft(borderWidth[0]);
cell.setBorderWidthRight(borderWidth[1]);
cell.setBorderWidthTop(borderWidth[2]);
cell.setBorderWidthBottom(borderWidth[3]);
cell.setPaddingTop(paddingSize[0]);
cell.setPaddingBottom(paddingSize[1]);
if (flag) {
cell.setColspan(2);
}
return cell;
}
/**------------------------创建表格单元格的方法end----------------------------*/
/**--------------------------创建表格的方法start----------------------------*/
/**
* 创建默认列宽,指定列数、水平(居中、右、左)的表格
*
* @param colNumber
* @param align
* @return
*/
public PdfPTable createTable(int colNumber, int align) {
PdfPTable table = new PdfPTable(colNumber);
try {
table.setTotalWidth(maxWidth);
table.setLockedWidth(true);
table.setHorizontalAlignment(align);
table.getDefaultCell().setBorder(1);
} catch (Exception e) {
e.printStackTrace();
}
return table;
}
/**
* 创建指定列宽、列数的表格
*
* @param widths
* @return
*/
public static PdfPTable createTable(float[] widths) {
PdfPTable table = new PdfPTable(widths);
try {
table.setTotalWidth(maxWidth);
table.setLockedWidth(true);
table.setHorizontalAlignment(Element.ALIGN_CENTER);
table.getDefaultCell().setBorder(1);
} catch (Exception e) {
e.printStackTrace();
}
return table;
}
/**
* 创建空白的表格
*
* @return
*/
public PdfPTable createBlankTable() throws IOException, DocumentException {
BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
Font keyfont = new Font(bfChinese, 10, Font.BOLD);
PdfPTable table = new PdfPTable(1);
table.getDefaultCell().setBorder(0);
table.addCell(createCell("", keyfont));
table.setSpacingAfter(20.0f);
table.setSpacingBefore(20.0f);
return table;
}
/**--------------------------创建表格的方法end----------------------------*/
/**
* --------------------------页码方法start----------------------------
*/
public static void onEndPage(PdfWriter writer, Document document) throws IOException, DocumentException {
PdfContentByte cb = writer.getDirectContent();
PdfTemplate tpl; // 页码模板用来固定显示数据
BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
tpl = writer.getDirectContent().createTemplate(100, 100);
cb.saveState();
String text = "第" + writer.getPageNumber() + "页";
cb.beginText();
cb.setFontAndSize(bfChinese, 8);
cb.setTextMatrix(480, 35);//定位“第x页” 在具体的页面调试时候需要更改这xy的坐标
cb.showText(text);
cb.endText();
//** 创建以及固定显示总页数的位置
cb.addTemplate(tpl, 283, 10);//定位“y页” 在具体的页面调试时候需要更改这xy的坐标
cb.stroke();
cb.restoreState();
cb.closePath();
/**--------------------------页码方法end----------------------------*/
}
}
接着我们编写controller层进行实现代码
/**
* 导出pdf格式文档
*
* @return
* @throws Exception
*/
@PostMapping("/pdf")
public void getUser(HttpServletResponse response) throws Exception {
List<ActivityVo> list = activityService.searchActivityByConditions(new ActivityDTO());
long currentTime = System.currentTimeMillis();
int total = list.size();
try {
// 1.新建Document对象
Document document = new Document(PageSize.A4.rotate()); //建立一个Document对象
// 2.建立一个书写器(writer)与document对象关联
PdfWriter writer = PdfWriter.getInstance(document, response.getOutputStream());
// 3.打开文档
document.open();
// 设置响应头信息
response.setContentType("application/pdf");
response.setHeader("Content-Disposition", "attachment;filename=user_" + currentTime + ".pdf");
// 标题
Paragraph paragraph = new Paragraph("用户表", titlefont_16);
paragraph.setAlignment(1); //设置文字居中,0靠左,1居中,2靠右
paragraph.setIndentationLeft(12); //设置左缩进
paragraph.setIndentationRight(12); //设置右缩进
paragraph.setFirstLineIndent(24); //设置首行缩进
paragraph.setLeading(20f); //设置行间距
paragraph.setSpacingBefore(5f); //设置段落上空白
paragraph.setSpacingAfter(10f); //设置段落下空白
document.add(paragraph); //标题
// 表格
PdfPTable table = PdfFUtil.createTable(new float[]{75, 110, 75, 140, 75});
table.addCell(PdfFUtil.createCell("ID", textfont_10));
table.addCell(PdfFUtil.createCell("姓名", textfont_10));
table.addCell(PdfFUtil.createCell("年龄", textfont_10));
table.addCell(PdfFUtil.createCell("住址", textfont_10));
table.addCell(PdfFUtil.createCell("住址2", textfont_10));
for (int i = 0; i < total; i++) {
table.addCell(PdfFUtil.createCell(String.valueOf(list.get(i).getId()), textfont_10));
table.addCell(PdfFUtil.createCell(list.get(i).getActivityName(), textfont_10));
table.addCell(PdfFUtil.createCell(String.valueOf(list.get(i).getActivityInstructions()), textfont_10));
table.addCell(PdfFUtil.createCell(String.valueOf(list.get(i).getActivityAddr()), textfont_10));
table.addCell(PdfFUtil.createCell(String.valueOf(list.get(i).getActivityPerson()), textfont_10));
}
document.add(table);
PdfFUtil.onEndPage(writer, document);
// 5.关闭文档
document.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 全局变量
*/
// 定义全局的字体静态变量
private static Font titlefont_16;
private static Font titlefontnormal_16;
private static Font headfont_14;
private static Font headfontnormal_14;
private static Font headfont_12;
private static Font headfontnormal_12;
private static Font keyfont_10;
private static Font textfont_10;
private static Font underlinefont_10;
// 静态代码块
static {
try {
// 定义字体样式
BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
titlefont_16 = new Font(bfChinese, 16, Font.BOLD);
headfont_14 = new Font(bfChinese, 14, Font.BOLD);
headfont_12 = new Font(bfChinese, 12, Font.BOLD);
keyfont_10 = new Font(bfChinese, 10, Font.BOLD);
titlefontnormal_16 = new Font(bfChinese, 16, Font.NORMAL);
headfontnormal_14 = new Font(bfChinese, 14, Font.NORMAL);
headfontnormal_12 = new Font(bfChinese, 12, Font.NORMAL);
textfont_10 = new Font(bfChinese, 10, Font.NORMAL);
underlinefont_10 = new Font(bfChinese, 10, Font.UNDERLINE);
} catch (Exception e) {
e.printStackTrace();
}
}
到这里基本就可以测试了,我使用的是postman来测试的
然后就到这里就结束了!!
标签:10,java,导出,new,cell,param,table,PDF,Font From: https://www.cnblogs.com/dinopell/p/18293690