1.添加依賴
<!--解決中文顯示問題-->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itext-asian</artifactId>
<version>5.2.0</version>
</dependency>
<!--生成html代碼-->
<dependency>
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>1.11.2</version>
</dependency>
<!--生成pdf-->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.5.13</version>
</dependency>
<!--xml模板-->
<dependency>
<groupId>com.itextpdf.tool</groupId>
<artifactId>xmlworker</artifactId>
<version>5.5.13</version>
</dependency>
2.生成pdf在頁(yè)面預(yù)覽
@RequestMapping("/showPdf")
public void showPdf(HttpServletResponse response){
try {
response.setContentType("application/pdf");
//inline設(shè)置是強(qiáng)制瀏覽器顯示畅蹂，attachment設(shè)置時(shí)強(qiáng)制瀏覽器下載
response.setHeader("Content-Disposition", "inline; filename= file");
// 1.新建document
Document document = new Document();
// 2.建立一個(gè)書寫器(Writer)與document對(duì)象關(guān)聯(lián)站超，通過書寫器(Writer)可以將文檔寫入到磁盤中。
//創(chuàng)建 PdfWriter 對(duì)象 第一個(gè)參數(shù)是對(duì)文檔對(duì)象的引用麦射，第二個(gè)參數(shù)是文件的實(shí)際名稱，在該名稱中還會(huì)給出其輸出路徑。
PdfWriter writer = PdfWriter.getInstance(document, response.getOutputStream());
// 3.打開文檔
document.open();
//要解析的html
//html轉(zhuǎn)換成普通文字,方法如下:
org.jsoup.nodes.Document contentDoc = Jsoup.parseBodyFragment("<h1 align=\"center\">" + "測(cè)試主題"+ "</h1>");
org.jsoup.nodes.Document.OutputSettings outputSettings = new org.jsoup.nodes.Document.OutputSettings();
outputSettings.syntax(org.jsoup.nodes.Document.OutputSettings.Syntax.xml);
contentDoc.outputSettings(outputSettings);
String parsedHtml = contentDoc.outerHtml();
System.out.println(parsedHtml);
//這兒的font-family不支持漢字，{font-family:仿宋} 是不可以的宵凌。
InputStream cssIs = new ByteArrayInputStream("* {font-family: PingFang-SC-Medium.otf;}".getBytes("UTF-8"));
//第四個(gè)參數(shù)是html中的css文件的輸入流
//第五個(gè)參數(shù)是字體提供者，使用系統(tǒng)默認(rèn)支持的字體時(shí)止后，可以不傳瞎惫。
Charset charset = Charset.defaultCharset();
XMLWorkerHelper.getInstance().parseXHtml(writer, document, new ByteArrayInputStream(parsedHtml.getBytes()), null,charset,new FontProviderUtil());
// XMLWorkerHelper.getInstance().parseXHtml(writer, document, new ByteArrayInputStream(parsedHtml.getBytes()));
// 5.關(guān)閉文檔
document.close();
} catch (Exception e) {
e.printStackTrace();
}
}
3.中文顯示問題
重寫XMLWorkerFontProvider類
public class FontProviderUtil extends XMLWorkerFontProvider {
@Override
public Font getFont(final String fontname, final String encoding,
final boolean embedded, final float size, final int style,
final BaseColor color) {
BaseFont bf = null;
try {
bf = BaseFont.createFont("STSongStd-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
} catch (Exception e) {
e.printStackTrace();
}
Font font = new Font(bf, size, style, color);
font.setColor(color);
return font;
}
}
4.替換字符串中的${xxx}特殊字符
重寫mybatis替換占位符的方法去實(shí)現(xiàn)
// 重寫mybatis中解決占位符替換問題
public class VariableTokenHandler implements TokenHandler {
private Map<String, String> variables = new HashMap<>();
public VariableTokenHandler(Map<String, String> variables) {
this.variables = variables;
}
@Override
public String handleToken(String content) {
String value = variables.get(content);
return value ;
}
}
5.調(diào)用
Map<String,String> params = new HashMap<>() ;
params.put("name","zzp") ;
params.put("age","25") ;
String sqlTemplate = "123insert into user(username,age,sequence,${age}) values(${name},${age},${name}.nextval)" ;
VariableTokenHandler handler = new VariableTokenHandler(params);
// 替換sql模板中的${xxx}占位符
GenericTokenParser parser = new GenericTokenParser("${", "}", handler);
String retContent = parser.parse(sqlTemplate);
System.out.println(retContent);
6.問題
生成的富文本xml中,出現(xiàn)替換不了的占位符，可能是占位符不對(duì),如:${name}變成了${name<u></u>}
