itext5中⾸⾏出现标点符号和页脚页码显⽰的解决⽅案
做项⽬中需要动态的⽣成pdf⽂档，使⽤的是java代码⽣成的⽅法，在这过程中，发现了标点符号出现在⾸⾏的问题，和页码没有显⽰的问题，我把这两个问题放在同⼀个类⾥⾯解决了。
⼀、标点符号出现在⾸⾏的问题
1. 第⼀步写⼀个该类实现SplitCharacter
casu marzu
import com.itextpdf.awt.AsianFontMapper;
import *;
import pdf.*;
import java.io.IOException;
/**
* 该⽅法仅对中⽂的标点符号有效
* 继承 extends PdfPageEventHelper是为了解决页码显⽰的问题
* implements SplitCharacter 实现该⽅法时为了解决中⽂标点符号出现在⾸⾏的问题
26个英文字母大小写
*/
public class ChineSplitUtils extends PdfPageEventHelper implements SplitCharacter {
// line of text cannot start or end with this character
static final char u2060 ='\u2060';// - ZERO WIDTH NO BREAK SPACE
// a line of text cannot start with any following characters in NOT_BEGIN_CHARACTERS[]
static final char u30fb ='\u30fb';// · - KATAKANA MIDDLE DOT
static final char u2022 ='\u2022';// • - BLACK SMALL CIRCLE (BULLET)
static final char uff65 ='\uff65';// - HALFWIDTH KATAKANA MIDDLE DOT
static final char u300d ='\u300d';// 」 - RIGHT CORNER BRACKET
static final char uff09 ='\uff09';// ） - FULLWIDTH RIGHT PARENTHESIS
static final char u0021 ='\u0021';// ! - EXCLAMATION MARK
static final char u0025 ='\u0025';// % - PERCENT SIGNhello attle
static final char u0029 ='\u0029';// ) - RIGHT PARENTHESIS
static final char u002c ='\u002c';// , - COMMA
static final char u002e ='\u002e';// . - FULL STOP
static final char u003f ='\u003f';// ? - QUESTION MARK
static final char u005d ='\u005d';// ] - RIGHT SQUARE BRACKET
static final char u007d ='\u007d';// } - RIGHT CURLY BRACKET
static final char uff61 ='\uff61';// ｡ - HALFWIDTH IDEOGRAPHIC FULL STOP
static final char uff70 ='\uff70';// - HALFWIDTH KATAKANA-HIRAGANA PROLONGED SOUND MARK
static final char uff9e ='\uff9e';// - HALFWIDTH KATAKANA VOICED SOUND MARK
static final char uff9f ='\uff9f';// - HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK
static final char u3001 ='\u3001';// 、 - IDEOGRAPHIC COMMA
static final char u3002 ='\u3002';// 。 - IDEOGRAPHIC FULL STOP
static final char uff0c ='\uff0c';// ， - FULLWIDTH COMMA
static final char uff0e ='\uff0e';// ． - FULLWIDTH FULL STOP
static final char uff1a ='\uff1a';// ： - FULLWIDTH COLON
static final char uff1b ='\uff1b';// ； - FULLWIDTH SEMICOLON
更新英语static final char uff1f ='\uff1f';// ？ - FULLWIDTH QUESTION MARK
static final char uff01 ='\uff01';// ！ - FULLWIDTH EXCLAMATION MARK
static final char u309b ='\u309b';// ゛ - KATAKANA-HIRAGANA VOICED SOUND MARK
static final char u309c ='\u309c';// ゜ - KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
static final char u30fd ='\u30fd';// ヽ - KATAKANA ITERATION MARK
static final char u2019 ='\u2019';// ’ - RIGHT SINGLE QUOTATION MARK
static final char u201d ='\u201d';// ” - RIGHT DOUBLE QUOTATION MARK
static final char u3015 ='\u3015';// 〕 - RIGHT TORTOISE SHELL BRACKET
static final char uff3d ='\uff3d';// ］ - FULLWIDTH RIGHT SQUARE BRACKET
static final char uff5d ='\uff5d';// ｝ - FULLWIDTH RIGHT CURLY BRACKET
static final char u3009 ='\u3009';// 〉 - RIGHT ANGLE BRACKET5个元音字母
static final char u300b ='\u300b';// 》 - RIGHT DOUBLE ANGLE BRACKET
static final char u300f ='\u300f';// 』 - RIGHT WHITE CORNER BRACKET
static final char u3011 ='\u3011';// 】 - RIGHT BLACK LENTICULAR BRACKET
static final char u3011 ='\u3011';// 】 - RIGHT BLACK LENTICULAR BRACKET
static final char u00b0 ='\u00b0';// ° - DEGREE SIGN
static final char u2032 ='\u2032';// ′ - PRIME
static final char u2033 ='\u2033';// ″ - DOUBLE PRIME
static final char[] NOT_BEGIN_CHARACTERS =new char[]{u30fb, u2022, uff65, u300d, uff09, u0021, u0025, u0029, u002c,
u002e, u003f, u005d, u007d, uff61,
uff70, uff9e, uff9f, u3001, u3002, uff0c, uff0e, uff1a, uff1b, uff1f, uff01, u309b, u309c, u30fd,
u2019, u201d, u3015, uff3d, uff5d, u3009, u300b, u300f, u3011, u00b0,
澳洲大学排名u2032, u2033, u2060};
// a line of text cannot end with any following characters in NOT_ENDING_CHARACTERS[]
static final char u0024 ='\u0024';// $ - DOLLAR SIGN
static final char u0028 ='\u0028';// ( - LEFT PARENTHESIS
static final char u005b ='\u005b';// [ - LEFT SQUARE BRACKET
static final char u007b ='\u007b';// { - LEFT CURLY BRACKET
static final char u00a3 ='\u00a3';// £ - POUND SIGN
static final char u00a5 ='\u00a5';// ¥ - YEN SIGN
static final char u201c ='\u201c';// “ - LEFT DOUBLE QUOTATION MARK
static final char u2018 ='\u2018';// ‘ - LEFT SINGLE QUOTATION MARK
static final char u300a ='\u300a';// 《 - LEFT DOUBLE ANGLE BRACKET
static final char u3008 ='\u3008';// 〈 - LEFT ANGLE BRACKET
static final char u300c ='\u300c';// 「 - LEFT CORNER BRACKET
static final char u300e ='\u300e';// 『 - LEFT WHITE CORNER BRACKET
static final char u3010 ='\u3010';// 【 - LEFT BLACK LENTICULAR BRACKET
static final char u3014 ='\u3014';// 〔 - LEFT TORTOISE SHELL BRACKET
static final char uff62 ='\uff62';// - HALFWIDTH LEFT CORNER BRACKET
static final char uff08 ='\uff08';// （ - FULLWIDTH LEFT PARENTHESIS
static final char uff3b ='\uff3b';// ［ - FULLWIDTH LEFT SQUARE BRACKET英国留学一年的费用
2015广东高考英语static final char uff5b ='\uff5b';// ｛ - FULLWIDTH LEFT CURLY BRACKET
static final char uffe5 ='\uffe5';// ￥ - FULLWIDTH YEN SIGN
static final char uff04 ='\uff04';// ＄ - FULLWIDTH DOLLAR SIGN
static final char[] NOT_ENDING_CHARACTERS =new char[]{u0024, u0028, u005b, u007b, u00a3, u00a5, u201c, u2018, u3008, u300a, u300c, u300e, u3010, u3014, uff62, uff08, uff3b, uff5b, uffe5, uff04, u2060};
private static final SplitCharacter defaultSplitCharacter =new DefaultSplitCharacter();
public boolean isSplitCharacter(int start,int current,int end,char[] cc, PdfChunk[] ck){
// Note: If you don't add an try/catch and there is an issue with isSplitCharacter(), iText silently fails and
// you have no idea there was a problem.
try{
char charCurrent =getCharacter(current, cc, ck);
int next = current +1;
if(next < cc.length){
char charNext =getCharacter(next, cc, ck);
for(char not_begin_character : NOT_BEGIN_CHARACTERS){
if(charNext == not_begin_character){
return fal;
}
}
}
for(char not_ending_character : NOT_ENDING_CHARACTERS){
if(charCurrent == not_ending_character){
return fal;
}
}
boolean isBasicLatin = Character.UnicodeBlock.of(charCurrent)== Character.UnicodeBlock.BASIC_LATIN;
if(isBasicLatin)
if(isBasicLatin)
return defaultSplitCharacter.isSplitCharacter(start, current, end, cc, ck);
return true;
}catch(Exception ex){
ex.printStackTrace();
}
return true;
flag是什么意思
}
protected char getCharacter(int position,char[] cc, PdfChunk[] ck){
if(ck == null || ck[Math.min(position, ck.length -1)]== null){
return cc[position];
}
return(char) ck[Math.min(position, ck.length -1)].getUnicodeEquivalent(cc[position]);
}
}
2、第⼆步
因为只有Chunk类型中的⽅法才适⽤，适⽤的⽅法是
ChineSplitUtils chineSplitUtils =new ChineSplitUtils();
Paragraph paragraph =new Paragraph("",fontChina18);
Chunk chunk1 =new Chunk("测试标点符号中⽂出现在⾸⾏啊啊啊啊啊啊啊啊啊，啊",fontChina18);
chunk1.tSplitCharacter(chineSplitUtils);
paragraph.add(chunk1);
⼆、页码显⽰的问题
1. 在该类中重写onEndPage的⽅法
/
**
* 页码显⽰的设置，只是Document写完⼀个页⾯会调⽤的⽅法
*/
@Override
public void onEndPage(PdfWriter writer, Document doc){
BaFont bfChine = null;
try{
bfChine = ateFont(AsianFontMapper.ChineSimplifiedFont, AsianFontMapper.ChineSimplifiedEncoding_H, BaFont.NOT_EM BEDDED);
}catch(DocumentException e){
e.printStackTrace();
}catch(IOException e){
e.printStackTrace();
}
Font fontChina18 =new Font(bfChine,18);
//添加标题⽂本
StringBuffer underline =new StringBuffer();
for(int i =0;i<116;i++){
underline.append("_");
}
Phra pageNumberPh =new Phra(String.PageNumber()),fontChina18);
float center = PageSize().getRight()/2;//页⾯的⽔平中点
float top = PageSize().getTop()-36;
float bottom = PageSize().getBottom()+36;
/** 参数xy是指⽂本显⽰的页⾯上的哪个店。alignment指⽂本在坐标点的对齐⽅式 */
ColumnText.DirectContent(),Element.ALIGN_CENTER,pageNumberPh,center,bottom,0);//页码
}
重写了改⽅法之后会显⽰页码了，显⽰的只是当前的页码，没有总页码的显⽰。
2、在写模板的⽅法中使⽤
spockPdfWriter writer = Instance(document, OutputStream()); ChineSplitUtils pdfHeaderFooter =new ChineSplitUtils();
writer.tPageEvent(pdfHeaderFooter);
这样就有页码⽣成了。
