网站建设与数据库管理,福州自适应网站建设,教育咨询,安卓手机做网站服务器吗Java使用IText生成PDF时#xff0c;中文标点符号出现在行首的问题处理 使用itext 5进行html转成pdf时#xff0c;标点符号出现在某一行的开头 但这种情况下显然不符合中文书写的规则#xff0c;主要问题出在itext中的DefaultSplitCharacter类#xff0c;该方法主要用来判断… Java使用IText生成PDF时中文标点符号出现在行首的问题处理 使用itext 5进行html转成pdf时标点符号出现在某一行的开头 但这种情况下显然不符合中文书写的规则主要问题出在itext中的DefaultSplitCharacter类该方法主要用来判断字符是否为可拆分字符。
itext 版本5.5.13
解决办法 1、可以通过修改源码的方式可以参考 如何修改jar包源码以及解决iText生成pdf时中文标点存在行首问题
2、如果不想修改源码也可以在自己项目中创建与itext中DefaultSplitCharacter相同的包路径并在该包下重新DefaultSplitCharacter类,能这样处理的原因与类的加载顺序有关。
package com.itextpdf.text.pdf;import com.itextpdf.text.SplitCharacter;public class DefaultSplitCharacter implements SplitCharacter {/*** An instance of the default SplitCharacter.*/public static final SplitCharacter DEFAULT new DefaultSplitCharacter();// line of text cannot start or end with this characterstatic 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 DOTstatic final char u2022 \u2022; // • - BLACK SMALL CIRCLE (BULLET)static final char uff65 \uff65; // - HALFWIDTH KATAKANA MIDDLE DOTstatic final char u300d \u300d; // 」 - RIGHT CORNER BRACKETstatic final char uff09 \uff09; // - FULLWIDTH RIGHT PARENTHESISstatic final char u0021 \u0021; // ! - EXCLAMATION MARKstatic final char u0025 \u0025; // % - PERCENT SIGNstatic final char u0029 \u0029; // ) - RIGHT PARENTHESISstatic final char u002c \u002c; // , - COMMAstatic final char u002e \u002e; // . - FULL STOPstatic final char u003f \u003f; // ? - QUESTION MARKstatic final char u005d \u005d; // ] - RIGHT SQUARE BRACKETstatic final char u007d \u007d; // } - RIGHT CURLYstatic final char uff61 \uff61; // - HALFWIDTH IDEOGRAPHIC FULL STOPstatic final char uff70 \uff70; // - HALFWIDTH KATAKANA-HIRAGANA PROLONGED SOUND MARKstatic final char uff9e \uff9e; // - HALFWIDTH KATAKANA VOICED SOUND MARKstatic final char uff9f \uff9f; // - HALFWIDTH KATAKANA SEMI-VOICED SOUND MARKstatic final char u3001 \u3001; // 、 - IDEOGRAPHIC COMMAstatic final char u3002 \u3002; // 。 - IDEOGRAPHIC FULL STOPstatic final char uff0c \uff0c; // - FULLWIDTH COMMAstatic final char uff0e \uff0e; // - FULLWIDTH FULL STOPstatic final char uff1a \uff1a; // - FULLWIDTH COLONstatic final char uff1b \uff1b; // - FULLWIDTH SEMICOLONstatic final char uff1f \uff1f; // - FULLWIDTH QUESTION MARKstatic final char uff01 \uff01; // - FULLWIDTH EXCLAMATION MARKstatic final char u309b \u309b; // ゛ - KATAKANA-HIRAGANA VOICED SOUND MARKstatic final char u309c \u309c; // ゜ - KATAKANA-HIRAGANA SEMI-VOICED SOUND MARKstatic final char u30fd \u30fd; // ヽ - KATAKANA ITERATION MARKstatic final char u2019 \u2019; // ’ - RIGHT SINGLE QUOTATION MARKstatic final char u201d \u201d; // ” - RIGHT DOUBLE QUOTATION MARKstatic final char u3015 \u3015; // 〕 - RIGHT TORTOISE SHELL BRACKETstatic final char uff3d \uff3d; // - FULLWIDTH RIGHT SQUARE BRACKETstatic final char uff5d \uff5d; // - FULLWIDTH RIGHT CURLY BRACKETstatic final char u3009 \u3009; // 〉 - RIGHT ANGLE BRACKETstatic final char u300b \u300b; // 》 - RIGHT DOUBLE ANGLE BRACKETstatic final char u300f \u300f; // 』 - RIGHT WHITE CORNER BRACKETstatic final char u3011 \u3011; // 】 - RIGHT BLACK LENTICULAR BRACKETstatic final char u00b0 \u00b0; // ° - DEGREE SIGNstatic final char u2032 \u2032; // ′ - PRIMEstatic final char u2033 \u2033; // ″ - DOUBLE PRIMEstatic 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,u2032, u2033, u2060 };// a line of text cannot end with any following characters in// NOT_ENDING_CHARACTERS[]static final char u0024 \u0024; // $ - DOLLAR SIGNstatic final char u0028 \u0028; // ( - LEFT PARENTHESISstatic final char u005b \u005b; // [ - LEFT SQUARE BRACKETstatic final char u007b \u007b; // { - LEFT CURLY BRACKETstatic final char u00a3 \u00a3; // £ - POUND SIGNstatic final char u00a5 \u00a5; // ¥ - YEN SIGNstatic final char u201c \u201c; // “ - LEFT DOUBLE QUOTATION MARKstatic final char u2018 \u2018; // ‘ - LEFT SINGLE QUOTATION MARKstatic final char u300a \u300a; // 《 - LEFT DOUBLE ANGLE BRACKETstatic final char u3008 \u3008; // 〈 - LEFT ANGLE BRACKETstatic final char u300c \u300c; // 「 - LEFT CORNER BRACKETstatic final char u300e \u300e; // 『 - LEFT WHITE CORNER BRACKETstatic final char u3010 \u3010; // 【 - LEFT BLACK LENTICULAR BRACKETstatic final char u3014 \u3014; // 〔 - LEFT TORTOISE SHELL BRACKETstatic final char uff62 \uff62; // - HALFWIDTH LEFT CORNER BRACKETstatic final char uff08 \uff08; // - FULLWIDTH LEFT PARENTHESISstatic final char uff3b \uff3b; // - FULLWIDTH LEFT SQUARE BRACKETstatic final char uff5b \uff5b; // - FULLWIDTH LEFT CURLY BRACKETstatic final char uffe5 \uffe5; // - FULLWIDTH YEN SIGNstatic final char uff04 \uff04; // - FULLWIDTH DOLLAR SIGNstatic 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 };Overridepublic boolean isSplitCharacter(int start, int current, int end, char[] cc, PdfChunk[] ck) {// Note: If you dont 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 c 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 false;}}}for (char not_ending_character : NOT_ENDING_CHARACTERS) {if (c not_ending_character) {return false;}}if (c || c - || c \u2010) {return true;}if (c 0x2002)return false;return ((c 0x2002 c 0x200b)|| (c 0x2e80 c 0xd7a0)|| (c 0xf900 c 0xfb00)|| (c 0xfe30 c 0xfe50)|| (c 0xff61 c 0xffa0));} catch (Exception ex) {ex.printStackTrace();}return true;}/*** Returns a character int the array (Note: modified from the iText default* version with the addition null check of || ck[Math.min(position, ck.length -* 1)] null.** param position position in the array* param ck chunk array* param cc the character array that has to be checked* return the character*/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]);}
}
