Java:比较,标记和解释Java中的HTML文本
We *_*org 11 html java string string-comparison
我正在开发一个Java项目,其中有一个HTML编辑器,用户可以在html编辑器(ckeditor)中输入文本,实际的HTML文本保存在数据库中.
现在,当用户下次再来,并编辑相同的文本时,我想通过比较它与数据库来显示两者之间的差异.
我面临的最重要的问题是,即使任何比较器工具知道Italic的样式已经变为Bold,比较器的输出也strike-throughs就是单词Italic和节目Bold插入代替它.
但这并不能解释实际编辑的意图或行动.意图/行动是用户从Italic到Bold.我正在寻找的是一个工具,它不是显示Italic这个词被删除而Bold被添加而不是代替那个,它会向我显示Italic首先是删除的Bold 单词/句子以及用单词/句子替换.
我希望我的意思很明确.我一直在努力实现这一目标.我试过diff_match_patch,daisydiff等,没有任何帮助.
我的试验:
/*
String oldTextHtml = mnotes1.getMnotetext();
String newTextHTML = mnotes.getMnotetext();
oldTextHtml = oldTextHtml.replace("<br>","\n");
oldTextHtml = Jsoup.clean(oldTextHtml, Whitelist.basic());
oldTextHtml = Jsoup.parse(oldTextHtml).text();
newTextHTML = newTextHTML.replace("<br>","\n");
newTextHTML = Jsoup.clean(newTextHTML,Whitelist.basic());
newTextHTML = Jsoup.parse(newTextHTML).text();
diff_match_patch diffMatchPatch = new diff_match_patch();
LinkedList<diff_match_patch.Diff> deltas = diffMatchPatch.diff_main(oldTextHtml, newTextHTML);
diffMatchPatch.diff_cleanupSemantic(deltas);
newText += diffMatchPatch.diff_prettyHtml(deltas);
groupNoteHistory.setWhatHasChanged("textchange");
groupNoteHistory.setNewNoteText(newText);
noEdit = true;
*/
List<String> oldTextList = Arrays.asList(mnotes1.getMnotetext().split("(\\.|\\n)"));
List<String> newTextList = Arrays.asList(mnotes.getMnotetext().split("(\\.|\\n)"));
if (oldTextList.size() == newTextList.size()) {
for (int current = 0; current < oldTextList.size(); current++) {
if (isLineDifferent(oldTextList.get(current), newTextList.get(current))) {
noEdit = true;
diff_match_patch diffMatchPatch = new diff_match_patch();
LinkedList<diff_match_patch.Diff> deltas = diffMatchPatch.diff_main(oldTextList.get(current), newTextList.get(current));
diffMatchPatch.diff_cleanupSemantic(deltas);
newText += diffMatchPatch.diff_prettyHtml(deltas);
groupNoteHistory.setWhatHasChanged("textchange");
groupNoteHistory.setNewNoteText(newText);
}
}
} else {
if (!(mnotes.getMnotetext().equals(mnotes1.getMnotetext()))) {
if (isLineDifferent(mnotes1.getMnotetext(), mnotes.getMnotetext())) {
diff_match_patch diffMatchPatch = new diff_match_patch();
LinkedList<diff_match_patch.Diff> deltas = diffMatchPatch.diff_main(mnotes1.getMnotetext(),
mnotes.getMnotetext());
diffMatchPatch.diff_cleanupSemantic(deltas);
newText += diffMatchPatch.diff_prettyHtml(deltas);
groupNoteHistory.setWhatHasChanged("textchange");
noEdit = true;
}
groupNoteHistory.setNewNoteText(newText);
groupNoteHistory.setWhatHasChanged("textchange");
}
}
如果有人知道我怎么能做到这一点,请告诉我.非常感谢.:-)
编辑
我被要求提供一张照片.说明然后是图像.
Old text : <style= bold>Hello</style>
new Text : <style = Italic>Hello</style>
差异输出预期:
最近，我对一个开源库进行了概念探索，该库在 java 上实现了 diff 命令以及许多其他功能。
\n\n基本上我比较了两个java文件并获取它们之间修改的行，有了这些信息我认为很容易实现你想要的。
\n\nsrc/test/resources/files基本上我的文件夹下有两个java文件
文件1
\n\npackage com.onuba.car.javadiff;\n\nimport difflib.Chunk;\nimport difflib.Delta;\nimport difflib.DiffUtils;\nimport difflib.Patch;\n\nimport java.io.BufferedReader;\nimport java.io.File;\nimport java.io.FileReader;\nimport java.io.IOException;\nimport java.util.ArrayList;\nimport java.util.List;\n\npublic class FileComparator {\n\n private final File original;\n\n private final File revised;\n\n public FileComparator(File original, File revised) {\n this.original = original;\n this.revised = revised;\n }\n\n public List<Chunk> getChangesFromOriginal() throws IOException {\n return getChunksByType(Delta.TYPE.CHANGE);\n }\n\n public List<Chunk> getInsertsFromOriginal() throws IOException {\n return getChunksByType(Delta.TYPE.INSERT);\n }\n\n public List<Chunk> getDeletesFromOriginal() throws IOException {\n return getChunksByType(Delta.TYPE.DELETE);\n }\n\n private List<Chunk> getChunksByType(Delta.TYPE type) throws IOException {\n final List<Chunk> listOfChanges = new ArrayList<Chunk>();\n final List<Delta> deltas = getDeltas();\n for (Delta delta : deltas) {\n if (delta.getType() == type) {\n listOfChanges.add(delta.getRevised());\n }\n }\n return listOfChanges;\n }\n\n private List<Delta> getDeltas() throws IOException {\n\n final List<String> originalFileLines = fileToLines(original);\n final List<String> revisedFileLines = fileToLines(revised);\n\n final Patch patch = DiffUtils.diff(originalFileLines, revisedFileLines);\n\n return patch.getDeltas();\n }\n\n private List<String> fileToLines(File file) throws IOException {\n final List<String> lines = new ArrayList<String>();\n String line;\n final BufferedReader in = new BufferedReader(new FileReader(file));\n while ((line = in.readLine()) != null) {\n lines.add(line);\n }\n\n return lines;\n }\n\n <style= bold>Hello</style>\n\n}\n文件2
\n\npackage com.onuba.car.javadiff;\n\nimport difflib.Chunk;\nimport difflib.Delta;\nimport difflib.DiffUtils;\nimport difflib.Patch;\n\nimport java.io.BufferedReader;\nimport java.io.File;\nimport java.io.FileReader;\nimport java.io.IOException;\nimport java.util.ArrayList;\nimport java.util.List;\n\npublic class FileComparator {\n\n private final File original;\n\n private final File revised;\n\n public FileComparator(File original, File revised) {\n this.original = original;\n this.revised = revised;\n }\n\n public List<Chunk> getChangesFromOriginal() throws IOException {\n return getChunksByType(Delta.TYPE.CHANGE);\n }\n\n public List<Chunk> getInsertsFromOriginal() throws IOException {\n return getChunksByType(Delta.TYPE.INSERT);\n }\n\n public List<Chunk> getDeletesFromOriginal() throws IOException {\n return getChunksByType(Delta.TYPE.DELETE);\n }\n\n private List<Chunk> getChunksByType(Delta.TYPE type) throws IOException {\n final List<Chunk> listOfChanges = new ArrayList<Chunk>();\n final List<Delta> deltas = getDeltas();\n for (Delta delta : deltas) {\n if (delta.getType() == type) {\n listOfChanges.add(delta.getRevised());\n }\n }\n return listOfChanges;\n }\n\n private List<Delta> getDeltas(String nuevoParam) throws IOException {\n\n final List<String> originalFileLines = fileToLines(original);\n final List<String> revisedFileLines = fileToLines(revised);\n\n final Patch patch = DiffUtils.diff(originalFileLines, revisedFileLines);\n\n return patch.getDeltas();\n }\n\n private List<String> fileToLines(File file, String nuevoParam) throws IOException {\n final List<String> lines = new ArrayList<String>();\n String line;\n final BufferedReader in = new BufferedReader(new FileReader(file));\n while ((line = in.readLine()) != null) {\n lines.add(line);\n }\n\n return lines;\n }\n\n <style = Italic>Hello</style>\n\n private void nuevoMetodoCool(File file) {\n\n }\n\n}\n一个简短的 FileComparator 类（记住它是一个 POC :D）
\n\npackage com.onuba.car.javadiff;\n\nimport difflib.Chunk;\nimport difflib.Delta;\nimport difflib.DiffUtils;\nimport difflib.Patch;\n\nimport java.io.BufferedReader;\nimport java.io.File;\nimport java.io.FileReader;\nimport java.io.IOException;\nimport java.util.ArrayList;\nimport java.util.List;\n\npublic class FileComparator {\n\n private final File original;\n\n private final File revised;\n\n public FileComparator(File original, File revised) {\n this.original = original;\n this.revised = revised;\n }\n\n public List<Chunk> getChangesFromOriginal() throws IOException {\n return getChunksByType(Delta.TYPE.CHANGE);\n }\n\n public List<Chunk> getInsertsFromOriginal() throws IOException {\n return getChunksByType(Delta.TYPE.INSERT);\n }\n\n public List<Chunk> getDeletesFromOriginal() throws IOException {\n return getChunksByType(Delta.TYPE.DELETE);\n }\n\n private List<Chunk> getChunksByType(Delta.TYPE type) throws IOException {\n final List<Chunk> listOfChanges = new ArrayList<Chunk>();\n final List<Delta> deltas = getDeltas();\n for (Delta delta : deltas) {\n if (delta.getType() == type) {\n listOfChanges.add(delta.getRevised());\n }\n }\n return listOfChanges;\n }\n\n private List<Delta> getDeltas() throws IOException {\n\n final List<String> originalFileLines = fileToLines(original);\n final List<String> revisedFileLines = fileToLines(revised);\n\n final Patch patch = DiffUtils.diff(originalFileLines, revisedFileLines);\n\n return patch.getDeltas();\n }\n\n private List<String> fileToLines(File file) throws IOException {\n final List<String> lines = new ArrayList<String>();\n String line;\n final BufferedReader in = new BufferedReader(new FileReader(file));\n while ((line = in.readLine()) != null) {\n lines.add(line);\n }\n\n return lines;\n }\n\n}\n还有一个 Junit
\n\npackage com.onuba.car.javadiff.test;\n\nimport static org.junit.Assert.fail;\n\nimport java.io.File;\nimport java.io.IOException;\nimport java.util.List;\n\nimport org.junit.Test;\n\nimport com.everis.car.javadiff.FileComparator;\n\nimport difflib.Chunk;\n\npublic class FileComparatorTest {\n\n private final File original = new File("./src/test/resources/files/FileComparatorv1.java");\n\n private final File revised = new File("./src/test/resources/files/FileComparatorv2.java");\n\n @Test\n public void shouldGetChangesBetweenFiles() {\n\n final FileComparator comparator = new FileComparator(original, revised);\n\n try {\n final List<Chunk> changesFromOriginal = comparator.getChangesFromOriginal();\n\n final int changeNum = changesFromOriginal.size();\n System.out.println("Tama\xc3\xb1o de cambios: " + changeNum);\n\n for (int i = 0; i < changeNum; i++) {\n\n final Chunk change = changesFromOriginal.get(i);\n final int firstLineOfFirstChange = change.getPosition() + 1;\n final int changeSize = change.size();\n //final String changeText = change.getLines().get(0).toString();\n\n System.out.println("Cambio n\xc2\xba " + i);\n System.out.println("firstLineOfFirstChange: " + firstLineOfFirstChange);\n System.out.println("changeSize: " + changeSize);\n System.out.println("change text: ");\n showTest(change.getLines());\n\n }\n\n /*assertEquals(3, changesFromOriginal.size());\n\n final Chunk firstChange = changesFromOriginal.get(0);\n final int firstLineOfFirstChange = firstChange.getPosition() + 1;\n final int firstChangeSize = firstChange.size();\n assertEquals(2, firstLineOfFirstChange);\n assertEquals(1, firstChangeSize);\n final String firstChangeText = firstChange.getLines().get(0).toString();\n assertEquals("Line 3 with changes", firstChangeText);\n\n final Chunk secondChange = changesFromOriginal.get(1);\n final int firstLineOfSecondChange = secondChange.getPosition() + 1;\n final int secondChangeSize = secondChange.size();\n assertEquals(4, firstLineOfSecondChange);\n assertEquals(2, secondChangeSize);\n final String secondChangeFirstLineText = secondChange.getLines().get(0).toString();\n final String secondChangeSecondLineText = secondChange.getLines().get(1).toString();\n assertEquals("Line 5 with changes and", secondChangeFirstLineText);\n assertEquals("a new line", secondChangeSecondLineText);\n\n final Chunk thirdChange = changesFromOriginal.get(2);\n final int firstLineOfThirdChange = thirdChange.getPosition() + 1;\n final int thirdChangeSize = thirdChange.size();\n assertEquals(11, firstLineOfThirdChange);\n assertEquals(1, thirdChangeSize);\n final String thirdChangeText = thirdChange.getLines().get(0).toString();\n assertEquals("Line 10 with changes", thirdChangeText);*/\n\n } catch (IOException ioe) {\n fail("Error running test shouldGetChangesBetweenFiles " + ioe.toString());\n }\n }\n\n @Test\n public void shouldGetInsertsBetweenFiles() {\n\n final FileComparator comparator = new FileComparator(original, revised);\n\n try {\n final List<Chunk> insertsFromOriginal = comparator.getInsertsFromOriginal();\n\n final int changeNum = insertsFromOriginal.size();\n System.out.println("Tama\xc3\xb1o de inserciones: " + changeNum);\n\n for (int i = 0; i < changeNum; i++) {\n\n final Chunk change = insertsFromOriginal.get(i);\n final int firstLineOfFirstChange = change.getPosition() + 1;\n final int changeSize = change.size();\n //final String changeText = change.getLines().get(0).toString();\n\n System.out.println("insercion n\xc2\xba " + i);\n System.out.println("firstLineOfFirstInsertion: " + firstLineOfFirstChange);\n System.out.println("insertion Size: " + changeSize);\n System.out.println("insertion text: ");\n showTest(change.getLines());\n\n }\n } catch (IOException ioe) {\n fail("Error running test shouldGetInsertsBetweenFiles " + ioe.toString());\n }\n /*try {\n final List<Chunk> insertsFromOriginal = comparator.getInsertsFromOriginal();\n assertEquals(1, insertsFromOriginal.size());\n\n final Chunk firstInsert = insertsFromOriginal.get(0);\n final int firstLineOfFirstInsert = firstInsert.getPosition() + 1;\n final int firstInsertSize = firstInsert.size();\n assertEquals(7, firstLineOfFirstInsert);\n assertEquals(1, firstInsertSize);\n final String firstInsertText = firstInsert.getLines().get(0).toString();\n assertEquals("new line 6.1", firstInsertText);\n\n } catch (IOException ioe) {\n fail("Error running test shouldGetInsertsBetweenFiles " + ioe.toString());\n }*/\n }\n\n @Test\n public void shouldGetDeletesBetweenFiles() {\n\n final FileComparator comparator = new FileComparator(original, revised);\n\n try {\n final List<Chunk> deletesFromOriginal = comparator.getDeletesFromOriginal();\n\n final int changeNum = deletesFromOriginal.size();\n System.out.println("Tama\xc3\xb1o de deletes: " + changeNum);\n\n for (int i = 0; i < changeNum; i++) {\n\n final Chunk change = deletesFromOriginal.get(i);\n final int firstLineOfFirstChange = change.getPosition() + 1;\n final int changeSize = change.size();\n //final String changeText = change.getLines().get(0).toString();\n\n System.out.println("delete n\xc2\xba " + i);\n System.out.println("firstLineOfFirstDelete: " + firstLineOfFirstChange);\n System.out.println("delete Size: " + changeSize);\n System.out.println("delete text: ");\n showTest(change.getLines());\n\n }\n } catch (IOException ioe) {\n fail("Error running test shouldGetInsertsBetweenFiles " + ioe.toString());\n }\n\n /*try {\n final List<Chunk> deletesFromOriginal = comparator.getDeletesFromOriginal();\n assertEquals(1, deletesFromOriginal.size());\n\n final Chunk firstDelete = deletesFromOriginal.get(0);\n final int firstLineOfFirstDelete = firstDelete.getPosition() + 1;\n assertEquals(1, firstLineOfFirstDelete);\n\n } catch (IOException ioe) {\n fail("Error running test shouldGetDeletesBetweenFiles " + ioe.toString());\n }*/\n }\n\n private void showTest(List<?> texts) {\n\n if (texts != null) {\n for (Object s : texts) {\n System.out.println(s.toString());\n }\n }\n }\n}\n最后是我的 pom.xml
\n\n<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"\n xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">\n <modelVersion>4.0.0</modelVersion>\n <groupId>com.onuba.car</groupId>\n <artifactId>javadiffpoc</artifactId>\n <version>1.0.0-SNAPSHOT</version>\n <packaging>jar</packaging>\n <name>JavaDiff :: POC</name>\n\n <url>http://maven.apache.org</url>\n\n <dependencies>\n <dependency>\n <groupId>junit</groupId>\n <artifactId>junit</artifactId>\n <version>4.11</version>\n <scope>test</scope>\n </dependency>\n\n <!-- GUAVA -->\n <dependency>\n <groupId>com.google.guava</groupId>\n <artifactId>guava</artifactId>\n <version>15.0</version>\n </dependency>\n\n <dependency>\n <groupId>com.googlecode.java-diff-utils</groupId>\n <artifactId>diffutils</artifactId>\n <version>1.2.1</version>\n </dependency>\n\n <!-- Logger -->\n <dependency>\n <groupId>ch.qos.logback</groupId>\n <artifactId>logback-classic</artifactId>\n <version>1.0.0</version>\n </dependency>\n <dependency>\n <groupId>ch.qos.logback</groupId>\n <artifactId>logback-access</artifactId>\n <version>1.0.0</version>\n </dependency>\n <dependency>\n <groupId>ch.qos.logback</groupId>\n <artifactId>logback-core</artifactId>\n <version>1.0.0</version>\n </dependency>\n <dependency>\n <groupId>org.slf4j</groupId>\n <artifactId>slf4j-api</artifactId>\n <version>1.6.4</version>\n </dependency>\n\n </dependencies>\n\n <build>\n <plugins>\n <plugin>\n <artifactId>maven-jar-plugin</artifactId>\n <version>2.4</version>\n </plugin>\n </plugins>\n </build>\n\n <properties>\n <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>\n </properties>\n</project>\n对于西班牙语中的一些日志和一些小东西感到抱歉：D，也许通过这些你可以实现你想要的。
\n\nlib 主页： https: //code.google.com/p/java-diff-utils/页面末尾有一个教程链接（西班牙语）
\n\n希望有帮助！
\n\n更新
\n\n我做了一个简单的类，生成一个文件，其差异在于用此代码删除行（我不太了解您所需的格式，如果需要，您可以添加更多装饰器）
\n\npackage com.onuba.car.javadiff;\n\nimport java.io.File;\nimport java.io.IOException;\nimport java.io.PrintWriter;\nimport java.io.RandomAccessFile;\nimport java.util.ArrayList;\nimport java.util.List;\n\nimport difflib.Chunk;\n\npublic class Comparer {\n\n private final File original = new File("./src/test/resources/files/FileComparatorv1.java");\n\n private final File revised = new File("./src/test/resources/files/FileComparatorv2.java");\n\n public static void main(String[] args) {\n\n final Comparer comparer = new Comparer();\n\n comparer.createDiffFile();\n }\n\n private void createDiffFile() {\n\n PrintWriter diffFile = null;\n //RandomAccessFile diffFile = null;\n RandomAccessFile oldFile = null;\n\n try {\n\n //diffFile = new RandomAccessFile(new File("./diffFile_" + System.currentTimeMillis()), "rw");\n diffFile = new PrintWriter("./diffFile_" + System.currentTimeMillis(), "UTF-8");\n oldFile = new RandomAccessFile(original, "r");\n\n final FileComparator comparator = new FileComparator(original, revised);\n\n final List<Chunk> changesFromOriginal = comparator.getChangesFromOriginal();\n\n final int changeNum = changesFromOriginal.size();\n System.out.println("Tama\xc3\xb1o de cambios: " + changeNum);\n\n final List<Integer> changesIndex = new ArrayList<Integer>();\n\n for (Chunk change : changesFromOriginal) {\n\n changesIndex.add(change.getPosition());\n }\n\n String line = oldFile.readLine();\n int lineIndex = 0;\n while (line != null) {\n\n if (changesIndex.contains(lineIndex)) {\n\n String strikeLine = "From: <strike-through color=yellow>" + line + "</strike-through>"; \n diffFile.print(strikeLine + " To: <strong>");\n\n for (Object s : changesFromOriginal.get(changesIndex.indexOf(lineIndex)).getLines()) {\n diffFile.println(s.toString());\n }\n diffFile.print("</strong>");\n\n } else {\n\n diffFile.println(line);\n }\n\n line = oldFile.readLine();\n lineIndex++;\n }\n\n } catch (IOException e) {\n\n } finally {\n try {\n if (diffFile != null) {\n diffFile.close();\n }\n\n if (oldFile != null) {\n oldFile.close();\n }\n } catch (IOException