Java8导入java-diff-Utils库实现自动化比较两个文件夹中的文件并将结果以HTML的形式输出,以文件为单位输出HTML:当文件在两个文件夹中都存在但内容不一致时,将两个文件夹中的差异数据都出力到HTML中,并只将差异字段高亮显示;当文件只在一个文件夹中存在时,将这个信息输出到HTML中
时间: 2024-03-04 14:48:55 浏览: 71
web-sfdc-utils:Java库可调用任何HTTP API以及对SFDC API的特殊支持
好的,您的问题是如何使用Java8导入java-diff-Utils库实现自动化比较两个文件夹中的文件并将结果以HTML的形式输出,以文件为单位输出HTML。具体实现步骤如下:
1. 在Java项目中引入java-diff-utils库。可以通过在pom.xml文件中添加以下依赖实现:
```
<dependency>
<groupId>com.googlecode.java-diff-utils</groupId>
<artifactId>diffutils</artifactId>
<version>1.3.0</version>
</dependency>
```
2. 编写Java代码实现比较两个文件夹中的文件并将结果输出为HTML文件。具体实现需要遍历两个文件夹中的所有文件,逐一比较文件内容,然后将比较结果写入HTML文件中。以下是简单的代码示例:
```
import difflib.*;
import java.io.*;
import java.util.*;
public class FolderDiff {
public static void main(String[] args) throws Exception {
File folder1 = new File("path/to/folder1");
File folder2 = new File("path/to/folder2");
File outputFolder = new File("path/to/outputFolder");
outputFolder.mkdirs();
for (File file1 : folder1.listFiles()) {
File file2 = new File(folder2, file1.getName());
if (file2.exists()) {
compareFiles(file1, file2, new File(outputFolder, file1.getName() + ".html"));
} else {
writeOnlyInFolder1(file1, new File(outputFolder, file1.getName() + ".html"));
}
}
for (File file2 : folder2.listFiles()) {
File file1 = new File(folder1, file2.getName());
if (!file1.exists()) {
writeOnlyInFolder2(file2, new File(outputFolder, file2.getName() + ".html"));
}
}
}
private static void compareFiles(File file1, File file2, File outputFile) throws Exception {
List<String> lines1 = readLines(file1);
List<String> lines2 = readLines(file2);
Patch patch = DiffUtils.diff(lines1, lines2);
try (PrintWriter writer = new PrintWriter(outputFile)) {
writer.println("<html>");
writer.println("<head>");
writer.println("<style>.change {background-color: yellow;}</style>");
writer.println("</head>");
writer.println("<body>");
for (Delta delta : patch.getDeltas()) {
if (delta instanceof ChangeDelta) {
ChangeDelta change = (ChangeDelta) delta;
writer.println("<p><b>" + delta.getType() + "</b></p>");
writer.println("<table>");
writer.println("<tr><td>Original</td><td>Revised</td></tr>");
for (int i = 0; i < change.getOriginal().size(); i++) {
Chunk original = change.getOriginal().get(i);
Chunk revised = change.getRevised().get(i);
writer.println("<tr>");
writer.println("<td" + (original.getType() == Delta.TYPE.CHANGE ? " class=\"change\"" : "") + ">" + escapeHtml(original.toString()) + "</td>");
writer.println("<td" + (revised.getType() == Delta.TYPE.CHANGE ? " class=\"change\"" : "") + ">" + escapeHtml(revised.toString()) + "</td>");
writer.println("</tr>");
}
writer.println("</table>");
}
}
writer.println("</body>");
writer.println("</html>");
}
}
private static void writeOnlyInFolder1(File file1, File outputFile) throws Exception {
try (PrintWriter writer = new PrintWriter(outputFile)) {
writer.println("<html>");
writer.println("<body>");
writer.println("<p>Only in folder 1: " + escapeHtml(file1.getAbsolutePath()) + "</p>");
writer.println("</body>");
writer.println("</html>");
}
}
private static void writeOnlyInFolder2(File file2, File outputFile) throws Exception {
try (PrintWriter writer = new PrintWriter(outputFile)) {
writer.println("<html>");
writer.println("<body>");
writer.println("<p>Only in folder 2: " + escapeHtml(file2.getAbsolutePath()) + "</p>");
writer.println("</body>");
writer.println("</html>");
}
}
private static List<String> readLines(File file) throws Exception {
List<String> lines = new ArrayList<>();
try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
String line;
while ((line = reader.readLine()) != null) {
lines.add(line);
}
}
return lines;
}
private static String escapeHtml(String str) {
return str.replace("&", "&").replace("<", "<").replace(">", ">");
}
}
```
以上代码会遍历两个文件夹中的所有文件,逐一比较文件内容,并将比较结果输出为HTML文件。对于文件只在一个文件夹中存在的情况,会将这个信息输出到HTML文件中。
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