先以简单的文件读写实现为基础，FileHelper类中的readFile方法用于读取文件内容，writeFile方法用于向文件中写入内容。
import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileReader; import java.io.FileWriter; public class FileHelper { public static String readFile(String filename) throws Exception { BufferedReader reader = new BufferedReader(new FileReader(filename)); String ans = "", line = null; while((line = reader.readLine()) != null){ ans += line + "rn"; } reader.close(); return ans; } public static void writeFile(String content, String filename) throws Exception { BufferedWriter writer = new BufferedWriter(new FileWriter(filename)); writer.write(content); writer.flush(); writer.close(); } public static void main(String[] args) throws Exception { String ans = readFile("D:input.txt"); writeFile(ans, "D:output.txt"); } }
然后在FileHelper类的基础上写一个WebpageMaker类，其createPage方法用于将特定文件中的内容生成在特定的网页中。
其中如果要插入代码可以将代码加入中。
import java.util.StringTokenizer; public class WebpageMaker { public static String initBegin() { String s = "<!doctype html><html><head><title></title></head><body>rn"; return s; } public static String initEnd() { String s = "rn</body></html>rn"; return s; } public static void createPage(String inputfilename, String outputfilename) throws Exception { String content = FileHelper.readFile(inputfilename); StringTokenizer st = new StringTokenizer(content, "rn"); String ans = ""; ans += initBegin(); boolean isCoding = false; while(st.hasMoreElements()) { String s = st.nextToken(); int len = s.length(); for(int i=0;i<len;i++) { if(i+6 <= len && s.substring(i,i+6).equals("<alex>")) { isCoding = true; ans += "<pre>"; i += 5; continue; } if(i+7 <= len && s.substring(i,i+7).equals("</alex>")) { isCoding = false; ans += "</pre>"; i += 6; continue; } char c = s.charAt(i); if(c == '"') ans += """; else if(c == '&') ans += "&"; else if(c == '<') ans += "<"; else if(c == '>') ans += ">"; else if(c == ' ') ans += ""; else if(c == 't') ans += ""; else ans += c; } if(false == isCoding) ans += "<br />rn"; else ans += "rn"; } ans += initEnd(); FileHelper.writeFile(ans, outputfilename); } public static void main(String[] args) throws Exception { createPage("D://test.txt", "D://test.html"); } }
样例：
输入文件：test.txt
hello world！ 大家好：） #include int main() { printf("hello world!n"); return 0; }
输出文件：test.html
<!doctype html><html><head><title></title></head><body> hello world！<br /> 大家好：）<br /> <pre>#include <stdio.h> int main() { printf("hello world!n"); return 0; }</pre><br /> </body></html>
效果如下：
hello world！ 大家好：） #include <stdio.h> int main() { printf("hello world!n"); return 0; }