查看源码 ViewJavaSourceServlet

import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStreamReader;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class ViewJavaSourceServlet extends HttpServlet {private static final long serialVersionUID = 1L;           public ViewJavaSourceServlet() {        super();    }protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {//从Socket读取一组数据String javaSrc = request.getParameter("src").toString();String filePath = request.getSession().getServletContext().getRealPath("/") + "/WEB-INF/classes/org/operamasks/" + javaSrc;InputStreamReader in;try {in = new InputStreamReader(new FileInputStream(new File(filePath)),"UTF-8");} catch (FileNotFoundException e1) {e1.printStackTrace();response.setCharacterEncoding("UTF-8");response.setContentType("text/plain; charset=UTF-8");response.getWriter().print("(⊙o⊙)，文件没有找到！");return;}StringBuffer requestStr = new StringBuffer(2048);int i;char[] buffer = new char[20480];try {i = in.read(buffer);} catch (IOException e) {e.printStackTrace();i = -1;} finally {if (in != null) {in.close();}}for (int j=0; j<i; j++) {requestStr.append(buffer[j]);}response.setCharacterEncoding("UTF-8");response.setContentType("text/plain; charset=UTF-8");response.getWriter().print(requestStr.toString());}}