java在线编译系统源码.rar

/** * */ package com.jhunter.bbs.controller; import java.io.BufferedReader; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.PrintWriter; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletRequest; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; /** * @author jixiaolong * */ @Controller public class CompileController { @RequestMapping(value = "/compile", method = RequestMethod.GET) public String gotoCompile() { return "/compile.jsp"; } @RequestMapping(value = "/result", method = RequestMethod.POST) public String compile(@RequestParam("code") String main, @RequestParam("input") String put, Model model, HttpServletRequest request) throws Exception { // String realPath = request.getSession().getServletContext() // .getRealPath("/"); String realPath = "c:/"; String input = put.trim(); System.out.println(input); System.out.println(realPath); File uploadPath = new File(realPath, "compile"); uploadPath.mkdirs(); String imputPackage = "import java.applet.*;" + "import java.awt.*;" + "import java.beans.*;" + "import java.io.*;" + "import java.lang.*;" + "import java.math.*;" + "import java.net.*;" + "import java.nio.*;" + "import java.rmi.*;" + "import java.security.*;" + "import java.sql.*;" + "import java.text.*;" + "import java.util.*;"; String className = "Class" + System.nanoTime(); String code = imputPackage + "\n" + "public class " + className + "{" + main + "}";// 构造类 System.out.println(code); PrintWriter writer = new PrintWriter(new FileWriter(new File( uploadPath, className + ".java "))); writer.println(code); writer.close(); String line = ""; String tmp = ""; Process compile = Runtime.getRuntime().exec( "javac -encoding UTF-8 \"" + realPath + "compile\\" + className + ".java\" "); // 编译JAVA文件 BufferedReader comError = new BufferedReader(new InputStreamReader( compile.getErrorStream(), "gbk"));// 获得编译错误结果 while ((tmp = comError.readLine()) != null) { line = line + tmp + "\n"; } if (line.equals("")) { Process run = null; try { run = Runtime.getRuntime().exec( "java -cp " + realPath + "compile\\ " + className); if (input != null && input != "") { OutputStream output = run.getOutputStream(); output.write((input).getBytes("GBK")); output.flush(); output.close(); } BufferedReader runRight = new BufferedReader( new InputStreamReader(run.getInputStream(),"gbk"));// 获得运行正确结果 while ((tmp = runRight.readLine()) != null) { line = line + tmp + "\n"; } BufferedReader runErro = new BufferedReader( new InputStreamReader(run.getErrorStream(), "gbk"));// 获得运行错误结果 while ((tmp = runErro.readLine()) != null) { line = line + tmp + "\n"; } } catch (IOException e) { e.printStackTrace(); line = e.toString(); } } System.out.println(realPath); model.addAttribute("result", line); // File java = new File(uploadPath, className + ".java "); // java.delete(); // File javaClass = new File(uploadPath, className + ".class "); // javaClass.delete(); return "/result.jsp"; } } //jiaolongzhi 原创 采用spring mvc 实现简单的java在线编译系统 复杂的java程序肯定不行了。期望不要太高哦。 接受 表单提交的 java源代码 运行出结果在result.jsp显示。 可以检测出语法错误。 注意 输入的源代码 不要写类名和最外面的一对大括号。也不要导入任何包 系统会自动导入java所有的包。 因为类名是 系统自动生成的 生成的 java class文件保存在c:/compile 如果要接收 控制台输入的参数 请在点运行前输入 。单击compile.jsp中的例子按钮 可以测试这个功能。