原理参照python在线编译器实现
代码注释很多，直接上代码
目录结构：
OnlineEXEC
|----zxby.py
|----test.bat(因为测试环境是windows，linux可以自行改成shell)
|----app
|----flaskrun.py
zxby.py代码实现：
# -*- coding: utf-8 -*-#__author__="ZJL"import os,subprocess,tempfile# 创建临时文件夹,返回临时文件夹路径TempFile = tempfile.mkdtemp(suffix='_test', prefix='java_')# javac 和 Java 编译器位置JAVAC_EXEC = "C:javajdk1.8.0_121\贪玩的茉莉javac"JAVA_EXEC = "C:javajdk1.8.0_121\贪玩的茉莉java"# 获得java文件名def get_javaname(code): if code: if "public class" in code and "{" in code: FileName = code.split("public class ")[1].split("{")[0].strip() else: FileName = "test" return FileName# 接收代码写入文件def write_file(jname, code): fpath = os.path.join(TempFile, '%s.java' % jname) with open(fpath, 'w', encoding='utf-8') as f: f.write(code) print('file path: %s' % fpath) return fpath# 编码def decode(s): try: return s.decode('utf-8') except UnicodeDecodeError: return s.decode('gbk')# 主执行函数def main(code): r = dict() jname = get_javaname(code) fpath = write_file(jname, code) try: # subprocess.check_output 是 父进程等待子进程完成，返回子进程向标准输出的输出结果 # stderr是标准输出的类型 # 编译Java代码 outdata = decode(subprocess.check_output([JAVAC_EXEC, fpath], stderr=subprocess.STDOUT, timeout=5)) except subprocess.CalledProcessError as e: # e.output是错误信息标准输出 # 错误返回的数据 r["code"] = 'Error' r["output"] = decode(e.output) return r else: # 执行Java代码 # 因为调用原因，bat写绝对路径 outdata = decode(subprocess.check_output(["D:\PycharmProjects\zxbyqjava\test.bat", TempFile,JAVA_EXEC,jname], stderr=subprocess.STDOUT, timeout=5)) # 成功返回的数据 r['output'] = outdata r["code"]="Success" return r# if __name__ == '__main__':# code ="""public class hello {public static void main(String []args) {System.out.println("Hello World");}}"""# print(main(code))
test.bat代码实现(这个脚本的作用是解决classpath路径执行的问题):
flaskrun.py代码实现：
# -*- coding: utf-8 -*-#__author__="ZJL"from flask import Flaskfrom flask import requestfrom flask import Responseimport jsonimport zxbyapp = Flask(__name__)def Response_headers(content): resp = Response(content) resp.headers['Access-Control-Allow-Origin'] = '*' return resp@app.route('/')def hello_world(): return Response_headers('hello world!!!')@app.route('/run',methods=['POST'])def run(): if request.method == 'POST' and request.form['code']: code = request.form['code'] jsondata = zxby.main(code) return Response_headers(str(jsondata))@app.errorhandler(403)def page_not_found(error): content = json.dumps({"error_code": "403"}) resp = Response_headers(content) return resp@app.errorhandler(404)def page_not_found(error): content = json.dumps({"error_code": "404"}) resp = Response_headers(content) return resp@app.errorhandler(400)def page_not_found(error): content = json.dumps({"error_code": "400"}) resp = Response_headers(content) return resp@app.errorhandler(405)def page_not_found(error): content = json.dumps({"error_code": "405"}) resp = Response_headers(content) return resp@app.errorhandler(410)def page_not_found(error): content = json.dumps({"error_code": "410"}) resp = Response_headers(content) return resp@app.errorhandler(500)def page_not_found(error): content = json.dumps({"error_code": "500"}) resp = Response_headers(content) return respif __name__ == '__main__': app.run(debug=True)
打开postman测试：
成功测试：
错误测试;