| package com.huawei.esdk.fusioncompute.demo.servlet;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.log4j.Logger;import com.google.gson.Gson;import com.huawei.esdk.fusioncompute.demo.factory.ServiceManageFactory;import com.huawei.esdk.fusioncompute.demo.utils.ParametersUtils;import com.huawei.esdk.fusioncompute.local.model.FCSDKResponse;import com.huawei.esdk.fusioncompute.local.model.common.LoginResp;import com.huawei.esdk.fusioncompute.local.model.vm.QueryOsVersionsResp;/** * “查询VDC”请求处理类 * @author dWX213051 * @see * @since eSDK Cloud V100R003C30 */public class QueryOsVersionsServlet extends HttpServlet{ /** * 序列化版本标识 */ private static final long serialVersionUID = 190954570327110271L; /** * log日志对象 */ private static final Logger LOGGER = Logger .getLogger(QueryOsVersionsServlet.class); /** * gson，用于转换String和json之间的转换 */ private Gson gson = new Gson(); @Override protected void doPost( HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } @Override protected void doGet( HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // 设置request的编码 request.setCharacterEncoding("UTF-8"); // 获取需要调用的方法名 String methodName = request.getParameter("method"); String resp = ""; if ("queryOsVersions".equals(methodName)) { // 查询VDC resp = queryOsVersions(request); } // 设置response的编码 response.setContentType("application/json;charset=UTF-8"); // 输出流 PrintWriter pw = response.getWriter(); // 将结果放到浏览器中 // BUG: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')// pw.print(resp);// FIXED: // 关闭输出流 pw.close(); } /** * 查VDC信息 * * @param request * HttpServletRequest对象 * @return json格式的字符串 * @see * @since eSDK Cloud V100R003C50 */ public String queryOsVersions(HttpServletRequest request) { // 定义返回结果 String response = null; // 获取用户名 String userName = ParametersUtils.userName; // 获取密码 String password = ParametersUtils.password; // 调用鉴权接口 FCSDKResponse<LoginResp> loginResp = ServiceManageFactory.getUserService().login(userName, password); if (!"00000000".equals(loginResp.getErrorCode())) { // 鉴权失败 LOGGER.error("Failed to Login FC System!"); return gson.toJson(loginResp); } LOGGER.info("Login Success!"); LOGGER.info("Begin to query OsVersions information."); // 获取站点Uri String siteUri = request.getParameter("siteUri"); // 调用“查询指定站点支持创建虚拟机操作系统的版本”接口 FCSDKResponse<QueryOsVersionsResp> resp = ServiceManageFactory.getVmResource().queryOsVersions(siteUri); // 根据接口返回数据生成JSON字符串，以便于页面展示 response = gson.toJson(resp); LOGGER.info("Finish to query OsVersions, response is : " + response); return response; }} |