SSJDBC demo

package com.space.util; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import javax.servlet.http.HttpServletResponse; import org.apache.commons.io.FileUtils; import org.apache.commons.lang3.StringUtils; import org.apache.struts2.ServletActionContext; import com.google.gson.Gson; import com.google.gson.GsonBuilder; public class MyUtil { /** * 向客户端发送一个字符串 * @param str 需发送的字符串 */ public static void sendString(Object obj){ String str = "" ; Gson g = new GsonBuilder().setDateFormat("yyyy-MM-dd HH:mm:ss").create() ; str = g.toJson(obj) ; if(obj instanceof String){ str = (String) obj ; } HttpServletResponse response = ServletActionContext.getResponse(); response.setContentType("text/plain;charset=UTF-8"); try { response.getWriter().write(str) ; System.out.println("发送:" + str); } catch (IOException e) { e.printStackTrace(); } } /** * 向客户端发送一个字符串 * @param obj 需发送的对象 * @param dateType obj中date类型需转换的格式 默认为：yyyy-MM-dd HH:mm:ss */ public static void sendString(Object obj,String dateType){ String str = "" ; if(StringUtils.isEmpty(dateType)){ dateType = "yyyy-MM-dd HH:mm:ss"; } Gson g = new GsonBuilder().setDateFormat(dateType).create() ; str = g.toJson(obj) ; if(obj instanceof String){ str = (String) obj ; } HttpServletResponse response = ServletActionContext.getResponse(); response.setContentType("text/plain;charset=UTF-8"); try { response.getWriter().write(str) ; System.out.println("发送:" + str); } catch (IOException e) { e.printStackTrace(); } } /** * 格式化日期 * @param date 需格式化的日期,formatType 格式化样式(为null，则默认格式化成yyyy-MM-dd HH:mm:ss) * @return 格式化后的时间 */ public static String formatDate(Date date , String formatType) { SimpleDateFormat simpleDateFormat ; if(formatType != null){ simpleDateFormat = new SimpleDateFormat(formatType); }else{ simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); } return simpleDateFormat.format(date); } /** * 保存图片 * @return */ public static boolean saveImage(File upFile , String uploadPath , String upFileFileName){ if(upFile != null){ File saveFile = new File(new File(uploadPath), upFileFileName); if (!saveFile.getParentFile().exists()){ saveFile.getParentFile().mkdirs(); } try { FileUtils.copyFile(upFile, saveFile); } catch (IOException e) { e.printStackTrace(); return false ; } }else{ return false ; } return true ; } /** * 获取图片保存的绝对路径 * @param relative 图片的相对路径 * @return */ public static String imagePath(String relative){ String path = null ; if(relative != null || ! "".equals(relative)){ String projectPath = ServletActionContext.getRequest().getSession().getServletContext().getRealPath("/"); path = new File(projectPath).getParentFile().getAbsolutePath()+relative ; path = path.replaceAll("\\\\", "/") ; // System.out.println(path); } return path ; } }