基于java+servlet+ssh项目合同管理系统
今天和一个朋友共同完成了一个合同管理系统项目，我们在开发时选用的框架是ssh(MYECLIPSE)框架。我这个朋友知识有限，只会这个框架，哈哈，都是为了方便他。和往常一样选用简单又便捷的MYECLIPSE作为开发工具，这是一个 后台项目。这个系统的介绍是这样的：该文开发的合同管理系统是典型的管理信息系统(MIS),在此系统中,采用了MVC三层结构,因此该系统的实现主要包括后台数据库的建立和维护、前端应用程序以及中间的应用服务器层的开发三个方面.对于数据库要求建立起数据一致性和完整性强.数据安全性好的库;应用程序则要求具有功能完备,易使用等特点;而中间应用服务器层则应具备可随企业逻辑变化能灵活改变的性能.全面提高了软件的质量与生产率.工程化的思想和面向对象的思想的采用,为该软件的成功和快速的开发提供了指导.合同管理系统是一个办公自动...，一个合同管理系统应包含用户角色有管理员。为了能让用户顺利登陆系统完成相关操作，需要为每种登陆角色设置账户和密码字段。系统中公司之间存在关联关系，我们将其关联关系保存在合同表中。他们的关联关系是这样的合同的公司与公司的mingzi字段对应、合同的公司id与公司的id字段对应
基于java+servlet+ssh项目合同管理系统
包含源程序，数据库脚本。代码和数据库脚本都有详细注释。课题设计仅供参考学习使用，可以在此基础上进行扩展完善
代码已经上传github，下载地址https://github.com/21503882/project
开发环境：
Eclipse ,MYSQL,JDK1.8,Tomcat 7
涉及技术点：
MVC模式、SpringMvc、Mybatis、Spring、bootstrap、HTML、JavaScript、CSS、JQUERY、log4j、Ajax、maven等
系统采用Mybatis框架实现ORM对象关系映射，前台JSP实现，后台springMvc映射，使用Spring框架进行整合。适合学习J2EE的一段时间的熟手，代码思路清晰，注解详细，数据库用的是mysql5.1，服务器用的tomcat7，JDK版本1.8. 编程软件Eclispe J2EE版本。是典型MVC架构，并且前后台分离
主要功能：
package com.serverlet;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.json.JSONObject;
import sun.misc.BASE64Decoder;
import sun.security.action.GetBooleanAction;
import com.bean.Good;
import com.bean.Good_User;
import com.bean.News;
import com.bean.User;
import com.dao.GoodDao;
import com.dao.UserDao;
import com.google.gson.Gson;
import com.sun.org.apache.bcel.internal.generic.NEWARRAY;
public class goodServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public goodServlet() {
super();
}
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
this.doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
String param = request.getParameter("param");
System.out.println(param);
if (param != null && param.equals("selectsome")) {
this.selectsome(request, response);
} else if (param != null && param.equals("gettel")) {
this.gettel(request, response);
} else if (param != null && param.equals("goodadd")) {
this.goodadd(request, response);
} else if (param != null && param.equals("myselect")) {
this.myselect(request, response);
} else if (param != null && param.equals("ugadd")) {
this.ugadd(request, response);
} else if (param != null && param.equals("selectun")) {
this.selectun(request, response);
} else if (param != null && param.equals("updategood")) {
this.updategood(request, response);
}else if (param != null && param.equals("newsadd")) {
this.newsadd(request, response);
}else if (param != null && param.equals("newssele")) {
this.newssele(request, response);
}
}
public void newssele(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
// String uno = request.getParameter("uno");
// String type=request.getParameter("type");
// System.out.println(uno);
GoodDao dao = new GoodDao();
List<News> list;
list = dao.newssele();
Gson gson = new Gson();
System.out.println(gson.toJson(list).toString());
out.print(gson.toJson(list));
out.flush();
out.close();
}
public void selectsome(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
String name = request.getParameter("name");
if (name != null)
name = new String(name.getBytes("ISO-8859-1"), "UTF-8");
String type = request.getParameter("type");
if (type != null)
type = new String(type.getBytes("ISO-8859-1"), "UTF-8");
System.out.println(name);
GoodDao dao = new GoodDao();
List<Good> list;
if (type == null)
list = dao.selectsome(name);
else {
if (name != null) {
list = dao.selectsome1(name, type);
// System.out.println("111");
} else {
list = dao.selectsome2(type);
// System.out.println("222");
}
}
Gson gson = new Gson();
// System.out.println(gson.toJson(list).toString());
out.print(gson.toJson(list));
out.flush();
out.close();
}
public void selectun(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
GoodDao dao = new GoodDao();
List<Good_User> list;
list = dao.selectun();
Gson gson = new Gson();
// System.out.println(gson.toJson(list).toString());
out.print(gson.toJson(list));
out.flush();
out.close();
}
public void myselect(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
String uno = request.getParameter("uno");
// String type=request.getParameter("type");
System.out.println(uno);
GoodDao dao = new GoodDao();
List<Good> list;
list = dao.myselect(uno);
Gson gson = new Gson();
System.out.println(gson.toJson(list).toString());
out.print(gson.toJson(list));
out.flush();
out.close();
}
public void ugadd(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
PrintWriter out = response.getWriter();
String uno = request.getParameter("uno");
String gno = request.getParameter("gno");
String gname = request.getParameter("gname");
gname = new String(gname.getBytes("ISO-8859-1"), "UTF-8");
System.out.println(uno + gno + gname);
GoodDao dao = new GoodDao();
dao.ugadd(uno, gno, gname);
Gson gson = new Gson();
out.flush();
out.close();
}
private void gettel(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// http://localhost:8080/androidServer/servlet/StuServlet?param=add&sno=111&sname=111&dept=111&age=20
String uno = request.getParameter("uno");
GoodDao dao = new GoodDao();
JSONObject root = new JSONObject();
String tel = dao.gettel(uno);
root.put("tel", tel);
PrintWriter out = response.getWriter();
out.print(root);
out.flush();
out.close();
}
private void updategood(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
// http://localhost:8080/androidServer/servlet/StuServlet?param=add&sno=111&sname=111&dept=111&age=20
String gno = request.getParameter("gno");
GoodDao dao = new GoodDao();
// JSONObject root = new JSONObject();
dao.updategood(gno);
// root.put("tel", tel);
PrintWriter out = response.getWriter();
// out.print(root);
out.flush();
out.close();
}
public void newsadd(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
String jsonString = request.getParameter("jsonString");
JSONObject json = new JSONObject(jsonString);
String neirong = json.get("neirong").toString();
String name = json.get("name").toString();
// String imagename = getnowtime();
// String time = json.get("time").toString();
// String other = json.get("other").toString();
// String adress = json.get("adress").toString();
String uno = json.get("uno").toString();
// String type = json.get("type").toString();
// GenerateImage(image, uno + imagename);
News news = new News();
news.setUno(uno);// 0是未认领，1是认领
news.setName(name);
news.setNeirong(neirong);
GoodDao dao = new GoodDao();
if (dao.addnew(news)) {
PrintWriter out = response.getWriter();
out.print("true");
} else {
PrintWriter out = response.getWriter();
out.print("false");
}
} catch (Exception e) {
PrintWriter out = response.getWriter();
out.print("false");
e.printStackTrace();
}
}
public void goodadd(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
String jsonString = request.getParameter("jsonString");
JSONObject json = new JSONObject(jsonString);
String name = json.get("name").toString();
String image = json.get("image").toString();
String imagename = getnowtime();
String time = json.get("time").toString();
String other = json.get("other").toString();
String adress = json.get("adress").toString();
String uno = json.get("uno").toString();
String type = json.get("type").toString();
GenerateImage(image, uno + imagename);
Good good = new Good();
good.setClaimstate(false);// 0是未认领，1是认领
good.setDescribe(other);
good.setImagname(uno + imagename);
good.setName(name);
good.setTime(time);
good.setType(type);
good.setAdress(adress);
good.setUno(Integer.parseInt(uno));
GoodDao dao = new GoodDao();
if (dao.add(good)) {
PrintWriter out = response.getWriter();
out.print("true");
} else {
PrintWriter out = response.getWriter();
out.print("false");
}
} catch (Exception e) {
PrintWriter out = response.getWriter();
out.print("false");
e.printStackTrace();
}
}
public void init() throws ServletException {
// Put your code here
}
public static boolean GenerateImage(String imgStr, String filename) { // 对字节数组字符串进行Base64解码并生成图片
if (imgStr == null) // 图像数据为空
return false;
BASE64Decoder decoder = new BASE64Decoder();
try {
// Base64解码
byte[] b = decoder.decodeBuffer(imgStr);
for (int i = 0; i < b.length; ++i) {
if (b[i] < 0) {// 调整异常数据
b[i] += 256;
}
}
// 生成jpeg图片
String imgFilePath = "D:/图片/" + filename + ".jpg";// 新生成的图片
OutputStream out = new FileOutputStream(imgFilePath);
out.write(b);
out.flush();
out.close();
return true;
} catch (Exception e) {
return false;
}
}
public static String getnowtime() {
// 获取当前时间
Date date = new Date();
// SimpleDateFormat sdf = new
// SimpleDateFormat("",Locale.SIMPLIFIED_CHINESE);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd",
Locale.SIMPLIFIED_CHINESE);
// 添加格式化格式
sdf.applyPattern("yyyyMMddHHmmss");
String timeStr = sdf.format(new Date());
System.out.println(timeStr);
return timeStr;
}
}
代码已经上传github，下载地址https://github.com/21503882/project
一个合同管理系统应包含用户角色有管理员。为了能让用户顺利登陆系统完成相关操作，需要为每种登陆角色设置账户和密码字段。