人物管理系统Servlet【完整版】

前言：今天要讲的是Servlet版本的人物数据维护 一、项目框架（以图展示）

1、在Oracel中创建人物表（字段：姓名、性别、年龄、爱好、地址、成就）

2、在Eclipse中创建项目

 

二、效果图展示 index.jsp(主页面)

add.jsp（添加人物）

update.jsp（修改人物信息） 

select.jsp（人物详情） 

delete.jsp（删除人物） 

三、代码展示 (重点代码展示)

index.jsp

		
		

	
		

		

			
人物编号
			
人物名称
			
人物性别
			
人物爱好
			
人物地址
			
人物简介
			
操作一下
		
		

			
${s.sid}
			
${s.sname}
			
${s.sex}
			
${s.slike}
			
${s.saddress}
			
${s.sinfo}
			
			

				添加
				删除 
				修改 
				详情 
			
		
	
	
	
   

   退出exit
	

IndexServlet.java

package com.china.servlet;


@WebServlet("/IndexServlet")
public class IndexServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
    
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// 设置编码--给页面响应数据
		response.setCharacterEncoding("gbk");
		// 获取响应对象的 输出流
		PrintWriter out = response.getWriter();
		
		//获取模糊查询的关键字
		String str = request.getParameter("str");
		if(str==null) {
			str = "";//为空就查询所有
		}
		
		int pageIndex=1;//页码
	 	//接收页码
	 	String index = request.getParameter("pageIndex");
	 	if(index!=null){//如果接收到页码，就给页码pageIndex赋值
	 		pageIndex = Integer.valueOf(index);
	 	}
	 	int pageSize=10;//每页的数据条数，每页10条数据
	 	
	 	//调用业务逻辑查询
	 	IStudentBiz isb = new Imp_IStudentBiz();
	 	//调用分页模糊查询方法
	 	ArrayList slist = isb.getLikeStu(pageIndex, pageSize, str);
	 	
	 	//将集合放到内置对象中
	 	request.setAttribute("slist", slist);
	 	//跳转
	 	request.getRequestDispatcher("index.jsp").forward(request, response);
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}

}

 

---

 add.jsp 

	

		姓名：

		性别：

		年龄：

		爱好：

		地址：

		简介：

		
		
		
	

AddServlet.java

@WebServlet("/AddServlet")
public class AddServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// 设置编码--给页面响应数据
		response.setCharacterEncoding("gbk");
		// 获取响应对象的 输出流
		PrintWriter out = response.getWriter();
		HttpSession session = request.getSession();
		
		//获取数据
		String sname = request.getParameter("sname");
		String sex = request.getParameter("sex");
		int sage = Integer.valueOf(request.getParameter("sage"));
		String slike = request.getParameter("slike");
		String saddress = request.getParameter("saddress");
		String sinfo = request.getParameter("sinfo");
		
		//实例化一个人物对象
		Student s = new Student(sname, sex, sage, slike, saddress, sinfo);
		//调用业务逻辑
		IStudentBiz isb = new Imp_IStudentBiz();
		//调用添加方法
		boolean i = isb.addStu(s);
		if(i) {
			session.setAttribute("s", s);
			request.getRequestDispatcher("IndexServlet").forward(request, response);
		}else {
			out.print("");
		}
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}

}

 

---

update.jsp（详情与修改类似，就不列举代码了）

	

		姓名：

		性别：

		年龄：

		爱好：

		地址：

		简介：

		
		
		
		
	

UpdateServlet.java

@WebServlet("/UpdateServlet")
public class UpdateServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
   
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		//设置编码
		request.setCharacterEncoding("utf-8");
		response.setCharacterEncoding("gbk");
		// 获取响应对象的 输出流
		PrintWriter out = response.getWriter();
		
		// 接收编号
		int sid = Integer.valueOf(request.getParameter("sid"));
		//获取数据
		String sname = request.getParameter("sname");
		String sex = request.getParameter("sex");
		int sage = Integer.valueOf(request.getParameter("sage"));
		String slike = request.getParameter("slike");
		String saddress = request.getParameter("saddress");
		String sinfo = request.getParameter("sinfo");
		//实例化一个人物对象
		Student s = new Student(sname, sex, sage, slike, saddress, sinfo);
				
		//调用业务逻辑修改方法
		IStudentBiz isb = new Imp_IStudentBiz();
		boolean i = isb.upStu(sid, s);
		if(i) {
			request.getRequestDispatcher("IndexServlet").forward(request, response);
		}else {
			out.print("");
		}
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}

}

 

---

Delservlet.java

@WebServlet("/DelServlet")
public class DelServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
   
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setCharacterEncoding("gbk");
		PrintWriter out = response.getWriter();
		//接收编号
		String id = request.getParameter("sid");
		int sid = Integer.valueOf(id);
		boolean b = new Imp_IStudentBiz().delById(sid);
		if(b) {
			out.print("");
		}else {
			out.print("");
		}
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}

}

以上所有Servlet类都是调用了业务逻辑类（Biz） 中的方法，要想实现Biz类方法需要在dao类中写方法，可以自行拓展。

IStudentBiz.java        (业务逻辑接口类)

package com.china.biz;

import java.util.ArrayList;

import com.china.entity.Student;


public interface IStudentBiz {
	
	public ArrayList getLikeStu(int pageIndex,int pageSize,String str);
	
	
	public Student getById(int sid);
	
	
	public ArrayList getAll();
	
	
	public boolean addStu(Student stu);
	
	
	public boolean upStu(int sid,Student stu);
	
	
	public boolean delById(int sid);

}

Imp_IStudentBiz.java (业务逻辑实现类)

package com.china.biz.imp;

import java.util.ArrayList;

import com.china.biz.IStudentBiz;
import com.china.dao.IStudentDao;
import com.china.dao.imp.Imp_IStudentDao;
import com.china.entity.Student;

public class Imp_IStudentBiz implements IStudentBiz{
	//多态
	IStudentDao isd = new Imp_IStudentDao();
	
	@Override
	public ArrayList getLikeStu(int pageIndex, int pageSize, String str) {
		return isd.getLikeStu(pageIndex, pageSize, str);
	}

	@Override
	public Student getById(int sid) {
		return isd.getById(sid);
	}

	@Override
	public ArrayList getAll() {
		return isd.getAll();
	}

	@Override
	public boolean addStu(Student stu) {
		return isd.addStu(stu)>0?true:false;
	}

	@Override
	public boolean upStu(int sid, Student stu) {
		return isd.upStu(sid, stu)>0?true:false;
	}

	@Override
	public boolean delById(int sid) {
		return isd.delById(sid)>0?true:false;
	}

}

 

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