部门管理代码.doc

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1、一、servlet1、删除功能代码：packagecom.dept.servlet;importjava.io.IOException;io异常包importjava.io.PrintWriter;打印字符包importjava.io.UnsupportedEncodingException;importjava.sql.SQLException;sql异常包importjava.sql.Statement;sql下的statementimportjavax.servlet.ServletException;servlet下面的ser

2、vlet异常包importjavax.servlet.http.HttpServlet;http协议下面的HttpServlet包importjavax.servlet.http.HttpServletRequest;HTTP协议下面的请求包importjavax.servlet.http.HttpServletResponse;http协议下的响应包importcom.model.tools.JDBConnection;连接数据库包publicclassDepDeleteSevletextendsHttpServlet{public

3、voiddoGet(HttpServletRequestrequest,HttpServletResponseresponse)服务器请求类响应类throwsServletException,IOException{doPost(request,response);接受网页提交的如表单等信息，比较安全}publicvoiddoPost(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException{response.set

4、ContentType("text/html;charset=GBK");响应内容类型以txt和html显示出来，用GBK字符集响应出来request.setCharacterEncoding("GBK");客户端以GBK这种字符集发出请求PrintWriterout=response.getWriter();响应的信息存放于outStringDep_ID=request.getParameter("Dep_ID");从页面上获得参数部门号赋给Dep_ID//创建数据库连接java.sql.Connectionconn;调用sql里c

5、onnection类接口，声明了conn接口try{conn=JDBConnection.getConnection();//JDBConnection类调用getConnection方法赋给connStringBuffersql=newStringBuffer();带缓冲区的字符串类，声明sql变量，给sql的空间sql.append("deletefromdepartmentinfowhereDep_ID='"+Dep_ID+"'");//作用发送sql到数据库端Statementst=conn.createStatement()

6、;intcount=st.executeUpdate(sql.toString());if(count>0){request.getRequestDispatcher("dept/DepSuccess.jsp").forward(request,response);st.close();conn.close();}}catch(SQLExceptione){//TODOAuto-generatedcatchblocke.printStackTrace();}}}2、修改和添加功能代码：/**Tochangethistemplate,c

7、hooseTools

8、Templates*andopenthetemplateintheeditor.*/packagecom.dept.servlet;importjava.io.*;importjava.sql.Connection;importjava.sql.ResultSet;importjava.sql.SQLException;importjava.sql.Statement;importjavax.servlet.ServletException;importjavax.servlet.http.*;importcom

9、.model.tools.*;publicclassDepInfoServletextendsHttpServlet{privateintmethod;//privateUserInfouserInfo=null;///