package cn.lqgx.www;
import entity.Student;
import service.StudentService;
import service.impl.StudentServiceImpl;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
//注解方式替换web.xml中的配置
@WebServlet("/update")
public class StudentUpdate extends HttpServlet {
StudentService studentService=new StudentServiceImpl();
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("UTF-8");
resp.setCharacterEncoding("UTF-8");
int stuId= Integer.parseInt(req.getParameter("stuId"));
String stuName = req.getParameter("stuName");
int stuAge = Integer.parseInt(req.getParameter("stuAge"));
String stuSex=req.getParameter("stuSex");
String stuAddress=req.getParameter("stuAddress");
String stuPhone=req.getParameter("stuPhone");
PrintWriter printWriter=resp.getWriter();
Student student=new Student(stuId,stuName,stuAge,stuSex,stuAddress,stuPhone);
System.out.println(student);
Student student1=studentService.selectStudent(stuId,stuName);
if(student1!=null){
int num=studentService.updateStudent(student);
if(num>0){
// resp.getWriter().println("学生信息添加成功！");
resp.setContentType("text/html;charset=UTF-8");
printWriter.write("<html lang=\"en\">");
printWriter.write("<head>");
printWriter.write("<meta charset=\"UTF-8\">");
printWriter.write("<title>Title</title>");
printWriter.write("<style>");
printWriter.write("td{width:200px;height:45px;line-height:45px;text-align:center;}");
printWriter.write("table tr:nth-child(odd){background:green;}");
printWriter.write("table tr:nth-child(even){background:#FE5F97;}");
printWriter.write("th{height:40px;line-height:40px;text-align:center;background:white;}");
printWriter.write("caption{height:45px;line-height:45px;text-align:center;}");
printWriter.write("</style>");
printWriter.write("</head>");
printWriter.write("<body>");
printWriter.write("<table border=\"1\" width=\"100%\" cellspacing=\"0\">");
printWriter.write("<caption align=\"top\">修改后的学生信息</caption>");
printWriter.write("<thead>");
printWriter.write("<tr>");
printWriter.write("<th>学号</th>");
printWriter.write("<th>姓名</th>");
printWriter.write("<th>年龄</th>");
printWriter.write("<th>性别</th>");
printWriter.write("<th>地址</th>");
printWriter.write("<th>电话号码</th>");
printWriter.write("</tr>");
printWriter.write("</thead>");
printWriter.write("<tbody>");
printWriter.write("<tr>");
printWriter.write("<td>"+student.getSid()+"</td>");
printWriter.write("<td>"+student.getSname()+"</td>");
printWriter.write("<td>"+student.getSage()+"</td>");
printWriter.write("<td>"+student.getSsex()+"</td>");
printWriter.write("<td>"+student.getSaddress()+"</td>");
printWriter.write("<td>"+student.getSphoneNum()+"</td>");
printWriter.write("</tr>");
printWriter.write("</tbody>");
printWriter.write("</table>");
printWriter.write("</body>");
printWriter.write("</html>");
// resp.getWriter().println("【学生信息为：】"+student);
}else {
resp.getWriter().println("学生信息修改失败！");
}
}else{
resp.getWriter().println("学生信息不存在，不能修改！");
}
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req, resp);
}
}
学生信息管理系统.rar （97个子文件） 
学生信息管理系统 JSP05_FormServlet src 
database.properties 174B dao StudentDao.java 356B impl StudentDaoImpl.java 3KB cn lqgx www StudentUpdate.java 4KB StudentServlet.java 4KB StudentLogin.java 1KB StudentDel.java 1KB StudentShow.java 3KB service impl StudentServiceImpl.java 844B StudentService.java 402B entity Student.java 1KB utils DBUtils.java 799B DateUtils.java 656B Main.java 116B .idea uiDesigner.xml 9KB misc.xml 278B modules.xml 281B workspace.xml 8KB .gitignore 184B libraries druid_1_1_5.xml 220B commons_dbutils_1_7__2_.xml 252B mysql_connector_java_5_1_0_bin.xml 258B servlet_api.xml 232B servlet_api__2_.xml 236B druid_1_1_5__2_.xml 236B mysql_connector_java_5_1_0_bin__2_.xml 274B commons_dbutils_1_7.xml 236B artifacts JSP05_FormServlet_war_exploded.xml 543B out production JSP05_FormServlet database.properties 174B dao StudentDao.class 342B impl StudentDaoImpl.class 3KB cn lqgx www StudentServlet.class 4KB StudentShow.class 3KB StudentLogin.class 2KB StudentDel.class 2KB StudentUpdate.class 4KB Main.class 516B service StudentService.class 390B impl StudentServiceImpl.class 1KB entity Student.class 2KB utils DBUtils.class 1KB DateUtils.class 1KB artifacts JSP05_FormServlet_war_exploded css newstu.css 680B update.css 680B selectAll.css 415B login.css 424B delete.css 398B img 
1.jpg 45KB
1.gif 1.4MB
studentUpdate.html 2KB studentDelete.html 417B showAllStudents.html 341B WEB-INF web.xml 304B classes database.properties 174B dao StudentDao.class 342B impl StudentDaoImpl.class 3KB cn lqgx www StudentServlet.class 4KB StudentShow.class 3KB StudentLogin.class 2KB StudentDel.class 2KB StudentUpdate.class 4KB Main.class 516B service StudentService.class 390B impl StudentServiceImpl.class 1KB entity Student.class 2KB utils DBUtils.class 1KB DateUtils.class 1KB lib 
druid-1.1.5.jar 2.53MB mysql-connector-java-5.1.0-bin.jar 553KB commons-dbutils-1.7.jar 95KB servlet-api.jar 244KB studentLogin.html 470B js jQuery-3.6.1.js 299KB newstu.js 4KB index.jsp 304B studentInfo.html 1KB web css newstu.css 680B update.css 680B selectAll.css 415B login.css 424B delete.css 398B img 1.jpg 45KB 1.gif 1.4MB studentUpdate.html 2KB studentDelete.html 417B showAllStudents.html 341B WEB-INF web.xml 304B lib druid-1.1.5.jar 2.53MB mysql-connector-java-5.1.0-bin.jar 553KB commons-dbutils-1.7.jar 95KB servlet-api.jar 244KB studentLogin.html 470B js jQuery-3.6.1.js 299KB newstu.js 4KB index.jsp 304B studentInfo.html 1KB JSP05_FormServlet.iml 1KB资源评论
丶锅开了就进来啊2023-04-21大哥，我怎么运行不了呢，可以出来界面，但是输好信息后，页面跳转失败啊
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